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UNIVERSIDAD AUSTRAL DE CHILE
New pandemics? Study postulates that the planet’s microorganisms...
In Germany, the world’s first automated prototype that...
Book on the occupation of Patagonia obtains important...
Underwater forests of Patagonia present unique adaptations to...
Research allowed to establish the impact of tides...

Centro IDEAL

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MENUMENU
  • IDEAL
    • WHO WE ARE
    • OBJECTIVES
    • STUDY AREAS
      • Subantarctica
      • Antarctica
    • RESEARCH LINES
      • Marine productivity in a changing ocean
      • Adaptation of the marine species
      • Plankton
      • Benthos
      • Socio-economic System
      • Modeling
  • TEAM
    • Management Team
    • Adjoint Researchers
    • Students
    • Academic Council
    • Principal investigators
    • Postdoctoral Researchers
    • International Scientific Committee
    • Network collaboration
    • Associate Investigators
    • Research Assistants
    • National Advisory Board
  • PUBLICATIONS
    • Scientific
      • Papers
      • Books and Monographs
      • Thesis
    • Outreach
      • Articles
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Papers

Línea de investigaciónAñoAutoresTítuloRevistaResumen
Productividad marina2018Aracena C., González H., Garcés J., Lange C., Pantoja S., Muñoz S., Teca E., Tejos E.


Infuence of summer conditions on surface water properties
and phytoplankton productivity in embayments of the South Shetland
Islands
Polar BiologyPhytoplankton productivity in glaciomarine embayments of the West Antarctic Peninsula is constrained because of extensive thermohaline variability, which is due to seasonal sea-ice and glacial melting. To determine whether or not this afects the biology of the water column, we explored the infuence of surface water properties on phytoplankton productivity in four embayments of the South Shetland Islands (SSI) during late summer of 2013. We analyzed hydrographic, climatic, and primary productivity satellite data (wind velocity, sea-ice cover, and chlorophyll-a), in situ CTD measurements of physical and chemical characteristics, new estimates of net primary production (NPP), and surface water samples for chlorophylla, nutrients, biogenic silica, and plankton composition...Leer artículo
Adaptación de las especies marinas2017Morales K., Sánchez R., Bruning P., Cárdenas L., Manríquez P., Brante A.A multiple microsatellite assay to evaluate the mating behavior of the intensively exploited marine gastropod Concholepas concholepasThe Nautilus The study of reproduction and mating beahavior constitutes a main issue in biology, ecology and evolution, given its relation with fitness traits. Here, we developed a simple microsatellite multiple assay to evaluate the mating strategy and male reproductive success of the marine gastropod Concholepas concholepas (Bruguie `re, 1789),an important fishery resource and a key predator species of Chilean rocky shore communities. Concholepas concholepas is a dioecious species with internal fertilization, encapsulation, and long larval phase. Ver PDF
Productividad marina2017Quiroga E., Ortiz P., González-Saldías R., Reid B., Tapia F., Pérez-Santos I., Rebolledo L., Mansilla R., Pineda C., Cari I., Salinas N., Montiel A., Gerdes D.Seasonal patterns in the benthic realm of a glacial fjord (Martinez Channel, Chilean Patagonia): the role of suspended sediment...
Marine Ecology Progress Series
Complex marine−terrestrial interactions characterize Chilean fjords, where benthic communities influence the distribution of organic matter (OM). We examined spatial and seasonal changes in the hydrography, sediment conditions and soft-bottom macrobenthic, meiobenthic, and total microbial biomass in a glacial Patagonian fjord (Martinez Channel, Chile). The transport of a high load of glacial mineral and particulate OM to the fjord in the austral summer coincided with low total live benthic biomass. Ver PDF
Bentos2017Rojas-Hernández N., Véliz D., Riveros M., Fuentes J., Pardo L.Highly Connected Populations and Temporal Stability in Allelic Frequencies of a Harvested Crab from the Southern Pacific Coast
Plos One For marine invertebrates with a benthic adult form and a planktonic larva phase, the connectivity
among populations is mainly based on larval dispersal. While an extended larval
phase will promote gene flow, other factors such as an intensive fishery and geographical
barriers could lead to changes in genetic variability. In this study, the population genetic
structure of the commercial crab Metacarcinus edwardsii was analyzed along 700 km of the
Chilean coast.
Ver PDF
Bentos2017Cruces E., Flores-Molina M., Díaz M., Huovinen P., Gómez I.
Phenolics as photoprotective mechanism against combined action of UVradiation and temperature in the red alga Gracilaria chilensis?
Appl Phycol The rhodophyte Gracilaria chilensis is a structuring
species of the estuarine and fjord systems in southern
Chile and is commercially exploited from natural and farmed
populations. Due to its capacity to tolerate extreme variations
in environmental conditions, this species is an excellent model
organism to examine stress tolerance mechanisms. The present
study examined the combined effect of temperature and
UV radiation on the reproductive phases of G. chilensis
(carposporophyte, tetrasporophyte, and vegetative) at the lower
and upper intertidals of the Valdivia River estuary. The
concentration of phenolic compounds and their antioxidant
capacity as well as the inhibition of primary photochemical
reactions, measured as the fluorescence of photosystem II,
was determined.
Ver PDF
Plancton2017Davis D., Hofmann E., Klinck J., Piñones A., Dinniman D.Distributions of Euphausia superba, Euphausia crystallorophias, and Pleuragramma antarcticum
and correlations with environmental variables in the western Ross Sea, Antarctica
Marine Ecology
Progress Series
Antarctic krill (Euphausia superba), crystal krill (Euphausia crystallorophias), and Antarctic silverfish (Pleuragramma antarcticum) are key mid-trophic level species in the Ross Sea connecting primary production to the upper trophic levels. Distributions of these species were constructed from net-based and acoustic observations collected in the western Ross 24 Sea from 1988-2004. Ver PDF
Productividad marina2017Domenici P., Torres R., Manrı́quez P.Effects of elevated carbon dioxide and temperature on locomotion and the repeatability of lateralization in a keystone marine molluscJournal of Experimental Biology Recent work has shown that the behaviour of marine organisms can be affected byelevated PCO2, although little is known about the effect of multiple stressors. We therefore investigated the effect of elevated PCO2 and temperature on locomotion and behaviour during prey searching in the marine gastropod Concholepas concholepas,a predator characteristic of the southeastern Pacific coast. Ver PDF
Bentos2017Fica E., Díaz R., Valdivia N.
