Using fisher’s knowledge to estimate catch and effort in the large-scale octopus fishery on the eastern Campeche Bank (Mexico, NW Atlantic)

IF 0.8 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Scientia Marina Pub Date : 2022-09-21 DOI:10.3989/scimar.05254.037

Otilio Avendaño, I. Velázquez‐Abunader, F. Rocha, Á. Guerra

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引用次数: 0

Abstract

The Mayan octopus (Octopus maya) and the American octopus (O. americanus) are the two species that support the octopus fishery on the Campeche Bank. The large-scale fleet catches both species. However, landings are recorded as American octopus in the official statistics, and this causes a problem for the management of the fishery. The large-scale octopus fishery on the Campeche Bank was studied using a model based on data from interviews with skippers. A total of 180 valid interviews were conducted in the base ports of Progreso and Yucalpeten (Yucatan), representing 51.1% of the skippers in the fleet in 2019. This information was used for the first time to estimate catch per unit effort (CPUE) and total catches for each octopus species. The mean CPUE ranged between 50 and 500 kg day-1, with minimums of 10 kg day-1. The mean estimated potential catches ranged from 5069 to 3456 t per year for O. maya and from 4113 to 2805 t per year for O. americanus. The relationship between official landings and estimated catches showed a significant correlation (rxy=0.898). The total estimated catches were on average 20% lower than the official landings of O. americanus. The origin of this discrepancy is discussed.

查看原文本刊更多论文

利用渔民的知识估算坎佩切河岸东部(墨西哥，西北大西洋)大规模章鱼渔业的捕鱼量和工作量

玛雅章鱼（octopus maya）和美洲章鱼（O.americanus）是支持坎佩切河岸章鱼渔业的两个物种。大型船队同时捕获这两个物种。然而，在官方统计数据中，登陆的章鱼被记录为美国章鱼，这给渔业管理带来了问题。坎佩切河岸的大型章鱼渔业是使用一个基于船长访谈数据的模型进行研究的。在Progreso和Yucalpeten（尤卡坦）的基地港口共进行了180次有效的采访，占2019年船队船长的51.1%。这一信息首次被用于估计每种章鱼的单位努力渔获量（CPUE）和总渔获量。平均CPUE在第1天50至500公斤之间，最低为第1天10公斤。O的平均估计潜在渔获量为每年5069至3456吨。maya和O。美洲。官方渔获量与估计渔获量之间存在显著相关性（rxy=0.898）。美洲。讨论了这种差异的根源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scientia Marina 生物-海洋与淡水生物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Scientia Marina is the successor to Investigación Pesquera, a journal of marine sciences published since 1955 by the Institut de Ciències del Mar de Barcelona (CSIC). Scientia Marina is included in the Science Citation Index since 1998 and publishes original papers, reviews and comments concerning research in the following fields: Marine Biology and Ecology, Fisheries and Fisheries Ecology, Systematics, Faunistics and Marine Biogeography, Physical Oceanography, Chemical Oceanography, and Marine Geology. Emphasis is placed on articles of an interdisciplinary nature and of general interest.