The effects of ecological differences on the amount of enzyme gene variation in Finnish water-strider (Gerris) species
| Autor: | Sirkka-Liisa Varvio-Aho |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
Enzyme Gene 0303 health sciences Ecology food and beverages General Medicine Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Variation (linguistics) Gerris Effective population size Habitat Genetics Local population 030304 developmental biology |
| Zdroj: | Hereditas. 94:35-39 |
| ISSN: | 0018-0661 |
| Popis: | Enzyme gene variation in eight of the nine Finnish Gerris Fabr. species was studied. The species can be classified according to various ecological characters which can serve as explanations for the classification based on the levels of enzyme gene variation. These explanations rest on the basic assumption that the enzyme genic variation is adaptively mainly neutral. The level of genie variation does not correlate with local population sizes, but correlates clearly with effective population sizes, which can qualitatively be estimated on the basis of dispersion efficiencies, abundances and habitat stabilities of the species. The two common and abundant species are much more variable than the others, which are more or less rare. One species is completely invariable at all loci studied; this is the rarest species studied and also the only species which completely lacks flight ability. |
| Databáze: | OpenAIRE |
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