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Biological invasions are among key factors of ecological changes, and social insects appear as highly successful invasive animals. Subterranean termites of the holarctic genus Reticulitermes are present in Europe with six native and one invasive (the nearctic R. flavipes) species. The species R. urbis shows a disjunct distribution in the Western Balkans, Eastern Italy and Southern France. Previous...
Nestmate recognition is a common phenomenon in social insects that typically is mediated by cuticular hydrocarbons. Geographical variation in cuticular hydrocarbons has been observed, although the pattern of variation is not consistent across species and is usually related to the biology and ecology of the different species. Polistes biglumis (Hymenoptera: Vespidae) is a social wasp that lives in...
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