Tuna and tuna-like fish resources in the South China Sea and adjacent waters
MetadataShow full item record
The distribution of tunas and billfishes in the South China Sea and the Southeast Asian waters was shown on the commercial longline data. The seasonal changes in the hook-rate and the size composition of the yellowfin and bigeye tuna in the South China Sea were given and the previous suppositions on their stock structures in adjacent areas, the Indonesian waters and the Indian Ocean, were reviewed. The estimated Japanese longline catches from the South China Sea attained their peak of about 6,800 tons in 1967 and since then they have fluctuated between 2,000 and 5,000 tons with somewhat downward trend. The yellowfin and bigeye tuna accounted for ninety percent of the Japanese catch more. The remainder was occupied by the billfish, mostly the blue marlin and black marlin. The total longline catch by the Japanese and Taiwanese fisheries from the South China Sea area were roughly estimated to be between 5,000 and 8,000 tons in a recent few years. Among the small-sized tuna and tuna-like fishes, the skipjack, little tuna, longtail tuna, frigate mackerel and bonito seemed to be promising for their future exploitation. The biological information on some of them was briefly reviewed. Recent activities in research on tuna fisheries in the Indo-Pacific areas (IPFC area) have been fully reviewed by Suda (1971). For the South China Sea area, however, little has been reported on the biology of large-sized tuna except a few studies (Nakamura, 1953), although this area has long supported the tuna longline fleets from Taiwan and Japan. The purposes of this paper are: (1) to show the distribution of tunas and billfishes caught by the Japanese commercial longline fishery in the South China Sea and its adjacent waters on the past data, (2) to show the recent trend in the longline catches from these areas and (3) to make a short review on the occurrence of small-sized tuna and tuna-like fishes in Southeast Asian waters.
Kikawa, S. (1977). Tuna and tuna-like fish resources in the South China Sea and adjacent waters. In Proceedings of the Technical Seminar on South China Sea Fisheries Resources, Bangkok, Thailand, 21-25 May 1973 (pp. 31-41). Tokyo, Japan: Japan International Cooperation Agency.
Tuna fisheries; Finfish fisheries; Marine fisheries; Pelagic fisheries; Commercial species; Longlining; Size distribution; Seasonal distribution; Geographical distribution; Fishing effort; Check lists; Natural resources; Thunnus albacares; Thunnus obesus; Thunnus alalunga; Thunnus thynnus; Istiophorus platypterus; Tetrapturus angustirostris; Kajikia audax; Makaira nigricans; Makaira mazara; Makaira indica; Xiphias gladius; Katsuwonus pelamis; South China Sea
Showing items related by title, author, creator and subject.
Size-selective catch in tropical tuna purse seine fishery in the Eastern Indian Ocean: Assessment on new selectivity model for purse seine net Chumchuen, Watcharapong; Matsuoka, Tatsuro; Anraku, Kazuhiko; Arnupapboon, Sukchai (Springer Verlag, 2016)A series of purse seine survey fishing was conducted in the Eastern Indian Ocean from 1995 to 2003 by M. V. SEAFDEC in order to assess the degree of selective capture in tropical tuna purse seining around drift fish ...
Pucharoen, Jariya (Marine Fisheries Research Department, Southeast Asian Fisheries Development Center, 2008)The study was conducted to determine the level of heavy metals such as cadmium, lead and total mercury in fish and fish products in Thailand. The following are the fish products that were evaluated in the study, frozen ...
Catch of experimental longline, purse seine and handline in the South China Sea, Area III: Western Philippines Barut, Noel C. (Secretariat, Southeast Asian Fisheries Development Center, 2000)This paper presents the tuna longline fishing operation conducted in western Philippine waters as well as the port sampling conducted in Zambales. The longline fishing operation was not successful in catching tuna but ...