Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)

We investigated the spatial distribution of the abundance, biomass and size of zooplankton (nauplii, calanoids, cyclopoids and appendicularians) in relation to the distribution of first-feeding larvae and eggs of Engraulis anchoita across the frontal system of Peninsula Valdés. Twelve samples of zoo...

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Autores principales:	Martos, Pedro José, Esnal, Graciela Beatriz, Capitanio, Fabiana Lía
Publicado:	2012
Materias:	Appendicularians Copepods North Patagonian frontal system Southwestern Atlantic Ocean Zooplankton-anchovy linkage biomass chlorophyll a egg food availability ichthyoplankton larva prey availability relative abundance spatial distribution spawning survival trophic level zooplankton Atlantic Ocean Atlantic Ocean (Southwest) Patagonia Appendicularia (class) Calanoida Copepoda Cyclopoida Engraulidae Engraulis anchoita Tragelaphus eurycerus
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v76_n1_p39_Spinelli http://hdl.handle.net/20.500.12110/paper_02148358_v76_n1_p39_Spinelli
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_02148358_v76_n1_p39_Spinelli
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spelling	paper:paper_02148358_v76_n1_p39_Spinelli2023-06-08T15:20:57Z Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean) Martos, Pedro José Esnal, Graciela Beatriz Capitanio, Fabiana Lía Appendicularians Copepods North Patagonian frontal system Southwestern Atlantic Ocean Zooplankton-anchovy linkage biomass chlorophyll a egg food availability ichthyoplankton larva prey availability relative abundance spatial distribution spawning survival trophic level zooplankton Atlantic Ocean Atlantic Ocean (Southwest) Patagonia Appendicularia (class) Calanoida Copepoda Cyclopoida Engraulidae Engraulis anchoita Tragelaphus eurycerus We investigated the spatial distribution of the abundance, biomass and size of zooplankton (nauplii, calanoids, cyclopoids and appendicularians) in relation to the distribution of first-feeding larvae and eggs of Engraulis anchoita across the frontal system of Peninsula Valdés. Twelve samples of zooplankton and ichthyoplankton were taken with small Bongo (67 μm) and Pairovet (200 μm) nets during the spring of 2004 along two transects. The total abundance of zooplankton and the chlorophyll a concentration were higher in homogeneous waters, while total biomasses were higher in stratified waters. Temperature was negatively correlated with biological variables and was the main factor affecting the zooplankton distribution. In both transects, abundance peaks of first-feeding larvae were detected at coastal stations along with the smallest fraction of zooplankton (<500 μm), while the largest fraction was dominant at the external stations, coinciding with the highest egg abundance. The physical structure of this front generates different levels of food availability for first-feeding larvae. Calanoids (southern transect) and cyclopoids (northern transect) are predominant followed by nauplii and appendicularians. The biomass of zooplankton preys contributes to the carbon transfer to the upper trophic levels and is probably important for the survival and growth of anchovy larvae in this frontal system. Fil:Martos, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Esnal, G.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Capitanio, F.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v76_n1_p39_Spinelli http://hdl.handle.net/20.500.12110/paper_02148358_v76_n1_p39_Spinelli
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Appendicularians Copepods North Patagonian frontal system Southwestern Atlantic Ocean Zooplankton-anchovy linkage biomass chlorophyll a egg food availability ichthyoplankton larva prey availability relative abundance spatial distribution spawning survival trophic level zooplankton Atlantic Ocean Atlantic Ocean (Southwest) Patagonia Appendicularia (class) Calanoida Copepoda Cyclopoida Engraulidae Engraulis anchoita Tragelaphus eurycerus
spellingShingle	Appendicularians Copepods North Patagonian frontal system Southwestern Atlantic Ocean Zooplankton-anchovy linkage biomass chlorophyll a egg food availability ichthyoplankton larva prey availability relative abundance spatial distribution spawning survival trophic level zooplankton Atlantic Ocean Atlantic Ocean (Southwest) Patagonia Appendicularia (class) Calanoida Copepoda Cyclopoida Engraulidae Engraulis anchoita Tragelaphus eurycerus Martos, Pedro José Esnal, Graciela Beatriz Capitanio, Fabiana Lía Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)
topic_facet	Appendicularians Copepods North Patagonian frontal system Southwestern Atlantic Ocean Zooplankton-anchovy linkage biomass chlorophyll a egg food availability ichthyoplankton larva prey availability relative abundance spatial distribution spawning survival trophic level zooplankton Atlantic Ocean Atlantic Ocean (Southwest) Patagonia Appendicularia (class) Calanoida Copepoda Cyclopoida Engraulidae Engraulis anchoita Tragelaphus eurycerus
description	We investigated the spatial distribution of the abundance, biomass and size of zooplankton (nauplii, calanoids, cyclopoids and appendicularians) in relation to the distribution of first-feeding larvae and eggs of Engraulis anchoita across the frontal system of Peninsula Valdés. Twelve samples of zooplankton and ichthyoplankton were taken with small Bongo (67 μm) and Pairovet (200 μm) nets during the spring of 2004 along two transects. The total abundance of zooplankton and the chlorophyll a concentration were higher in homogeneous waters, while total biomasses were higher in stratified waters. Temperature was negatively correlated with biological variables and was the main factor affecting the zooplankton distribution. In both transects, abundance peaks of first-feeding larvae were detected at coastal stations along with the smallest fraction of zooplankton (<500 μm), while the largest fraction was dominant at the external stations, coinciding with the highest egg abundance. The physical structure of this front generates different levels of food availability for first-feeding larvae. Calanoids (southern transect) and cyclopoids (northern transect) are predominant followed by nauplii and appendicularians. The biomass of zooplankton preys contributes to the carbon transfer to the upper trophic levels and is probably important for the survival and growth of anchovy larvae in this frontal system.
author	Martos, Pedro José Esnal, Graciela Beatriz Capitanio, Fabiana Lía
author_facet	Martos, Pedro José Esnal, Graciela Beatriz Capitanio, Fabiana Lía
author_sort	Martos, Pedro José
title	Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)
title_short	Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)
title_full	Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)
title_fullStr	Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)
title_full_unstemmed	Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)
title_sort	potential zooplankton preys (copepoda and appendicularia) for engraulis anchoita in relation to early larval and spawning distributions in the patagonian frontal system (sw atlantic ocean)
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v76_n1_p39_Spinelli http://hdl.handle.net/20.500.12110/paper_02148358_v76_n1_p39_Spinelli
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_version_	1768546112158826496

Potential zooplankton preys (Copepoda and Appendicularia) for Engraulis anchoita in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)

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