Effects of a Supraseasonal Drought on the Ecological Attributes of Plagioscion squamosissimus (Heckel, 1840) (Pisces, Sciaenidae) in a Brazilian Reservoir

The aim of this study was to evaluate the effect of a supraseasonal drought on the ecological attributes of Plagioscion squamosissimus. The fish were caught quarterly from February 2010 to November 2014 using gill nets in the reservoir of Santa Cruz, Rio Grande do Norte, Brazil. The abundance of the...

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Autores principales: Souza, Antonia E. F., Oliveira, Jônnata F., Peretti, Danielle, Fernandes, Rodrigo, Costa, Rodrigo S., Novaes, José Luis Costa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5343567/
https://www.ncbi.nlm.nih.gov/pubmed/28326431
http://dx.doi.org/10.1155/2017/5930516
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author Souza, Antonia E. F.
Oliveira, Jônnata F.
Peretti, Danielle
Fernandes, Rodrigo
Costa, Rodrigo S.
Novaes, José Luis Costa
author_facet Souza, Antonia E. F.
Oliveira, Jônnata F.
Peretti, Danielle
Fernandes, Rodrigo
Costa, Rodrigo S.
Novaes, José Luis Costa
author_sort Souza, Antonia E. F.
collection PubMed
description The aim of this study was to evaluate the effect of a supraseasonal drought on the ecological attributes of Plagioscion squamosissimus. The fish were caught quarterly from February 2010 to November 2014 using gill nets in the reservoir of Santa Cruz, Rio Grande do Norte, Brazil. The abundance of the species was evaluated with the catch per unit effort (CPUE) metric and then correlated with the accumulated rainfall and water volume of the reservoir. The diet of the fish was evaluated using the feeding index (IAi). The proportional similarity index (PS(i)) was used to evaluate the variation in the niches of the fish. The body condition was inferred through the relative condition factor, and its variation was assessed with ANOVA. A reduction in the abundance of the species that were positively correlated with the reservoir water volume was observed. The diet of the fish comprised shrimp, gastropods, fish, insects, shrimp larvae, and vegetable matter, with shrimp being the major component. PS(i) showed the occurrence of individual specialization during November 2013 and November 2014. The relative condition factor was not correlated with a reduction in the water volume of the reservoir. The supraseasonal drought did not affect the relative condition factor, diet, and the trophic niche, but it did affect the species abundance.
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spelling pubmed-53435672017-03-21 Effects of a Supraseasonal Drought on the Ecological Attributes of Plagioscion squamosissimus (Heckel, 1840) (Pisces, Sciaenidae) in a Brazilian Reservoir Souza, Antonia E. F. Oliveira, Jônnata F. Peretti, Danielle Fernandes, Rodrigo Costa, Rodrigo S. Novaes, José Luis Costa ScientificWorldJournal Research Article The aim of this study was to evaluate the effect of a supraseasonal drought on the ecological attributes of Plagioscion squamosissimus. The fish were caught quarterly from February 2010 to November 2014 using gill nets in the reservoir of Santa Cruz, Rio Grande do Norte, Brazil. The abundance of the species was evaluated with the catch per unit effort (CPUE) metric and then correlated with the accumulated rainfall and water volume of the reservoir. The diet of the fish was evaluated using the feeding index (IAi). The proportional similarity index (PS(i)) was used to evaluate the variation in the niches of the fish. The body condition was inferred through the relative condition factor, and its variation was assessed with ANOVA. A reduction in the abundance of the species that were positively correlated with the reservoir water volume was observed. The diet of the fish comprised shrimp, gastropods, fish, insects, shrimp larvae, and vegetable matter, with shrimp being the major component. PS(i) showed the occurrence of individual specialization during November 2013 and November 2014. The relative condition factor was not correlated with a reduction in the water volume of the reservoir. The supraseasonal drought did not affect the relative condition factor, diet, and the trophic niche, but it did affect the species abundance. Hindawi Publishing Corporation 2017 2017-02-23 /pmc/articles/PMC5343567/ /pubmed/28326431 http://dx.doi.org/10.1155/2017/5930516 Text en Copyright © 2017 Antonia E. F. Souza et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Souza, Antonia E. F.
Oliveira, Jônnata F.
Peretti, Danielle
Fernandes, Rodrigo
Costa, Rodrigo S.
Novaes, José Luis Costa
Effects of a Supraseasonal Drought on the Ecological Attributes of Plagioscion squamosissimus (Heckel, 1840) (Pisces, Sciaenidae) in a Brazilian Reservoir
title Effects of a Supraseasonal Drought on the Ecological Attributes of Plagioscion squamosissimus (Heckel, 1840) (Pisces, Sciaenidae) in a Brazilian Reservoir
title_full Effects of a Supraseasonal Drought on the Ecological Attributes of Plagioscion squamosissimus (Heckel, 1840) (Pisces, Sciaenidae) in a Brazilian Reservoir
title_fullStr Effects of a Supraseasonal Drought on the Ecological Attributes of Plagioscion squamosissimus (Heckel, 1840) (Pisces, Sciaenidae) in a Brazilian Reservoir
title_full_unstemmed Effects of a Supraseasonal Drought on the Ecological Attributes of Plagioscion squamosissimus (Heckel, 1840) (Pisces, Sciaenidae) in a Brazilian Reservoir
title_short Effects of a Supraseasonal Drought on the Ecological Attributes of Plagioscion squamosissimus (Heckel, 1840) (Pisces, Sciaenidae) in a Brazilian Reservoir
title_sort effects of a supraseasonal drought on the ecological attributes of plagioscion squamosissimus (heckel, 1840) (pisces, sciaenidae) in a brazilian reservoir
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5343567/
https://www.ncbi.nlm.nih.gov/pubmed/28326431
http://dx.doi.org/10.1155/2017/5930516
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