Open AccessReproductive Parameters and Larval Growth of Bighead Catfish (Clarias microcephalus Günther, 1864) from Wild and Cultured Broodstock Strains
Author(s) -
Trần Quốc Cường,
Dương Thúy Yên
Publication year - 2021
Publication title -
agricultural sciences
Language(s) - English
Resource type - Journals
ISSN - 2588-1299
DOI - 10.31817/vjas.2021.4.4.02
Subject(s) - broodstock , biology , hatching , catfish , fecundity , zoology , population , larva , aquaculture , fishery , botany , fish <actinopterygii> , demography , sociology
Bighead catfish, Clarias macrocephalus, is an important species for aquaculture. Nevertheless, information on population variation in their reproductive characteristics and larval growth is limited. This research aimed to evaluate the reproductive performance and larval growth of three bighead catfish broodstock strains collected in Ca Mau (CM) and Hau Giang (HG) provinces (wild strains), and Can Tho (CT, domesticated strain) in the Mekong Delta, Vietnam. The three groups of fish were cultured under optimal maturation conditions in a recirculating system for three months. Then, 16-18 pairs from each broodstock source were artificially propagated. Relative fecundity differed among the sources, from 48,600 (CM) to 69,300 (CT) eggs/kg female (P 0.05).