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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/25108

Title: Reproductive biology of whitespotted bamboo shark Chiloscyllium plagiosum in northern waters off Taiwan
Authors: Wei-Ke CHEN;Kwang-Ming LIU
Contributors: NTOU:Institute of Marine Affairs and Resource Managemen
Keywords: Chiloscyllium plagiosum;northern Taiwan;reproduction
Date: 2006-12
Issue Date: 2011-10-20T08:21:18Z
Publisher: Fisheries Science
Abstract: abstract:In total, 491 whitespotted bamboo sharks were collected from northern Taiwanese waters from February 2002 to February 2003. The sex ratio of the specimens was 0.65, total length (TL) ranged from 35.3–85 cm, and weight ranged 124–2580 g. The mean size at first maturity was estimated to be 64.9 and 65.6 cm TL for females and males, respectively, based on the relationship between mature percentage and TL. The ovulation season was estimated as March to May based on gonadosomatic index (GSI) variations and captive observation. The monthly changes in GSI of males suggested that the mating season was from December to January. The inconsistency between mating and ovulation seasons suggested that females have sperm storage and delayed fertilization. One or two eggs were deposited every 6 or 7 days on average. Deposition of eggs extended for 2 months, and fecundity was 8 ± 3.8 eggs. Thirteen of 48 eggs deposited in 2003 were hatched and the hatching rate was 0.27. The hatching period was 107 ± 9.3 days with accumulated water temperature ranging from 2372–2835°C.
Relation: 72(6), pp.1215–1224
URI: http://ntour.ntou.edu.tw/handle/987654321/25108
Appears in Collections:[海洋事務與資源管理研究所] 期刊論文

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