Click
here to close Hello! We notice that
you are using Internet Explorer, which is not supported by Echinobase
and may cause the site to display incorrectly. We suggest using a
current version of Chrome,
FireFox,
or Safari.
Biology (Basel)
2022 Nov 28;1112:. doi: 10.3390/biology11121723.
Show Gene links
Show Anatomy links
Feeding Ecology of Odontaster validus under Different Environmental Conditions in the West Antarctic Peninsula.
Zenteno-Devaud L
,
Aguirre-Martinez GV
,
Andrade C
,
Cárdenas L
,
Pardo LM
,
González HE
,
Garrido I
.
???displayArticle.abstract???
To study how Odontaster validus can influence the spatial structure of Antarctic benthic communities and how they respond to disturbance, it is necessary to assess potential dietary shifts in different habitats. We investigated the diets of O. validus from Maxwell Bay and South Bay in the West Antarctic Peninsula. A multifaceted approach was applied including in situ observations of cardiac stomach everted contents, isotopic niche, and trophic diversity metrics. Results confirm the flexible foraging strategy of this species under markedly different environmental conditions, suggesting plasticity in resource use. The data also showed evidence of isotopic niche expansion, high δ15N values, and Nacella concinna as a common food item for individuals inhabiting a site with low seasonal sea ice (Ardley Cove), which could have significant ecological implications such as new trophic linkages within the Antarctic benthic community. These results highlight the importance of considering trophic changes of key species to their environment as multiple ecological factors can vary as a function of climatic conditions.
3190455 Agencia Nacional de Investigación y Desarrollo (ANID), 11180466 Agencia Nacional de Investigación y Desarrollo (ANID), 15150003 Agencia Nacional de Investigación y Desarrollo (ANID), s/n Korea Polar Research Institutes (KOPRI)
Agüera,
Parameter Estimations of Dynamic Energy Budget (DEB) Model over the Life History of a Key Antarctic Species: The Antarctic Sea Star Odontaster validus Koehler, 1906.
2015, Pubmed,
Echinobase
Agüera,
Parameter Estimations of Dynamic Energy Budget (DEB) Model over the Life History of a Key Antarctic Species: The Antarctic Sea Star Odontaster validus Koehler, 1906.
2015,
Pubmed
,
Echinobase
Ahn,
Influence of glacial runoff on baseline metal accumulation in the Antarctic limpet Nacella concinna from King George Island.
2004,
Pubmed
BLIGH,
A rapid method of total lipid extraction and purification.
1959,
Pubmed
Bae,
Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica.
2021,
Pubmed
Baum,
Cascading top-down effects of changing oceanic predator abundances.
2009,
Pubmed
Chown,
The changing form of Antarctic biodiversity.
2015,
Pubmed
Clark,
Light-driven tipping points in polar ecosystems.
2013,
Pubmed
Cárdenas,
The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula.
2018,
Pubmed
Fox,
Gradients in Primary Production Predict Trophic Strategies of Mixotrophic Corals across Spatial Scales.
2018,
Pubmed
Holyoak,
Omnivory and the stability of simple food webs.
1998,
Pubmed
Jackson,
Comparing isotopic niche widths among and within communities: SIBER - Stable Isotope Bayesian Ellipses in R.
2011,
Pubmed
Jackson,
Population-level metrics of trophic structure based on stable isotopes and their application to invasion ecology.
2012,
Pubmed
Kim,
Distribution and Control of Bacterial Community Composition in Marian Cove Surface Waters, King George Island, Antarctica during the Summer of 2018.
2020,
Pubmed
Layman,
Can stable isotope ratios provide for community-wide measures of trophic structure?
2007,
Pubmed
Michel,
Increased sea ice cover alters food web structure in East Antarctica.
2019,
Pubmed
Núñez-Pons,
Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star.
2018,
Pubmed
,
Echinobase
Parnell,
Source partitioning using stable isotopes: coping with too much variation.
2010,
Pubmed
Pasotti,
Benthic Trophic Interactions in an Antarctic Shallow Water Ecosystem Affected by Recent Glacier Retreat.
2015,
Pubmed
Rossi,
Antarctic food web architecture under varying dynamics of sea ice cover.
2019,
Pubmed
Rovelli,
Benthic primary production and respiration of shallow rocky habitats: a case study from South Bay (Doumer Island, Western Antarctic Peninsula).
2019,
Pubmed
Sahade,
Climate change and glacier retreat drive shifts in an Antarctic benthic ecosystem.
2015,
Pubmed
Valdivia,
Up, down, and all around: scale-dependent spatial variation in rocky-shore communities of Fildes Peninsula, King George Island, Antarctica.
2014,
Pubmed
Wada,
The use of stable isotopes for food web analysis.
1991,
Pubmed
van den Hoff,
Bottom-up regulation of a pole-ward migratory predator population.
2014,
Pubmed
