Reproductive Biology of the King Angelfish Holacanthus Passer Valenciennes 1846 in the Gulf of California, Mexico
Abstract:Aspects of the reproductive biology of Holacanthus passer, a valuable ornamental fish, were studied. Male and female specimens were collected monthly from June 1992 to May 1993 in the Gulf of California. The sex ratio differed significantly from 1:1 over the size range of the sample; females prevailed at small lengths and males at larger lengths. The ovarian and testes development was analyzed by histological techniques and the reproductive cycle was determined. H. passer is a partial spawner with asynchronous development of the gonads. The period of reproductive activity was from April to November coinciding with the highest values of gonadosomatic index and temperature. The gonadosomatic index adequately describes the reproductive activity of the species.
Document Type: Research Article
Publication date: November 1, 1999
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