Período reprodutivo de fêmeas de Hypostomus commersoni Valenciennes, 1836, em uma barragem na bacia do rio Uruguai
Hypostomus commersoni belongs to the family Loricariidae and is native to the Uruguay River Basin. It is commonly found in lentic environments, and their biology is poorly known in the Pampa regions of Brazil. The reproductive period was determined by analysis of the gonadosomatic index (GSI), hepat...
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| Autores principales: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | portugués |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: | https://dialnet.unirioja.es/servlet/oaiart?codigo=9909317 |
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| Sumario: | Hypostomus commersoni belongs to the family Loricariidae and is native to the Uruguay River Basin. It is commonly found in lentic environments, and their biology is poorly known in the Pampa regions of Brazil. The reproductive period was determined by analysis of the gonadosomatic index (GSI), hepatosomatic index (HSI), and condition factor (∆K), in addition to the macroscopic observation of the gonadal development stage. The results indicated that the species under study had a reproductive period lasting from September to January, with reproduction peaking in November. ΔK and HSI were highest in October, showing respectively a better gonadal condition and an accumulation of lipid reserves to provide energy for vitellogenesis, in the month preceding peak breeding. Thus, ΔK and HSI are good indicators of the reproduction period of H. commersoni. |
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