Title
External Morphology of the Chorion of the Annual Fishes Cynolebias (Cyprinodontiformes: Rivulidae)
DOI
10.2307/1447669
Abstract
Members of the family Rivulidae (killifishes) inhabit temporary bodies of freshwater in South and Central America (one species is also found in North America). The most remarkable characteristic of the family Rivulidae is that species have an annual life cycle with a drought-resistant egg during the dry season. Parenti's (1981) analysis of the order Cyprinodontiformes considered a single genus, Cynolebias, whereas Cos- ta's (1990) phylogenetic analysis of the family Rivulidae separates Cynolebias from Cynopoecilus. One of Costa's synapomorphies to separate Cynopoecilus is the unique structure of their egg's chorion, which is shared with Leptolebias and Campellolebias.
Document Type
Article
Publication Date
12-27-1996
Recommended Citation
Loureiro, M. and R. O. de Sá. 1996. The external morphology of the chorion of the annual fishes Cynolebias (Cyprinodontiformes: Rivulidae). Copeia 4:1016-1022.
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