Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern Chile

Along the Humboldt Current System, the anchoveta (Engraulis ringens) is distributed between 4ºS and 42ºS. Environmental conditions differ markedly both between spawning areas and seasonally. Hence, different reproductive tactics are expected in response to the environment. Here we used information f...

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Autores principales:	Claramunt,Gabriel, Castro,Leonardo R, Cubillos,Luis A, Hirche,Hans-Jürgen, Perez,Graciela, Braun,Mauricio
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2012
Materias:	Spawning areas egg production fecundity anchoveta
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572012000200006
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spelling	oai:scielo:S0718-195720120002000062012-11-29Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern ChileClaramunt,GabrielCastro,Leonardo RCubillos,Luis AHirche,Hans-JürgenPerez,GracielaBraun,Mauricio Spawning areas egg production fecundity anchoveta Along the Humboldt Current System, the anchoveta (Engraulis ringens) is distributed between 4ºS and 42ºS. Environmental conditions differ markedly both between spawning areas and seasonally. Hence, different reproductive tactics are expected in response to the environment. Here we used information from Daily Egg Production Method surveys to study latitudinal and interannual variability of the reproductive parameters in stocks of E. ringens from the northern (18° 20' to 26° 00'S) and southern (33° 00 to 41° 30'S) Chilean coast. The main goal was to investigate potential preferences for temperature and chlorophyll concentration in the spawning habitat and changes in the reproductive potential and egg size of anchoveta in response to the prevalent habitat conditions, mainly temperature. Temperature was not a relevant environmental variable to determine geographical position of the spawning areas in E. ringens. High chlorophyll-a concentration appears as the selected variable for spawning habitat. According to our results, the interannual changes in the body weight-fecundity relationship are related to the temperature of the environment, which affects the egg size. We postulate, therefore, that instead of searching for certain temperatures, anchoveta accommodate their offspring characteristics according to the prevalent environment (e.g., egg size, fecundity). The response of the reproductive system to temperature might be in the scale of spawning frequency, i.e., weeks.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.47 n.2 20122012-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572012000200006en10.4067/S0718-19572012000200006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Spawning areas egg production fecundity anchoveta
spellingShingle	Spawning areas egg production fecundity anchoveta Claramunt,Gabriel Castro,Leonardo R Cubillos,Luis A Hirche,Hans-Jürgen Perez,Graciela Braun,Mauricio Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern Chile
description	Along the Humboldt Current System, the anchoveta (Engraulis ringens) is distributed between 4ºS and 42ºS. Environmental conditions differ markedly both between spawning areas and seasonally. Hence, different reproductive tactics are expected in response to the environment. Here we used information from Daily Egg Production Method surveys to study latitudinal and interannual variability of the reproductive parameters in stocks of E. ringens from the northern (18° 20' to 26° 00'S) and southern (33° 00 to 41° 30'S) Chilean coast. The main goal was to investigate potential preferences for temperature and chlorophyll concentration in the spawning habitat and changes in the reproductive potential and egg size of anchoveta in response to the prevalent habitat conditions, mainly temperature. Temperature was not a relevant environmental variable to determine geographical position of the spawning areas in E. ringens. High chlorophyll-a concentration appears as the selected variable for spawning habitat. According to our results, the interannual changes in the body weight-fecundity relationship are related to the temperature of the environment, which affects the egg size. We postulate, therefore, that instead of searching for certain temperatures, anchoveta accommodate their offspring characteristics according to the prevalent environment (e.g., egg size, fecundity). The response of the reproductive system to temperature might be in the scale of spawning frequency, i.e., weeks.
author	Claramunt,Gabriel Castro,Leonardo R Cubillos,Luis A Hirche,Hans-Jürgen Perez,Graciela Braun,Mauricio
author_facet	Claramunt,Gabriel Castro,Leonardo R Cubillos,Luis A Hirche,Hans-Jürgen Perez,Graciela Braun,Mauricio
author_sort	Claramunt,Gabriel
title	Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern Chile
title_short	Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern Chile
title_full	Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern Chile
title_fullStr	Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern Chile
title_full_unstemmed	Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern Chile
title_sort	inter-annual reproductive trait variation and spawning habitat preferences of engraulis ringens off northern chile
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572012000200006
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_version_	1714202317752893440

Inter-annual reproductive trait variation and spawning habitat preferences of Engraulis ringens off northern Chile

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