The burrowing larvae of the brook lamprey Lampetra planeri (Bloch) were shown by discriminant analysis to inhabit stream sites having certain qualities. Although a few larvae occurred in far-from-optimal habitats, most larvae selected those with low current velocity, low water depth, a low number of
Records of Brook Lampreys Lampetra planeri (Bloch) in the Silvermines Area, Co Tipperary
β Scribed by Juliet McCarthy and John Breen
- Book ID
- 124209839
- Publisher
- Irish Naturalists Journal Ltd.
- Year
- 2005
- Weight
- 296 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0021-1311
- DOI
- 10.2307/25536622
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A natural population of the brook lamprey, Lampetra planeri, was assayed for electrophoretically detectable variation at 30 enzyme loci. The mean heterozygosity per locus of this primitive vertebrate, a member of the Agnatha, was found to be 0.076 & 0.031, a value similar to those recorded for other
Genetic evidence for a trimeric structure for purine nucleoside phosphorylase in the brook lamprey is presented. This enzyme is encoded by a single locus with two alleles segregating at frequencies of 0.98 and 0.02 in a Welsh population. It is suggested that this enzyme is likely to be a trimer in a