数据有限的渔业评估方法揭示了华盛顿普吉特湾列入《濒危物种法》的黄颡鱼的开发历史和种群动态

IF 1.8 3区 农林科学 Q2 FISHERIES Marine and Coastal Fisheries Pub Date : 2023-09-13 DOI:10.1002/mcf2.10251
Markus A. Min, Jason Cope, Dayv Lowry, James Selleck, Daniel Tonnes, Kelly Andrews, Robert Pacunski, Andrea Hennings, Mark D. Scheuerell
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引用次数: 0

摘要

目的2010年,美国国家海洋和大气管理局渔业局根据《濒危物种法》(ESA)对普吉特湾/乔治亚盆地黄颡鱼的不同种群分段(DPS)进行了登记,并于2017年发布了正式的DPS恢复计划。在该恢复计划中,除名或下线的生物学标准被指定为一定水平的产卵潜力比,这是商业开发鱼类平衡种群状况的常用指标。尽管这一指标可以根据长度组成进行估计,但长度数据与捕捞历史的结合(这在以前是不可用于该DPS的)提高了我们对种群动态的理解,并使我们能够估计种群状态的不同衡量标准,相对于(相对于未捕捞的)产卵种群生物量(SSB),方法为了估计相对SSB并重建该DPS的历史动态,我们从渔业记录中重建了捕获历史,整理了历史和当代钩线调查的长度数据,并拟合了年龄捕获量统计模型的数据有限版本。结果尽管存在高度的不确定性,但我们估计,在确定性补充的假设下,普吉特湾的Yelloweye Rockfish超过了未捕捞生物量的25%(回收标准中详细说明的参考点),首次直接估计了普吉特湾的Yelloweye Rockfish种群状况。结论然而,根据最近的基因研究,欧空局列出的Yelloweye Rockfish的DPS边界从南普吉特湾延伸到不列颠哥伦比亚省的夏洛特女王海峡。加拿大部分人口是单独管理的,目前估计为未砍伐生物量的32%(95%分位数 = 15%–68%)。因此,人口的生物边界与加拿大和美国之间的管辖边界之间的脱节,为评估复苏带来了额外的不确定性,必须解决这一问题,以实现DPS范围内的复苏目标。
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Data-limited fishery assessment methods shed light on the exploitation history and population dynamics of Endangered Species Act-listed Yelloweye Rockfish in Puget Sound, Washington

Objective

The distinct population segment (DPS) of Yelloweye Rockfish Sebastes ruberrimus inhabiting the Puget Sound/Georgia Basin was listed under the Endangered Species Act (ESA) in 2010, and a formal recovery plan for the DPS was published by National Oceanic and Atmospheric Administration Fisheries in 2017. In this recovery plan, the biological criteria for delisting or downlisting were specified as certain levels of spawning potential ratio (SPR), a commonly used metric of equilibrium stock status for commercially exploited fishes. Although this metric can be estimated from length compositions, the combination of length data with a catch history (which was not previously available for this DPS) improves our understanding of population dynamics over time and allows us to estimate a different measure of stock status, relative (to unfished) spawning stock biomass (SSB), rather than only SPR.

Methods

To estimate relative SSB and reconstruct the historical dynamics of this DPS, we reconstructed the catch history from fisheries records, collated length data from historical and contemporary hook-and-line surveys, and fitted a data-limited version of a statistical catch-at-age model.

Result

Despite a high level of uncertainty, we estimated that Yelloweye Rockfish in Puget Sound are above 25% of unfished biomass (a reference point detailed in the recovery criteria) under the assumption of deterministic recruitment, presenting the first direct estimates of Yelloweye Rockfish population status in Puget Sound.

Conclusion

However, as informed by recent genetic studies, the DPS boundaries of ESA-listed Yelloweye Rockfish extend from South Puget Sound to Queen Charlotte Strait in British Columbia. The Canadian portion of this population is managed separately and is currently estimated to be at 32% of unfished biomass (95% quantiles = 15%–68%). Thus, the disjunction between the biological boundaries of the population and the jurisdictional boundaries between Canada and the United States presents an additional source of uncertainty in assessing recovery that must be addressed to achieve DPS-wide recovery goals.

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来源期刊
Marine and Coastal Fisheries
Marine and Coastal Fisheries FISHERIES-MARINE & FRESHWATER BIOLOGY
CiteScore
3.40
自引率
5.90%
发文量
40
审稿时长
>12 weeks
期刊介绍: Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science publishes original and innovative research that synthesizes information on biological organization across spatial and temporal scales to promote ecologically sound fisheries science and management. This open-access, online journal published by the American Fisheries Society provides an international venue for studies of marine, coastal, and estuarine fisheries, with emphasis on species'' performance and responses to perturbations in their environment, and promotes the development of ecosystem-based fisheries science and management.
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