We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Embryonic and larval development of critically endangered riverine catfish Rita rita.
- Authors
Mollah, Muhammad Fazlul Awal; Taslima, Khanam; Rashid, Harunur; Hossain, Zakir; Sarowar, Muhammad Nasif; Khan, Muhammad Rakibul Kabir
- Abstract
The present study was carried out to investigate the embryonic and larval development of freshwater catfish Rita rita. The mature eggs and sperms were collected by using artificial insemination technique and fertilized eggs were incubated in mini circular hatchery with provision of continuous water supply. The fertilized eggs were transparent, demarsal, spherical, non-adhesive and brownish in colour with a diameter ranging between 1.3 to 1.6 mm. First cleavage occurred within 25-30 min post-fertilization at temperature of 28±1°C. Hatching started 22 h post-fertilization and completed within 24 h at the same temperature range. Newly hatched larvae were 2.0 mm in length devoid of mouth and pigmentation and started feeding within 48-60 h post-hatching. To date, this is the first time the early embryonic and larval development of freshwater catfish R. rita is described. Thus the findings of the present study provide valuable information that may help establishing the large scale seed production technique of Rita.
- Subjects
CATFISH fisheries; EMBRYOLOGY; CAPTIVE wild animal artificial insemination; ARTIFICIAL spawning of fishes; FERTILIZATION (Biology); EGG incubation
- Publication
EurAsian Journal of Biosciences, 2011, Vol 5, p110
- ISSN
1307-9867
- Publication type
Article
- DOI
10.5053/ejobios.2011.5.0.13