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With a few rare exceptions, the vast majority of animals reproduce sexually. Some species have, however, evolved alternative modes of reproduction by shifting from classical bisexuality to unorthodox reproductive systems, like parthenogenesis, gynogenesis, or hybridogenesis. Under hybridogenesis, both the maternal and paternal genomes are expressed in(More)
Chemical communication is widespread in insects and is crucial for colony organization in social species [1]. The environment and the signal requirements influence the chemical characteristics of the pheromone employed [1]. Highly volatile substances elicit rapid responses, as in alarm signalling, whereas low volatility compounds provide long-lasting cues(More)
Social isolation provides a useful tool to study nestmate recognition in ants. In Camponotus fellah, reintroduction of 10-day isolated (IS) workers to their colony resulted in intensive trophallaxis and grooming, while longer isolation periods generally provoked rejection of the IS ants. In the first experiment the behaviour of queenless (QL) and queenright(More)
Many studies have focused on the impacts of climate change on biological assemblages, yet little is known about how climate interacts with other major anthropogenic influences on biodiversity, such as habitat disturbance. Using a unique global database of 1128 local ant assemblages, we examined whether climate mediates the effects of habitat disturbance on(More)
Multiple behavioral and chemical studies indicate that ant nestmate recognition cues are low-volatile substances, in particular hydrocarbons (HCs) located on the cuticular surface. We tested the hypothesis that in the ant Camponotus fellah, nest environment, in particular nest volatile odors, can modulate nestmate-recognition-mediated aggression. Workers(More)
The inducible peroxisomal enzyme Acyl CoA Oxidase (AOX) catalyzes the initial step in the beta-oxidation of long chain fatty acids in many organisms including yeasts and mammals (1). The non-pathogenic yeast, Candida maltosa (ATCC 20184), is a useful organism for industrial purposes mainly for its production of single cell protein and its ability to grow on(More)
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