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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39544

Title: Biology of Uroteuthis duvauceli in the Southern East China Sea
Authors: Kae-yih Wang;ke-yang Chang;Jyun-Long Chen;Ruei-Gu Chen;Cheng-Hsin Liao
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Keywords: East China Sea;torch-light fishery;Uroteuthis duvauceli;spawning ground;growth
Date: 2015-03
Issue Date: 2016-12-19T01:07:57Z
Publisher: J. Fish. Soc. Taiwan
Abstract: Abstract:Uroteuthis duvauceli is a common bycatch species of torch-light fisheries in Taiwan. We found that the
dominant myopsid squid in the southern East China Sea had shifted from U. edulis and U. chinensis to U.
duvauceli in a period from September to October 2012. To investigate this change and better understand the
life history of this species, the present study collected data including the age, growth, reproduction and spawning
grounds of U. duvauceli in the southern East China Sea for the first time. For both male and female U. duvauceli,
the observed maximum age was 99 days, indicating a short lifespans. In terms of growth, mantle length with
respect to age increase, was best described by a power model for female U. duvauceli and a linear model for
males. In addition, we analyzed five population structures of U. duvauceli in three different regions (the inshore
water, continental shelf water, and strait water), the results indicated that the strait water and continental shelf are
the spawning (> 72% mated) and feeding grounds of U. duvauceli, respectively. Additionally, we also observed
that high sea temperature may have caused the observed surge in U. duvauceli abundance.
Relation: 42(1), pp.9-23
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39544
Appears in Collections:[Department of Environmental Biology and Fisheries Science] Periodical Articles

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