Seasonal patterns of Patagonian sprat Sprattus fuegensis early life stages in an open sea Sub-Antarctic Marine Protected Area
The Patagonian sprat Sprattus fuegensis is a species of ecological importance in the Southwest Atlantic Ocean. However, information regarding S. fuegensis in the Namuncurá Marine Protected Area–Burdwood Bank (NMPA–BB), an open sea Sub-Antarctic Marine Protected Area located in the Argentinian shelf,...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v41_n11_p2167_GarciaAlonso http://hdl.handle.net/20.500.12110/paper_07224060_v41_n11_p2167_GarciaAlonso |
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paper:paper_07224060_v41_n11_p2167_GarciaAlonso2023-06-08T15:43:40Z Seasonal patterns of Patagonian sprat Sprattus fuegensis early life stages in an open sea Sub-Antarctic Marine Protected Area Marine Protected Area Namuncurá–Burdwood Bank Otolith microstructure Seasonal patterns Sprattus fuegensis clupeoid growth rate low temperature marine ecosystem microstructure nursery ground open water otolith protected area seasonal variation spawning Argentine Shelf Atlantic Ocean Atlantic Ocean (Southwest) Burdwood Bank Patagonia Sprattus fuegensis Sprattus sprattus The Patagonian sprat Sprattus fuegensis is a species of ecological importance in the Southwest Atlantic Ocean. However, information regarding S. fuegensis in the Namuncurá Marine Protected Area–Burdwood Bank (NMPA–BB), an open sea Sub-Antarctic Marine Protected Area located in the Argentinian shelf, is outdated and fragmented. Understanding the dynamics of species inhabiting the NMPA–BB is relevant to establish future adequate management strategies. We assessed the abundance, size, and development of S. fuegensis early life stages during spring, summer, and autumn in order to evaluate their seasonal patterns. Compared to neighboring areas, S. fuegensis was particularly abundant in the NMPA–BB, which can be considered a major spawning and nursery ground. Within the NMPA–BB, abundances tend to be higher at the center, probably as a result of the marine currents. Eggs were only recorded in spring, while larvae were recorded in all seasons sampled, with maximum abundances occurring during spring. Larger larval sizes and more developed stages occurred in summer and autumn. Analysis of otolith microstructure showed that spawning periods take place between October and March, peaking in November. Slow growth rates (maximum of 0.30 mm day −1 ) and prolonged larval phase would respond to the low temperatures recorded in the NMPA–BB. Additionally, marked monthly differences in otolith growth would suggest a seasonal effect on the developmental patterns of S. fuegensis larvae. Future studies will be necessary to completely understand S. fuegensis development and determine its trophic role in the NMPA–BB. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v41_n11_p2167_GarciaAlonso http://hdl.handle.net/20.500.12110/paper_07224060_v41_n11_p2167_GarciaAlonso |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Marine Protected Area Namuncurá–Burdwood Bank Otolith microstructure Seasonal patterns Sprattus fuegensis clupeoid growth rate low temperature marine ecosystem microstructure nursery ground open water otolith protected area seasonal variation spawning Argentine Shelf Atlantic Ocean Atlantic Ocean (Southwest) Burdwood Bank Patagonia Sprattus fuegensis Sprattus sprattus |
| spellingShingle |
Marine Protected Area Namuncurá–Burdwood Bank Otolith microstructure Seasonal patterns Sprattus fuegensis clupeoid growth rate low temperature marine ecosystem microstructure nursery ground open water otolith protected area seasonal variation spawning Argentine Shelf Atlantic Ocean Atlantic Ocean (Southwest) Burdwood Bank Patagonia Sprattus fuegensis Sprattus sprattus Seasonal patterns of Patagonian sprat Sprattus fuegensis early life stages in an open sea Sub-Antarctic Marine Protected Area |
| topic_facet |
Marine Protected Area Namuncurá–Burdwood Bank Otolith microstructure Seasonal patterns Sprattus fuegensis clupeoid growth rate low temperature marine ecosystem microstructure nursery ground open water otolith protected area seasonal variation spawning Argentine Shelf Atlantic Ocean Atlantic Ocean (Southwest) Burdwood Bank Patagonia Sprattus fuegensis Sprattus sprattus |
| description |
The Patagonian sprat Sprattus fuegensis is a species of ecological importance in the Southwest Atlantic Ocean. However, information regarding S. fuegensis in the Namuncurá Marine Protected Area–Burdwood Bank (NMPA–BB), an open sea Sub-Antarctic Marine Protected Area located in the Argentinian shelf, is outdated and fragmented. Understanding the dynamics of species inhabiting the NMPA–BB is relevant to establish future adequate management strategies. We assessed the abundance, size, and development of S. fuegensis early life stages during spring, summer, and autumn in order to evaluate their seasonal patterns. Compared to neighboring areas, S. fuegensis was particularly abundant in the NMPA–BB, which can be considered a major spawning and nursery ground. Within the NMPA–BB, abundances tend to be higher at the center, probably as a result of the marine currents. Eggs were only recorded in spring, while larvae were recorded in all seasons sampled, with maximum abundances occurring during spring. Larger larval sizes and more developed stages occurred in summer and autumn. Analysis of otolith microstructure showed that spawning periods take place between October and March, peaking in November. Slow growth rates (maximum of 0.30 mm day −1 ) and prolonged larval phase would respond to the low temperatures recorded in the NMPA–BB. Additionally, marked monthly differences in otolith growth would suggest a seasonal effect on the developmental patterns of S. fuegensis larvae. Future studies will be necessary to completely understand S. fuegensis development and determine its trophic role in the NMPA–BB. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. |
| title |
Seasonal patterns of Patagonian sprat Sprattus fuegensis early life stages in an open sea Sub-Antarctic Marine Protected Area |
| title_short |
Seasonal patterns of Patagonian sprat Sprattus fuegensis early life stages in an open sea Sub-Antarctic Marine Protected Area |
| title_full |
Seasonal patterns of Patagonian sprat Sprattus fuegensis early life stages in an open sea Sub-Antarctic Marine Protected Area |
| title_fullStr |
Seasonal patterns of Patagonian sprat Sprattus fuegensis early life stages in an open sea Sub-Antarctic Marine Protected Area |
| title_full_unstemmed |
Seasonal patterns of Patagonian sprat Sprattus fuegensis early life stages in an open sea Sub-Antarctic Marine Protected Area |
| title_sort |
seasonal patterns of patagonian sprat sprattus fuegensis early life stages in an open sea sub-antarctic marine protected area |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v41_n11_p2167_GarciaAlonso http://hdl.handle.net/20.500.12110/paper_07224060_v41_n11_p2167_GarciaAlonso |
| _version_ |
1768544870784303104 |