Either handling or exercise cause an increase in body weight in fish acclimated to fresh water, and a decrease in body weight in fish acclimated to sea water.

Passive integrated transponder (PIT) tagging is a commonly used procedure to identify fish. However, there is a lack of research on the short-term effects of such tagging. The purpose of our study was to measure the short-term effects of PIT tagging on the feeding behavior and swimming performance o...

We investigated the effects of preparing surgical incision sites with a topical antiseptic on wound healing and hematological response in rainbow trout Oncorhynchus mykiss. A povidone–iodine solution was applied both pre- and postsurgery to the incision sites on treated fish. Three-cent...

Effects of growth acceleration on eye development have been examined in genetically modified salmonids. Growth hormone (GH) transgenic coho salmon (Oncorhynchus kisutch (Walbaum, 1792)) show dramatically elevated ove...

A popular part of many athletes pre-game regime is to stretch. We examined whether a pre-injury stretching protocol could prevent acute contraction-induced injury. The in situ extensor digitorum longus (EDL) muscle of an anesthetized mouse (80 mg/kg intra-peritoneal) was used. Damage to the muscle f...

To understand the functional-physiological influences on the depth distribution of deepwater cisco (bloater), Coregonus hoyi, in the Laurentian Great Lakes, we compared their gas bladder anatomy with the putative ancestor, shallowwater cisco, C. artedi, from a shallow inland lake. There were no gene...

Pain is a major sympton in many medical conditions, and often interferes significantly with a person's quality of life. Although a priority topic in medical research for many years, there are still few analgesic drugs approved for clinical use. One reason is the lack of appropriate animal model...

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1. 1.|Decreasing temperature stimuli produced responses and threshold similar to those produced by increasing temperature stimuli in a previous study with skipjack tuna, Katsuwonus pelamis. 2. 2.|Restrained skipjack tuna signaled by deceleration of heart rate that they could perceive abrupt temperat...

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We measured enzyme activities along a heterothermic tissue, the visceral retia mirabilia of the bluefin tuna, to test current theories of enzyme temperature adaptation. The heterothermic tissue model is ideal for the study of fundamental temperature adaptation because it eliminates confounding effec...

Rainbow trout were sprint-trained (30 s duration) once or twice on alternate days for 6 weeks. Swim speed for the first 10 s of a training bout averaged 11.4 body lengths per second (bl/s) for group 2 (trained once) and 10.2 bl/s for group 3 (trained twice). Feed intake, growth rate and conversion e...

Fast-start acceleration performance of rainbow trout (Salmo gairdneri) was measured after 9 weeks of sprint training (30 s duration, every 2nd day). Response latency and time required to complete the first two stages of a fast start were unaffected by the sprint-training protocol. Maximum accelerati...

In mammals, sprint-type exercise protocols induce muscular adaptation different from that caused by endurance training. Although there are many published studies on endurance training in fish, few have examined sprint (anaerobic) training. This study is an examination of whether sprint-training chan...