Effects of post-capture ventilation assistance and elevated water temperature on sockeye salmon in a simulated capture-and-release experiment

被引：33

作者：

Robinson, Kendra A. ^{[1
]}

Hinch, Scott G. ^{[1
]}

Gale, Marika K. ^{[1
]}

Clark, Timothy D. ^{[2
]}

Wilson, Samantha M. ^{[3
,4
]}

Donaldson, Michael R. ^{[1
]}

Farrell, Anthony P. ^{[5
,6
]}

Cooke, Steven J. ^{[3
,4
]}

Patterson, David A. ^{[7
]}

机构：

[1] Univ British Columbia, Dept Forest & Conservat Sci, Pacific Salmon Ecol & Conservat Lab, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada

[2] Australian Inst Marine Sci, Townsville, Qld 4810, Australia

[3] Carleton Univ, Dept Biol, Fish Ecol & Conservat Physiol Lab, Ottawa, ON K1S 5B6, Canada

[4] Carleton Univ, Inst Environm Sci, Ottawa, ON K1S 5B6, Canada

[5] Univ British Columbia, Dept Zool, Vancouver, BC V6T 1Z4, Canada

[6] Univ British Columbia, Fac Land & Food Syst, Vancouver, BC V6T 1Z4, Canada

[7] Simon Fraser Univ, Fisheries & Oceans Canada, Sci Branch, Cooperat Resource Management Inst,Sch Resource &, Burnaby, BC V5A 1S6, Canada

来源：

CONSERVATION PHYSIOLOGY | 2013年 / 1卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Exhaustive exercise; facilitated recovery; fisheries; revival; stress; survival; REPEAT SWIMMING PERFORMANCE; TROUT ONCORHYNCHUS-MYKISS; LOWER FRASER-RIVER; RAINBOW-TROUT; EXHAUSTIVE EXERCISE; MIGRATION MORTALITY; OXYGEN-CONSUMPTION; METABOLIC RECOVERY; FINAL MATURATION; PACIFIC SALMON;

D O I：

10.1093/conphys/cot015

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

The live release of wild adult Pacific salmon (Oncorhynchus spp.) following capture is a management tactic often used in commercial, aboriginal, and recreational fisheries. Fisheries capture and handling can be both exhausting and stressful to fish, which can limit their ability to swim and survive after release. As a result, researchers have assessed methods intended to improve post-release survival by assisting the flow of water over the gills of fish prior to release. Such approaches use recovery bags or boxes that direct water over the gills of restrained fish. This study evaluated a method of assisting ventilation that mimics one often employed by recreational anglers (i.e. holding fish facing into a current). Under laboratory conditions, wild Fraser River sockeye salmon (Oncorhynchus nerka) either received manual ventilation assistance for 1 min using a jet of water focused at the mouth or were left to recover unassisted following a capture-and-release simulation. A control group consisted of fish that were not exposed to the simulation or ventilation assistance. The experiment was conducted at 16 and 21 degrees C, average and peak summer water temperatures for the Fraser River, and fish survival was monitored for 33 days. At 21 degrees C, all fish perished within 3 days after treatment in all experimental groups, highlighting the consequences of handling adult sockeye salmon during elevated migration temperatures. Survival was higher at 16 degrees C, with fish surviving on average 15-20 days after treatment. At 16 degrees C, the capture-and-release simulation and ventilation assistance did not affect the survival of males; however, female survival was poor after the ventilation assistance compared with the unassisted and control groups. Our results suggest that the method of ventilation assistance tested in this study may not enhance the post-release survival of adult Fraser River sockeye salmon migrating in fresh water.

引用

页数：10

共 66 条

[1] Understanding the complexity of catch-and-release in recreational fishing: An integrative synthesis of global knowledge from historical, ethical, social, and biological perspectives [J].