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Revision of the Genus Gonorynchus Scopoli, 1777 (Teleostei: Ostariophysi)

1999; American Society of Ichthyologists and Herpetologists; Volume: 1999; Issue: 2 Linguagem: Inglês

10.2307/1447492

1938-5110

Terry Grande,

Ichthyology and Marine Biology

Five valid species of Gonorynchus (Ostariophysi: Gonorynchiformes: Gonorynchidae) are diagnosed on the basis of internal and external morphology (e.g., vertebrae number, lateral line scale counts, mouth morphology, caudal skeleton morphology). These are Gonorynchus gonorynchus, G. greyi, G. forsteri, G. abbreviatus, and G. moseleyi. A phylogenetic analysis of these species using the outgroups Chanos chanos (a basal gonorynchiform) and tNotogoneus osculus (representing the sister group to Gonorynchus) suggests that G. abbreviatus and G. moseleyi form a monophyletic clade, which is, in turn, the sister group to a clade containing G. greyi, G. gonorynchus, and G. forsteri. Gonorynchus gonorynchus and G. forsteri are sister taxa. This analysis represents the first published phylogenetic analysis of the species of Gonorynchus. A key to the valid species of Gonorynchus is also provided.