Welcome to Acta Oceanologica Sinica!

Set as Homepage | Add to favorites

YU Wei,CHEN Xinjun,CHEN Yong,YI Qian,ZHANG Yang. 2015. Effects of environmental variations on the abundance of western winter-spring cohort of neon flying squid (Ommastrephes bartramii) in the Northwest Pacific Ocean. Acta Oceanologica Sinica, 34(8):43－51

Effects of environmental variations on the abundance of western winter-spring cohort of neon flying squid (Ommastrephes bartramii) in the Northwest Pacific Ocean

西北太平洋环境变化对柔鱼冬春生群体资源丰度的影响

Received:June 05, 2014 Revised:August 05, 2014

DOI：10.1007/s13131-015-0707-7

Key words:Ommastrephes bartramii environmental conditions recruitment abundance Northwest Pacific Ocean

中文关键词: 柔鱼环境条件补充量丰度西北太平洋

基金项目:The National High-Tech R & D Program (863 Program) of China under contract No. 2012AA092303; the Project of Shanghai Science and Technology Innovation under contract No. 12231203900; the Industrialization Program of National Development and Reform Commission under contract No. 2159999; the National Key Technologies R & D Program of China under contract No. 2013BAD13B00; the Shanghai Universities First-Class Disciplines Project (Fisheries A); the Funding Program for Outstanding Dissertations in Shanghai Ocean University; the Shanghai Ocean University International Center for Marine Studies.

Author Name	Affiliation	E-mail
YU Wei	College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China Collaborative Innovation Center for National Distant-water Fisheries, Shanghai 201306, China
CHEN Xinjun	College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China National Distant-water Fisheries Engineering Research Center, Shanghai Ocean University, Shanghai 201306, China Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources of Ministry of Education, Shanghai Ocean University, Shanghai 201306, China Collaborative Innovation Center for National Distant-water Fisheries, Shanghai 201306, China	xjchen@shou.edu.cn
CHEN Yong	School of Marine Sciences, University of Maine, Orono, Maine 04469, USA College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
YI Qian	College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China National Distant-water Fisheries Engineering Research Center, Shanghai Ocean University, Shanghai 201306, China Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources of Ministry of Education, Shanghai Ocean University, Shanghai 201306, China Collaborative Innovation Center for National Distant-water Fisheries, Shanghai 201306, China
ZHANG Yang	College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China

Hits: 2101

Download times: 1208

Abstract:

During 1995-2011, annual production of winter-spring cohort of Ommastrephes bartramii for Chinese squid-jigging fishery has greatly fluctuated, which is closely related to the environmental conditions on the spawning and fishing grounds. To better understand how squid recruitment and abundance were influenced by ocean environmental conditions, biological and physical environmental variables including sea surface temperature (SST), SST anomaly (SSTA), chlorophyll a (Chl a) concentration and the Kuroshio Current were examined during years with the highest (1999), intermediate (2005), and lowest (2009) catches. Catch per unit effort (CPUE) of the squid-jigging vessels was used as an indicator of squid abundance. The results indicated that high SST and Chl a concentration on the spawning ground in 1999 resulted in favorable incubation and feeding conditions for squid recruitment. Whereas the suitable spawning zone (SSZ) in 2009 shifted southward and coincided with low SST and Chl a concentration, resulting in a reduction in the squid recruitment. The small difference of SSZ area in the three years suggested the SSZ provided limited influences on the variability in squid recruitment. Furthermore, high squid abundance in 1999 and 2005 was associated with warm SSTA on the fishing ground. While the cool SSTA on the fishing ground in 2009 contributed to adverse habitat for the squid, leading to extremely low abundance. It was inferred that strengthened intensity of the Kuroshio force generally yielded favorable environmental conditions for O. bartramii. Future research are suggested to focus on the fundamental research on the early life stage of O. bartramii and mechanism of how the ocean-climate variability affects the squid abundance and spatial distribution by coupling physical model with squid biological process to explore transport path and abundance distribution.

中文摘要:

1995-2011年间中国鱿钓渔业捕获的柔鱼冬春生群体(Ommastrephes bartramii)年总产量波动明显,这与柔鱼产卵场和渔场的环境条件关系密切.为更好了解海洋环境变化对柔鱼资源补充量和丰度影响,本文根据最高产量年份(1999),正常年份(2005)和最低产量年份(2009)的生产统计资料,调查对比分析三年的产卵场和渔场范围内生物和物理环境变量,包括海表面温度(SST),温度距平值(SSTA),叶绿素浓度(Chl a)和黑潮强度.鱿钓船的单位捕捞努力量渔获量(CPUE)作为表征资源丰度的指标因子.结果表明,1999年柔鱼产卵场温度和叶绿素浓度较高,为柔鱼的资源补充创造了有利的孵化和摄食条件;而2009年适宜柔鱼产卵的海域向南移动,对应了较低的温度和叶绿素浓度,导致资源补充量降低.1999,2005和2009年适宜产卵场海域面积差异较小,表明适宜的产卵场面积变化对资源补充量的影响有限.此外,1999和2005年较高的资源丰度与渔场变暖的SSTA有关,而2009年渔场SSTA降低产生不利的柔鱼栖息地,从而导致丰度下降.本研究认为强劲的黑潮势力产生有利于柔鱼生长的环境条件.建议未来研究集中于生物基础研究如柔鱼的早期生活史研究,以及通过物理模型耦合生物过程探究柔鱼输送和丰度分布过程的柔鱼种群动态机制研究.

HTML View Full Text View/Add Comment Download reader