文献类型：期刊文献

英文题名：BIOLOGICAL CHARACTERISTICS AND SPATIAL-TEMPORAL DISTRIBUTION OF MITRE SQUID, UROTEUTHIS CHINENSIS, IN THE BEIBU GULF, SOUTH CHINA SEA

作者：Yan Yunrong[1,2,3];Li Yuyuan[2];Yang Shengyun[1];Wu Guirong[2];Tao Yajin[2];Feng Qibin[2];Lu Huosheng[2,3]

机构：[1]Xiamen Univ, Coll Ocean & Earth Sci, Xiamen 361005, Fujian Province, Peoples R China;[2]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Guangdong, Peoples R China;[3]Guangdong Ocean Univ, Ctr South China Sea Fisheries Resources Monitorig, Zhanjiang 524088, Guangdong, Peoples R China

年份：2013

卷号：32

期号：3

起止页码：835

外文期刊名：JOURNAL OF SHELLFISH RESEARCH

收录：SCI-EXPANDED(收录号：WOS:000331554700027)、、WOS

基金：This project, named Response of the Beibu Gulf Fish Food Web to Marine Fishing, was supported by the National Natural Science Foundation of China (no. 41376158). The research was also funded by China Key Projects in National Science and Technology (no. SQ2012BAJY307301), the National Natural Science Foundation of Guangdong, China (no. S2012040007813), and the Foundation for Distinguished Young Talents in Higher Education of Guangdong, China (no. LYM09089). We thank Barbara Kieser for her language assistance and valuable review of the manuscript. We also thank anonymous reviewers for English corrections and comments that improved the original manuscript.

语种：英文

外文关键词：mitre squid; Uroteuthis chinensis; Beibu Gulf; biological characteristics; spatial-temporal distribution

外文摘要：Based on seasonal sampling in the Beibu Gulf (Tonkin Gulf), South China Sea, from August 2010 to May 2011, biological characteristics such as growth, reproduction, and ingestion of 2,179 mitre squid, Uroteuthis chinensis, were investigated. The results showed that the maximum and minimum mantle lengths of U. chinensis were 438 mm and 49 mm, respectively, whereas the corresponding body weights were 723 g and 7.3 g, respectively. Both mantle length and body weight peaked in spring. The relationship between mantle length (L, in millimeters) and body weight (W, in grams) was W = 1.43X10(-3)XL(2.19) (R-2 = 0.92), and between mantle length and gutted weight (W, in grams) was W = 1.04X10(-3)XL(2.24) (R-2 = 0.97). The number of females was equal to that of males, with a sex ratio of 1:1.01. Furthermore, no obvious seasonal change was observed. There was no stage VI of gonad maturation, and stage I was dominant year-round. The feeding intensity was low and the empty stomach rate was high throughout the year. The mean trophic levels from spring to winter were 3.6, 2.7, 3.0, and 3.3, respectively. The results indicated considerable differences in the sampling areas. In addition, seasonal changes in catch and distribution were observable whereas biomass varied greatly.