General spatial spectral variation in rocky intertidal communities from three biogeographical regions
Journal of BiogeographyUnderstanding general spatial patterns of multiple species is a central aim of biogeography. Spatial analyses of coastal marine assemblages have shown an emergent pattern in that the variability in population abundances increases with increasing spatial scale of observation; i.e. a “red” spectrum of variation in population abundances. Ver PDF
Adaptación de las especies y Productividad marina2017Gaitán-Espitia J., Villanueva P., López J., Torres R., Navarro J., Bacigalupe.Spatio-temporal environmental variation mediates geographical differences in phenotypic responses to ocean acidification
Biology LettersPhenotypic plasticity is expected to play a major adaptive role in the response of species to ocean acidification (OA), by providing broader tolerances to changes in pCO2 conditions. However, tolerances and sensitivities to future OA may differ among populations within a species because their particular environmental context and genetic backgrounds. Ver PDF
Productividad marina2017Galán A., Thamdrup B., Saldías G., Farías L.Vertical segregation among pathways mediating nitrogen loss (N2 and N2O production) across the oxygen gradient in a coastal up welling ecosystem BiogeosciencesThe upwelling system off central Chile (36.5◦S) isseasonallysubjectedtooxygen(O2)-deficientwaters,with a strong vertical gradient in O2 (from oxic to anoxic conditions) that spans a few metres (30–50m interval) over the shelf. This condition inhibits and/or stimulates processes involved in nitrogen (N) removal (e.g. anammox, denitrification, and nitrification).Ver PDF
Productividad marina2017Gaonkar C., Kooistra W., Lange C., Montresor M., Sarno D.Two new species in the Chaetoceros socialis complex (Bacillariophyta): C. sporotruncatus and C. dichatoensis, and characterization of its relatives, C. radicans and C. cinctusPhycological Society of America The diatom genus Chaetoceros is one of the most abundant and diverse phytoplankton in marine and brackish waters worldwide. Within this genus, Chaetoceros socialis has been cited as one of the most common species. However, recent studies from different geographic areas have shown the presence of pseudo-cryptic diversity within the C. socialis complex. Ver PDF
Bentos2017Gebauer P., Paschke K., Vera C., Toro J., Pardo M., Urbina M.Lethal and sub-lethal effects of commonly used anti-sea lice formulations on non-target crab Metacarcinus edwardsii larvaeChemosphereThe pesticides used by the salmon industry to treat sea lice, are applied in situ via a bath solution and are subsequently discharged into the surrounding medium. The effects of cypermethrin, deltamethrin, azamethiphos and hydrogen peroxide were assessed on the performance of Metacarcinus edwardsii larvae, an important crab for Chilean fishery.
Ver PDF
Bentos2017Goecke F., Aránguiz-Acuña A., Palacios M., Muñoz-Muga P., Rucki M., Vítová M.
Latitudinal distribution of lanthanides contained in macroalgae in Chile: an inductively coupled plasma-mass spectrometric (ICP-MS) determination
Journal of Applied PhycologyLanthanide compositions of 17 Chilean macroalgal specieswereanalyzedbyinductivelycoupledplasmamassspectrometry. Samples were collected from four distinct areas (from 23° to 53° S) along the coast of Chile, in the spring of 2014. Lanthanideswereconfirmedinallsamplesandwerefoundover a range of 0.0001–7.62 mg kg−1 dry weight, in agreement with concentrations found in non-polluted areas around the world. Ver PDF
Sistema socio-ecológico2017Hasbún-Mancilla O., Aldunce-Ide P., Blanco-Wells G., Browne-Sartori R.Framing climate change in Chile: discourse analysis in digital media Convergencia, Revista de Ciencias SocialesThis article presents a discourse analysis of four digital media press in Chile with regard to mitigation and adaptation to climate change. The research, unprecedented for the Chilean case, is aimed at acknowledging the news framings by means of which climate change is communicated, since the media are the main source of information on climate change for decision makers and citizens.
Ver PDF
Adaptación de las especies2017Jacob B., Von Dassow P., Salisbury J., Navarro J., Vargas C.Impact of low pH/high pCO2 on the physiological response and fatty acid content in diatom Skeletonema pseudocostatum
Journal of the Marine Biological Association of the United KingdompCO2/pH perturbation experiments were carried out under two different pCO2 levels to evaluate effects of CO2-driven ocean acidification on semi-continuous cultures of the marine diatom Skeletonema pseudocostatum CSA48. Under higher pCO2/ lowered pH conditions, our results showed that CO2-driven acidification had no significant impact on growth rate, chlorophyll-a, cellular abundance, gross photosynthesis, dark respiration, particulate organic carbon and particulate organic nitrogenbetweenCO2-treatments,suggestingthatS.pseudocostatumisadaptedtotoleratechangesof~0.5unitsofpHunderhigh pCO2 conditions. Ver PDF
Plancton2017Lagleraa L., Tovar-Sánchez A., Iversend M., González H., Naik H., Mangeshg G., Assmyh P., Klaas C., Mazzocchi M., Montresor M., Naqvig S., Smetacek V., Wolf-Gladrowi D.Iron partitioning during LOHAFEX: Copepod grazing as a major driver for iron recycling in the Southern Ocean Marine ChemistryThe LOHAFEX iron fertilization experiment was conducted for 39 days in the closed core of a cyclonic mesoscale eddy located along the Antarctic Polar Front in the Atlantic sector of the Southern Ocean. Mixed layer (ML) waters were characterized by high nitrate (~20μM), low dissolved iron (DFe ~0.2 nM) and low silicate concentrations (below 1μM) restricting diatom growth. Ver PDF
Productividad marina2017Lara C., Saldías G., Westberry T., Behrenfeld M., Broitman B.First assessment of MODIS satellite ocean color products (OC3 and nFLH) in the Inner Sea of Chiloé, northern Patagonia Latin American Journal of Aquatic Research The use of remote sensing has allowed enormous progress in our understanding of biophysical processes worldwide. Despite their importance, the use of satellite bio-optical products is still limited due to optical complexity. In this study we assess the performance of the Moderate Resolution Imaging Spectroradiometer algorithm for chlorophyll-a (MODIS-OC3) and of normalized Fluorescence Line Height (nFLH), in inner waters of northern Chilean Patagonia (41°-45ºS). Ver PDF
Productividad marina2017Lee M., Torres R., Manríquez P.The combined effects of ocean warming and acidification on shallow-water meiofaunal assemblagesMarine Environmental ResearchClimate change due to increased anthropogenic CO2 in the atmosphere is causing an increase in seawater temperatures referred to as ocean warming and a decrease in seawater pH, referred to as ocean acidification. The meiofauna play an important role in the ecology of marine ecosystems and the functions they provide. Using microcosms, meiofaunal assemblages were exposed to two temperatures (15 and 19 °C) and two pHs (pCO2 of 400 and 1000 ppm), both individually and in combination, for a period of 90 days. Ver PDF
Bentos2017López B., Tellier F., Retamal‑Alarcón J., Pérez‑Araneda K., Fierro A., Macaya E., Tala F., Thiel M.Phylogeography of two intertidal seaweeds, Gelidium lingulatum and G. rex (Rhodophyta: Gelidiales), along the South East Pacific: patterns explained by rafting dispersal?
