A STUDY ON OOGENESIS OF LIZA SALIENS | ||
| مجله علمی شیلات ایران | ||
| Article 8, Volume 12, Issue 1, April 2003, Pages 131-152 PDF (522.52 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/isfj.2003.113610 | ||
| Authors | ||
| M. Yosefian1; Sh. Oryan2; F. Farokhi1; H. Asaeian1 | ||
| 1Sari | ||
| 2tehran | ||
| Abstract | ||
| In this study, gametogenesis of sharp-nose mullet (Liza saliens) was investigated bassed on morphological and histological characteristics. For this purpose, about 150 specimen of this species were collected from beach-seine nets in the southern Caspian Sea and were transferred to the laboratory for futher examinations on gonads. The gonad development was classified to 6 different stages consist of: stage I: The oocytes small, colourless with a big nucleus. stage II: The low increase in size of oocytes; globular yolk of nucleus appearing. stage III: Blood vessels are appearing on the ovary; the oocytes are in the primary vitellogenesis stages; vacules and zona radiata are seen around them. stage IV: The ovules can be easily observed with naked-eyes, vitellogenesis are complete and oocytes are mature. stage V: Oocytes are in maximum growth, nucleus migrating towards animal pole; spawning occures in this stage. stage VI: This stage is after spawning, ovary contains empty follicles. Based on this study, the stage of I to III were observed in August to April; stage of IV in May and June; stage of V in June and July and stage VI in August. | ||
| Keywords | ||
| Growth; OOCYTE; LIZA SALIENS | ||
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