Optimisation of hormone dosage for breeding of Bangana Devdevi

Bangana devdevi (Hora) is an indigenous medium-sized and bentho-pelagic minor carp, widely distributed in the Chindwin headwaters of Manipur, Northeast India. Induced breeding of B. devdevi was done using Gonopro-FH in different doses @ 0.4ml, 0.5ml and 0.6ml/kg body weight in a set of three experimental groups T1, T2 and T3, respectively. All the males were given half the doses of females. Spawning commenced 6–10 hr after injection and was completed within 4–5 hr. Fertilized eggs were hatched out after 11–16 hr of fertilization at temperatures of 26.4–27.5°C. Statistical analysis was carried out to determine the relation between the hormone dosage with egg output, fertilisation rate and hatching rate. The highest number of fertilisation (94.25%) and hatching rate (89.03%) were found in fish with Gonopro-FH @ 0.5ml/kg body weight female and significantly higher (P<0.05) than T1 and T3. The present study may be beneficial for species conservation and management strategies in rivers and tributaries as well as mass seed production of B.devdevi.