Abstract:
Muricid snail Chicoreus capucinus (Lamark, 1822) were collected from Klong Bang Prong, Chon Buri Province, from March 2003 to march 2004, and examined using histological analysis through a paraffin technique in conjunction with hematoxyhin and eosin staining for the study of gametogenesis, gonadal development and the spawning cycle. Muricid snail Chicoreus capucinus (Lamark, 1822) used in this study had an average maximum shell length of 41.80+4.18 mm (N=1432). Sex ratios between males and females were 1.37 : 1 (829 Males and 603 Females). Oogenesis was divided into six stages : oogonium, and oocytes stage 1-4, primary young oocyte, secondary young oocyte, previtellogenic oocyte, vitellogenic oocyte and mature oocyte, whereas spermatogenesis was divided into four stages, spermatogonium, spermatocyte, spermatid and spermatozoa. The gonadal development cycle was classified into six stations prefollicular development, initial development, developing, mature, partially spawned and spent. There were spawnings, of males Aprial 2003 To March 2004