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A search for gametic disequilibrium in the plaice, Pleuronectes platessa
Ward, R.D.; McAndrew, B.J. (1985). A search for gametic disequilibrium in the plaice, Pleuronectes platessa. Heredity 55(1): 105-110
In: Heredity. The Genetical Society of Great Britain: London. ISSN 0018-067X, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Ward, R.D.
  • McAndrew, B.J.

Abstract
    Large samples of a natural population of the plaice (P. platessa) were examined for evidence of gametic disequilibrium (D) at five and seven polymorphic enzyme loci (younger and older fish respectively). A single pairwise locus comparison gave a statistically significant value for D: alpha Gpdh -1 and Pgi -2 in young fish. The mean D values of the 10 pairwise comparisons of the five loci in young and old fish were low, 0.00175 and 0.00420 respectively: corresponding values of R (the correlation of gene frequencies) were 0.01473 and 0.03002. The increase in these parameters in older fish might be due either to population admixture, natural selection, a smaller sample size, or to a combination of these factors. The mean D and R values for the 21 pairwise comparisons of the seven loci typed in older fish were 0 multiplied by 00394 and 0 multiplied by 02496 respectively. Two loci catalysing adjacent steps in the glycolytic pathway, Pgm -1 and Pgi -2, showed no evidence of epistatic interactions generating disequilibrium.

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