A STUDY ON OOGENESIS OF LIZA SALIENS
Author(s):
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.
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
Language:
Persian
Published:
Iranian Scientific Fisheries Journal, Volume:12 Issue: 1, 2003
Page:
131
magiran.com/p734365
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!