کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8849998 | 1618660 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ovarian development and histological observations of threatened dwarf snakehead fish, Channa gachua (Hamilton, 1822)
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
بوم شناسی
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چکیده انگلیسی
Channa gachua were monthly sampled throughout a year and the histological analysis of their ovaries was done to determine the changes occurring in ovarian development. Based on histological examination of the ovaries, the oogenic process of C. gachua undergoes distinct cyclic and seasonal morphological changes. Five different developmental stages were identified under three major categories: pre-spawning (immature, maturing, mature), spawning (ripe-running) and post-spawning (spent). The peak spawning period of C. gachua was noticed during December - February. The gonadosomatic index (GSI) and ova diameter ranged from 0.79 to 3.61% and 543-1123 μm respectively. The highest mean GSI (3.61 ± 0.16) and oocyte diameter (1123 ± 55 μm) were observed in December indicating that during this month the gonadal development reached maturity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Saudi Journal of Biological Sciences - Volume 25, Issue 1, January 2018, Pages 149-153
Journal: Saudi Journal of Biological Sciences - Volume 25, Issue 1, January 2018, Pages 149-153
نویسندگان
James Milton, Ajaz A. Bhat, M.A. Haniffa, Shaik Althaf Hussain, Irfan A. Rather, Khalid Mashay Al-Anazi, Waleed A.Q. Hailan, Mohammad Abul Farah,