Artigo

Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, MG, Brazil

The lakes in the middle rio Doce Valley (MG) are suffering impacts due to the introduction of invasive fish species, mainly piscivorous species like red piranha Pygocentrus nattereri and peacock bass Cichla kelberi. Fishes were collected in bimonthly samples conducted at ten lakes along a year. The...

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Autor principal: Giacomini, Henrique Corrêa
Outros Autores: Lima-Junior, D. P., Latini, Anderson Oliveira, Espírito-Santo, Helder Mateus Viana
Grau: Artigo
Idioma: English
Publicado em: Neotropical Ichthyology 2020
Assuntos:
Bairdiella Rhonchus
Cichla
Pisces
Pygocentrus Natterei
Pygocentrus Nattereri
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/14603
id oai:repositorio:1-14603
recordtype dspace
spelling oai:repositorio:1-14603 Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, MG, Brazil Giacomini, Henrique Corrêa Lima-Junior, D. P. Latini, Anderson Oliveira Espírito-Santo, Helder Mateus Viana Bairdiella Rhonchus Cichla Pisces Pygocentrus Natterei Pygocentrus Nattereri The lakes in the middle rio Doce Valley (MG) are suffering impacts due to the introduction of invasive fish species, mainly piscivorous species like red piranha Pygocentrus nattereri and peacock bass Cichla kelberi. Fishes were collected in bimonthly samples conducted at ten lakes along a year. The present study showed that the composition of native fish assemblages is significantly related to the presence and type of non-native species. Fish species distribution among lakes can be explained by differences in species body size: smaller native species are less concentrated in lakes with invasive piscivores, which is in accordance with the hypothesis that they have greater susceptibility to predation by invaders. Another probable cause for this correlation is the proximity of lakes to the drainage system, which could explain both the non-native incidence and the turnover of native species composition. Furthermore, temporal variability in species composition was significantly higher in invaded lakes. This last factor may be linked to seasonal flood pulses, which carry immigrant fishes from streams in the vicinity. The metacommunity framework can bring insights for future studies in such spatially structured systems, and the approach should improve our understanding of processes underlying species composition as well as help direct conservation-focused management plans. Copyright © 2011 Sociedade Brasileira de Ictiologia. 2020-04-24T16:55:13Z 2020-04-24T16:55:13Z 2011 Artigo https://repositorio.inpa.gov.br/handle/1/14603 10.1590/S1679-62252011005000011 en Volume 9, Número 1, Pags. 135-146 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Neotropical Ichthyology
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Bairdiella Rhonchus
Cichla
Pisces
Pygocentrus Natterei
Pygocentrus Nattereri
spellingShingle Bairdiella Rhonchus
Cichla
Pisces
Pygocentrus Natterei
Pygocentrus Nattereri
Giacomini, Henrique Corrêa
Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, MG, Brazil
topic_facet Bairdiella Rhonchus
Cichla
Pisces
Pygocentrus Natterei
Pygocentrus Nattereri
description The lakes in the middle rio Doce Valley (MG) are suffering impacts due to the introduction of invasive fish species, mainly piscivorous species like red piranha Pygocentrus nattereri and peacock bass Cichla kelberi. Fishes were collected in bimonthly samples conducted at ten lakes along a year. The present study showed that the composition of native fish assemblages is significantly related to the presence and type of non-native species. Fish species distribution among lakes can be explained by differences in species body size: smaller native species are less concentrated in lakes with invasive piscivores, which is in accordance with the hypothesis that they have greater susceptibility to predation by invaders. Another probable cause for this correlation is the proximity of lakes to the drainage system, which could explain both the non-native incidence and the turnover of native species composition. Furthermore, temporal variability in species composition was significantly higher in invaded lakes. This last factor may be linked to seasonal flood pulses, which carry immigrant fishes from streams in the vicinity. The metacommunity framework can bring insights for future studies in such spatially structured systems, and the approach should improve our understanding of processes underlying species composition as well as help direct conservation-focused management plans. Copyright © 2011 Sociedade Brasileira de Ictiologia.
format Artigo
author Giacomini, Henrique Corrêa
author2 Lima-Junior, D. P.
Latini, Anderson Oliveira
Espírito-Santo, Helder Mateus Viana
author2Str Lima-Junior, D. P.
Latini, Anderson Oliveira
Espírito-Santo, Helder Mateus Viana
title Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, MG, Brazil
title_short Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, MG, Brazil
title_full Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, MG, Brazil
title_fullStr Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, MG, Brazil
title_full_unstemmed Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, MG, Brazil
title_sort spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio doce valley, mg, brazil
publisher Neotropical Ichthyology
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/14603
_version_ 1787143537840619520
score 11.755432

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