SEAFDECINSTITUTIONAL REPOSITORY
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
    • Bahasa Melayu
    • Burmese
    • Filipino
    • Khmer
    • Lao
    • Tiếng Việt
  • English 
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
    • Bahasa Melayu
    • Burmese
    • Filipino
    • Khmer
    • Lao
    • Tiếng Việt
  • Login
View Item 
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • AQD Journal Articles
  • View Item
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • AQD Journal Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Sensitivity of grouper Epinephelus coioides eggs to handling stress at different stages of embryonic development

Thumbnail
View/Open
Request this document
Date
1998
Author
Caberoy, Nora B.
Quinitio, Gerald F.
Page views
79
Metadata
Show full item record

Share 
 
Abstract
The sensitivity of grouper Epinephelus coioides eggs to handling stress at different stages of embryonic development was investigated. Naturally-spawned grouper eggs in floating net cages were collected and handled at the early cleavage, blastula, gastrula, neurula, and eyed stages. Egg viability, hatching rate and percentage of normal larvae were significantly higher (p<0.05) in eggs collected and stocked at the eyed stage than in all other stages. An increasing sensitivity to handling stress was observed in eggs from early cleavage to gastrula, as manifested by the decreasing percentage of viable eggs, hatched, and normal larvae. Sensitivity to handling stress decreased when development reached the neurula and eyed stages. Hatched larvae from eggs handled during the blastula and gastrula stages had high mortalities during the first 3-24 hours after stocking. The results of this study show that grouper E. coioides eggs are most sensitive to handling stress during the early cleavage to gastrula phases. The results imply that harvesting or collection of grouper eggs is best done after neurulation, when the embryo has already formed optic vesicles (eyed stage), to increase egg viability and the hatching rate. It will also minimize mortalities and the occurence of abnormal larvae.
URI
http://hdl.handle.net/10862/1758
Suggested Citation
Caberoy, N. B., & Quinitio, G. F. (1998). Sensitivity of grouper Epinephelus coioides eggs to handling stress at different stages of embryonic development. The Israeli Journal of Aquaculture-Bamidgeh, 50(4), 167-173.
Subject
Embryonic development; Embryos; handling ASFA; Embryonic mortality; Stress; Epinephelus coioides; Groupers
Collections
  • AQD Journal Articles [1155]

Related items

Showing items related by title, author, creator and subject.

  • Thumbnail

    Occurrence of milkfish eggs in the adjacent waters of Panay Island, Philippines 

    Senta, Tetsushi; Kumagai, Shigeru; Ver, Leo (Aquaculture Department, Southeast Asian Fisheries Development Center, 1976)
    Location of spawning grounds of milkfish is one of the most important steps towards gaining knowledge on the spawning habits of the fish as well as the early life history and nature of its eggs and larvae. The present study ...
  • Thumbnail

    Induced spawning and early life description of the mangrove red snapper, Lutjanus argentimaculatus 

    Emata, Arnil C.; Eullaran, Bernadita; Bagarinao, Teodora (Elsevier, 1994)
    Wild-caught mangrove red snapper, Lutjanus argentimaculatus, reared in a concrete tank for 1 year, spontaneously matured in June 1992. On 19 August 1992, a sexually mature female and male (4.6 and 3.2 kg body weight, ...
  • Thumbnail

    Fatty acid composition of five candidate aquaculture species in Central Philippines 

    Ogata, Hiroshi Y.; Emata, Arnil C.; Garibay, Esteban S.; Furuita, Hirofumi (Elsevier, 2004)
    Fatty acid composition was determined in five candidate aquaculture species, mangrove red snapper (Lutjanus argentimaculatus), two rabbitfish (Siganus guttatus and S. canaliculatus), coral trout (Plectropomus leopardus) ...

© SEAFDEC 2022
Contact Us | Send Feedback
 

 

Browse

All of SIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister

Statistics

View Usage Statistics
Related Links
SEAFDEC/TD IRSEAFDEC/AQD IRSEAFDEC/MFRDMD IRSEAFDEC/IFRDMD IR

© SEAFDEC 2022
Contact Us | Send Feedback