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  • 01 SEAFDEC/AQD Publications
  • Conference Proceedings
  • Proceedings of the Regional Technical Consultation on Stock Enhancement for Threatened Species of International Concern
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  • 01 SEAFDEC/AQD Publications
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  • Proceedings of the Regional Technical Consultation on Stock Enhancement for Threatened Species of International Concern
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Biology and status of aquaculture for giant clams (Tridacnidae) in the Ryukyu Islands, southern Japan

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IwaiK2006.pdf (1.614Mb) Open Access
Downloads: 681
日付
2006
著者
Iwai, Kenji
Kiso, Katsuhiro
Kubo, Hirofumi
Page views
2,798
主題
clam culture ASFA
bivalve culture ASFA
clam fisheries ASFA
spat ASFA
mariculture ASFA
seed (aquaculture) ASFA
seed production ASFA
stocking (organisms) ASFA
transplantation ASFA
biology ASFA
functional morphology ASFA
classification ASFA
taxonomy ASFA
habitats ASFA
life cycle ASFA
molluscan larvae ASFA
Japan AGROVOC
Tridacna derasa AGROVOC
Tridacna crocea AGROVOC
Tridacna squamosa AGROVOC
Tridacna maxima AGROVOC
Hippopus hippopus AGROVOC
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The Ryukyu Islands consist of many islands located between Kyushu in mainland Japan and Taiwan. The islands in the south-western area of the Ryukyu Islands belong to the Okinawa Prefecture. The Ryukyu Islands are strongly affected by the Kuroshio Current and are renowned for their coral reefs with high diversity of tropical and subtropical species. Giant clams traditionally have been utilized as fisheries resources for a long time in this area. According to fisheries statistics, catches of Tridacna crocea in Okinawa have decreased drastically during the last 30 years and currently are less than one tenth of previous catches. Fishing can easily deplete stocks of giant clams because the clams inhabit shallow waters and take at least three years to attain sexual maturity. Techniques for the mass seed production and aquaculture of three species (T. crocea, T. squamosa, and T. derasa) were established in Okinawa. Four hundred thousand seeds of giant clams of 8 mm shell length (SL) are supplied to fishermen for use in aquaculture or stock enhancement every year. This paper will review the (1) biology of giant clams, (2) present status of aquaculture of giant clams in Okinawa, and (3) other studies on giant clams in southern Japan.
URI
http://hdl.handle.net/10862/2931
Suggested Citation
Iwai, K., Kiso, K., & Kubo, H. (2006). Biology and status of aquaculture for giant clams (Tridacnidae) in the Ryukyu Islands, southern Japan. In J. H. Primavera, E. T. Quinitio, & M. R. R. Eguia (Eds.), Proceedings of the Regional Technical Consultation on Stock Enhancement for Threatened Species of International Concern, Iloilo City, Philippines, 13-15 July 2005 (pp. 27-38). Tigbauan, Iloilo, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center.
Type
Conference paper
ISBN
9789718511794
Collections
  • Proceedings of the Regional Technical Consultation on Stock Enhancement for Threatened Species of International Concern [17]

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