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.

The effect of micro algal diet and rearing condition on gonad maturity, fecundity and embryonic development of the window-pane shell, Placuna placenta Linnaeus.

Thumbnail
View/Open
Request this document
Date
2002
Author
Madrones-Ladja, Jocelyn A.
dela Peña, Milagros R.
Parami, Neil P.
Page views
75
Metadata
Show full item record

Cited times in Scopus



Share 
 
Abstract
Immature Placuna placenta (Linnaeus) broodstock were given the micro algae Isochrysis galbana (T-ISO) Parke and Tetraselmis tetrahele (G.S. West) at different combinations and density levels and reared in tanks with or without mud substrate. The animals were also reared in the estuary and fed on available natural food. Monthly examination of gonad histology showed a significantly higher gonad index in broodstock reared in tanks with mud substrate than without (P < 0.05). In addition, those given a high-density algal diet (200,000 cells ml−1, 3:1 mixture of I. galbana and T. tetrahele) had a significantly faster gonad development than the low-density diet (100,000 cells ml−1, 1:1 mixture) fed broodstock reaching sexual maturity and gonad index of 330±14 after 1 month (P < 0.0001). P. placenta given the low-density algal diet attained gonad maturity after 3 months and estuary-reared animals after 2 months.

Seawater irradiated by ultraviolet light (925–1395 mW h/l) induced spawning of all mature P. placenta. Estuary-reared animals had a higher fecundity and larger eggs and a higher percentage of fertilized eggs developed to straight-hinged larvae than those reared under other condition. Animals given a low-density algal diet released low number of small eggs which did not fertilize. Natural spawning also occurred in the estuary 2 months after stocking.
URI
http://hdl.handle.net/10862/1941
Suggested Citation
Madrones-Ladja, J. A., dela Peña, M. R., & Parami, N. P. (2002). The effect of micro algal diet and rearing condition on gonad maturity, fecundity and embryonic development of the window-pane shell, Placuna placenta Linnaeus. Aquaculture, 206(3-4), 313-321.
DOI
10.1016/S0044-8486(01)00704-9
Subject
breeding stock ASFA; Diets; embryonic development ASFA; environmental conditions ASFA; fecundity ASFA; feed composition ASFA; feeding experiments ASFA; live feeds ASFA; mud ASFA; sexual maturity ASFA; sexual reproduction ASFA; spawning ASFA; Isochrysis galbana; Placuna placenta; eggs AGROVOC; Tetraselmis tetrathele; Micro algae; Gonad maturity
Collections
  • AQD Journal Articles [1175]

Related items

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

  • Thumbnail

    Nursery and grow-out operation for tilapia and carp 

    Carlos, Manuel H.; Santiago, Corazon B. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1988)
    Most researches conducted at the Binangonan Freshwater Station of the SEAFDEC Aquaculture Department were directed toward enhancing growth and survival of the young tilapia and carp in the nursery as well as increasing ...
  • Thumbnail

    Broodstock management and seed production of the rabbitfish Siganus guttatus (Bloch) and the sea bass Lates calcarifer (Bloch) 

    Duray, Marietta N.; Juario, Jesus V. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1988)
    This paper reviews results of studies conducted on the rabbitfish, Siganus guttatus (Bloch) and the sea bass Lates calcarifer (Bloch) at the Aquaculture Department of the Southeast Asian Fisheries Development Center. Studies ...
  • Thumbnail

    Broodstock management and seed production of milkfish 

    Marte, Clarissa L. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1988)
    Milkfish (Chanos chanos Forsskal) remains one of the cheapest sources of protein for developing countries in Southeast Asia, particularly in the Philippines. The unpredictable supply of wild fry, the only source of seed ...

© SEAFDEC 2023
Contact Us
 

 

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 2023
Contact Us