Marine BiologyRafting on floating seaweeds facilitates dispersal of associated organisms, but there is little information on how rafting affects the genetic structure of epiphytic seaweeds. Previous studies indicate a high presence of seaweeds from the genus Gelidium attached to floating bull kelp Durvillaea antarctica (Chamisso) Hariot. Ver PDF
Bentos2017López B., Macaya E., Tala F., Tellier F., Thiel M.The variable routes of raftings: Stranding dinamics of floating bull kelp Durvillea Antarctica (Fucales, Phaeophyceae) on beaches in the se PacificPhycological Society of America
Dispersal on floating seaweeds depends on
availability, viability, and trajectories of the rafts. In
the southern hemisphere, the bull kelp Durvillaea
antarctica is one of the most common floating
seaweeds, but phylogeographic studies had shown
low connectivity between populations from
continental Chile, which could be due to limitations
in local supply and dispersal of floating kelps.
Ver PDF
Bentos2017López D., Camus P., Valdivia N., Estay S.High temporal variability in the occurrence of consumer–resource interactions in ecological networks
OikosEcological networks have been used to represent interactions between species as fixed linkages despite that populations naturally oscillate over time and space. As such, the influence of the persistence of linkages between species in communities has been overlooked. Unfortunately, empirical analysis of the temporal variation of trophic networks is constrained by the lack of data with high spatial, temporal and taxonomic resolution. Ver PDF
Adaptación de las especies2017Martínez D., Oyarzún R., Pontigo J., Romero A., Yáñez A., Vargas-Chacoff L.Nutritional Immunity Triggers the Modulation of Iron Metabolism Genes in the Sub-Antarctic Notothenioid Eleginops maclovinus in Response to Piscirickettsia salmonisFrontiers in ImmunologyIron deprivation is a nutritional immunity mechanism through which fish can limit the amount of iron available to invading bacteria. The aim of this study was to evaluate the modulation of iron metabolism genes in the liver and brain of sub-Antarctic notothenioid Eleginops maclovinus challenged with Piscirickettsia salmonis. Ver PDF
Adaptación de las especies2017Martínez D., Oyarzún R., Vargas-Lagos C., Pontigo J., Soto-Dávila M., Saravia J., Romero A., Núñez J., Yáñez A., Vargas-Chacoff L.Identification, characterization and modulation of ferritin-H in the sub-Antarctic Notothenioid Eleginops maclovinus challenged with Piscirickettsia salmonis.Developmental and Comparative ImmunologyFerritin is a major iron storage protein essential not only in the infectious process, but also in any circumstance generating oxidative stress. In this study, the cDNA coding sequence of ferritin-H was obtained from the sub-Antarctic Notothenioid fish Eleginops maclovinus through transcriptomic analysis of the head kidney. Ver PDF
Productividad marina2017Mendesa R., Saldías G., De Castro M., Gómez-Gesteira M., Vaza N., Dias J.Seasonal andinterannual variabilityofthe Douroturbid riverplume, northwestern IberianPeninsula Remote Sensing of
Environment
Received 17February2016 Received inrevisedform10March2017 Accepted5April2017 Availableonlinexxxx
The Douro Riverrepresentsthemajorfreshwaterinput intothecoastaloceanofthenorthwesternIberianPeninsula.The seasonalandinterannualvariabilityofitsturbidplumeisinvestigatedusingoceancolorcomposites from MODIS (Moderate Resolution Imaging Spectroradiometer) sensor aboard the Aqua and Terra satellites (2000–2014) and long-term records of river discharge, wind and precipitation rate. Ver PDF
Productividad marina2017Montero P., Daneri G., Tapia F., Iriarte JL., Crawford D. Diatom blooms and primary production in a channel ecosystem of central Patagonia Latin American Journal of Aquatic Research Here we report on the seasonal productivity cycle at a fixed station in the Puyuhuapi Channel (44ºS, 73ºW), Chilean Patagonia. The analysis of in situ water column data and longer-term records of satellitederived surface ocean color (Chl-a) highlighted two contrasting seasons. Ver PDF
Sistema socio-ecológico2017Nahuelhual L., Vergara X., Kusch A., Campos C., Droguett D.Mapping ecosystem services for marine spatial planning: Recreation opportunities in Sub-Antarctic Chile Marine Policy
The ecosystem services approach has increasingly emerged as a core requirement of ecosystem-based managementofthemarinespace.Inthiscontext,explicitquantificationandmappingofecosystemservicesisconsidered key. This research proposes a methodological framework that combines Geographic Information Systems and participatory techniques to map the ecosystem service of recreation opportunities, provided by coastal and marine ecosystems. Ver PDF
Bentos2017Navarro N., Figueroa F., Korbee N.Mycosporine-like amino acids vs carrageenan yield in Mazzaella laminarioides (Gigartinales; Rhodophyta) under high and low UV solar irradiance
International Phycological Society
The effects of increased solar photosynthetically active radiation (PAR) and ultraviolet radiation (UVR) on biomass, mycosporine-like amino acid (MAA) content, and carrageenan yield were studied for 14 days in tank-cultivated tetrasporophytes and gametophytes of Mazzaella laminarioides from the Magellan Strait. Ver PDF
Productividad marina2017Mork Olsen L., Hernández K., Van Ardelan M., Iriarte J., Bizsel C.K., Olsen Y.Responses in bacterial community structure to waste nutrients from aquaculture: an in situ
microcosm experiment in a Chilean fjord
Aquacult Environ Interact
Chilean salmon farms release inorganic nutrients excreted by the fish into the surrounding water in Patagonian fjords. The objective of this experiment from the Comau Fjord (42.2° S) in southern Chile was to study how increased input of ammonium (NH4) and phosphate (PO4) from salmon farms might affect the community structure of bacteria in surface waters where fish farms are located.Ver PDF
Bentos2017Ortiz M., Hermosillo-Nuñez B., González J., Rodríguez-Zaragoza F., Gómez I., Jordán F.Quantifying keystone species complexes: Ecosystem-based conservation management in the King George Island (Antarctic Peninsula) Ecological Indicators
A keystone species complex (KSC) is a small set of interacting species that play an outstandingly important role in community organization. TwoKSC indices aresuggested andhavebeencalculated inthe coastalbenthic/pelagic ecosystem of Fildes Bay, King George Island (Antarctica). Ver PDF
