English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26987/38787
Visitors : 2301643      Online Users : 80
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44975

Title: Age and growth of the whitespotted bamboo shark, Chiloscyllium plagiosum, in the northern waters of Taiwan.
Authors: Wei-Ke Chen;Po-Chuan Chen;Kwang-Ming Liu;Shyh-Bin Wang
Contributors: 國立臺灣海洋大學:海洋事務與資源管理研究所
Keywords: Age and growth;Chiloscyllium plagiosum;von Bertalanffy growth equation;Northern Taiwan
Date: 2007
Issue Date: 2017-12-20T07:47:56Z
Publisher: Zoological Studies
Abstract: abstract:Age and growth estimates of
the whitespotted bamboo shark, Chiloscyllium plagiosum, in the northern waters of Taiwan. Zoological Studies
46(1): 92-102. Age and growth rates of the whitespotted bamboo shark, Chiloscyllium plagiosum, were
described from 481 specimens (313 females and 168 males, 35.5-85.0 cm in total length) collected from Feb.
2002 to Feb. 2003 in waters off northern Taiwan on bottom longlines or lobster trap nets. The sex-specific relationships
between weight (W) and total length (TL) significantly differed and could be expressed as: W = 1.64 x
10-3 TL3.15 (n = 313, p < 0.05) for females and W = 5.09 x 10-3 TL2.87 (n = 168, p < 0.05) for males. Age was
determined using vertebral banding patterns. A single growth band (comprising translucent and opaque zones)
is formed each year, with up to 7 bands observed for both sexes. A marginal increment ratio analysis indicated
that the translucent zone formed from June to Sept. Four growth functions, the traditional von Bertalanffy
(VBGF), VBGF with a fixed size-at-birth (L0), Gompertz, and Robertson functions were used to model the
observed length-at-age data. The sex-specific growth equations significantly differed. The traditional VBGF,
based on observed length-at-age data, predicted an asymptotic length (L∞) of 95.9 cm TL, a growth coefficient
(k) of 0.205, a theoretical age at zero length (t
0) of -0.95 yr for females; and an L∞ of 100.9 cm TL, k of 0.198, t
0
of -0.90 yr for males. The parameters of VBGF with L0 set to 15.0 cm were estimated to be an of L∞ 93.2 cm
TL and k of 0.224 for females; and an of L∞ 98.5 cm TL and k of 0.212 for males. Akaike,
s information criterion
showed that the VBGF with L0 had the best fit. Ages at maturity estimated from the VBGF with L0 were 4.5 and
4.4 yr for females and males, respectively.
Relation: 46(1) pp.92-102
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44975
Appears in Collections:[海洋事務與資源管理研究所] 期刊論文

Files in This Item:

There are no files associated with this item.



All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback