Egg quality of grouper Epinephelus coioides fed different fatty acid sources
Abstract
Quality of eggs spawned by Epinephelus coioides fed fish by catch (control). Cod liver oil-enriched fish by catch (TFC), and commercial HUFA A-enriched fish by catch (TFS) was monitored. Monthly egg production, spawning frequency, fertilization rate, egg viability, and hatching rates of the control were significantly higher compared to TFS Egg production. Spawning frequency and hatching rate of TC and TFS were not significantly different. Results suggest that varying the species of fish by catch could provide the requirements of E. Coioides broodstock so as to provide quality eggs.
Source
In: MacKinlay, D., Eldridge, M. (eds.). The Fish Egg: Its Biology and Culture Symposium Proceedings. International Congress on the Biology of Fishes, 14-18 July 1996, San Francisco State University. Bethesda, Maryland: American Fisheries Society, Physiology Section. pp. 103-107
Publisher
American Fisheries Society, Physiology SectionSubject
Type
Conference paperCollections
- Conference Proceedings [283]
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Book chapter | Article
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Book chapter
Collection of the orange-spotted grouper Epinephelus coioides from Tinagong Dagat and Sapian Bay in northern Panay
- In T Bagarinao (Ed.), Research Output of the Fisheries Sector Program, 2007 - Bureau of Agricultural Research, Department of AgricultureIn Capiz, northern Panay, grouper catches by hand picking, hook and line, shelters, and fish corral were low throughout the year, on average 1-3 fish from each fishing operation, but higher in Tinagong Dagat than in Sapian Bay. Epinephelus coioides was the most common of the three grouper species collected; E. quoyanus and E. malabaricus were not numerous. The 882 specimens of E. coioides from Tinagong Dagat measured from 3.6 to 39 cm in standard length; the 250 E. coioides from Sapian Bay were between 1.7 and 31.2 cm SL. The size distribution showed a modal length of about 17 cm SL (21% of the fish) in Tinagong Dagat, and 11 cm (26%) in Sapian Bay. Small juveniles 2–8 cm were collected from Tinagong Dagat in January-April 1993, but not in Jan-Apr 1994. Such small juveniles were also collected from Sapian Bay in January and in April–August 1993. Groupers 9–23 cm occurred year round, but the 9–15 cm group was more abundant from January to June. At both sites, groupers >30 cm could hardly be found. Both grouper habitats experienced wide ranges of water temperature, salinity, and dissolved oxygen during the year. -
Conference paper
Isolation, identification of causative agent of "red boil disease" in grouper (Epinephelus salmoides) and its possible control by vaccination
- In Proceedings of the International Workshop on Pen Cage Culture of Fish, 11-22 February 1979, Tigbauan, Iloilo, Philippines, 1979 - Aquaculture Department, Southeast Asian Fisheries Development Center; International Development Research CentreThis report presents the initial results of studies on the isolation and identification of the causative agent as well as possible immunization of the estuary groupers. It is hoped that by a vaccination programme, fish could be made immune to such disease. Results indicate: (1) Vibrio parahaemolyticus is pathogenic to estuary grouper (2) that the vaccines did not seem to protect the fish against the vibrio when challenged one week after vaccination, but that this was due to slow antibody production of the fish as salmonids challenged about 30-35 days after vaccination reported good protection against Vibrio anguillarum and other bacterial diseases. Experiments are now in progress to challenge the vaccinated groupers at a later stage.
