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  1. JIRCAS International Symposium Proceedings
  1. JIRCAS International Symposium Proceedings
  2. 2022: Artisanal Fisheries and Aquaculture in the Sustainable Food Systems

Improving artisanal fisheries through community-based prawn stock enhancement in a mangrove estuary

https://doi.org/10.34556/0002000688
https://doi.org/10.34556/0002000688
3a95c2ed-33a7-4228-bc09-92de4691b2cc
名前 / ファイル ライセンス アクション
International_symp2022-_59-66.pdf International_symp2022-_59-66 (1.9 MB)
Item type 国際農研デフォルトアイテムタイプ(フル)(1)
公開日 2025-02-03
タイトル
タイトル Improving artisanal fisheries through community-based prawn stock enhancement in a mangrove estuary
言語 en
作成者 Altamirano, Jon P.

× Altamirano, Jon P.

en Altamirano, Jon P.

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Abstract
内容記述 Tropical seafood, especially prawns, have always been in high demand with high market prices. Because of this, wild prawn resources are often overfished as indicated by the increasing number of fishers, but with overall declining catch volume and sizes through the years. Prawn aquaculture has, as of course, significantly contributed to the total yield in the past decades. However, the expansion of farms and ponds has often negatively affected the natural nursery grounds in the estuaries and mangroves. The economic gains from aquaculture are limited only to those who invested. However, local communities and artisanal fishers are often deprived of such gains. They are still reliant upon the dwindling natural stocks of fisheries resources. This is where the concept of stock enhancement comes in, wherein hatchery-produced juveniles are released into the water body in order to increase capture fisheries yield for local fishers.
In this talk, I will present the case of the tiger prawn Penaeus monodon stock enhancement in the New Washington Estuary (NWE), in Aklan, central Philippines. The NWE was a productive fishing ground providing >24 kg/gear/day of catch in the 1970s but steadily declined to <0.7 kg/gear/day in 2010s. Prawn catches declined both in quality and quantity. Meanwhile, mangrove cover was reduced from 4800 ha in 1950s to only <800 ha in 2010s. Site-specific studies were conducted in NWE on prawn nursery rearing, small-scale release and monitoring experiments, as well as social assessments. Our studies produced essential scientific data to guide future stock enhancement activities in NWE. Even at an experimental scale, our releases showed significant increases in catch by at least 8% but can potentially increase daily income by >400%. However, in order to sustain the prawn fisheries and optimize the benefits, long-term management plans by all stakeholders are needed, especially between the communities and the local government.
言語 en
内容記述
内容記述タイプ Other
内容記述 JIRCAS International Symposium 2022, Session 2: Research and Application to Enhance Sustainability and Productivity of Artisanal Fisheries and Aquaculture
Chairperson: KANAMORI Norihito
言語 en
出版者
出版者 Japan International Research Center for Agricultural Sciences (JIRCAS)
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_c94f
資源タイプ conference presentation
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.34556/0002000688
ID登録タイプ JaLC
関連情報
関連タイプ isPartOf
識別子タイプ DOI
関連識別子 https://doi.org/10.34556/0002000675
関連名称 Artisanal Fisheries and Aquaculture in the Sustainable Food Systems
書誌情報 en : JIRCAS International Symposium Proceedings : Artisanal Fisheries and Aquaculture in the Sustainable Food Systems

巻 2022, p. 59-66, 発行日 2022-12
会議記述
会議名 JIRCAS International Symposium 2022 : Artisanal Fisheries and Aquaculture in the Sustainable Food Systems
主催機関 Japan International Research Center for Agricultural Sciences (JIRCAS)
開催期間 2022-11-22
開催会場 Hitotsubashi Hall, National Center of Sciences Building
開催国 JPN
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