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Abstract:

Roads and roadsides represent a modified habitat markedly different from the original enviwerronment in which they are embedded. Conditions associated with roads can influence some insects' population levels. In order to evaluate the degree of association between Pogonomyrmex pronotalis, Pogonomyrmex rastratus and Pogonomyrmex inermis, and roads in the central Monte desert we estimated colony density in the open woodland and in two roads. We also studied the activity and the diet of the three species in colonies located in both habitats. Pogonomyrmex pronotalis' colony density was higher in the roads, Pogonomyrmex rastratus' was lower and similar in both habitats and Pogonomyrmex inermis' was very low in the roads and even lower in the open woodland. Pogonomyrmex pronotalis' activity was higher in roads and also higher than Pogonomyrmex rastratus' and Pogonomyrmex inermis'. These two species presented similar levels of activity in both habitats. Diets were similar for the three species in the roads and in the open woodland. Seeds accounted for 80-100% of the items carried to the nests, and consisted mainly of grass seeds (more than 75% of the seeds). Seed species richness in the diets did not differ between habitats for any ant species. The proportion of some seeds in Pogonomyrmex pronotalis' diet varied between habitats. Pogonomyrmex pronotalis was the only species that showed an association with roads. Its higher density there is probably due to favourable sites for nesting and establishment of colonies and its higher activity levels could be related to more suitable temperatures for this species. The results show that the location of the nest could only subtly influence the trophic ecology of these ants.

Registro:

Documento: Artículo
Título:Association between granivorous ants Pogonomyrmex pronotalis, P. rastratus and P. inermis, and roads inthe central Monte desert
Autor:Pirk, G.I.; de Casenave, J.L.; Pol, R.G.
Filiación:Grupo de Investigacion en Ecodes, Depto. Ecologia Genetica/Evolucion, FCEyN, Buenos Aires, Argentina
Grupo de Investigacion en Ecodes, UFyEV, IADIZA, Mendoza, Argentina
Palabras clave:Abundance; Diet; Foraging activity; Nesting sites; Seeds; abundance; ant; diet; foraging behavior; nest site; population density; road; Argentina; Mendoza; Monte Desert; South America; Formicidae; Hexapoda; Hymenoptera; Insecta; Pogonomyrmex; Pogonomyrmex inermis; Pogonomyrmex pronotalis; Pogonomyrmex rastratus
Año:2004
Volumen:14
Número:1
Página de inicio:65
Página de fin:76
Título revista:Ecologia Austral
Título revista abreviado:Ecol. Austral
ISSN:03275477
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v14_n1_p65_Pirk

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Citas:

---------- APA ----------
Pirk, G.I., de Casenave, J.L. & Pol, R.G. (2004) . Association between granivorous ants Pogonomyrmex pronotalis, P. rastratus and P. inermis, and roads inthe central Monte desert . Ecologia Austral, 14(1), 65-76.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v14_n1_p65_Pirk [ ]
---------- CHICAGO ----------
Pirk, G.I., de Casenave, J.L., Pol, R.G. "Association between granivorous ants Pogonomyrmex pronotalis, P. rastratus and P. inermis, and roads inthe central Monte desert " . Ecologia Austral 14, no. 1 (2004) : 65-76.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v14_n1_p65_Pirk [ ]
---------- MLA ----------
Pirk, G.I., de Casenave, J.L., Pol, R.G. "Association between granivorous ants Pogonomyrmex pronotalis, P. rastratus and P. inermis, and roads inthe central Monte desert " . Ecologia Austral, vol. 14, no. 1, 2004, pp. 65-76.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v14_n1_p65_Pirk [ ]
---------- VANCOUVER ----------
Pirk, G.I., de Casenave, J.L., Pol, R.G. Association between granivorous ants Pogonomyrmex pronotalis, P. rastratus and P. inermis, and roads inthe central Monte desert . Ecol. Austral. 2004;14(1):65-76.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v14_n1_p65_Pirk [ ]