Michael J. Mac
1985
<p><span>I tested the effects of different ration sizes on preferred temperatures of yearling lake charr,</span><i class="EmphasisTypeItalic ">Salvelinus namaycush</i><span>, by feeding them for about 2 weeks on one of four rations and then allowing them to thermoregulate in a temporal thermal gradient for 2 to 3 days. Selected temperatures and ration were directly and linearly correlated: the larger the ration, the higher the temperature selected. Mean preferred temperatures at different rations (shown in parentheses as percent of body weight per day) were as follows: 9.2°C (0.3); 10.6°C (0.8); 11.7°C (2.0); and 12.6°C (5.5). While the shift to lower temperature, under restricted ration, would maximize food conversion efficiency, previous growth studies indicate that even lower selected temperature would have been more beneficial.</span></p>
application/pdf
10.1007/BF00000830
en
Springer
Effects of ration size on preferred temperature of lake charr <i>Salvelinus namaycush</i>
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