Title

Indeterminate Growth In Males Of The Sailfin Molly, Poecilia-Latipinna

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Abbreviated Journal Title

Copeia

Keywords

Zoology

Abstract

The axiom that male poeciliid fishes cease growth after becoming sexually mature is often repeated in the literature, but there is little empirical support. I investigated sexual differences in growth rates in newborn and adult Poecilia latipinna under laboratory conditions. In neonates, the sexes grew at approximately equal rates. In adults, females grew 2-3 times faster than males. However, growth rates of mature males were variable during the experiment and in some cases equaled those of females. Small and large mature males grew at approximately equal relative rates in the second and third experimental growth periods, and all males grew significantly during the study. The literature reveals that males of two other poeciliid species, Xiphophorus maculatus and X. variatus, also exhibit indeterminate growth.

Journal Title

Copeia

Issue/Number

2

Publication Date

1-1-1982

Document Type

Article

Language

English

First Page

296

Last Page

304

WOS Identifier

WOS:A1982NS37600007

ISSN

0045-8511

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