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Purdom, C E, Thompson, D and Dando, P R 1976 Genetic analysis of enzyme polymorphisms in plaice (Pleuronectes platessa). Heredity, 37 (2). 193-206. https://doi.org/10.1038/hdy.1976.82
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Abstract/Summary
Genetic analysis was performed on five enzyme systems (G3PDH; GPI-A; GPI-B; PGM; MDH-A) in plaice (Pleuronectes platessa) collected in spawning condition from the North Sea. Conventional crosses, induced gynogenesis and induced triploidy were performed. The data conclusively demonstrated the inheritance of isozymes by co-dominant alleles at individual loci for each system. No linkage was observed but tests did not include MDH nor the possibility of linkage between G3PDH and GPI-A. Some anomalous segregation ratios were observed, particularly a deficiency of heterozygotes for GPI-A, but the data were largely in conformity with Mendelian expectations. At the PGM locus, five independent anomalous individuals were scored and interpreted as mutations with a mutation rate of 1·1 × 10−3 per gamete. Recombination with the centromere was assessed and induced triploidy and cross-over values of 41 per cent for PGM, 19 per cent for MDH-A and 9 per cent for GPI-B were derived on the assumption of complete interference. Amongst the parent fish, genotypic and phenotypic frequencies were largely consistent with the expectations of the Hardy-Weinberg Law, and allelic frequencies were not significantly different between year of collection or location of collection ground.
| Item Type: | Publication - Article |
|---|---|
| Subjects: | Aquaculture Fisheries Marine Sciences Zoology |
| Divisions: | Marine Biological Association of the UK > Other (MBA) |
| Depositing User: | Professor Paul Dando |
| Date made live: | 06 Jan 2022 12:48 |
| Last Modified: | 06 Jan 2022 12:48 |
| URI: | https://plymsea.ac.uk/id/eprint/9498 |
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