Physiological response of milkfish (Chanos chanos) to capture in a fly fishing catch-and-release recreational fishery

IF 2 3区 农林科学 Q2 FISHERIES
Andy J. Danylchuk, Lucas P. Griffin, Michael Lawrence, Sascha Clark Danylchuk, Eleanor Brighton, Gail Fordham, George Curd, Kyle Simpson, Devan Vd Merwe, Steven J. Cooke
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引用次数: 0

Abstract

Recreational angling for novel marine species and related tourism development can be important in a Blue Economy. The milkfish (Chanos chanos) is growing in popularity as a target of fly fishing-based catch-and-release (C&R) recreational fisheries, largely because of their challenge to catch and powerful swimming abilities, resulting in fight times that can exceed 1 h. Anecdotal sentiments by anglers claim that milkfish can fight for long periods of time because they do not accumulate blood lactate. To test this hypothesis, we measured blood lactate and blood glucose for 21 milkfish caught by fly fishing in the remote Alphonse Group of islands, Republic of Seychelles. Fight times ranged 5–78.3 min. Blood lactate and blood glucose concentrations increased with fight times that did not exceed 60 min. Total length of milkfish was not correlated to blood lactate or blood glucose concentrations. Ours is the first study on C&R of milkfish that debunks the anecdote that milkfish can fight for long periods of time because they do not accumulate blood lactate. Our study also revealed that milkfish may begin to physiologically recover after fight times longer than 60 min. In the context of C&R, our study indicates that anglers should limit fight times to 20–30 min when possible to reduce angling-induced physiological stress and other potential impacts (e.g., depredation) on milkfish in recreational fisheries.

遮目鱼(Chanos Chanos)在飞钓中捕获的生理反应
在蓝色经济中,休闲垂钓新海洋物种和相关的旅游开发可能很重要。遮目鱼(Chanos Chanos)越来越受欢迎,成为以飞钓为基础的休闲渔业的目标,主要是因为它们的捕捉挑战和强大的游泳能力,导致战斗时间可以超过1小时。垂钓者声称遮目鱼可以战斗很长时间,因为它们不积累血乳酸。为了验证这一假设,我们测量了21条遮目鱼的血乳酸和血糖,这些遮目鱼是在塞舌尔共和国偏远的Alphonse群岛上用飞钓捕获的。战斗时间为5-78.3分钟。血乳酸和血糖浓度随战斗时间不超过60分钟而升高。遮目鱼的总长度与血乳酸或血糖浓度无关。我们的研究是第一个关于遮目鱼的C&;R的研究,它揭穿了遮目鱼可以战斗很长时间的传闻,因为它们不积累血乳酸。我们的研究还表明,遮目鱼可能在战斗时间超过60分钟后开始生理恢复。在C&;R的背景下,我们的研究表明,在可能的情况下,垂钓者应将战斗时间限制在20-30分钟,以减少垂钓引起的生理应激和其他潜在影响(例如,捕食)。
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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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