DISTRIBUTION AND PHENOTYPIC CORRELATES OF VARIATION AT ENZYME CODING LOCI IN RAINBOW-TROUT (ONCORHYNCHUS-MYKISS) FROM THE LOWER LAURENTIAN GREAT-LAKES

被引:8
作者
FERGUSON, MM [1 ]
IHSSEN, PE [1 ]
机构
[1] ONTARIO MINIST NAT RESOURCES, FISHERIES BRANCH, RES SECT, MAPLE L6A 1S9, ONTARIO, CANADA
关键词
D O I
10.1139/f91-157
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The distribution of variation at 37 enzyme coding loci was determined in six samples of rainbow trout (Oncorhynchus mykiss) from hatchery and natural sources. Significant heterogeneity in allele frequencies was detected among samples of Lower Laurentian Great Lakes rainbow trout. Geographical proximity was a poor predictor of genetic similarity among samples. The adaptive significance of two loci was examined in 16 experimental families. Rainbow trout homozygous for an allele at a phosphoglucomutase structural gene (Pgm 1-s), which results in no detectable activity of phosphoglucomutase (PGM1) in all tissues where this locus is normally expressed (e.g. muscle), were larger than those heterozygous or homozygous for the active allele. However, no significant differences in asymmetry of four bilateral meristic traits were detected between fish with different PGM1 phenotypes. Rainbow trout with PGM1 in liver because of a regulatory gene, Pgm1-t(b), were marginally larger than those without the allele. These data suggest a correlation between biochemical genetic variation and phenotypic characteristics associated with fitness.
引用
收藏
页码:1308 / 1315
页数:8
相关论文
共 31 条
[1]   ADAPTIVE SIGNIFICANCE OF DIFFERENCES IN THE TISSUE-SPECIFIC EXPRESSION OF A PHOSPHOGLUCOMUTASE GENE IN RAINBOW-TROUT [J].
ALLENDORF, FW ;
KNUDSEN, KL ;
LEARY, RF .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES, 1983, 80 (05) :1397-1400
[2]  
ALLENDORF FW, 1977, HEREDITAS, V86, P179
[3]  
ALLENDORF FW, 1982, GENETICS, V102, P259
[4]  
ALLENDORF FW, 1984, MOL BIOL EVOL, V1, P238
[5]  
Allendorf FW, 1987, POPULATION GENETICS, P141, DOI DOI 10.1007/978-1-4020-6148-6_8
[6]  
ARNOSON MA, 1985, THESIS U MONTANA MIS
[7]  
DANZMANN RG, 1986, EVOLUTION, V40, P86, DOI 10.1111/j.1558-5646.1986.tb05720.x
[8]   DOES ENZYME HETEROZYGOSITY INFLUENCE DEVELOPMENTAL RATE IN RAINBOW-TROUT [J].
DANZMANN, RG ;
FERGUSON, MM ;
ALLENDORF, FW .
HEREDITY, 1986, 56 :417-425
[9]   ADAPTIVE SIGNIFICANCE OF DEVELOPMENTAL RATE IN RAINBOW-TROUT - AN EXPERIMENTAL TEST [J].
FERGUSON, MM ;
DANZMANN, RG ;
ALLENDORF, FW .
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, 1988, 33 (03) :205-216
[10]   METABOLIC EFFECTS OF THE EXPRESSION OF A PHOSPHOGLUCOMUTASE LOCUS IN THE LIVER OF RAINBOW-TROUT [J].
FERGUSON, MM ;
DANZMANN, RG ;
ALLENDORF, FW ;
KNUDSEN, KL .
CANADIAN JOURNAL OF ZOOLOGY, 1990, 68 (07) :1499-1504