Biologia reprodutiva de Taraba major (Aves, Thamnophilidae) na região do Pirizal, Porção Norte do Pantanal, Mato Grosso, Brasil

Papéis Avulsos de Zoologia (São Paulo)

Kelrene M Lara²  João B Pinho¹  Roberto M.l Silveira¹ 

[1] ,Universidade Federal de Mato Grosso Laboratório de Ornitologia Cuiabá MT ,Brasil

关键词: Antbirds;    Breeding biology;    Clutch-size;    Life history;    Nest;    Biologia reprodutiva;    História de vida;    Ninhos;    Tamanho da ninhada;    Thamnophilidae;   

DOI  :  10.1590/S0031-10492012021000001

来源: SciELO

【 摘 要 】

We describe some aspects of the reproductive biology of the Great Antshrike (Taraba major), such as: reproductive period, nests, eggs, nestlings, incubation period, and permanence of nestlings in the nest. The data were collected during the breeding seasons of 2009 and 2010 at Retiro Novo Farm, municipality of Poconé, Pantanal, Mato Grosso, Brazil. Nest searching was conducted through active searching and observation of adults carrying nest material or food for the nestlings. The nests were visited at intervals of three to four days. Fifty-one active nests were monitored. The reproductive period of the species lasted from October to December. The average time of nest construction was 06 ± 1.6 days (n = 08). Eggs were ovoid, white with brown spots scattered throughout their length. The mass, length, and average width of the eggs were 0.5 g, 6.1 ± 1 mm, and 26.8 ± 19.5 ± 1 mm, respectively (n = 74). Litter size ranged from two (n = 13) to three (n = 1) eggs. Both sexes built the nest and took turns during incubation. The average time of incubation was 15.5 ± 1.7 days (n = 08), and the nestling period ranged from 13.2 ± 1.6 days (n = 08).

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