Noireau François auteur aut IRD Dujardin Jean-Pierre auteur aut IRD text journalArticle eng text/pdf reformatted digital access Nutritional status relating to flight activity was investigated in natural populations of Triatoma sordida and T. guasayana during the dry season in the Bolivian Chaco. The peak flight activity of both species was unimodal and covered the period 61-180 min after sunset. The weight of insects was used as the indicator of nutritional status. Interspecies comparisons employing the same sex and type of capture showed a higher weight for T. guasayana. No significant difference according to weight was observed between flying insects and those collected in natural ecotopes (hollow trees and bromeliads). More than 87% of insects collected from natural ecotopes displayed flight ability under the study conditions, explaining their tendency to invade artificial structures during the dry season. (Résumé d'auteur) specialized INSECTE NUISIBLE VECTEUR ETHOLOGIE ETAT NUTRITIONNEL DISPERSION VARIATION SAISONNIERE ETUDE COMPARATIVE ACTIVITE DE VOL BOLIVIE 052GLOTRY01 96 3 385-389 2001 0074-0276 https://www.documentation.ird.fr/hor/fdi:010025662 0074-0276 [F B010025662] https://www.documentation.ird.fr/hor/fdi:010025662 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_57-58/010025662.pdf IRD - Base Horizon / Pleins textes 2001-06-21 2021-05-20 fdi:010025662 fre