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Maturation and induced spawning of the mangrove red snapper (Lutjanus argentimaculatus) reared in a floating net cage in the Philippines

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Date
1996
Author
Emata, Arnil C.
Page views
3,569
ASFA keyword
cage culture ASFA
fish culture ASFA
floating cages ASFA
induced ovulation ASFA
mariculture ASFA
sexual maturity ASFA
AGROVOC keyword
Philippines AGROVOC
Lutjanus argentimaculatus AGROVOC
Taxonomic term
Lutjanus argentimaculatus GBIF
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Abstract
Wild-caught mangrove red snapper (Lutjanus argentimaculatus) were reared in a floating net cage at SEAFDEC/AQD's Igang Marine Substation at Guimaras Island, Central Philippines. In 1993, monthly samplings and induced spawning trials were conducted as part of a project on seed production. Gonadal development began in February for males and April for females, reached a peak in September and declined in December. Males and females had ripe gonads for up to 5-6 consecutive months. Spawning occurred in the evening (2000 to 2300 hours), 32-36 hours after a single intramuscular injection of 1,500 IU human chorionic gonadotropin kg-1 body weight (BW). About 0.53-2.14 million eggs were collected per female (2.5-4.4 kg BW) with fertilization rates of 21-97% and hatching rates of 42-80% resulting in 30-85% normal larvae (straight and without deformities). The results strongly suggest the feasibility of breeding mangrove red snapper in floating net cages.
URI
http://hdl.handle.net/10862/405
Suggested Citation
Emata, A. C. (1996). Maturation and induced spawning of the mangrove red snapper (Lutjanus argentimaculatus) reared in a floating net cage in the Philippines. In F. Arrenguin-Sanchez, J. L. Munro, M. C. Balgos, & D. Pauly (Eds.), Biology, Fisheries and Culture of Tropical Groupers and Snappers (pp. 378–384). Makati City, Philippines: International Center for Living Aquatic Resources Management.
Type
Conference paper
ISSN
0115-4435
ISBN
9718709622
Collections
  • Conference Proceedings [298]

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