Productividad marina y Adaptación de las especies2017Osores S., Lagos N., San Martín V., Manríquez P., Vargas R., Torres R., Navarro J., Poupin G., Saldías G., Lardies M.Plasticity and inter-population variability in physiological and life-history traits of the mussel Mytilus chilensis: A reciprocal transplant experimentJournal of Experimental Marine Biology and EcologyGeographically widespread species must cope with environmental differences between habitats. Information concerning geographic variations in response to climate variability is critical because many morphological, life-history and physiological traits show variation across space. Ver PDF
Bentos2017Pardo L., Ceroni C., Riveros M., Ernst B., Pino J.Morphology of seminal receptacle of the harvested golden crab Chaceon chilensis and its implication in the fertilization processInvertebrate Biology The external and internal architecture of crab seminal receptacles are closely associated with mating behavior, sperm transfer, and storage patterns, and ultimately reproductive success. Therefore, describing their anatomy contributes to the development of a greater understanding of crab reproductive biology. Ver PDF
Bentos2017Pardo L., Riveros M., Fuentes J., Pinochet R., Cárdenas C., Sainte-Marie B.High fishing intensity reduces females’ sperm reserve and brood fecundity in a eubrachyuran crab subject to sex- and size-biased harvest ICES Journal of Marine Science Size-selective male fisheries may result in sperm limitation whereby the number of sperm is insufficient to fertilize all oo¨cytes produced by females. In eubrachyuran crabs, females have seminal receptacles for sperm storage which may reduce the risk of sperm limitation over their lifetime. Ver PDF
Bentos2017Pérez-Matus A., Ospina-Álvarez A., Camus P., Carrasco S., Fernández M., Gelcich S., Godoy N., Ojeda P. Pardo L., Rozbaczylo, Subida M., Thiel M., Wieters E., Navarrete S. Temperate rocky subtidal reef community reveals human impacts across the entire foodweb Marine Ecology Progress Series Table S1 presents the dataset included in our food web. The designation “taxa” corresponds to the core unit of analysis in the food web. The subtidal food web contains a total of 147 taxa, from which 133 were resolved to the following taxonomic categories: 3 phyla, 2 classes, 1 infraclass, 1 order, 18 genus, 103 species. The remaining taxa correspond to: i) species lumped by taxonomic and trophic relatedness (10 taxa containing lumped groups of amphipods, isopods and polychaetes), ii) resources lumped by ecological function (biofilm, plankton, detritus and human; the latter included in the node fisheries Ver PDF
Productividad marina2017Pireda R., Sarno D., Lange C., Tomasino P., Zingone A., Montresor M.Diatom resting stages in surface sediments: a pilot study comparing Next Generation Sequencing and Serial Dilution Cultures
Cryptogamie, Algologie Several diatom species produce resting stages as part of their life cycle. These resting stages accumulate in the sediments where they can remain for a long time before eventually being re-suspended in the water column and switching to active growth. Until now, the abundance and diversity of viable diatom resting stages have been assessed using the Serial Dilution Culture (SDC) method. Ver PDF
Bentos2017Pérez-Matus A., Ospina-Álvarez A., Camus P., Carrasco S., Fernández M., Gelcich S., Godoy N., Ojeda P., Pardo L., Rozbaczylo N., Subida M., Thiel M., Wieters E., Navarrete S.Temperate rocky subtidal reef community reveals human impacts across the entire food web
Marine Ecology Progress SeriesFood webs as representations of who eats whom are at the core of community ecology. Incorporation of tools from network theory enables assessment of how complex systems respond to
natural and human-induced stressors, revealing how
harvesting may degrade the properties and resilience of food webs. Ver PDF
Bentos2017Rodríguez S., Valdivia N.Mesoscale spatiotemporal variability in a complex host-parasite system influenced by intermediate host body size
Peer JParasites are essential components of natural communities, but the factors that generates kewed distributions of parasite occurrences and abundances across host populations are not well understood. Ver PDF
Plancton2017Schneider W., Donoso D., Garcés-Vargas G., Escribano R.Water-column cooling and sea surface salinity increase in the upwelling region off central-south Chile driven by a poleward displacement of the South Pacific HighProgress in OceanographyHere we present results of direct observations of seawater temperature and salinity over the continental shelf off central-south Chile that shows an unprecedented cooling of the entire water column and an increase in upper layer salinity during 2002 to 2013. We provide evidence that this phenomenon is related to the intensification but mostly to a recent southward displacement of the South Pacific High over the same period, from 2007 on. Ver PDF
Plancton2017Valdés., Fernández C., Molina V., Escribano R.Nitrogen excretion by copepods and its effect on ammonia-oxidizing communities from a coastal upwelling zone
Limnology and OceanographyThe role of zooplankton in microbial nitrogen turnover in marine environments is poorly understood. Here, we present results from two experiments designed to determine the excretion rate of ammonium and dissolved organic nitrogen (DON) by dominant copepods, Acartia tonsa and Paracalanus cf indicus, fed with two natural sized-fractioned diets (20–150 lm and<20 lm), and its possible effects on the transcriptional activity of ammonia monooxygenase subunit A (amoA), a functional marker for ammonia-oxidizing archaea (AOA) and bacteria (AOB), as a response to the input of ammonium and DON by copepod excretion, during autumn and winter in central/southern Chile. Ver PDF
Plancton2017Valdés V., Fernández C., Molina V., Escribano R., Joux F.Dissolved Compounds Excreted by Copepods Reshape the Active Marine Bacterioplankton Community CompositionFrontiers in Marine ScienceCopepods are important suppliers of bioreactive compounds for marine bacteria through
fecal pellet production, sloppy feeding, and the excretion of dissolved compounds.
