Effect of rearing density on the early growth and variation in growth of juvenile Arctic charr, Salvelinus alpinus (L.) |
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| Authors: | M H PAPST T A DICK A N ARNASON C E ENGEL |
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| Institution: | Freshwater Institute, Department of Fisheries and Oceans, Winnipeg, Manitoba, Canada;Department of Zoology, University of Manitoba, Winnipeg, Manitoba, Canada;Department of Computer Science, University of Manitoba, Winnipeg, Manitoba, Canada;Freshwater Institute, Department of Fisheries and Oceans, Winnipeg, Manitoba, Canada |
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| Abstract: | Abstract. Arctic charr, Salvelinus alpinus (L.), from the same full-sib family were reared under two different densities for 97days at 10°C. In one treatment density was adjusted every 2 weeks by means of a tank enclosure to a density of 50kg/m3. In the other treatment the density was allowed to increase as fish biomass increased to 50kg/m3. Density had no significant effect on the variation observed in individual fish weights over the course of the growth trial. Density had a significant effect on the relationship between fish weight and specific growth rate. The increasing density treatment had an overall higher mean specific growth rate of 0·1%/day. |
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