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- Merilä, Juha, et al.
(author)
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Antagonistic natural selection revealed by molecular sex identification of nestling collared flycatchers
- 1997
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In: Molecular Ecology. - 0962-1083 .- 1365-294X. ; 6:12, s. 1167-1175
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Journal article (peer-reviewed)abstract
- Natural selection may act in different directions during different life-history stages, or in different directions on different classes of individuals. Antagonistic selection of this kind may be an important mechanism by which additive genetic variation for quantitative traits is maintained, and can prevent populations or species reaching local adaptive peaks. This paper reports the results of a study of viability selection on morphological traits of nestling collared flycatchers Ficedula albicollis. Analyses performed without knowledge of the sex of nestlings suggested that no selection was occurring on these traits. However, using molecular sex identification with the avian CHD gene, it is shown that selection acts in different directions on male and female body size from fledging to breeding, apparently favouring relatively small males and large females. The results suggest that differential selection on male and female nestlings may contribute to purely phenotypic sexual size dimorphism in this species. These findings highlight the potential of newly developed molecular sexing techniques to reveal the consequences of an individual's gender for many aspects of its life history in taxa where gender cannot be determined on the basis of external appearance.
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| 7. |
- Paxton, RJ, et al.
(author)
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Mating structure and nestmate relatedness in a communal bee, Andrena jacobi (Hymenoptera, Andrenidae), using microsatellites
- 1996
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In: MOLECULAR ECOLOGY. - : BLACKWELL SCIENCE LTD. - 0962-1083. ; 5:4, s. 511-519
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Journal article (peer-reviewed)abstract
- Complex eusocial insect societies are generally matrifilial, suggesting kin selection has been of importance in their development. For simpler social systems, factors favouring their existence, in particular kin selection, have rarely been studied. Commun
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| 8. |
- Thulin, CG, et al.
(author)
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The occurrence of mountain hare mitochondrial DNA in wild brown hares
- 1997
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In: MOLECULAR ECOLOGY. - : BLACKWELL SCIENCE LTD. - 0962-1083. ; 6:5, s. 463-467
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Journal article (other academic/artistic)abstract
- If interspecific hybrids are fertile and backcross to either parental species, transmission of mitochondrial DNA over the species barrier can occur. To investigate if such transmission has occurred between the brown hare Lepus europeus Pall and the mounta
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| 9. |
- Vila, C, et al.
(author)
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Mitochondrial DNA phylogeography and population history of the grey wolf Canis lupus
- 1999
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In: MOLECULAR ECOLOGY. - : BLACKWELL SCIENCE LTD. - 0962-1083. ; 8:12, s. 2089-2103
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Journal article (peer-reviewed)abstract
- The grey wolf (Canis lupus) and coyote (C. latrans) are highly mobile carnivores that disperse over great distances in search of territories and mates. Previous genetic studies have shown little geographical structure in either species. However, populatio
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| 10. |
- Villesen, P, et al.
(author)
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Evolutionary transition from single to multiple mating in fungus-growing ants
- 1999
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In: MOLECULAR ECOLOGY. - : BLACKWELL SCIENCE LTD. - 0962-1083. ; 8:11, s. 1819-1825
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Journal article (peer-reviewed)abstract
- Queens of leaf cutter ants exhibit the highest known levels of multiple mating (up to 10 mates per queen) among ants. Multiple mating may have been selected to increase genetic diversity among nestmate workers, which is hypothesized to be critical in soci
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