Trophic plasticity of larval notothenioid fish Harpagifer antarcticus in shallow waters from the South Shetland Islands, Antarctica

Mauricio F. Landaeta, Javier Vera-Duarte, Karen Manríquez, Natalia Marcovich, Laura Latorre-Melín, Valentina López-Berger, Jaime Letelier, Mónica Alvarado-Niño, Italo Masotti, Mario La Mesa

Resultado de la investigación: Article

2 Citas (Scopus)

Resumen

Adaptive plasticity in foraging of early life stages of marine fishes is highly relevant, particularly in environments such as the Antarctic inshore waters. In this study we analyzed the trophic habits, feeding success and selectivity of larval spiny plunderfish Harpagiferantarcticus (Osteichthyes: Harpagiferidae) collected weekly in austral summer 2014 and 2015 at Bahía Chile, Greenwich Island, South Shetland Islands. Based on the stomach contents of 202 individuals ranging between 5.97 and 10.66 mm, the spiny plunderfish was omnivorous, with chain-forming diatom Thalassiosiraminuscula, euphausiid eggs and copepodites as the main prey items. The feeding success, measured as prey number per gut and total volume per gut, and the trophic niche breadth were independent of the standard length. Only the maximum prey size (width) was positively correlated with larval size, suggesting a preference for larger prey as larvae grow. At the interannual scale, significant differences were only detected in the ingested prey per gut, with higher values during summer 2014. In this season, trophic niche breadth increased with larval size. At the weekly scale, and after storm winds from southeast and high turbulence in surface waters, H. antarcticus larvae switched their selective feeding based on large prey (i.e., copepodites) to a more opportunistic feeding strategy, relying on large abundance of small (i.e., T. minuscula) to medium-size prey (euphausiid eggs). The present results suggest that larval spiny plunderfish exhibit feeding behavior plasticity, ensuring higher feeding rates after major changes triggered by meteorological conditions in a shallow embayment of the South Shetland Islands.

Idioma originalEnglish
Páginas (desde-hasta)837-851
Número de páginas15
PublicaciónPolar Biology
Volumen40
N.º4
DOI
EstadoPublished - 1 abr 2017
Publicado de forma externa

Huella dactilar

Islands
fish roe
Antarctica
Fishes
digestive system
Eggs
Larva
Water
niches
fish
Diatoms
feeding methods
Gastrointestinal Contents
Bacillariophyceae
Chile
larvae
summer
Feeding Behavior
marine fish
feeding behavior

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Citar esto

Landaeta, M. F., Vera-Duarte, J., Manríquez, K., Marcovich, N., Latorre-Melín, L., López-Berger, V., ... La Mesa, M. (2017). Trophic plasticity of larval notothenioid fish Harpagifer antarcticus in shallow waters from the South Shetland Islands, Antarctica. Polar Biology, 40(4), 837-851. https://doi.org/10.1007/s00300-016-2009-8
Landaeta, Mauricio F. ; Vera-Duarte, Javier ; Manríquez, Karen ; Marcovich, Natalia ; Latorre-Melín, Laura ; López-Berger, Valentina ; Letelier, Jaime ; Alvarado-Niño, Mónica ; Masotti, Italo ; La Mesa, Mario. / Trophic plasticity of larval notothenioid fish Harpagifer antarcticus in shallow waters from the South Shetland Islands, Antarctica. En: Polar Biology. 2017 ; Vol. 40, N.º 4. pp. 837-851.
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abstract = "Adaptive plasticity in foraging of early life stages of marine fishes is highly relevant, particularly in environments such as the Antarctic inshore waters. In this study we analyzed the trophic habits, feeding success and selectivity of larval spiny plunderfish Harpagiferantarcticus (Osteichthyes: Harpagiferidae) collected weekly in austral summer 2014 and 2015 at Bah{\'i}a Chile, Greenwich Island, South Shetland Islands. Based on the stomach contents of 202 individuals ranging between 5.97 and 10.66 mm, the spiny plunderfish was omnivorous, with chain-forming diatom Thalassiosiraminuscula, euphausiid eggs and copepodites as the main prey items. The feeding success, measured as prey number per gut and total volume per gut, and the trophic niche breadth were independent of the standard length. Only the maximum prey size (width) was positively correlated with larval size, suggesting a preference for larger prey as larvae grow. At the interannual scale, significant differences were only detected in the ingested prey per gut, with higher values during summer 2014. In this season, trophic niche breadth increased with larval size. At the weekly scale, and after storm winds from southeast and high turbulence in surface waters, H. antarcticus larvae switched their selective feeding based on large prey (i.e., copepodites) to a more opportunistic feeding strategy, relying on large abundance of small (i.e., T. minuscula) to medium-size prey (euphausiid eggs). The present results suggest that larval spiny plunderfish exhibit feeding behavior plasticity, ensuring higher feeding rates after major changes triggered by meteorological conditions in a shallow embayment of the South Shetland Islands.",
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Landaeta, MF, Vera-Duarte, J, Manríquez, K, Marcovich, N, Latorre-Melín, L, López-Berger, V, Letelier, J, Alvarado-Niño, M, Masotti, I & La Mesa, M 2017, 'Trophic plasticity of larval notothenioid fish Harpagifer antarcticus in shallow waters from the South Shetland Islands, Antarctica', Polar Biology, vol. 40, n.º 4, pp. 837-851. https://doi.org/10.1007/s00300-016-2009-8

Trophic plasticity of larval notothenioid fish Harpagifer antarcticus in shallow waters from the South Shetland Islands, Antarctica. / Landaeta, Mauricio F.; Vera-Duarte, Javier; Manríquez, Karen; Marcovich, Natalia; Latorre-Melín, Laura; López-Berger, Valentina; Letelier, Jaime; Alvarado-Niño, Mónica; Masotti, Italo; La Mesa, Mario.

