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
  • Conference Proceedings
  • AQD Conference Proceedings
  • View Item
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Conference Proceedings
  • AQD Conference Proceedings
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Hatchery management for the window-pane shell, Placuna placenta Linnaeus, 1758

Thumbnail
View/Open
Date
2000
Author
Madrones-Ladja, Jocelyn A.
de la Peña, Milagros R.
Page views
467
Metadata
Show full item record

Share 
 
Abstract
To relieve pressure on wild stock population, a hatchery technique for the window-pane shell, Placuna placenta Linnaeus has to be developed. A study was conducted to determine the suitable algal diet for P. placenta during gonad development and larval rearing. Sexually immature P. placenta broodstock were reared in the estuary or in tanks for four months. Tank-reared animals were fed daily mixture of Isochysis galbana (T-ISO) Parke and Tetraselmis tetrahele (G.S. West) at 100,000 cells/ml, 1:1 (100-I:T), or 200,000 cells/ml, 3:1 (200-3I:T) combinations. Monthly gonad histological examination showed that sexual maturity was attained by animals fed 200-3I:T diet after four months but not in 100-I:T. Estuary-reared broodstock had the highest gonad index among treatments after the first month, but did not reach sexual maturity until the end of the conditioning period. Sexually mature P. placenta from 200-3I:T fed-group spawned when exposed to UV light-irradiated seawater. One-day old larvae were reared in UV light-irradiated seawater until metamorphosis to plantigrade. Larvae were fed daily with monoalgal diet of I. galbana, T. tetrahele, or Chaetoceros calcitrans (Takano) at densities of 10,000-30,000 cells/ml. Larval settlement was observed in all diets after 14 days. Survival rate at metamorphosis was highest (12.60%) when diet of I. galbana was used, but lowest in T. tetrahele [5.1%) (P<0.05). Average shell length increment during the 14 days rearing period were 11.0, 11.38 and 9.92 µm day-1, for Isochrysis, Tetraselmis and Chaetoceros fed larvae, respectively.
URI
http://hdl.handle.net/10862/439
Suggested Citation
Madrones-Ladja, J. A., & de la Peña, M. R. (2000). Hatchery management for the window-pane shell, Placuna placenta Linnaeus, 1758. In J. Hylleberg (Ed.), Proceedings of the 10th International Congress and Workshop of the Tropical Marine Mollusc Programme (TMMP), 20-30 October 1999 (Phuket Marine Biological Center Special Publication 21(1), pp. 189–194). Phuket, Thailand: Phuket Marine Biological Center.
Subject
aquaculture techniques ASFA; breeding ASFA; diet ASFA; feeding experiments ASFA; mollusc culture ASFA; molluscan larvae ASFA; rearing techniques ASFA; Placuna placenta AGROVOC
Collections
  • AQD Conference Proceedings [298]

© SEAFDEC 2025
Contact Us
 

 

Browse

All of SIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

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

© SEAFDEC 2025
Contact Us