The fecundity of tilapia nilotica breeders in 1cmx3x3m x 1m Blue fine mesh hapa nets in freshwater Grow out pond of Lupon School of Fisheries, Lupon, Davao Oriental.
Researchers:
Edgardo H. Lasangre Sr.
Naida G. Lasangre
Abstract
Tilapia production from aquaculture worldwide has grown rapidly. This growth has been facilitated in past through improvements in tilapia fry and fingerling production. Technology Mass production of tilapia fingerlings requires the successful implementation of a number of activities. The first step is the procurement of adequate numbers of good quality brood fish known lineage necessary to produce the number of eggs needed to give the desired number of advance fingerlings for stocking into growth unit. Good management practices are required to maintain the brood fish population in good physical genetic condition. The management practices involve maintenance of brood fish in earthen ponds.
Spawning can be natural or artificial which involves the manual collection of eggs and milt from the broodfish. They spawned in a variety of containers and the egg and the sac fry may or may not be removed from brooding females. Tilapia can attain sexual maturity and spawn at ages of three to six months and at size 20 grams. Female tilapia is capable of spawning every 4 to 6 weeks under ideal condition in their environment. Hapas that range in size from 2 to 100 sq m are used for tilapia seed production. These are constructed from the fine mesh netting usually 1.6 mm mesh size that retains both eggs and newly released fry.