INALI   02622
INSTITUTO NACIONAL DE LIMNOLOGIA
Unidad Ejecutora - UE
artículos
Título:
Host use by Philornis sp. in a passerine community in central Argentina
Autor/es:
QUIROGA MA; REBOREDA JC; BELTZER A.H
Revista:
REVISTA MEXICANA DE BIODIVERSIDAD
Editorial:
INST BIOLOGIA
Referencias:
Lugar: México; Año: 2012 p. 110 - 116
ISSN:
1870-3453
Resumen:
We
studied host use by parasitic botflies (Philornis sp.) in a passerine
community in central Argentina and analyzed characteristics of nests and hosts
associated with botfly parasitism. We conducted a four-year field study as well
as a bibliographical survey where we determined: presence of botfly parasitism,
type of nest, presence of green material and small sticks in the nest, average
height of the nest, date of last nesting attempt during the breeding season and
egg volume (as a surrogate of species body mass). Our field study of 3 birds
species showed that botflies parasitized Troglodytes aedon (25% of
nests), but not Sicalis flaveola and Tachycineta leucorroha in
spite of nesting in similar boxes, at the same place and during the same time
of the year. However T. aedon built nests using dry material while S.
flaveola and T. leucorroha used green material.The analysis of
published data (35 species considered) showed a negative association between
botfly parasitism and presence of green material in the nest, and a positive
association between botfly parasitism and presence of small sticks in the nest
and date of the last nesting attempt during the breeding season. Our results
indicate that the materials used to build the nest and the extent of the
breeding season are factors that influence host use by botflies in central
Argentina.