However, the interaction between copepods and bacteria in the marine environment is
poorly understood. Ver PDF
Bentos2017Valdivia N., Segovia-
Rivera V., Fica E., Bonta C., Aguilera M., ­Broitman B.
Context-­dependent­functional­dispersion­across­similar­rangesof­trait­space­covered­by­intertidal­rocky­shore­communities
Ecology and EvolutionFunctional diversity is intimately linked with community assembly processes, but its large- scale patterns of variation are often not well understood. Here, we investigated the spatiotemporal changes in multiple trait dimensions (“trait space”) along vertical intertidal environmental stress gradients and across a landscape scale. Ver PDF
Adaptación de las especies2017Vargas-Chacoff L., Muñoz J., Hawes C., Oyarzún R., Pontigo J., Saravia J., González M., Mardones O., Labbé B., Moreraf F., Bertrán C., Pino J., Wadsworthd S.,Yáñez A.Ectoparasite Caligus rogercresseyi modifies the lactate response in Atlantic salmon (Salmo salar) and Coho salmon (Oncorhynchus kisutch) Veterinary Parasitology
Although Caligus rogercresseyi negatively impacts Chilean salmon farming, the metabolic effects of infection by this sea louse have never been completely characterized. Therefore, this study analyzed lactate responses in the plasma, as wellas the liver/muscle lactate dehydrogenase(LDH) activity and geneexpression, in Salmosalar and Oncorhynchus kisutch infested by C. rogercresseyi. Ver PDF
Bentos2017Véliz D., Duchesne P., Rojas-Hernández N., Pardo L.
Statistical power to detect multiple paternity in populations of highly fertile species: how many females and how many offspring should be sampled?
Behavioral Ecology and SociobiologyOne of the central issues of behavioral ecology focuses on the probability of detecting multiple paternity in a scenario of polygamy. The main problem for this kind of analysis arises in species with large number of offspring in the same litter and large population sizes in which only a small fraction of progeny and females can be analyzed. Here, we present a method to estimate the statistical power to detect multiple paternity for these species. Ver PDF
Adaptación de las especies2017Vergara-Amado J., Silva., Manzia C. Nespolob R., Cárdenas L.Differential expression of stress candidate genes for thermal tolerance in the sea urchin Loxechinus albus Journal of Thermal BiologyMarine ectotherms inhabiting intertidal and shallow subtidal environments are continuously exposed to diurnal tidal cycles and seasonal variability in temperature. These organisms have adaptive mechanisms to maintain cellular homeostasis, irrespective of thermal environmental variation. In this study, we describe the molecular responses to thermal stress inthe edible sea urchinLoxechinus albus.Ver PDF
Bentos2017Villaseñor-Parada C., Pauchard A., Macaya E.Ecology of marine invasions in continental Chile: What do we know and we need to know?Revista de Biología Marina y Oceanografía The Chilean coast has fewer reports of introduced species for other shores worldwide, which could correspond to a natural phenomenon generated by oceanographic conditions, or an artifact caused by lack of available information. We analyzed 71 papers indexed in Web of Science related with ecology of marine invasions in the Chilean coast, published between 1998-2014, and we determined the current state of the discipline in Chile, and identified the trends (e.g., temporal, spatial, taxonomic) of the investigation. Ver PDF
Plancton2016Anabalón V., Morales C., González, H., Menschel E., Schneider W., Hormazabal S., Valencia L., Escribano R.Micro-phytoplankton community structure in the coastal upwelling zone off Concepción (central Chile): Annual and inter-annual fluctuations in a highly dynamic environment Progress in OceanographyAn intensification of upwelling-favorable winds in recent decades has been detected in some of the main eastern boundary current systems, especially at higher latitudes, but the response of coastal phytoplankton communities in the Humboldt Current System (HCS) remains unknown. At higher latitudes in the HCS (35–40S), strong seasonality in wind-driven upwelling during spring-summer coincides with an annual increase in coastal chlorophyll-a and primary production, and a dominance of microphytoplankton. Ver PDF
Bentos2016Andrade‑Villagrán P., Chaparro O., Pardo L., Paredes‑Molina F., Thompson R.Embryo brooding and its effect on feeding in the bivalve Gaimardia bahamondei Osorio & Arnaud, 1984 Helgol Mar Res Gaimardia bahamondei is a small gonochoric bivalve which lives attached to subtidal algae. Females brood their embryos in the suprabranchial region of the pallial cavity, in close proximity to the gill filaments. We found no signifi‑ cant difference in clearance rate between males (non‑brooders) and females (brooders), regardless of the numbers of embryos in the brood, suggesting that the presence of embryos does not interfere with particle capture by the brooding female. Ver PDF
Adaptación de las especies marinas
Productividad marina
2016Benítez S., Duarte C., López G., Manríquez P., Navarro J., Bonta C., Torres R., Quijón P.Ontogenetic variability in the feeding behavior of a marine amphipod in response to ocean acidificationMarine Pollution Bulletin Global stressors like ocean acidification (OA) are expected to influence the quality or palatibility of primary producers like algae. Ver PDF
Adaptación de las especies marinas2016Bertrán C., Fierro P., Encalada E., Peña-Cortés F., Tapia J., Hauenstein E., Vargas-Chacoff L.Macrobenthos of the coastal Budi Lagoon, southern Chile: Changes associated with seasonal environmental variationBrazilian Journal of OceanographyThe purpose of the present study was to investigate the seasonal relationship of macrobenthos richness and abundance with sediment characteristics (i.e. texture and organic material) for the coastal Budi Lagoon in southern Chile. Physicochemical measurements and macrobenthos samples were taken over the course of a year at nine sampling stations. Ver PDF
Bentos2016Cruces E., Rautenberger R., Rojas-Lillo Y., Cubillos V., Arancibia-Miranda N., Ramírez-Kushel E., Gómez I.Physiological acclimation of Lessonia spicata to diurnal changing PAR and UV radiation: differential regulation among down- regulation of photochemistry, ROS scavenging activity and phlorotannins as major photoprotective mechanismsPhotosynth ResIntertidal macroalgae are constantly subjected to high variations in the quality and quantity of incident irradiance that can eventually generate detrimental effect on the photosynthetic apparatus. The success of these organisms to colonize the stressful. Ver PDF
