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Osteological examination of Centropristis striata, C. ocyurus and C. philadelphica reveals characters which may be useful in defining the genus. The medially elongate subocular shelf appears unique for the genus among other Serraninae examined. Species may be distinguished on the basis of otoliths, supraoccipital-parietal ridges, shape of vomerine toothpatch and other characters. C. striata shows increased frontal bone ossification (hyperostosis) which is apparently correlated with sex reversal and is a male secondary sex characteristic. C. striata is the most specialized species while C. philadelphica is the least specialized. C. fusculus is retained in the genus until a skeleton is available. Currently Centropristis Cuvier is composed of five western North Atlantic species. Among these the black sea bass, Centropristis striata (Linnaeus) is composed of two subspecific froms: C. s. striata (Linnaeus) which occurs along the Atlantic coast of the United States; and C. s. metana Ginsburg found along northern and eastern coastal areas of the Gulf of Mexico. The species is of considerable economic importance to the state of Florida as it is abundant along Florida's Atlantic and Gulf coasts (Godcharles, 1970). Ecologically, sea basses of the genus Centropristis tend to be inhabitants of low reef areas (i.e., coral and limestone outcroppings, and artificial reefs) which typify much of Florida's continental shelf. The role which sea basses play in this area is apparently that of a euryphagic carnivore (Reid, 1954; Hildebrand and Schroeder, 1928). Indications are that the genus is protogynously hennaphroditic, that is, all individuals develop as functional females and later transform into functional males. Hoff (1970) has initiated studies on artificial spawning and rearing of C. s. metana as the species has a potential to lend itself to mariculture. 23 Because of the economic and ecological importance of the sea basses, a study was undertaken to examine and understand more fully relationships within the genus Centropristis. Centropristis has been placed in the subfamily Serraninae by Jordan and Eigenmann (1890). Except for a study on Paratabrax Girard and its comparison with Centropristis by Smith and Young (1966), no further significant comments, based on data, have been made on its generic affinity with other Serraninae. All currently recognized Serraninae genera are poorly defined. Comparative intragenedc studies have been conducted on a few groups such as Serramts Cuvier (Robins and Starck,1961) andDiptectrum Holbrook (Bartone, 1973). These studies have brought some order to the Serraninae but much work remains to be done. It is felt that osteological studies on other Serraninae genera will eventually permit a more comprehensive evaluation and definition of this subfamily. Considered in the present study are those species also studied by Miller (1959): C. striata striata (Linnaeus), C striata metana Ginsburg, C. ocyurus Q ordan and Evermann) and C. philadetphica (Linnaeus ). C. rufus Cuvier is not 1 Bortone: Osteological Notes on the Genus Centropristis (Pisces: Serranidae Published by The Aquila Digital Community, 1977

Osteological Notes on the Genus Centropristis (Pisces: Serranidae)