摘要
长鳍金枪鱼(Thunnus alalung)是南太平洋金枪鱼渔业的主要捕捞种类之一,具有很高的经济价值,掌握其渔场分布与主要海洋环境因子关系是高效开发利用的基础。根据2011年我国南太平洋渔业生产数据和遥感环境数据,按周分析了长鳍金枪鱼单位捕捞努力量渔获量(Catch per unit of fishing effort,CPUE)的时空变化及与主要环境因子之间的关系。结果表明,南太平洋长鳍金枪鱼渔场重心主要集中在13°S^23°S,164°E^174°E,总体走势为先向东南方向迁移,后又沿西北方向推移。长鳍金枪鱼全年均可作业,其中5月至7月渔获量最高。作业渔场最适温度(Sea Surface Temperature,SST)范围为26~29℃,相应区域内最适叶绿素a浓度(Chlorophyll a concentration,Chl-a)为0.02~0.05 mg/m3,适宜海面高度距平(Sea surface height anomaly,SSHA)范围为4~24 cm。
Albacore （Thunnus alalung） is one of the main catch fisheries for lon Pacific：. The species has a positive significance on the development of tuna longline ne fishery in the South shery for China, in this paper the spatial-temporal distribution and relations with marine environment for albacore in the South were analyzed. Based on the data on the catch of albacore longline fishery in the South Pacific： in 2011 and the data by remote sensing, we analyzed the spatial-temporal distribution of CPUE （ Catch Per Unit Effort） of albacore and their relations. The results showed that CPUE of the albacore distributed from 14°S to 19°S and 166°E to 172°E. The trend of the catch gravity center of albacore appeared to southeast and came back to northwest . The highest catch appeared during May to July. The optimum temperature for fishing grounds ranged from 26 ℃ to 29 ℃. The suitable chlorophyll-a concentrations were 0.02 - 0.05 （ mg/m3 ） , while the appropriate sea surface height anomaly was from 4 cm to 24 cm.
出处
《渔业信息与战略》
2015年第2期119-127,共9页
Fishery Information & Strategy
基金
国家科技支撑计划项目(2013BAD13B01
2013BAD13B06)
上海市自然科学基金(14ZR1449900)
上海市"科技创新行动计划"社会发展领域项目(12231203901)
农业部南海渔业资源开发利用重点实验室开放课题(LSF2012-01)
关键词
长鳍金枪鱼
南太平洋
渔场重心
海洋环境
albacore
South Pacific
fishing ground gravity
marine environment
