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No reproductive fitness benefits of dear enemy behaviour in a territorial songbird
AbstractTerritorial animals often respond less aggressively to neighbours than strangers. This ‘dear enemy’ effect is hypothesized to be adaptive by...
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Facultative interspecific brood parasitism in tits: a last resort to co** with nest-hole shortage
We studied the occurrence of facultative interspecific brood parasitism (eggs from two species incubated by a single female) in two bird species, the...
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Is multiple nest building an adequate strategy to cope with inter-species nest usurpation?
BackgroundBlack sparrowhawks (Accipiter melanoleucus) recently colonised the Cape Peninsula, South Africa, where the species faces competition for...
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Ontogeny of Nestmate Recognition in Social Hymenoptera
The ability to discriminate between friends and foes is a central feature of social life. In social insects, nestmate recognition is mediated by...
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Visual Recognition in Social Wasps
Social recognition, i.e. the ability to recognize and assign individual membership to a particular and relevant class, such as caste, dominance...
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Bright turquoise as an intraspecific signal in the chameleon grasshopper (Kosciuscola tristis)
Bright colours often communicate important information between conspecifics. In sexually dichromatic species where males exhibit bright colours, two...
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Social Communication
This chapter looks at the main aspects of social communication in Hover Wasp colonies according to the social context in which information is...
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Colony kin structure and breeding patterns in the social wasp, Polistes biglumis
We used DNA microsatellites to study colony kin structure and breeding patterns in the primitively eusocial wasp Polistes biglumis . P. biglumis ...
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Interspecific interactions of the critically endangered Forest Owlet (Athene blewitti)
The Forest Owlet ( Athene blewitti ) is critically endangered and at extremely high risk of extinction owing to its restricted distribution. An...
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Group nesting and individual variation in behavior and physiology in the orchid bee Euglossa nigropilosa Moure (Hymenoptera, Apidae)
The Euglossini are a key group for studying the traits that promote or hinder highly social behavior in bees because it is the only tribe in the...
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Odour transfer in stingless bee marmelada (Frieseomelitta varia) demonstrates that entrance guards use an “undesirable–absent” recognition system
In group-level recognition, discriminators use sensory information to distinguish group members and non-members. For example, entrance guards in...
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Is big the best? Queen size, usurpation and nest closure in a primitively eusocial sweat bee (Lasioglossum malachurum)
For primitively eusocial insects in which a single foundress establishes a nest at the start of the colony cycle, the solitary provisioning phase...
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Morpho-functional comparison of the Dufour gland in the female castes of the Amazon ant Polyergus rufescens (Hymenoptera, Formicidae)
The Dufour gland is crucially involved in main aspects of the parasite habit of the slave-making ant Polyergus rufescens , i.e. slave-raids and host...
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Philopatry, nest choice, and aggregation temporal–spatial change in the digger wasp Cerceris arenaria (Hymenoptera: Crabronidae)
Studying temporal and spatial changes of aggregations of digger wasps through nesting seasons is interesting because of its link to social evolution...
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Contextual Factors Meditating Contests Between Male Chacma Baboons in Botswana: Effects of Food, Friends and Females
We examined aggressive displays among male chacma baboons ( Papio ursinus ) over a 23-mo period in the Okavango Delta of Botswana. High-ranking males...
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Social parasitism of Polistes dominulus by Polistes nimphus (Hymenoptera, Vespidae)
Interspecific facultative social parasitism is well known in ants and in bumble-bees, but it is rarer in wasps. This form of parasitism is...
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Mandible associated glands in queens of the slave-making ant Polyergus rufescens (Hymenoptera, Formicidae)
A first description of the structural organization of two exocrine glands associated with the mandibles of queens of the obligatory slave-making ant Po...
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The ontogeny of territoriality during maturation
Territoriality drives the evolution of many mating systems, yet has remained an extremely difficult trait to measure in the wild. Classic studies...
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Comparison of reproductive strategies and raiding behaviour in facultative and obligatory slave-making ants: the case of Formica sanguinea and Polyergus rufescens
A review of field and laboratory research concerning raiding behaviour, mating strategies and colony founding in Formica sanguinea and Polyergus...
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Runaway social games, genetic cycles driven by alternative male and female strategies, and the origin of morphs
Analysis of evolutionarily stable strategies (ESS) and decade-long field studies indicate that two color morphs of female side-blotched lizards...