In:
Journal of the World Aquaculture Society, Wiley, Vol. 48, No. 6 ( 2017-12), p. 955-962
Abstract:
African carp, Labeo victorianus , is one of the threatened endemic fishes of Lake Victoria which requires conservation and has potential for aquaculture. We conducted a series of experiments on L. victorianus aiming at producing juveniles for both human consumption and stock enhancement. A total of 79 broodstock (mean body weight = 227.06 g) were collected from the wild; packed at 200, 300, and 500 g/L; and transported by road for 7 h. All fish survived during transportation whereas dissolved oxygen decreased and total ammonia nitrogen increased significantly after transport. Females produced 46,702–86,712 eggs (mean = 68,189 ± 2397) and fecundity was highly correlated with the fish body size ( R 2 = 0.96). Only males re‐spawned in captivity while females did not. At 28 C, females spawned 11–12 h after pairing with males. Larvae can either be fed with formulated diet or natural zooplankton. Juveniles (mean length = 36.7 mm; mean body weight = 0.46 g) can be packed as high as 60 fish/L and transported by road for 12 h with low mortality (2.7–10.3%). These results show that captive breeding of L. victorianus can be a good strategy to produce juveniles to boost wild population as well as a source of seeds for culture.
Type of Medium:
Online Resource
ISSN:
0893-8849
,
1749-7345
DOI:
10.1111/jwas.2017.48.issue-6
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2233509-2
SSG:
21,3
