Autor(es)

Alissa, Louise M. ; Machado, Glauco ; Requena, Gustavo S.

• Tipo de documento: Artigo Científico
• Fonte: BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY; v. 78, n. 2, p. 15-pg., 2024-02-01.

Resumo

Female mate choice is usually based on traits that signal male quality as a sexual partner. According to the "good parent" hypothesis, female mate choice may also consider male quality as a caregiver in species with male-only care. Because parental activities may be costly, males in good condition should be more attractive to females than those in poor condition. We experimentally manipulated the body condition of non-parental and parental males of the egg-tending harvestman Iporangaia pustulosa and then evaluated how it affected their mating success and ability to protect eggs under field conditions. For non-parental males, individuals in good condition had twice the probability of mating than those in poor condition. For parental males, individuals in good condition had two times more chances of mating and acquired five times more eggs than those in poor condition. Surprisingly, males' body condition had no effect on the efficiency of egg protection. Although our results indicate that the male condition is a sexually selected trait, we found no support for the "good parent hypothesis" given that an increase in body condition does not improve the survival of the offspring under male care. Instead, these findings are congruent with predictions of the "essential male care" model, which suggests that, when the costs of parental care are low (as is the case of egg attendance), most males can provide the minimum necessary care for offspring survival. However, only males in good condition can allocate surplus energy to advertise their overall quality and attract more mates. (AU)

• Processo FAPESP: 21/00915-5 - Dimorfismo intra-sexual masculino e táticas alternativas de reprodução: uma abordagem multi-disciplinar
• Beneficiário: Glauco Machado
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular
• Processo FAPESP: 14/21790-2 - Cuida melhor da prole porque é o pai ou é o pai porque cuida melhor da prole? co-evolução entre esforço paternal e características que enviesam a paternidade
• Beneficiário: Gustavo Requena Santos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 15/10448-4 - Inter-relações entre cuidado paternal e seleção sexual em opiliões
• Beneficiário: Glauco Machado
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/21069-1 - Papais em plena forma: efeito da condição corpórea sobre a atratividade dos machos em um opilião com cuidado paternal (Arachnida: Opiliones)
• Beneficiário: Louise Alissa de Morais
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica