SEAFDEC/AQDINSTITUTIONAL REPOSITORY
    • English
    • 日本語
    • ไทย
    • Bahasa Indonesia
  • English 
    • English
    • 日本語
    • ไทย
    • Bahasa Indonesia
  • Login
View Item 
  •   SEAFDEC/AQD Institutional Repository Home
  • 03 SEAFDEC/AQD External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • View Item
  •   SEAFDEC/AQD Institutional Repository Home
  • 03 SEAFDEC/AQD External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Growth and production of deformed and nondeformed hatchery-bred milkfish (Chanos chanos) in brackishwater ponds

  • Global styles
  • MLA
  • Vancouver
  • Elsevier - Harvard
  • APA
  • Help
Thumbnail
View/Open
Request a copy
Date
1999
Author
Sumagaysay, N. S.
Hilomen-Garcia, G. V.
Garcia, LM ORCID
Page views
3,507
Subject
malformations ASFA
stress ASFA
fish culture ASFA
mortality causes ASFA
salinity effects ASFA
stocking density ASFA
survival ASFA
Chanos chanos AGROVOC
milkfish AGROVOC
Taxonomic term
Chanos chanos GBIF
Metadata
Show full item record

Share 
 
Abstract
This study evaluated the growth and survival of morphologically deformed and nondeformed hatchery-bred milkfish in brackishwater ponds. It compared the size-frequency distribution of the nondeformed fish with the deformed ones, and determined the effects of different types of deformity on growth. The deformities include the absence of an upper jaw, a folded operculum with gills exposed, a cleft branchiostegal membrane, scoliosis, etc. The results were compared with production of wild stock. Hatchery-bred and wild milkfish fry were grown separately in nursery ponds (500 m2/pond) at 10 individuals/m2. After a month, the juveniles (average weight hatchery-bred 6.0 g; wild 9.5 g) were transferred to seven rearing ponds of 1000 m2 each (stocking density 3000/ha). Three ponds were stocked with selected, nondeformed hatchery-bred fish (unmixed stock), three ponds with a combination of deformed and nondeformed hatchery-bred fish (1:2 ratio; mixed stock), and one pond with wild fish. The final weight, specific growth rate and survival of the nondeformed fish (mixed and unmixed stock) after four months of culture were significantly higher (p<0.05) than those of the deformed fish. Production, however, did not significantly differ between the unmixed nondeformed (433 kg/ha) and the mixed deformed and nondeformed (377 kg/ha) fish. Survival of the deformed stock (56%) was significantly lower (p<0.05) than that of the nondeformed stock (86-88%). Approximately 92% of the deformed stock and 17-20% of the nondeformed were below 150 g. Severe deformities such as the absence of an upper jaw and exposure of all or most of the gills hindered fish growth, while widening of the operculum or branchiostegal membrane, scoliosis, or absence of the anal fin had less effect on growth. To lower the incidence of deformities in grow-out ponds, milkfish fry should be reared to the early juvenile stage in nursery ponds for at least a month. The harsh natural conditions in the nursery ponds (e.g., presence of predators, abrupt changes in salinity, temperature and dissolved oxygen) and stress during transfer to rearing ponds may eliminate most of the weak fish and those with severe deformities.
URI
http://hdl.handle.net/10862/995
Suggested Citation
Sumagaysay, N. S., Hilomen-Garcia, G. V., & Garcia, L. (1999). Growth and production of deformed and nondeformed hatchery-bred milkfish (Chanos chanos) in brackishwater ponds. The Israeli Journal of Aquaculture-Bamidgeh, 51(3), 106-113. http://hdl.handle.net/10862/995
Type
Article
ISSN
0792-156X
Collections
  • Journal Articles [1155]

Related items

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

  • Thumbnail

    Proceedings of the Seminar-Workshop on Aquaculture Development in Southeast Asia and Prospects for Seafarming and Searanching, 19-23 August 1991, Iloilo City, Philippines 

    Lacanilao, F.; Coloso, Relicardo M.; Quinitio, Gerald F. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1994)
    Documents the presentations at ADSEA '91, the 2nd Seminar-Workshop on Aquaculture Development in Southeast Asia. ADSEA '91 includes reviews of the status of the researches conducted by Southeast Asian Fisheries Development ...
  • Thumbnail

    Review of SEAFDEC/AQD finfish seed production research 

    Quinitio, G. F.; Duray, M. N. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
    Research on seed production of several foodfishes has been a continuing activity of SEAFDEC/AQD since 1976. Fry and juvenile production methods of these fish commodities are in various stages of advancement. For instance, ...
  • Thumbnail

    Order Gonorynchiformes: Chanidae: Milkfish 

    Bagarinao, Teodora ORCID (Food and Agriculture Organization of the United Nations, 1999)

© SEAFDEC/AQD  2022
Contact Us | Send Feedback
 

 

Browse

All of SAIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister

Statistics

View Usage Statistics

© SEAFDEC/AQD  2022
Contact Us | Send Feedback
 

 

Export citations

Export the current results of the search query as a citation list. Select one of the available citation styles, or add a new one using the "Citations format" option present in the "My account" section.

The list of citations that can be exported is limited to items.

Export citations

Export the current item as a citation. Select one of the available citation styles, or add a new one using the "Citations format" option present in the "My account" section.

Export Citations

DOCUMENT REQUEST NOT AVAILABLE

This publication is still available (in PRINT) and for sale at AQD bookstore. The library is currently restricted to send PDF of publications that are still for sale.

You may contact bookstore@seafdec.org.ph or visit AQD bookstore for orders.

FILE UNDER EMBARGO

This file associated with this publication is currently under embargo. This will be available for download after the embargo date.