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dc.contributor.author
Bascur, Miguel  
dc.contributor.author
Morley, Simon A.  
dc.contributor.author
Meredith, Michael  
dc.contributor.author
Muñoz Ramírez, Carlos P.  
dc.contributor.author
Barnes, David K. A.  
dc.contributor.author
Schloss, Irene Ruth  
dc.contributor.author
Sands, Chester J.  
dc.contributor.author
Schofield, Oscar  
dc.contributor.author
Román Gonzaléz, Alejandro  
dc.contributor.author
Cárdenas, Leyla  
dc.contributor.author
Venables, Hugh  
dc.contributor.author
Brante, Antonio  
dc.contributor.author
Urzúa, Ángel  
dc.date.available
2022-01-26T12:36:41Z  
dc.date.issued
2021-12-21  
dc.identifier.citation
Bascur, Miguel; Morley, Simon A.; Meredith, Michael; Muñoz Ramírez, Carlos P.; Barnes, David K. A.; et al.; Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer; PeerJ; PeerJ; 9; 21-12-2021; 1-24  
dc.identifier.issn
2167-8359  
dc.identifier.uri
http://hdl.handle.net/11336/150675  
dc.description.abstract
The Western Antarctic Peninsula (WAP) is a hotspot for environmental change and has a strong environmental gradient from North to South. Here, for the first time we used adult individuals of the bivalve Aequiyoldia eightsii to evaluate large-scale spatial variation in the biochemical composition (measured as lipid, protein and fatty acids) and energy content, as a proxy for nutritional condition, of three populations along the WAP: O'Higgins Research Station in the north (63.3°S), Yelcho Research Station in mid-WAP (64.9°S) and Rothera Research Station further south (67.6°S). The results reveal significantly higher quantities of lipids (L), proteins (P), energy (E) and total fatty acids (FA) in the northern population (O'Higgins) (L: 8.33 ± 1.32%; P: 22.34 ± 3.16%; E: 171.53 ± 17.70 Joules; FA: 16.33 ± 0.98 mg g) than in the mid-WAP population (Yelcho) (L: 6.23 ± 0.84%; P: 18.63 ± 1.17%; E: 136.67 ± 7.08 Joules; FA: 10.93 ± 0.63 mg g) and southern population (Rothera) (L: 4.60 ± 0.51%; P: 13.11 ± 0.98%; E: 98.37 ± 5.67 Joules; FA: 7.58 ± 0.48 mg g). We hypothesize these differences in the nutritional condition could be related to a number of biological and environmental characteristics. Our results can be interpreted as a consequence of differences in phenology at each location; differences in somatic and gametogenic growth rhythms. Contrasting environmental conditions throughout the WAP such as seawater temperature, quantity and quality of food from both planktonic and sediment sources, likely have an effect on the metabolism and nutritional intake of this species.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
PeerJ  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
BIVALVE  
dc.subject
FATTY ACID  
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INFAUNAL  
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INVERTEBRATE  
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PHYSIOLOGY  
dc.subject.classification
Biología Marina, Limnología  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-01-25T14:32:29Z  
dc.journal.volume
9  
dc.journal.pagination
1-24  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Bascur, Miguel. Universidad Catolica de la Santisima Concepcion.; Chile  
dc.description.fil
Fil: Morley, Simon A.. British Antarctic Survey; Reino Unido  
dc.description.fil
Fil: Meredith, Michael. British Antarctic Survey; Reino Unido  
dc.description.fil
Fil: Muñoz Ramírez, Carlos P.. Universidad Catolica de la Santisima Concepcion.; Chile  
dc.description.fil
Fil: Barnes, David K. A.. British Antarctic Survey; Reino Unido  
dc.description.fil
Fil: Schloss, Irene Ruth. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina  
dc.description.fil
Fil: Sands, Chester J.. British Antarctic Survey; Reino Unido  
dc.description.fil
Fil: Schofield, Oscar. Rutgers, The State University Of New Jersey; Estados Unidos  
dc.description.fil
Fil: Román Gonzaléz, Alejandro. University of Exeter; Reino Unido  
dc.description.fil
Fil: Cárdenas, Leyla. Universidad Pedro de Valdivia; Chile  
dc.description.fil
Fil: Venables, Hugh. British Antarctic Survey; Reino Unido  
dc.description.fil
Fil: Brante, Antonio. Universidad Catolica de la Santisima Concepcion.; Chile  
dc.description.fil
Fil: Urzúa, Ángel. Universidad Catolica de la Santisima Concepcion.; Chile  
dc.journal.title
PeerJ  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://peerj.com/articles/12679  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.7717/peerj.12679