Reproduction of the fish Poeciliopsis gracilis (Cyprinodontiformes: Poeciliidae) in Coatetelco, a tropical shallow lake in Mexico

Reproduction of the fish Poeciliopsis gracilis (Cyprinodontiformes: Poeciliidae) in Coatetelco, a tropical shallow lake in Mexico

A reproductive analysis of 1 225 specimens of Poeciliopsis gracilis obtained through monthly samples from Coatetelco, a tropical shallow lake in Central Mexico, was made. There was an evident sexual dimorphism, including a difference in body size at the onset of reproduction. Sex ratio deviated sign...

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Veröffentlicht in:Revista de biología tropical 2018-04, p.1801-1812
Hauptverfasser: Gómez-Márquez, José Luis, Peña-Mendoza, Bertha, Salgado-Ugarte, Isaías H., Sánchez-Herrera, Abby K., Sastré-Baez, Leonardo
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container_title Revista de biología tropical
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creator Gómez-Márquez, José Luis
Peña-Mendoza, Bertha
Salgado-Ugarte, Isaías H.
Sánchez-Herrera, Abby K.
Sastré-Baez, Leonardo
description A reproductive analysis of 1 225 specimens of Poeciliopsis gracilis obtained through monthly samples from Coatetelco, a tropical shallow lake in Central Mexico, was made. There was an evident sexual dimorphism, including a difference in body size at the onset of reproduction. Sex ratio deviated significantly from unity. Monthly variations in gonadosomatic (GSI), hepatosomatic (HSI) indexes and ovarian development stages showed that the spawning season was from July to October, coinciding with the rainy season and phytoplankton biomass increase.
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title Reproduction of the fish Poeciliopsis gracilis (Cyprinodontiformes: Poeciliidae) in Coatetelco, a tropical shallow lake in Mexico
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