Publication: Biología alimentaria del carpintero real Colaptes melanochloros (Aves: picidae) en el valle aluvial del Rio Paraná, Argentina
Authors
Beltzer, Adolfo H. ; Paporello de Amsler, Graciela ; Neffen, María Inés
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Facultad de Biología
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Publisher
Murcia: Universidad de Murcia, Servicio de Publicaciones
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Se dan a conocer los resultados de un estudio realizado sobre la dieta del carpintero real (Colaptes
melanochloros) basado en ejemplares capturados en el período 1984-1987. El estudio se efectuó con la
finalidad de presentar datos cuantificados sobre el espectro trófico a lo largo del ciclo anual y discutir sobre las
posibles diferencias que pueda presentar la dieta y la amplitud trófica del nicho, como así también el tamaño
de las presas y ntmo diario de actividad alimentaria. Los resultados revelan una dieta carnívora, siendo
Iridomyrmex humilis la especie más importante sobre un total de 15 entidades taxonómicas. La amplitud
trófica del nicho varió estacionalmente (2,04 en primavera, 1,64 en verano, 2,07 en otoño y 2,31 en invierno).
En lo referente al ritmo diario de actividad alimentaria se observó un patrón lineal decreciente entre las 09:OO
y 17:OO horas.
The results of a study about the diet of the Golden- Breasted- Woodpecker (Colaptes melanochloros) based on the analysis of the 33 stomach contents of specimens captured during 1984- 1987 are presented. The purposes of the study were to supply data on habits of the species though the annual cycle, looking for temporal differences of the diet and the composition amplitude of the niche dimension as well as document the preys size and the dayly nthm of the feeding activity. The results indicate a carnivorous diet, being the ant Iridomyrmex humilis the most important species aamong a total of 15 taxonomic entities. The trophic amplitude of the niche varied little seasons (2.04 at spring, 1.64 at summer, 2.07 at autumm and 2.31 at winter). Regarding the dayly nthm of feeding activity, it was obsewed a linear decreasing pattern between the 09:OO and 17:OO hs.
The results of a study about the diet of the Golden- Breasted- Woodpecker (Colaptes melanochloros) based on the analysis of the 33 stomach contents of specimens captured during 1984- 1987 are presented. The purposes of the study were to supply data on habits of the species though the annual cycle, looking for temporal differences of the diet and the composition amplitude of the niche dimension as well as document the preys size and the dayly nthm of the feeding activity. The results indicate a carnivorous diet, being the ant Iridomyrmex humilis the most important species aamong a total of 15 taxonomic entities. The trophic amplitude of the niche varied little seasons (2.04 at spring, 1.64 at summer, 2.07 at autumm and 2.31 at winter). Regarding the dayly nthm of feeding activity, it was obsewed a linear decreasing pattern between the 09:OO and 17:OO hs.
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