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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

SAME-SEX MOUNTING BEHAVIOR BETWEEN JUVENILES AND ADULT MALES OF THE WHITE-BEARDED MANAKIN (MANACUS MANACUS)

Autor(es):
Cestari, Cesar
Número total de Autores: 1
Tipo de documento: Artigo Científico
Fonte: Ornitologia Neotropical; v. 28, p. 277-280, 2017.
Citações Web of Science: 1
Resumo

Adult males of lekking species compete with each other during sexual displays to attract females. Juvenile males usually are inexperienced in displays and they have minimal chances of attracting females that visit adults. Despite this supposed lack of competition between adults and juveniles, inexperienced juveniles of the White-bearded Manakin (Manacus manacus) that try to rehearse displays in lek areas may be chased aggressively by adult males. Here, I describe same-sex mounting behavior between M. manacus adults and juveniles. Two juvenile males entered the arenas of two high-ranking adults and rehearsed jump-snap display soon after they were mounted by adults. Adults did not chase the juveniles, showing no immediate competition or aggressiveness. Four years later, the same (individually-marked) juveniles had become established adults on the same lek areas where the same-sex mounting behavior was recorded. For juveniles, the same-sex mounting behavior may facilitate their approach to arenas of adults and acquisition of display experience. For adults, benefits derived from such behavior may include social hierarchy imposition and avoidance of conflicts with potentially future newcomer juvenile males in lek areas. However, alternative explanations, such as mistaking juvenile males for females by adult males, cannot be ruled out. (AU)

Processo FAPESP: 12/20593-3 - Sucesso de acasalamento e custo de forrageamento de uma espécie de ave com sistema reprodutivo de lek: integrando as teorias de seleção sexual e forrageamento ótimo
Beneficiário:César Cestari
Linha de fomento: Bolsas no Brasil - Pós-Doutorado