从长度-频率数据估计黄鳍金枪鱼生长参数的精度

IF 2 3区 农林科学 Q2 FISHERIES
Wiwiet Teguh Taufani, Takashi Fritz Matsuishi
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引用次数: 0

摘要

全球60%以上的鱼类资源数据有限,妨碍了有效的渔业管理。研究人员利用长度-频率数据为数据有限的渔业开发了种群评估方法,但可靠性有问题,而且没有得到充分研究。我们利用14,190条黄鳍金枪鱼个体24个月的长度-频率数据以及序列和区间数据分数,评估了广泛使用的基于长度的ELEFAN方法的精度。使用bootstrapping(1000次)和数据约简,估计了生长参数和精度L∞,K和Φ '。L∞、K和Φ’的cv值分别为2.55%、23.04%和2.35%。从数据缩减的结果来看,建议至少1或2个月测量一次,平均每次测量12次,每次测量500个数据,以获得较高的精度,CV为Φ ' < 3%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Precision of Estimated Growth Parameters of Yellowfin Tuna (Thunnus albacares) From Length-Frequency Data Estimated by Bootstrapping

Over 60% of the world's fish stocks suffer from limited data, which hampers effective fisheries management. Researchers have developed stock assessment methods for data-limited fisheries using length-frequency data, but reliability was questionable and not well researched. We evaluated the precision of the widely used length-based method ELEFAN using 24 months of length-frequency data from 14,190 individual yellowfin tuna and sequential and interval data fractions. Using bootstrapping (1000 times) and data reduction, growth parameters and precision L , K , and Φ′ were estimated. The CVs of L , K , and Φ′ were 2.55%, 23.04%, and 2.35%, respectively. From the result of data reduction, at least once in 1 or 2 months and 12 times measurements with 500 data per measurement on average is recommended for achieving high precision with CV of Φ′ < 3%.

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来源期刊
Fisheries Management and Ecology
Fisheries Management and Ecology 农林科学-渔业
CiteScore
3.80
自引率
5.00%
发文量
77
审稿时长
12-24 weeks
期刊介绍: Fisheries Management and Ecology is a journal with an international perspective. It presents papers that cover all aspects of the management, ecology and conservation of inland, estuarine and coastal fisheries. The Journal aims to: foster an understanding of the maintenance, development and management of the conditions under which fish populations and communities thrive, and how they and their habitat can be conserved and enhanced; promote a thorough understanding of the dual nature of fisheries as valuable resources exploited for food, recreational and commercial purposes and as pivotal indicators of aquatic habitat quality and conservation status; help fisheries managers focus upon policy, management, operational, conservation and ecological issues; assist fisheries ecologists become more aware of the needs of managers for information, techniques, tools and concepts; integrate ecological studies with all aspects of management; ensure that the conservation of fisheries and their environments is a recurring theme in fisheries and aquatic management.
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