ASPECTS OF THE CYTOSYSTEMATICS OF CARDINALFISHES (PERCIFORMES: APOGONIDAE) (KARYOTYPES, ICHTHYOLOGY, CYTOGENETICS, SYSTEMATICS, EVOLUTION)

KENNETH ALAN RIVLIN, Fordham University

Abstract

This study presents the karyotypes of 13 species of cardinalfishes and demonstrates the efficacy of using cytogenetics as an appropriate tool for generating cladograms of phylogenetic relationships. It was found especially useful in gaining insight into the relationships among cardinalfishes at the supraspecific, interspecific and intraspecific levels. In particular, it proved useful in reevaluating the present provisional classification of the family and pointed toward a needed revision of some of the genera which were based on osteological and swimbladder characteristics. The chromosome characters were also useful in partially resolving the species interrelationships within the genus Apogon. Further, it was found that many of the cardinalfishes showed intraspecifc variation in chromosome number and type, as well as clear indications of naturally occurring hybrids among the various chromosomal morphs within the population. Also indicated was the presence of clearly designated sex chromosomes. These data have bearing on the recognition of unit stock, as well as having phylogenetic and biogeographic significance. ^

Subject Area

Biology

Recommended Citation

RIVLIN, KENNETH ALAN, "ASPECTS OF THE CYTOSYSTEMATICS OF CARDINALFISHES (PERCIFORMES: APOGONIDAE) (KARYOTYPES, ICHTHYOLOGY, CYTOGENETICS, SYSTEMATICS, EVOLUTION)" (1985). ETD Collection for Fordham University. AAI8521414.
http://fordham.bepress.com/dissertations/AAI8521414

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