Open AccessArtificial Spawning of Tilapia Eggs 1
Author(s) -
Myers James M.,
Hershberger William K.
Publication year - 1991
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.1991.tb00719.x
Subject(s) - biology , broodstock , spawn (biology) , fecundity , tilapia , hatching , oreochromis mossambicus , hatchery , human fertilization , fishery , oreochromis , stocking , zoology , juvenile , aquaculture , fish <actinopterygii> , ecology , anatomy , population , demography , sociology
A stripspawning methodology was evaluated for tilapia (oreochromid) species. This technique achieved an average hatching success of 68.6 ± 3.6% ( N = 31). Female fecundity and spawning frequency were dependant on both genetical and husbandry factors. Egg yields for Oreochromis niloticus, O. mossambicus , and O. niloticus ± O. mossambicus hybrids averaged 4.54, 10.86 and 10.36 eggs/g female/spawn, respectively. Female broodstock that were adapted to an intensive spawning regime exhibited a significant increase in fecundity. Additionally, egg survival was not affected by hydration for up to 15 minutes prior to fertilization. Results suggest that the strip spawning of tilapia species may be an efficient method of providing viable gametes for hatchery purposes.