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.

Aquaculture-based restoration and stock enhancement of tiger shrimps in the Philippines

Thumbnail
View/Open
Request this document
Date
2016
Author
Altamirano, Jon
Salayo, Nerissa
Kurokura, Hisashi
Fushimi, Hiroshi
Ishikawa, Satoshi
Page views
186
Metadata
Show full item record

Share 
 
Abstract
In central Philippines, the Aquaculture Department of the Southeast Asian Fisheries Development Center (SEAFDEC/AQD), with strong collaboration and support from the Research Institute for Humanity and Nature (RIHN) of Kyoto, Japan, has been looking into the stock enhancement of tiger shrimp Penaeus monodon in the New Washington Estuary (NWE), province of Aklan, central Philippines. The NWE was a productive fishing ground that has been suffering from degenerating brackishwater fisheries and estuarine environment. Average daily catch declined from 24 kg in 1970s to only 0.7 kg at present. Shrimp fisheries, the most important livelihood, declined in quality and quantity. Tiger shrimps were abundant in catch until the early 1990s when these were observed to decline in volume, replaced by smaller and cheaper species. This was coincidental with the rapid decline in mangrove cover for ponds and huge increase in fishing pressure. It is clear that crucial interventions are required to restore the tiger shrimp fisheries in the NWE in order to increase income of local fishers, while promoting reduction of fishing gears and restoration of mangroves. Stock enhancement of tiger shrimps shows good potential in answering these needs. Site-specific assessments were conducted to evaluate prospects of shrimp stock enhancement in NWE. Conservative simulations of capture of released stocks showed that fishers can increase income by 300%. To decrease fishing pressure in the area, number of gears per fisher may have to be reduced but shrimp catches will be relatively high-priced. Comparative experiments using aquaculture techniques were done to identify strategies especially in the delicate intermediate acclimation rearing. Aquaculture protocols like those for pond preparation were also adapted to be used in a mangrove pen nursery rearing system for shrimps. Supplemental feeding with formulated feeds increased carrying capacity of the culture area, while enhancing growth and survival of stocks. Culture experiments showed that shrimps grow to 0.5 g within 1 mo and >1g in 2 mo. High stocking density of 40-60 shrimps m-2 can be used for <2 mo rearing in a mangrove pen. Release experiments showed that 60-d old shrimps have higher chances of survival when released in the estuaries. With strong support from local communities, government and other sectors, together with effective management and law enforcement, aquaculture-based stock enhancement of tiger shrimps can be a viable intervention to restore livelihood and promote estuarine rehabilitation in the NWE.
URI
http://hdl.handle.net/20.500.12067/715
Suggested Citation
Altamirano, J. P., Salayo, N., Kurokura, H., Fushimi, H., & Ishikawa, S. (2016). Aquaculture-based restoration and stock enhancement of tiger shrimps in the Philippines. In K. Hajime, T. Iwata, Y. Theparoonrat, N. Manajit, & V. T. Sulit (Eds.), Consolidating the Strategies for Fishery Resources Enhancement in Southeast Asia. Proceedings of the Symposium on Strategy for Fisheries Resources Enhancement in the Southeast Asian Region, Pattaya, Thailand, 27-30 July 2015 (pp. 166-170). Samutprakan, Thailand: Training Department, Southeast Asian Fisheries Development Center.
Subject
environmental degradation ASFA; stocking density ASFA; resource management ASFA; survival ASFA; Catch/effort; brackishwater aquaculture ASFA; growth ASFA; socioeconomic aspects ASFA; brackishwater environment ASFA; fishing grounds ASFA; feeding ASFA; stocking (organisms) ASFA; feeds ASFA; shrimp culture ASFA; aquaculture regulations ASFA; resource conservation ASFA; estuaries ASFA; carrying capacity ASFA; stock assessment ASFA; environmental impact ASFA; livelihoods ASFA; shrimp fisheries ASFA; cage culture ASFA; culture effects ASFA; stocks ASFA; Penaeus monodon; Philippines
Taxonomic term
Penaeus monodon
Collections
  • AQD Conference Proceedings [291]

Related items

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

  • Thumbnail

    Seagrass Bed Restoration by Fishermen at Hinase in Japan 

    Yanagi, Tetsuo (Training Department, Southeast Asian Fisheries Development Center, 2016)
    Habitat rehabilitation which is very important for fishery resources enhancement should be conducted following the community-based management and ecosystem-based management. In Japan, the Satoumi concept is introduced as ...
  • Thumbnail

    The Philippine aquaculture industry 

    Camacho, Arsenio S.; Macalincag-Lagua, Natividad (Aquaculture Department, Southeast Asian Fisheries Development Center, 1988)
    The aquaculture sector of the Philippine fishing industry registered the highest growth rate of 12.5% in 1977-1986. The contribution of aquaculture to the total fish production was equivalent to 24% in 1986 compared to ...
  • Thumbnail

    Aquaculture development in Japan 

    Mito, Satoshi. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1988)
    Along with the growth of the national economy, aquaculture in Japan has steadily developed in recent years. From 1976 to 1985, production of cultured fish and shellfish increased by 28% from 927 thousand mt to 1184 thousand ...

© 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