Bentos2016Flores-Molina M., Rautenberger R., Muñoz P., Huovinen P., Gómez I.Stress Tolerance of the Endemic Antarctic Brown Alga Desmarestia anceps to UV Radiation and Temperature is Mediated by High Concentrations of PhlorotanninsPhotochemistry and PhotobiologyThe endemic Antarctic brown macroalga Desmarestia anceps is strongly shade-adapted, but shows also a high capacity to cope with different environmental stressors, e.g. UV radiation and temperature. Therefore, this species colonizes wide depth gradients, which are characterized by changing environmental conditions. Ver PDF
Adaptación de las especies marinas2016Gaitán-Espitia J., Sánchez R., Bruning P., Cárdenas L.Functional insights into the testis transcriptome of the edible sea urchin Loxechinus albusScientific RepoRtsThe edible sea urchin Loxechinus albus (Molina, 1782) is a keystone species in the littoral benthic systems of the Pacific coast of South America. The international demand for high-quality gonads of this echinoderm has led to an extensive exploitation and decline of its natural populations. Ver PDF

Plancton2016Giesecke R., Vallejos T., Sanchez M., Teiguiel K.Plankton dynamics and zooplankton carcasses in a mid-latitude estuary and their contributions to the local particulate organic carbon poolContinental Shelf Research Estuaries are among the most productive aquatic ecosystems in coastal areas. Their productivity is linked to the formation of fronts generating mixing and retention of nutrients that can be used by autotrophs. Estuaries exhibit strong thermoclines and haloclines that may significantly affect zooplankton survival, while producing carcasses that could act as an alternative pathway of particulate organic carbon recycling. Ver PDF
Bentos2016Gómez I., Español S., Véliz K., Huovinen P.Spatial distribution of phlorotannins and its relationship with photosynthetic UV tolerance and allocation of storage carbohydrates in blades of the kelp Lessonia spicataMar Biol The action of an intercalary meristem in the fronds determines the growth patterns of the sub-Antarctic kelp Lessonia spicata, which result in gradients in physiological activity and tissue composition. Ver PDF
Plancton
Productividad marina
2016González H., Graeve M., Kattner G., Silva N., Castro L., Iriarte J., Osmán L., Daneri G., Vargas C.Carbon flow through the pelagic food web in southern Chilean Patagonia: relevance of Euphausia vallentini as a key speciesMarine Ecology Progress Series
The southernmost Patagonian region constitutes a major glaciered area with a high freshwater input loaded with particulate and dissolved matter. We assessed the relevance of the terrestrial (allochthonous) and marine (autochthonous) matter that permeates into the fjord and channel system and their possible impact on the euphausiid-based food web. Ver PDF
Adaptación de las especies2016Hu Z-M., Guillemin M.L, Coastal upwelling areas as safe havens during climate warmingJournal of Biogeography Seaweeds have long been recognized as
‘ecosystem engineers’ and carbon sinks in
coastal marine ecosystems. However,
recent ocean warming has had drastic ecophysiological
impacts on seaweed assemblages
and hence coastal community
structure (Wernberg et al., 2011, 2013). Ver PDF
Bentos2016Huovinen P. Ramírez J., Gómez I.Underwater Optics in Sub-Antarctic and Antarctic Coastal EcosystemsPlos OneUnderstanding underwater optics in natural waters is essential in evaluating aquatic primary
production and risk of UV exposure in aquatic habitats. Changing environmental conditions
related with global climate change, which imply potential contrasting changes in underwater
light climate further emphasize the need to gain insights into patterns related with underwater
optics for more accurate future predictions. Ver PDF
Productividad marina2016Iriarte J., León-Muñoz J., Marcé R., Clément A., Lara C.
Influence of seasonal freshwater streamflow regimes on phytoplankton blooms in a Patagonian fjord New Zealand Journal of Marine and Freshwater ResearchVer PDF
Sistemas socio-ecológicos2016Laterra P., Barral P., Carmona A., Nahuelhual L.Focusing Conservation Efforts on Ecosystem Service Supply May Increase Vulnerability of Socio-Ecological SystemsPlos One Growing concern about the loss of ecosystem services (ES) promotes their spatial representation
as a key tool for the internalization of the ES framework into land use policies. Paradoxically,
mapping approaches meant to inform policy decisions focus on the magnitude
and spatial distribution of the biophysical supply of ES, largely ignoring the social mechanisms
by which these services influence human wellbeing.Ver PDF
Productividad marina2016Manríquez P., Jara M.,Seguel M., Torres R., Alarcón E., Lee M.Ocean Acidification and Increased Temperature Have Both Positive and Negative Effects on Early Ontogenetic Traits of a Rocky Shore Keystone Predator SpeciesPlos One The combined effect of ocean acidification and warming is expected to have significant
effects on several traits of marine organisms. The gastropod Concholepas concholepas is a
rocky shore keystone predator characteristic of the south-eastern Pacific coast of South
America and an important natural resource exploited by small-scale artisanal fishermen
along the coast of Chile and Peru. Ver PDF
Plancton2016Menschel E., González H., Giesecke R.Coastal-oceanic distribution gradient of coccolithophores and their role in the carbonate flux of the upwelling system off Concepción, Chile (36°S)J. Plankton ResThe role of coccolithophores in the biogenic carbonate cycle was studied in the coastal upwelling zone off
Concepción, Chile (36°S), and in adjacent oceanic waters during spring 2004. Coccolithophore abundance and
diversity increased steadily from coastal to oceanic regions. Ver PDF
Bentos2016Moreno-Pino M., De la Iglesia R., Valdivia N., Henríquez-Castilo C., Galán A., Diez B., Trefault N.Variation in coastal Antarctic microbial community composition at sub-mesoscale: spatial distance or environmental ltering?FEMS Microbiology Ecology
Spatial environmental heterogeneity infuences diversity of organisms at different scales. Environmental fltering suggests
that local environmental conditions provide habitat-specifc scenarios for niche requirements, ultimately determining
the composition of local communities. Ver PDF
Sistema socio-ecológico2016Nahuelhual L., Benra F., Rojas F., Díaz I., Carmona A.Mapping social values of ecosystem services: What is behind the map?Ecology and SocietyA growing interest in mapping the social value of ecosystem services (ES) is not yet methodologically aligned with what
