Genetic analysis of sneaking and egg-thievery in a natural population of the three-spined stickleback (Gasterosteus aculeatus L.)

Article Abstract:

Egg-thievery and sneaking, that is, nest raiding, in a natural population of three-spined sticklebacks, a species in which the males take over parental care, is considered from the genetic perspective. A high frequency of genetically successful nest raiding was seen. Positive correlation was seen between reproductive success and male body size.

Switzerland, Fishes, Three-spined stickleback

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Complex determination of queen body size in the queen size dimorphic ant Leptothorax regatulus (Formicidae: Hymenoptera)

Article Abstract:

Causes of queen size dimorphism of the Leptothorax fugatuus ant have been studied in the first work on ant to find the heritability of quantitative traits in a quantitative genetic framework in a formal way. A positive scenario for evolutionary maintenance in the species is suggested.

Ants, Insect societies

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Recurrent polyploid origins and chloroplast phylogeography in the Arabis holboellii complex (Brassicaceae)

Article Abstract:

Biogeographical patterns of polyploidy in the Aarabis holboellii complex is discussed. It appears the complex has a predisposition to evolve apomictic reproduction.

Usage, Observations, Chloroplasts, Cladistic analysis, Brassica, Apomixis, Biogeography, Aneuploidy, Haplotypes, Plant asexual reproduction

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