En: Polar Biology, Vol. 40, N.º 4, 01.04.2017, p. 837-851.

Resultado de la investigación: Article

TY - JOUR

T1 - Trophic plasticity of larval notothenioid fish Harpagifer antarcticus in shallow waters from the South Shetland Islands, Antarctica

AU - Landaeta, Mauricio F.

AU - Vera-Duarte, Javier

AU - Manríquez, Karen

AU - Marcovich, Natalia

AU - Latorre-Melín, Laura

AU - López-Berger, Valentina

AU - Letelier, Jaime

AU - Alvarado-Niño, Mónica

AU - Masotti, Italo

AU - La Mesa, Mario

PY - 2017/4/1

Y1 - 2017/4/1

N2 - Adaptive plasticity in foraging of early life stages of marine fishes is highly relevant, particularly in environments such as the Antarctic inshore waters. In this study we analyzed the trophic habits, feeding success and selectivity of larval spiny plunderfish Harpagiferantarcticus (Osteichthyes: Harpagiferidae) collected weekly in austral summer 2014 and 2015 at Bahía Chile, Greenwich Island, South Shetland Islands. Based on the stomach contents of 202 individuals ranging between 5.97 and 10.66 mm, the spiny plunderfish was omnivorous, with chain-forming diatom Thalassiosiraminuscula, euphausiid eggs and copepodites as the main prey items. The feeding success, measured as prey number per gut and total volume per gut, and the trophic niche breadth were independent of the standard length. Only the maximum prey size (width) was positively correlated with larval size, suggesting a preference for larger prey as larvae grow. At the interannual scale, significant differences were only detected in the ingested prey per gut, with higher values during summer 2014. In this season, trophic niche breadth increased with larval size. At the weekly scale, and after storm winds from southeast and high turbulence in surface waters, H. antarcticus larvae switched their selective feeding based on large prey (i.e., copepodites) to a more opportunistic feeding strategy, relying on large abundance of small (i.e., T. minuscula) to medium-size prey (euphausiid eggs). The present results suggest that larval spiny plunderfish exhibit feeding behavior plasticity, ensuring higher feeding rates after major changes triggered by meteorological conditions in a shallow embayment of the South Shetland Islands.

AB - Adaptive plasticity in foraging of early life stages of marine fishes is highly relevant, particularly in environments such as the Antarctic inshore waters. In this study we analyzed the trophic habits, feeding success and selectivity of larval spiny plunderfish Harpagiferantarcticus (Osteichthyes: Harpagiferidae) collected weekly in austral summer 2014 and 2015 at Bahía Chile, Greenwich Island, South Shetland Islands. Based on the stomach contents of 202 individuals ranging between 5.97 and 10.66 mm, the spiny plunderfish was omnivorous, with chain-forming diatom Thalassiosiraminuscula, euphausiid eggs and copepodites as the main prey items. The feeding success, measured as prey number per gut and total volume per gut, and the trophic niche breadth were independent of the standard length. Only the maximum prey size (width) was positively correlated with larval size, suggesting a preference for larger prey as larvae grow. At the interannual scale, significant differences were only detected in the ingested prey per gut, with higher values during summer 2014. In this season, trophic niche breadth increased with larval size. At the weekly scale, and after storm winds from southeast and high turbulence in surface waters, H. antarcticus larvae switched their selective feeding based on large prey (i.e., copepodites) to a more opportunistic feeding strategy, relying on large abundance of small (i.e., T. minuscula) to medium-size prey (euphausiid eggs). The present results suggest that larval spiny plunderfish exhibit feeding behavior plasticity, ensuring higher feeding rates after major changes triggered by meteorological conditions in a shallow embayment of the South Shetland Islands.

KW - Antarctica

KW - Feeding

KW - Fish larvae

KW - Greenwich Island

KW - Harpagifer

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U2 - 10.1007/s00300-016-2009-8

DO - 10.1007/s00300-016-2009-8

M3 - Article

AN - SCOPUS:84979266774

VL - 40

SP - 837

EP - 851

JO - Polar Biology

JF - Polar Biology

SN - 0722-4060

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ER -

Landaeta MF, Vera-Duarte J, Manríquez K, Marcovich N, Latorre-Melín L, López-Berger V y otros. Trophic plasticity of larval notothenioid fish Harpagifer antarcticus in shallow waters from the South Shetland Islands, Antarctica. Polar Biology. 2017 abr 1;40(4):837-851. https://doi.org/10.1007/s00300-016-2009-8