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dc.contributor.authorFranz, Ismaelpt_BR
dc.contributor.authorFontana, Carla Suertegaraypt_BR
dc.date.accessioned2023-10-26T03:38:48Zpt_BR
dc.date.issued2021pt_BR
dc.identifier.issn0001-3765pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/266241pt_BR
dc.description.abstractTawny-bellied Seedeater (Sporophila hypoxantha) is an endangered (in Brazil) grassland dependent species, whose breeding success remains poorly known hampering conservation measures on its breeding grounds. Here we analyze the nest survival of the species in relation to temporal and environmental variables over three breeding seasons in hilly dry grasslands in southern Brazil. The apparent nest success was 40%, and MARK survival 20%. Predation was the main cause of failure, affecting 55% of the unsuccessful nests, followed by desertion, infestation by Philornis fly larvae, cattle trampling and burning. The productivity was 1.77 young per pair. Best models include time-specific factors (nest age and time of breeding season), reflected by a gradual reduction in nest survival over the nesting cycle, accompanied by an increase in temperature, subcutaneous larvae infestation, and predation. Nest site characteristics did not influence nest survival. Predation is more prevalent in the nestling rearing period than during incubation. This tendency may be caused by an increase in the activity in the nests, as is predicted by the Skutch hypothesis. The conclusion that time-specific factors influence nest survival more than ecological variables is important to plan on seasonally dependent conservation and management measures.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofAnais da Academia Brasileira de Ciências. Vol. 93, supl. 3 (2021), e20191458, 12 p.pt_BR
dc.rightsOpen Accessen
dc.subjectAvespt_BR
dc.subjectReproductive successen
dc.subjectReproduçãopt_BR
dc.subjectNidificaçãopt_BR
dc.subjectPredaçãopt_BR
dc.subjectProdutividadept_BR
dc.subjectOrnitologiapt_BR
dc.titleDrivers of nest survival in the Tawny-bellied Seedeater Sporophila hypoxantha (Aves: Thraupidae) : time-specific factors are more related to success than ecological variablespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001149643pt_BR
dc.type.originEstrangeiropt_BR


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