Cambios en los indices biológicos de la tararira, <i>Hoplias malabaricus</i> (Bloch, 1794) en un ciclo anual en la laguna Yalca, provincia de Buenos Aires, Argentina

The tararira is a top predator of paramount importance in Pampean lakes. The goal of this study is to assess the change of different biological indices of this species in Yalca Lake on a yearly basis. Also we attempt to determine the relationship between within indices variations and with water temp...

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Autores principales: Balboni, Leandro, Colautti, Darío César, Baigún, Claudio Rafael Mariano
Formato: Articulo
Lenguaje:Español
Publicado: 2009
Materias:
Ciencias Naturales
Chascomús (Buenos Aires, Argentina)
Temperatura Ambiental
Hoplias malabaricus
índices biológicos
Luz
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/68059
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-68059
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Naturales
Chascomús (Buenos Aires, Argentina)
Temperatura Ambiental
Hoplias malabaricus
índices biológicos
Luz
spellingShingle Ciencias Naturales
Chascomús (Buenos Aires, Argentina)
Temperatura Ambiental
Hoplias malabaricus
índices biológicos
Luz
Balboni, Leandro
Colautti, Darío César
Baigún, Claudio Rafael Mariano
Cambios en los indices biológicos de la tararira, <i>Hoplias malabaricus</i> (Bloch, 1794) en un ciclo anual en la laguna Yalca, provincia de Buenos Aires, Argentina
topic_facet Ciencias Naturales
Chascomús (Buenos Aires, Argentina)
Temperatura Ambiental
Hoplias malabaricus
índices biológicos
Luz
description The tararira is a top predator of paramount importance in Pampean lakes. The goal of this study is to assess the change of different biological indices of this species in Yalca Lake on a yearly basis. Also we attempt to determine the relationship between within indices variations and with water temperature (WT) and light hours (LH). Monthly captures were performed during 2006/2007 estimating the relative condition factor (Kn), gonadosomatic index (GSI), liposomatic index (LSI), hepatosomatic index (HSI) and somatosomatic index (SSI). The Kn and GSI presented significant temporal differences in both sexes, showing highest values from december to february, coincident with the reproductive cycle. The LSI displayed values close to cero not showing a stable trend, whereas the HSI presented highest and lowest values from may to july and from april to september respectively for both sexes. Finally the SSI exhibited differences between sexes with the maximum values between march and september. Males showed a positive and significant relationship between Kn and WT. In females this pattern was also noted between GSI and LH and between KN vs WT, but was negative between GSI vs SSI and SSI vs LH. We conclude that the use of different biological indices in this species allows following the maturation cycle and their associated metabolic processes being the observed variation patterns related to high seasonally physiological processes.
format Articulo
Articulo
author Balboni, Leandro
Colautti, Darío César
Baigún, Claudio Rafael Mariano
author_facet Balboni, Leandro
Colautti, Darío César
Baigún, Claudio Rafael Mariano
author_sort Balboni, Leandro
title Cambios en los indices biológicos de la tararira, <i>Hoplias malabaricus</i> (Bloch, 1794) en un ciclo anual en la laguna Yalca, provincia de Buenos Aires, Argentina
title_short Cambios en los indices biológicos de la tararira, <i>Hoplias malabaricus</i> (Bloch, 1794) en un ciclo anual en la laguna Yalca, provincia de Buenos Aires, Argentina
title_full Cambios en los indices biológicos de la tararira, <i>Hoplias malabaricus</i> (Bloch, 1794) en un ciclo anual en la laguna Yalca, provincia de Buenos Aires, Argentina
title_fullStr Cambios en los indices biológicos de la tararira, <i>Hoplias malabaricus</i> (Bloch, 1794) en un ciclo anual en la laguna Yalca, provincia de Buenos Aires, Argentina
title_full_unstemmed Cambios en los indices biológicos de la tararira, <i>Hoplias malabaricus</i> (Bloch, 1794) en un ciclo anual en la laguna Yalca, provincia de Buenos Aires, Argentina
title_sort cambios en los indices biológicos de la tararira, <i>hoplias malabaricus</i> (bloch, 1794) en un ciclo anual en la laguna yalca, provincia de buenos aires, argentina
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/68059
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