Ecological drivers of breeding periodicity in four forest neotropical eagles

Autor(es)

Blank, Marcel Henrique ; Guimaraes Jr, Paulo Roberto ; do Nascimento, Lucas Ferreira ; Pereira, Ricardo Jose Garcia

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 13, n. 1, p. 10-pg., 2023-03-16.

Resumo

We explore the potential factors that affect clutch initiation in four Neotropical large raptors (Harpy eagle-HE, Crested eagle-CE, Ornate hawk-eagle-OHE, and Black hawk-eagle-BHE) by analyzing 414 clutch events mostly obtained from captive individuals. Differences in how clutch initiation is associated with changes in photoperiod were found between HE and both hawk-eagles, and between CE and BHE. Changes in temperature at the time of clutch initiation only differed between HE and OHE, whereas changes in precipitation varied between BHE and all other species. Principal Component Analysis of these environmental cues showed that ellipses in the dataset of each species overlap, but only ellipses from CE and OHE had the same variation trends. This means that although these species live under similar ecological conditions, they exhibit three different patterns of response to environmental cues. Apparently, these patterns are not associated with phylogenetic relatedness because species belonging to the same clade do not show the same response pattern. Diet diversity analysis revealed that HE has the least varied diet, and CE and OHE the most varied diet. The fact that species who fit the same reproductive timing response to environmental cues show similar diets leads us to hypothesize that breeding in these eagles was most likely shaped by food availability. (AU)

• Processo FAPESP: 20/11479-9 - Geração de células pluripotentes induzidas (iPSC) em animais selvagens ameaçados
• Beneficiário: Marcel Henrique Blank
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 20/09286-8 - Como as interações entre aves frugívoras e plantas podem moldar a coloração da plumagem de aves?
• Beneficiário: Lucas Ferreira do Nascimento
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/17158-4 - Conservação de germoplasma de cracídeos ameaçados por meio de transplantes interespecíficos de células germinativas
• Beneficiário: Ricardo Jose Garcia Pereira
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/14809-0 - Dinâmica evolutiva em redes ecológicas
• Beneficiário: Paulo Roberto Guimarães Junior
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores - Fase 2