Abstract
We studied the growth properties of three different hemoglobin genotypes of juvenile turbot (Scophthalmus maximus) reared at 10, 14, 18 and 22 °C. The genotype Hb-I(2/2) displayed the overall highest growth rate in the temperature range 14–22 °C, whereas no differences were found at sub-optimal temperature (10 °C). The differences in growth were largest at optimal temperatures where the Hb-I(2/2) genotype displayed 13% higher growth than the two other genotypes. Optimal temperature for growth (T opt.G) varied between the genotypes with the genotype Hb-I(2/2) displaying the highest T opt.G (23.0 °C) and Hb-I(1/1) the lowest (19.0 °C). The biological significance of this link between biochemical genetic variation and physiological properties might be influences on growth pattern, ultimate size and age at first maturity. This is the first reported quantitative trait locus (QTL) for this species.
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Imsland, A., Foss, A., Stefansson, S. et al. Hemoglobin genotypes of turbot (Scophthalmus maximus): consequences for growth and variations in optimal temperature for growth. Fish Physiology and Biochemistry 23, 75–81 (2000). https://doi.org/10.1023/A:1007815402911
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DOI: https://doi.org/10.1023/A:1007815402911
- genotypic growth
- hemoglobin genotypes
- optimal temperature
- quantitative trait locus (QTL)