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aqua 17(2)_Heterophallus milleri

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Volume 17, Issue 2 – 26 January 2011

Rüdiger Riesch, Timothy J. Colston, Brandon L. Joachim and Ingo Schlupp: Natural history and life history of the Grijalva gambusia Heterophallus milleri Radda, 1987 (Teleostei: Poeciliidae), pp. 95-102

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SINGLE PAPER

Volume 17, Issue 2 – 26 January 2011

Rüdiger Riesch, Timothy J. Colston, Brandon L. Joachim and Ingo Schlupp: Natural history and life history of the Grijalva gambusia Heterophallus milleri Radda, 1987 (Teleostei: Poeciliidae), pp. 95-102

Abstract
We report on basic natural history and life history data of the Grijalva gambusia Heterophallus milleri (Poeciliidae) from a small creek in Tabasco, southern México. Basic biology of H. milleri is similar to that of other members of the tribe Gambusiini. Insects make up at least part of H. milleri’s diet, the tertiary sex ratio was female-skewed, female H. milleri produced small offspring, one clutch at a time, relied predominantly on yolk for embryo provisioning (MI: 0.73), and male size was normally distributed.

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