Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer
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 (me...
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| Format: | Article |
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PeerJ Inc.
2021-12-01
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| Online Access: | https://peerj.com/articles/12679.pdf |
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| author | Miguel Bascur Simon A. Morley Michael P. Meredith Carlos P. Muñoz-Ramírez David K. A. Barnes Irene R. Schloss Chester J. Sands Oscar Schofield Alejandro Román-Gonzaléz Leyla Cárdenas Hugh Venables Antonio Brante Ángel Urzúa |
| author_facet | Miguel Bascur Simon A. Morley Michael P. Meredith Carlos P. Muñoz-Ramírez David K. A. Barnes Irene R. Schloss Chester J. Sands Oscar Schofield Alejandro Román-Gonzaléz Leyla Cárdenas Hugh Venables Antonio Brante Ángel Urzúa |
| author_sort | Miguel Bascur |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T06:25:38Z |
| format | Article |
| id | doaj.art-2ccf6ac6cba641c4a70899ae3e37ee9e |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T06:25:38Z |
| publishDate | 2021-12-01 |
| publisher | PeerJ Inc. |
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| spelling | doaj.art-2ccf6ac6cba641c4a70899ae3e37ee9e2023-12-03T11:20:48ZengPeerJ Inc.PeerJ2167-83592021-12-019e1267910.7717/peerj.12679Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summerMiguel Bascur0Simon A. Morley1Michael P. Meredith2Carlos P. Muñoz-Ramírez3David K. A. Barnes4Irene R. Schloss5Chester J. Sands6Oscar Schofield7Alejandro Román-Gonzaléz8Leyla Cárdenas9Hugh Venables10Antonio Brante11Ángel Urzúa12Departamento de Ecología, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Concepción, ChileBritish Antarctic Survey, Natural Environment Research Council, Cambridge, United KingdomBritish Antarctic Survey, Natural Environment Research Council, Cambridge, United KingdomInstituto de Entomología, Universidad Metropolitana de Ciencias de la Educación, Santiago, ChileBritish Antarctic Survey, Natural Environment Research Council, Cambridge, United KingdomInstituto Antártico Argentino, Buenos Aires, ArgentinaBritish Antarctic Survey, Natural Environment Research Council, Cambridge, United KingdomCenter for Ocean Observing Leadership, Department of Marine and Coastal Sciences, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, United StatesCollege of Life and Environmental Sciences, University of Exeter, Cornwall, United KingdomCentro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, ChileBritish Antarctic Survey, Natural Environment Research Council, Cambridge, United KingdomDepartamento de Ecología, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Concepción, ChileDepartamento de Ecología, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Concepción, ChileThe 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.https://peerj.com/articles/12679.pdfBivalveInfaunalInvertebrateFatty acidPhysiology |
| spellingShingle | Miguel Bascur Simon A. Morley Michael P. Meredith Carlos P. Muñoz-Ramírez David K. A. Barnes Irene R. Schloss Chester J. Sands Oscar Schofield Alejandro Román-Gonzaléz Leyla Cárdenas Hugh Venables Antonio Brante Ángel Urzúa Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer PeerJ Bivalve Infaunal Invertebrate Fatty acid Physiology |
| title | Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer |
| title_full | Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer |
| title_fullStr | Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer |
| title_full_unstemmed | Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer |
| title_short | Interpopulational differences in the nutritional condition of Aequiyoldia eightsii (Protobranchia: Nuculanidae) from the Western Antarctic Peninsula during austral summer |
| title_sort | interpopulational differences in the nutritional condition of aequiyoldia eightsii protobranchia nuculanidae from the western antarctic peninsula during austral summer |
| topic | Bivalve Infaunal Invertebrate Fatty acid Physiology |
| url | https://peerj.com/articles/12679.pdf |
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