Block B A, Dewar H, Farwell C, Prince E D
Stanford University, Hopkins Marine Station, Oceanview Boulevard, Pacific Grove, CA 93950, USA.
Proc Natl Acad Sci U S A. 1998 Aug 4;95(16):9384-9. doi: 10.1073/pnas.95.16.9384.
The movements of Atlantic bluefin tuna (Thunnus thynnus thynnus) have captured the interest of scientists and fishers since the time of Aristotle. This tuna is unique among bony fish for maintaining elevated body temperatures (21 degrees C above ambient) and attaining large size (up to 750 kg). We describe here the use of a pop-off satellite tag, for investigating the Atlantic-wide movements and potential stock overlap of western and eastern Atlantic bluefin tuna. The tag also archives data on water temperatures. The objectives of this study were to evaluate the effectiveness of the technology, study the movements of Atlantic bluefin tuna, examine their thermal niche, and assess survivorship of tagged fish. The pop-off satellite technology provides data independent of commercial fisheries that, when deployed in sufficient quantity, should permit a critical test of the stock structure hypotheses for Atlantic bluefin tuna.
自亚里士多德时代起,大西洋蓝鳍金枪鱼(Thunnus thynnus thynnus)的活动就引起了科学家和渔民的关注。这种金枪鱼在硬骨鱼中独一无二,能够维持较高的体温(比周围环境高21摄氏度)并长到很大的体型(重达750千克)。我们在此描述了一种弹出式卫星标签的使用情况,用于研究大西洋范围内西部和东部大西洋蓝鳍金枪鱼的活动以及潜在的种群重叠情况。该标签还会存档水温数据。本研究的目的是评估该技术的有效性,研究大西洋蓝鳍金枪鱼的活动,考察它们的热生态位,并评估被标记鱼的存活率。弹出式卫星技术提供独立于商业渔业的数据,当大量部署时,应该能够对大西洋蓝鳍金枪鱼的种群结构假说进行关键检验。