is actually being mapped. We critically examine aspects of the social value mapping process that might influence map outcomes and
limit their practical use in decision making. Ver PDF
Adaptación de la especies2016Navarro J., Labraña W., Chaparro O., Cisternas B., Ortiz A.Physiological Constraints in Juvenile Ostrea chilensis Fed the Toxic Dinoflagellate Alexandrium catenellaEstuaries and Coasts Frequent blooms of the dinoflagellate Alexandrium
catenella in southern Chile encouraged undertaking the present
study which uses the oyster Ostrea chilensis as a model for
evaluating the feeding, growth, lipid storage and mortality
responses to diets containing paralytic shellfish poisoning
(PSP) produced by A. catenella. M. Ver PDF
Adaptación de la especies
Productividad marina
2016Navarro J., Duarte C., Manríquez P., Lardies M., Torres R., Acuña K., Vargas C., Lagos N.Ocean warming and elevated carbon dioxide: multiple stressor
impacts on juvenile mussels from southern Chile
ICES Journal of Marine Science The combined effect of increased ocean warming and elevated carbon dioxide in seawater is expected to have significant physiological and ecological
consequences at many organizational levels of the marine ecosystem. In the present study, juvenile mussels Mytilus chilensis were reared for
80 d in a factorial combination of two temperatures (12 and 168C) and three pCO2 levels (380, 700, and 1000 matm). Ver PDF
Bentos2016Navarro N., Huovinen P., Gómez I.Stress tolerance of Antarctic macroalgae in
the early life stages
Revista Chilena de Historia Natural Early life stages of macroalgae, especially from polar species, can be highly vulnerable to physical
stressors, leading to important consequences for the fate of the whole population in scenarios of changing
environmental variability. Ver PDF
Bentos2016Navedo J., Fernández G., Valdivia N., Drever M., Masero J.Identifying management actions to increase foraging opportunities for shorebirds at semi-intensive shrimp farmsJournal of Applied Ecology Land-use change is a driver of biodiversity loss (Newbold
et al. 2015). The development and implementation of
measures to increase the suitability of existing modified
habitats for wildlife appears essential to conserve biodiversity. Ver PDF
Bentos2016Oyarzún P., Toro J., Garcés-Vargas J., Alvarado C., Guiñez R., Jaramillo R., Briones C., Campos B.Reproductive patterns of mussel Perumytilus purpuratus (Bivalvia: Mytilidae), along the Chilean coast: effects caused by climate change?Marine Biological Association of the United Kingdom
Reproductive cycles were studied in seven natural populations of the intertidal bivalve Perumytilus purpuratus, distributed in
a latitudinal gradient of 2400 km along the Chilean Pacific coast (20 –408S). The results, both qualitative (gametogenic
stages) and quantitative (GSI and GVF), over a period of 24 months, showed that these populations presented asynchrony
in the reproductive cycle. Ver PDF
Plancton2016Pavés H., Schlatter H., Fanco-Trecu V., Páez E., Sielfeld W., Araos V., Giesecke R., Batallés L., Cappozzo L.Breeding season of the South American fur seal (Arctocephalus australis, Otariidae: Carnivora): New data for establishing independent evolutionary histories?Revista de Biología Marina y Oceanografía The South American fur seal (SAFS) is distributed from Peru (Pacific Ocean) to Uruguay (Atlantic Ocean). However, there
is a section of coastline of about 2,300 km along the Chilean coast where no SAFS are recorded. Based on morphological
comparisons 3 geographic forms have been reported (Peruvian, South Chilean, Atlantic), whereas preliminary genetic studies
suggest the presence of 3 distinct genetic types (Peruvian, South Chile, Atlantic). Ver PDF
Bentos2016Peters-Didier J., Pardo L., Garrido O., Gallardo C.Reproductive biology of the commercial sea cucumber Athyonidium chilensis (Holothuroidea: Dendrochirotida) in southern ChileMarine Biological Association of the United Kingdom,Reproductive aspects of the sea cucumber Athyonidium chilensis were studied over a year in Valdivia, Chile, through gonad
index (GI) analysis, macro- and microscopic analysis of the gonads, fecundity and size at first sexual maturity estimations.
We also explored the reliability of live size estimators for their use in fisheries. Ver PDF
Plancton2016Piñones A., Fedorov A.Projected changes of Antarctic krill habitat by the end of the 21st centuryGeophys. Res. Lett.Climate change is rapidly shaping the living environment of the most abundant keystone
species of the Antarctic marine food web, Antarctic krill. Projected future changes for the krill habitat
include a sustained increase in ocean temperature and changes in sea ice and chlorophylla. Ver PDF
Adaptación de las especies2016Pontigo J., Agüero M., Sánchez P., Oyarzún R., Vargas-Lagos C., Mancilla J., Kossmanng H., Morerah F., Yáñez A., Vargas-Chacoff L.Identification and expressional analysis of NLRC5 inflammasome gene
in smolting Atlantic salmon (Salmo salar)
Fish & Shellfish Immunology The NOD-like receptors (NLRs) were recently identified as an intracellular pathogen recognition receptor
family in vertebrates. While the immune system participation of NLRs has been characterized and
analyzed in various mammalian models, few studies have considered NLRs in teleost species.Ver PDF
Bentos2016Rivas, C., Navarro C., Huovinen P., Gómez I.Photosynthetic UV stress tolerance of the Antarctic snow alga Chlorella sp. Modified by enhanced temperature?Revista Chilena de Historia Natural Photosynthetic characteristics and the effect of UV radiation and elevated temperature measured
were studied in Chlorella sp. isolated from a snow microalgal community at King George Island, Maritime Antarctica
through the chlorophyll florescence (rapid light curves and maximum quantum yield, respectively). Ver PDF
Plancton2016Robertson G., Wienecke B., Suazo C., Lawton K., Arata J., Moreno C.Continued increase in the number of black-browed albatrosses (Thalassarche melanophris) at Diego Ramírez, Chile.Polar Biol Black-browed albatrosses (Thalassarche melanophris)
are killed incidentally in commercial fishing
operations. Aerial surveys in 2002 and 2011 revealed the
number of black-browed albatrosses at the Diego Ramı´rez
and Ildefonso islands, Chile, increased by 52 and 18 %,
respectively. Ver PDF
Bentos2016Rodríguez S., D’Elía G., Valdivia N.The phylogeny and life cycle of two species of Profilicollis (Acanthocephala: Polymorphidae) in marine hosts off the Pacific coast of Chile.Journal of HelminthologyResolving complex life cycles of parasites is a major goal of parasitological research.
