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dc.contributor.authorTrujillo, Laida Ramos
dc.contributor.authorPrimavera, Jurgenne
dc.contributor.editorMaclean, Jay L.
dc.contributor.editorDizon, Leticia B.
dc.contributor.editorHosillos, Lucila V.
dc.description.abstractWild Penaeus notialis and P. schmitti were induced to mature by unilateral eyestalk ablation of females in 0.5, 1.6 and 2.0-m super(3) tanks stocked at 9-12 shrimps/m super(3). A total of 71 spawns was obtained from 80 P. notialis) females in 2 experiments and 29 spawns from 72 P. schmitti females in 3 experiments over 16-19 days per experiment. Average fecundity and hatch rate were 44,410-64,997 eggs/spawn and 0-71.70% for P. notialis and 41,672-48,083 eggs/spawn and 0-0.17% for P. schmitti , respectively. The low hatch rates throughout the experiment period for P. schmitti , an open thelycum species, and towards the second week for the closed thelycum P. notialis , indicate a failure of spermatophore transfer in the maturation tanks. This lack of copulation may be traced to the high stocking densities and the small sizes of the tanks. Attempts to artificially transfer spermatophores to mature P. schmitti females were generally unsuccessful.en
dc.publisherAsian Fisheries Societyen
dc.relation.ispartofIn: Maclean, J.L., Dizon, L.B., Hosillos, L.V. (eds.). The First Asian Fisheries Forum. Proceedings of the First Asian Fisheries Forum, 26-31 May 1986, Manila, Philippines. Manila, Philippines: Asian Fisheries Society. pp. 697-700en
dc.subjectPenaeus notialisen
dc.subjectPenaeus schmittien
dc.subject.lccVF SP 70
dc.titleInduced maturation in ablated Penaeus notialis and Penaeus schmittien
dc.typeConference paperen
dc.citation.conferenceTitleThe First Asian Fisheries Forum. Proceedings of the First Asian Fisheries Forum, 26-31 May 1986, Manila, Philippinesen
dc.subject.asfaInduced breedingen
dc.subject.asfaShrimp cultureen
dc.subject.asfaEyestalk extirpationen

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