243 research outputs found

    Calming an aggressor through spontaneous post-conflict triadic contacts: appeasement in Macaca tonkeana.

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    Peaceful third-party interventions usually occur after an aggressive encounter and can be directed toward the victim or the aggressor. Macaca tonkeana, a cercopithecine species characterized by high levels of tolerance, frequently engage in consolatory contacts, which both calm the victim and reduce the probability of further attacks against him/her. Other post-conflict affiliative interventions such as reconciliation and quadratic affiliation are also common in this species. However, little attention has been given to contacts directed toward the aggressor. Here,weexplore the role of bystander affiliative interventions toward the aggressor in influencing the affective state of the aggressor and the consequences of triadic interventions at group level. We found that triadic post-conflict affiliation occurred independently from the intensity of the conflict and that it was more frequent in absence of the conciliatory contact between the opponents (reconciliation). Bystanders showed a higher amount of post-conflict affiliation toward low ranking aggressors. Post-conflict triadic affiliation functioned as a tension reduction mechanism by lowering the arousal of the aggressor, which less frequently engaged in renewed aggression. All these findings suggest that post-conflict triadic contacts in Tonkean macaques can be considered as a strategic mechanism to calm the aggressor and reduce the risk of retaliatory aggression

    Chromosome painting reveals that galagos have highly derived karyotypes.

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    Ibridazione di sonde cromosomiche umane su cromosomi di due specie di lemuri, Otolemur crassicaudatus e Galago moholi

    Fish analysis of an unusual sex-chromosome system in howler monkeys (genus Alouatta).

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    Confronto del bandeggio cariotipico di due sottospecie specie di scimmie sudamericane, Alouatta seniculus arctoidea e Alouatta seniculus sara

    Cranial capacity in hominid evolution

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    Analisi della capacità cranica di 118 crani ominidi (appartenenti ai generi Australopithecus e Homo) descritti nella letteratura. Discussione dei possibili modelli evolutivi

    Chromosome painting defines genomic rearrangements between Red Howler monkeys subspecies

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    Ibridazione di sonde cromosomiche umane sui cromosomi di due sottospecie di Alouatta seniculus: Alouatta seniculus sara e Alouatta seniculus arctoidea. Presentazione e discussione dei risultati

    Chromosome painting defines genomic rearrangements between Red Howler monkey subspecies.

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    Ibridazione di sonde cromosomiche umane su cromosomi di due sottospecie della scimmia del Nuovo Mondo Alouatta seniculus

    Fluorescence in situ hybridization (FISH) maps chromosomal homologies between the dusky titi and squirrel monkey.

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    Ibridazione di sonde cromosomiche umane sul cariotipo di due specie di scimmie del Nuovo Mondo: Callicebus moloch e Saimiri sciureus
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