温度改变白鲟对模拟垂钓的热耐受性和生理反应。

IF 2.9 2区 生物学 Q2 BIOLOGY
Shasta R. Kamara , Jackson C. Glomb , Cory D. Suski
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引用次数: 0

摘要

全球气候变化导致了许多休闲和商业鱼类的减少。美国白鲟(Polyodon spathula)支持着美国重要的渔业,根据现行的管理规定,它们可以在不同的温度范围内钓鱼和放生。目前,热变化对白鲟的影响尚未确定,这妨碍了管理者做出与钓鱼和收获季节的时间和持续时间相关的热信息决策。因此,我们量化了白鲟在一系列温度下被追逐到筋疲力尽和暴露在空气中的反应。为了做到这一点,幼白鲟被驯化到13、17.5和22°C。然后,鱼进行模拟垂钓互动,并允许恢复0.5小时,4小时或8小时以评估生理参数的恢复情况。运动后,适应温度不同,恢复情况也不同。适应最高温度(22°C)的白鲟血浆乳酸恢复时间较长,而适应较低温度(13.0°C和17.5°C)的白鲟血浆乳酸恢复时间较长。第二组来自不同温度的白鲟进行临界最大热测试(CTmax)。白鲟CTmax受驯化温度的影响,但有一个热上限,当驯化温度高于17.5℃时,白鲟的热耐受性有小幅但不显著的增加。总之,研究结果表明,与温度较低的鱼相比,水温较高的白鲟的表现较差,这表明在17.5°C以上的温度下钓鱼或放生将导致恢复期延长,白鲟适应温度较高的能力可能有限。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Temperature alters thermal tolerance and physiological response to simulated angling in paddlefish
Global climate change has led to the decline of many recreational and commercial fish species. American Paddlefish (Polyodon spathula) support important fisheries across the United States and can experience angling and release across a range of temperatures due to current management regulations. Currently, the impact of thermal variation on paddlefish has not been defined, precluding managers from making thermally-informed decisions related to the timing and duration of angling and harvest seasons. Therefore, we quantified the response of paddlefish chased to exhaustion and air-exposed across a range of temperatures. To accomplish this, juvenile paddlefish were acclimated to 13, 17.5, and 22 °C. Fish were then subjected to a simulated angling interaction and allowed to recover for 0.5 h, 4 h, or 8 h to evaluate recovery of physiological parameters. Following exercise, recovery profiles differed among acclimation temperatures, with paddlefish acclimated to the warmest temperature (22 °C) having prolonged recovery of plasma lactate, compared to fish experiencing cooler temperatures (13.0 °C and 17.5 °C). A second group of paddlefish from each temperature was subjected to a critical thermal maximum test (CTmax). Paddlefish CTmax was influenced by acclimation temperature, but experienced an upper thermal limit, with fish gaining a small but non-significant increase in thermal tolerance when acclimated to temperatures above 17.5 °C. Together, results indicate that paddlefish experiencing warmer water temperatures have reduced performance relative to cooler fish, suggesting that angling or release at temperatures over 17.5 °C will result in an extended recovery period, and paddlefish may have limited capacity for acclimation to warmer temperatures.
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来源期刊
Journal of thermal biology
Journal of thermal biology 生物-动物学
CiteScore
5.30
自引率
7.40%
发文量
196
审稿时长
14.5 weeks
期刊介绍: The Journal of Thermal Biology publishes articles that advance our knowledge on the ways and mechanisms through which temperature affects man and animals. This includes studies of their responses to these effects and on the ecological consequences. Directly relevant to this theme are: • The mechanisms of thermal limitation, heat and cold injury, and the resistance of organisms to extremes of temperature • The mechanisms involved in acclimation, acclimatization and evolutionary adaptation to temperature • Mechanisms underlying the patterns of hibernation, torpor, dormancy, aestivation and diapause • Effects of temperature on reproduction and development, growth, ageing and life-span • Studies on modelling heat transfer between organisms and their environment • The contributions of temperature to effects of climate change on animal species and man • Studies of conservation biology and physiology related to temperature • Behavioural and physiological regulation of body temperature including its pathophysiology and fever • Medical applications of hypo- and hyperthermia Article types: • Original articles • Review articles
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