Life history and stock synthesis assessment of Prionotus punctatus (Teleostei, Triglidae) in southern Brazil

IF 2 3区农林科学 Q2 FISHERIES

Fisheries Management and Ecology Pub Date : 2023-05-12 DOI:10.1111/fme.12631

Andrea Renata Rodriguez, Manuel Haimovici, Eidi Kikuchi, Rodrigo Sant'Ana, Bruno L. Mourato, Jose Angel Alvarez Perez, Luís Gustavo Cardoso

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引用次数: 2

Abstract

Age, growth, and maturity of the bluewing searobin Prionotus punctatus were studied to assess its stock status in southern Brazil. Total length compositions, weight, sex, and maturity stage were recorded from commercial landings, and ages were estimated from transverse sections of the sagittal otolith. The oldest observed specimen was a 12-year-old female. Females grew to a larger asymptotic length (L_∞ = 384.4 mm) than males (L_∞ = 311.7 mm) but at a slower instantaneous rate (k_females = 0.41 year⁻¹, k_males = 0.75 year⁻¹). Reproduction occurred from spring to early fall. Females size- and age-at-maturity was estimated at 246.8 mm and 1.66 years, while males were at 237.2 mm and 1.38 years. Based on a statistical catch-at-age stock assessment, the spawning biomass declined 84% from 1976 to 2000 being classified as overfished and suffering from overfishing (B/B_msy = 0.62; F/_Fmsy >1). P. punctatus was regularly discarded by industrial fisheries before 2000 but suffered from high exploitation in the last decades. These results highlight the need for the species to be included in Brazil's fishery management plans.

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巴西南部斑点Prionotus (Teleostei, Triglidae)生活史及种群综合评价

研究了巴西南部蓝翅海带斑纹Prionotus punctatus的年龄、生长和成熟度，以评估其种群状况。从商业着陆记录了总长度组成、体重、性别和成熟期，并从矢状耳石的横切面估计了年龄。观察到的年龄最大的标本是一只12岁的雌性。雌性的渐近长度(L∞= 384.4 mm)大于雄性(L∞= 311.7 mm)，但瞬时生长速度较慢(k雌性= 0.41 year−1,k雄性= 0.75 year−1)。繁殖发生在春季到初秋。雌性的体型和成熟年龄估计为246.8毫米和1.66岁，而雄性为237.2毫米和1.38岁。根据年龄渔获量统计评估，1976 - 2000年产卵生物量下降了84%，被归类为过度捕捞和遭受过度捕捞(B/Bmsy = 0.62;F / Fmsy祝辞1)。在2000年之前，斑马鱼经常被工业渔业丢弃，但在过去的几十年里遭受了大量的捕捞。这些结果强调了将该物种纳入巴西渔业管理计划的必要性。

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来源期刊

Fisheries Management and Ecology 农林科学-渔业

CiteScore

3.80

自引率

5.00%

发文量

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.