Normal blood glucose level depends on the availability of insulin and its ability to bind insulin receptor (IR) that regulates the downstream signaling pathway. Insulin sequence and blood glucose level usually vary among animals due to species specificity. The study of genetic variation of insulin, blood glucose level and diabetics symptoms development in Aves is interesting because of its opti...

I examined the diet of breeding White-tailed Kites (Elanus leucurus; Aves; Accipitridae) and Barn Owls (Tyto alba; Aves; Tytonidae) in an agrarian area of southern Brazil by analyzing regurgitated prey remains. The objective was to evaluate how these raptors, which differ markedly in their hunting activity periods (owls are nocturnal and kites diurnal), share their mammalian food component. 2,0...

BACKGROUND Mitochondrial ND gene, which encodes NADH dehydrogenase, is the first enzyme of the mitochondrial electron transport chain. Leigh syndrome, a neurodegenerative disease caused by mutation in the ND2 gene (T4681C), is associated with bilateral symmetric lesions in basal ganglia and subcortical brain regions. Therefore, it is of interest to analyze mitochondrial DNA to glean information...

Photographic evidence for Emberiza melanocephala Scopoli, 1769, Trochalopteron squamatum (Gould, 1835) and Lonchura malacca (Linnaeus, 1766) (Aves: Passeriformes) in the Pokhara Valley of Kaski district, Nepal

Este trabajo presenta los registros incidentales directos por avistamiento e indirectos mediante cámara trampa, de ocupación y anidamiento aves en el Bien Nacional Protegido Islote Albatros, obtenidos marco las actividades monitoreo la colonia reproductiva albatros ceja negra Thalassarche melanophris (Temminck, 1828) acciones control del visón americano Neovison vison (Schreber, 1777) llevadas ...

Studies of Neotropical birds, and their distributions and areas of endemism, in particular, have been central in the formulation of hypotheses proposed to explain the high species diversity in the Neotropics. We used mtDNA sequence data (ATPase 6 and 8, COI, and cyt b) to reconstruct the species-level phylogenies for two genera, Pionopsitta (Aves: Psittacidae) and Pteroglossus (Aves: Ramphastid...

La Región del Biobío al formar parte “hotspot” de biodiversidad “Chilean Winter rainfall - Valdivian forests” se caracteriza por tener una tasa alta tanto endemismo como pérdida hábitats y fragmentación. Aunque las aves permiten monitorear estas realidades, además los efectos que sobre sus tiene el Cambio Climático Global (CCG), su conocimiento aún es escaso en la Chile. Un inve...

Light-level geolocation data loggers, or geologgers, have recently been miniaturized to the extent that they can be deployed on small songbirds, allowing us to determine many previously unknownmigration routes, breeding locations, and wintering sites. Use of geologgers on small birds has great potential to help address major research and conservation questions, but the method is not without its...