Ovarian development and histological observations of threatened dwarf snakehead fish, Channa gachua (Hamilton, 1822).

Autor: Milton J; Centre for Aquaculture Research and Extension (CARE), St. Xavier's College (Autonomous), Palayamkottai 627002, Tamil Nadu, India., Bhat AA; Centre for Aquaculture Research and Extension (CARE), St. Xavier's College (Autonomous), Palayamkottai 627002, Tamil Nadu, India., Haniffa MA; Centre for Aquaculture Research and Extension (CARE), St. Xavier's College (Autonomous), Palayamkottai 627002, Tamil Nadu, India., Hussain SA; Central Laboratory, Zoology Department, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia., Rather IA; Department of Applied Microbiology and Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, South Korea., Al-Anazi KM; Zoology Department, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia., Hailan WAQ; Zoology Department, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia., Abul Farah M; Zoology Department, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia.
Jazyk: angličtina
Zdroj: Saudi journal of biological sciences [Saudi J Biol Sci] 2018 Jan; Vol. 25 (1), pp. 149-153. Date of Electronic Publication: 2017 Mar 16.
DOI: 10.1016/j.sjbs.2017.03.011
Abstrakt: 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.
Databáze: MEDLINE
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