The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle

Understanding the factors and mechanisms that control temporal changes of larval settlement and subsequent recruitment of marine bivalves have strong implications for the management of exploited populations of coastal species and the conservation of benthic communities. Therefore, assessing both org...

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Autores: Solís, Marco Antonio, Ballesteros, Manuel (Ballesteros Vázquez), Riascos, José M.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/144216
Acesso em linha:https://hdl.handle.net/2445/144216
Access Level:acceso abierto
Palavra-chave:Mol·luscs
Pacífic, Oceà
Canvi climàtic
Mollusks
Pacific Ocean
Climatic change
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spelling The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycleSolís, Marco AntonioBallesteros, Manuel (Ballesteros Vázquez)Riascos, José M.Mol·luscsPacífic, OceàCanvi climàticMollusksPacific OceanClimatic changeUnderstanding the factors and mechanisms that control temporal changes of larval settlement and subsequent recruitment of marine bivalves have strong implications for the management of exploited populations of coastal species and the conservation of benthic communities. Therefore, assessing both organismal and environmental drivers of the reproductive function, gamete release and recruitment is important. This is particularly true for highly productive upwelling coastal areas that are heavily affected by shifts in climatic regimes during the El Niño (EN)-La Niña (LN) cycle. We aimed to assess temporal variation in the transition between gamete release, larval settlement and subsequent recruitment of the commercially- important ribbed mussel (Aulacomya atra) at Bahía Independencia (Peru) over 9 years (1996-2004) - a period that covered strong EN and LN episodes. We also evaluate the environmental factors implied in these changes. To achieve this, we monitored monthly changes of the spawning stock biomass (SSB; a proxy of the capacity for propagule production and release), the number of settled postlarvae on artificial collectors, the density of recruits of A. atra and several environmental parameters. Our results showed a persistent trend of decreasing SSB and recruitment density, most likely related to human exploitation that reduced the population density by one order of magnitude. The SSB was a significant predictor of the number of settled postlarvae, regardless of the occurrence of EN or LN episodes. In contrast, the relationship between SSB and the density of recruits was dependent on the occurrence of EN or LN. The SSB and the larval settlement were heavily reduced during the warm EN in 1997-1998, presumably as a typical response of species of Antarctic origin to warmer-nutrient depleted waters and disturbed circulation patterns within the bay that may favor offshore transport of larvae. Despite this, the density of recruits of A. atra was high during EN, presumably as a result of reduced competition for food and reduced predation, which may overcompensate for the mortality of recruits associated with thermal stress.Frontiers Media2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/144216Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3389/fmars.2019.00496Frontiers in Marine Science, 2019, vol. 6, p. 496https://doi.org/10.3389/fmars.2019.00496cc-by (c) Solís, Marco A. et al., 2019http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1442162026-05-27T06:46:51Z
dc.title.none.fl_str_mv The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle
title The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle
spellingShingle The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle
Solís, Marco Antonio
Mol·luscs
Pacífic, Oceà
Canvi climàtic
Mollusks
Pacific Ocean
Climatic change
title_short The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle
title_full The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle
title_fullStr The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle
title_full_unstemmed The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle
title_sort The early life history transitions of the bivalve aulacomya atra from the humboldt current system off peru are affected by human exploitation and modulated by El niño-la niña cycle
dc.creator.none.fl_str_mv Solís, Marco Antonio
Ballesteros, Manuel (Ballesteros Vázquez)
Riascos, José M.
author Solís, Marco Antonio
author_facet Solís, Marco Antonio
Ballesteros, Manuel (Ballesteros Vázquez)
Riascos, José M.
author_role author
author2 Ballesteros, Manuel (Ballesteros Vázquez)
Riascos, José M.
author2_role author
author
dc.subject.none.fl_str_mv Mol·luscs
Pacífic, Oceà
Canvi climàtic
Mollusks
Pacific Ocean
Climatic change
topic Mol·luscs
Pacífic, Oceà
Canvi climàtic
Mollusks
Pacific Ocean
Climatic change
description Understanding the factors and mechanisms that control temporal changes of larval settlement and subsequent recruitment of marine bivalves have strong implications for the management of exploited populations of coastal species and the conservation of benthic communities. Therefore, assessing both organismal and environmental drivers of the reproductive function, gamete release and recruitment is important. This is particularly true for highly productive upwelling coastal areas that are heavily affected by shifts in climatic regimes during the El Niño (EN)-La Niña (LN) cycle. We aimed to assess temporal variation in the transition between gamete release, larval settlement and subsequent recruitment of the commercially- important ribbed mussel (Aulacomya atra) at Bahía Independencia (Peru) over 9 years (1996-2004) - a period that covered strong EN and LN episodes. We also evaluate the environmental factors implied in these changes. To achieve this, we monitored monthly changes of the spawning stock biomass (SSB; a proxy of the capacity for propagule production and release), the number of settled postlarvae on artificial collectors, the density of recruits of A. atra and several environmental parameters. Our results showed a persistent trend of decreasing SSB and recruitment density, most likely related to human exploitation that reduced the population density by one order of magnitude. The SSB was a significant predictor of the number of settled postlarvae, regardless of the occurrence of EN or LN episodes. In contrast, the relationship between SSB and the density of recruits was dependent on the occurrence of EN or LN. The SSB and the larval settlement were heavily reduced during the warm EN in 1997-1998, presumably as a typical response of species of Antarctic origin to warmer-nutrient depleted waters and disturbed circulation patterns within the bay that may favor offshore transport of larvae. Despite this, the density of recruits of A. atra was high during EN, presumably as a result of reduced competition for food and reduced predation, which may overcompensate for the mortality of recruits associated with thermal stress.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/144216
url https://hdl.handle.net/2445/144216
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3389/fmars.2019.00496
Frontiers in Marine Science, 2019, vol. 6, p. 496
https://doi.org/10.3389/fmars.2019.00496
dc.rights.none.fl_str_mv cc-by (c) Solís, Marco A. et al., 2019
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Solís, Marco A. et al., 2019
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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