Ocorrência e aspectos da criação em cativeiro do trinca-ferro (Saltator similis, Lafresnaye e D Orbigny, 1837) (Passeriformes: Thraupidae) na região de viçosa Minas Gerais

• Autor(a) principal: Alvarenga, Gilda Ribeiro de
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/2294
• topic: Passeriformes; Thraupidae; Trinca-ferro; Conservação; Tráfico; Passerines; Thraupidae; Crack-iron; Conservation; Traffic; CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA::ZOOLOGIA APLICADA::CONSERVACAO DAS ESPECIES ANIMAIS

Saltator similis (Lafresnaye and D' Orbigny, 1837) is a species appreciated by bird keeper due to its strong and melodious singing and aggressive behavior and that demand for birds in urban centers has led, apparently, to a rapid decline of populations in many areas of Brazil. This study evaluated the variation in occurrence and abundance of S. similis in forest fragments in Viçosa and Paula Cândido (Minas Gerais) between the years of 1996, 2000 , 2010 and 2013 in addition to assess the number of individuals kept in captivity in Viçosa . In 2013 sampling was conducted in 38 forest fragments in the cities of Paula Cândido and Viçosa, Minas Gerais, using playback. The data occurrence, frequency of occurrence and abundance obtained in 2013 were compared with those obtained for the same fragments in 1996, 2000 and 2010 points per sample. To assess the amount of S. similis in captivity in the urban area of Viçosa, 27 neighborhoods was traversed on foot recording all individuals seen or heard in captivity. The results were compared with the number of birk keepers registered in the Sistema de Cadastro de Criadouros de Passeriformes (SISPASS). Even with the use of playback in 2013 the number of individuals and fragments records of the species and the relative abundance declined in relation to 1996 and 2000 where sampling was passive. The use of playback may have influenced the increase in these parameters in 2013 compared to 2010 however; the specie was rare in this region in both years. The number of registered in SISPASS (n= 637) was almost six times greater than the number of individuals identified in the streets (n=112) and this fact may be due to limitations of the sampling method, for irregularities bird keepers to register their birds in SISPASS or by the junction of two factors. The results of this study support previous studies that reported the decline of S. similis in the region is related to the pressure of harvesting on the species. Monitoring S. similis in the wild, studies about their biology and ethno - ornithological studies are recommended for the development of strategies for management and conservation of the species.