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dc.contributor.authorSenta, Tetsushi
dc.contributor.authorKungvankij, Pinij
dc.contributor.authorTan, Sen-Min
dc.date.accessioned2018-11-19T03:46:54Z
dc.date.available2018-11-19T03:46:54Z
dc.date.issued1977
dc.identifier.citationSenta, T., Kungvankij, P., & Tan, S.-M. (1977). Biological study of red snapper, Lutjanus sanguineus. In Proceedings of the Technical Seminar on South China Sea Fisheries Resources, Bangkok, Thailand, 21-25 May 1973 (pp. 78-84). Tokyo, Japan: Japan International Cooperation Agency.en
dc.identifier.urihttp://hdl.handle.net/20.500.12066/4103
dc.description.abstractAmong the red snappers caught by trawling in the South China Sea, L. sanguineus is the most important species, comprising more than 10% of the total catch. Although L. sanguineus is widely distributed in the South China Sea, its pattern of distribution seems to be rather patchy. However, they were most abundant at 35—80 m. water depth and inhabit muddy-sand areas especially where “Neptune’s cup” are abundant. Size frequency histograms indicate four to six size groups, with peaks of almost the same height. The growth rate of fish of 23 cm. was taken to be approximately 2 cm. per month. As no significant difference in length-weight relationship between male an female was observed, the following formula can be applied for both sexes. W = 7.64 x 10–5 L2.823 where, W = body weight (g). L = body length (mm). The number of ovarian eggs ranged from 69 to 260.104 and the regression between the number of eggs in thousand (N) and fish weight in gram (W) was N =0.4459W + 83.2. High values of gonadal index from March to November with a peak in April—June suggests a prolonged spawning season.en
dc.language.isoenen
dc.publisherJapan International Cooperation Agencyen
dc.subjectLutjanus sanguineus
dc.subjectLutjanus sebae
dc.subjectSouth East Asiaen
dc.titleBiological study of red snapper, Lutjanus sanguineusen
dc.typeConference paperen
dc.citation.spage78
dc.citation.epage84
dc.subject.asfafishery biologyen
dc.subject.asfamarine fishen
dc.subject.asfafeeding behaviouren
dc.subject.asfastomach contenten
dc.subject.asfademersal fishen
dc.subject.asfaDietsen
dc.subject.asfacommercial speciesen
dc.subject.asfatrawlingen
dc.subject.asfalive feedsen
dc.citation.conferenceTitleProceedings of the Technical Seminar on South China Sea Fisheries Resources, Bangkok, Thailand, 21-25 May 1973en


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