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- Title
INDUCED BREEDING AND EMBRYONIC DEVELOPMENT OF ROSY BARB, PUNTIUS CONCHONIUS (HAMILTON, 1822) USING SYNTHETIC HORMONES UNDER CAPTIVE CONDITION.
- Authors
Bhosale, Mangesh M.; Suryawanshi, U. A.; Somashekar, S. R.; Pai, Manjulesh
- Abstract
Puntius conchonius is a potential candidate species in aquariculture. Recently, catch of this species has been declined due to overfishing and various ecological changes. The present experiment was conducted to breed Rosy barb, Puntius conchonius (Hamilton, 1822) in captivity through intra-peritonial administration of GnRH based gonadotropic signaling molecular analogues WOVA-FH and ovatide. Spawning success rate varied with the hormone and rate of inducement. Ovatide at a dose of 0.3 mL kg–1 for female and 0.1 mL kg–1 for male was found effective and resulted 500-600 egg production with 76.0±5.12% fertilization and 82.25±1.49% hatching. Dose of hormone apparently affected the latency period (6-8hrs), egg output (300-600), fertilization (43-79%) and hatching rate (68-84%). Administering an over-dose of the inducing agents showed abnormal behaviour while under-dosing caused no inducement in animals. Again the results verified that morula, blastula, gastrula, bud formation and hatching of these species ended at 1:45-, 2:45-, 5:30-, 11:00- and 26:00 hrs post-spawning, respectively. The protocol and chronological development data will be helpful in development of aquariculture by small breeders and conservation of the species.
- Subjects
EMBRYOLOGY; BREEDING; GASTRULATION; WILDLIFE conservation; AGRICULTURAL egg production; SPAWNING
- Publication
Journal of Experimental Zoology India, 2020, Vol 23, Issue 2, p1645
- ISSN
0972-0030
- Publication type
Article