Ovarian organization and maturity stages of armored catfish Hypostomus strigaticeps (Siluriformes, Loriicaridae)
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This work studied the ovarian development of the armored catfish Hypostomus strigaticeps. Between July 2002 and June 2005, 332 females were collected monthly from the Corumbataí River, São Paulo State - Brazil. The ovaries were processed using routine histological techniques - paraffin inclusion and 5 μm thick sections stained in hematoxylin-eosin. Six types of oocytes were observed: Chromatin-nucleolus, Perinucleolar, Cortical-alveolus, Vitellogenic, Ripe and Atresic. Four maturity stages were created based on macroscopic and microscopic morphological observations, as well as on analysis of the gonadossomatic index (GSI): Rest, Maturation, Ripe and Spawned.
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Fish, Gonad, Histology, Reproduction
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Português
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Acta Scientiarum - Biological Sciences, v. 30, n. 1, p. 107-112, 2008.
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