The aim of this study was to analyse the life cycle of two species of the
genus Profilicollis, the taxonomy of which is still unstable and life cycles unclear. Ver PDF
Adaptación de las especies2016Ruiz-Jarabo I., González-Wevar C., Oyarzún R., Fuentes J., Poulin E., Bertrán C., Vargas-Chacoff L.Isolation Driven Divergence in Osmoregulation in Galaxias maculatus (Jenyns, 1848) (Actinopterygii: Osmeriformes)Plos OneMarine species have colonized extreme environments during evolution such as freshwater
habitats. The amphidromous teleost fish, Galaxias maculatus is found mainly migrating
between estuaries and rivers, but some landlocked populations have been described in
lakes formed during the last deglaciation process in the Andes. Ver PDF
Bentos2016Salvador-Soler N., Macaya E., Rull-Lluch D., Gómez-Garreta A.
Nuclear DNA content in Gelidium chilense (Gelidiales, Rhodophyta) from the Chilean coastRevista de Biología Marina y Oceanografía There has been progress in novel additions of algal data to the Plant DNA C-values database during recent years;
however more information is still required. Specifically, in the case of red algae (Rhodophyta), from ~7000 species described up
to date, DNA C-values for only 196 species have been incorporated (~3%). Ver PDF
Productividad marina2016Schimmelmann A., Lange C., Schieber J., Francusc P., Ojala A.K.E., Zolitschkae B.Varves in marine sediments: A reviewEarth-Science ReviewsThe global compilation of reported marine varved sedimentary records throughout the Quaternary contains 52
sites. Marine varve deposition and preservation typically depend on environmental and sedimentological conditions,
such as a sufficiently high sedimentation rate, severe depletion of dissolved oxygen in bottom water to
exclude bioturbation by macrobenthos, and a seasonally varying sedimentary input to yield a recognizable rhythmic
varve pattern.Ver PDF
Bentos2016Segovia-Rivera V., Valdivia N.Independent effects of grazing and tide pool habitats on the early colonisation of an intertidal community on western Antarctic Peninsula.Revista Chilena de Historia Natural Prevailing environmental conditions can modulate the structuring role of biotic interactions. In
intertidal habitats, less stressful environmental conditions and/or higher grazer densities may allow grazing effects
to be stronger in tide pools than on emergent rocks. Ver PDF
Bentos2016Sepúlveda R., Valdivia N.Macrobenthic Community Changes of Intertidal Sandy Shores after a Mega-DisturbanceEstuaries and Coasts Large-scale events of destruction and mortality trigger
abrupt changes in the structure of natural communities.
Testing the magnitude of such effects and the resilience of
the impacted communities is difficult, however, because
large-scale disturbances are generally unpredictable and thus
available data are rare. Ver PDF
Bentos2016Sepúlveda R., Valdivia N.Localised Effects of a Mega-Disturbance: Spatiotemporal Responses of Intertidal Sandy Shore Communities to the 2010 Chilean EarthquakePlos OneDetermining the effects of unpredictable disturbances on dynamic ecological systems is
challenged by the paucity of appropriate temporal and spatial coverage of data. On 27 February
2010, an 8.8 Mw mega-earthquake and tsunami struck central Chile and caused
coastal land-level changes, massive damage to coastal infrastructure, and widespread mortality
of coastal organisms. Ver PDF
Bentos2016Talaa F. Velásquez M., Mansilla A., Macaya E., Thiela M.Latitudinal and seasonal effects on short-term acclimation of floating kelp species from the South-East PacificJournal of Experimental Marine Biology and Ecology Floating seaweeds are important dispersal vehicles for many organisms in cold-temperate waters between latitudes
30° and 60°. Molecular studies suggested that long-distance rafting of seaweeds is more prevalent at the
polar edges of their distribution but knowledge about their physiological status at high latitudes is limited. Ver PDF
Bentos2016Tejada-Martinez D., López D., Bonta C., Sepúlveda R., Valdivia N.Positive and negative effects of mesograzers on early- colonizing species in an intertidal rocky-shore communityEcology and Evolution
The ecological consequences of human-driven overexploitation and loss of keystone
consumers are still unclear. In intertidal rocky shores over the world, the
decrease of keystone macrograzers has resulted in an increase in the dominance
of herbivores with smaller body (i.e., “mesograzers”), which could potentially
alter community assembly and structure. Ver PDF
Adaptación de las especies2016Vargas-Chacoff L., Muñoz J., Hawes C., Oyarzún R., Pontigo J., Saravia J., González M., Morera F., Labbé B., Bertrán C., Mardones O., Pino J., Wadsworth S.Atlantic salmon (Salmo salar) and Coho salmon (Oncorhynchus kisutch) display differential metabolic changes in response to infestation by the ectoparasite Caligus rogercresseyiAquacultureCaligus rogercresseyi sea lice negatively impact Chilean salmonid farming, but no complete characterization for
the metabolic effects of Caligus infestation currently exists. Therefore, the aim of this study was to analyze the effects
of C. rogercresseyi infestation on the metabolic responses of Salmo salar and Oncorhynchus kisutch. Ver PDF
Adaptación de las especies2016Vargas-Chacoff L., Moneva F., Oyarzún R., Martínez D., Saavedra E., Ruiz-Jarabo I., Muñoz J.L.P., Bertrán C., Mancera J.M.
Metabolic responses to salinity changes in the subantarctic notothenioid teleost Eleginops maclovinusPolar BiolEleginops maclovinus is an endemic, subantarctic
Notothenioidei species. This study examined the
influence of different environmental salinities (5, 15, and
45 psu; and 32 psu as a control) on energy metabolism in E.
maclovinus over a period of 14 days. Ver PDF
Adaptación de las especies2016Villanueva P., Navarro J.Pre-ingestive selection e ciency in two populations of the razor clam Tagelus dombeii with di erent histories of exposure to paralytic shell sh poisoning (PSP)Marine and Freshwater Behaviour and PhysiologyWe studied toxic effects of the dinoflagellate Alexandrium catenella
on filtration activity and pre-ingestive selection efficiency in Tagelus
dombeii (razor clam). Ver PDF
Papers was last modified: julio 22nd, 2018 by admin

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