Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain

Detalhes bibliográficos
Autor(a) principal: ALVES,GUSTAVO H. ZAIA
Data de Publicação: 2021
Outros Autores: FIGUEIREDO,BRUNO R.S., MANETTA,GISLAINE I., BENEDITO,EVANILDE
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anais da Academia Brasileira de Ciências (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000701007
Resumo: Abstract Ontogenetic shifts in food preference reduces intraspecific competition as immature individuals eat different food types than adults. This diet plasticity could facilitate species’ ability to successfully invade and establish itself in a new environment, even when co-occurring with phylogenetically close species. Here, ontogenetic diet shifts of a non-native piranha species (Serrasalmus marginatus) was tested by analyzing the relationship between its body length and the carbon and nitrogen stable isotope signatures. Carbon stable isotope was not correlated to fish length, but positive significant correlation between δ15N values and fish length was found for the non-native piranha. Also, immature and adult S. marginatus showed low isotopic niche overlap. The correlation between fish length and δ15N, and the low trophic overlap between immature and adult, indicate that the non-native S. marginatus had ontogenetic shifts in food preference, which may be viewed as an additional mechanism underlying its successful establishment in the upper Paraná River. Our findings indicate that ontogenetic shifts in food preference may be an invasive trait that facilitates the establishment of non-native fish species in tropical aquatic systems.
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spelling Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplaincoexistenceSerrasalmusParaná Riverstable isotopesAbstract Ontogenetic shifts in food preference reduces intraspecific competition as immature individuals eat different food types than adults. This diet plasticity could facilitate species’ ability to successfully invade and establish itself in a new environment, even when co-occurring with phylogenetically close species. Here, ontogenetic diet shifts of a non-native piranha species (Serrasalmus marginatus) was tested by analyzing the relationship between its body length and the carbon and nitrogen stable isotope signatures. Carbon stable isotope was not correlated to fish length, but positive significant correlation between δ15N values and fish length was found for the non-native piranha. Also, immature and adult S. marginatus showed low isotopic niche overlap. The correlation between fish length and δ15N, and the low trophic overlap between immature and adult, indicate that the non-native S. marginatus had ontogenetic shifts in food preference, which may be viewed as an additional mechanism underlying its successful establishment in the upper Paraná River. Our findings indicate that ontogenetic shifts in food preference may be an invasive trait that facilitates the establishment of non-native fish species in tropical aquatic systems.Academia Brasileira de Ciências2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000701007Anais da Academia Brasileira de Ciências v.93 n.4 2021reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765202120190868info:eu-repo/semantics/openAccessALVES,GUSTAVO H. ZAIAFIGUEIREDO,BRUNO R.S.MANETTA,GISLAINE I.BENEDITO,EVANILDEeng2021-10-05T00:00:00Zoai:scielo:S0001-37652021000701007Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2021-10-05T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain
title Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain
spellingShingle Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain
ALVES,GUSTAVO H. ZAIA
coexistence
Serrasalmus
Paraná River
stable isotopes
title_short Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain
title_full Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain
title_fullStr Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain
title_full_unstemmed Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain
title_sort Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain
author ALVES,GUSTAVO H. ZAIA
author_facet ALVES,GUSTAVO H. ZAIA
FIGUEIREDO,BRUNO R.S.
MANETTA,GISLAINE I.
BENEDITO,EVANILDE
author_role author
author2 FIGUEIREDO,BRUNO R.S.
MANETTA,GISLAINE I.
BENEDITO,EVANILDE
author2_role author
author
author
dc.contributor.author.fl_str_mv ALVES,GUSTAVO H. ZAIA
FIGUEIREDO,BRUNO R.S.
MANETTA,GISLAINE I.
BENEDITO,EVANILDE
dc.subject.por.fl_str_mv coexistence
Serrasalmus
Paraná River
stable isotopes
topic coexistence
Serrasalmus
Paraná River
stable isotopes
description Abstract Ontogenetic shifts in food preference reduces intraspecific competition as immature individuals eat different food types than adults. This diet plasticity could facilitate species’ ability to successfully invade and establish itself in a new environment, even when co-occurring with phylogenetically close species. Here, ontogenetic diet shifts of a non-native piranha species (Serrasalmus marginatus) was tested by analyzing the relationship between its body length and the carbon and nitrogen stable isotope signatures. Carbon stable isotope was not correlated to fish length, but positive significant correlation between δ15N values and fish length was found for the non-native piranha. Also, immature and adult S. marginatus showed low isotopic niche overlap. The correlation between fish length and δ15N, and the low trophic overlap between immature and adult, indicate that the non-native S. marginatus had ontogenetic shifts in food preference, which may be viewed as an additional mechanism underlying its successful establishment in the upper Paraná River. Our findings indicate that ontogenetic shifts in food preference may be an invasive trait that facilitates the establishment of non-native fish species in tropical aquatic systems.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000701007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000701007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0001-3765202120190868
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv Anais da Academia Brasileira de Ciências v.93 n.4 2021
reponame:Anais da Academia Brasileira de Ciências (Online)
instname:Academia Brasileira de Ciências (ABC)
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instname_str Academia Brasileira de Ciências (ABC)
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reponame_str Anais da Academia Brasileira de Ciências (Online)
collection Anais da Academia Brasileira de Ciências (Online)
repository.name.fl_str_mv Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)
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