IBBEA   24401
INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Unidad Ejecutora - UE
artículos
Título:
Different competitive abilities for the occupancy of shelters in kissing bugsDifferences in competitive ability for the occupancy of shelters in triatomines
Autor/es:
MINOLI, SEBASTIAN; MINOLI, SEBASTIAN; ZACHARIAS, CLAUDIA; ZACHARIAS, CLAUDIA; MANRIQUE, GABRIEL; MANRIQUE, GABRIEL
Revista:
MEDICAL AND VETERINARY ENTOMOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2017 p. 252 - 262
ISSN:
0269-283X
Resumen:
Triatomines (Hemiptera: Reduviidae: Triatominae) are nocturnalblood-sucking insects. During daylight hours they remain in an akinetic state inside theirshelters, whereas at dusk they become active and move outside. When they are outsidetheir shelters during the photophase, triatomines are vulnerable to diurnal predators andthe period just before dawn is critical to their survival. This work analyses the existenceof competitive interactions involved in the occupancy of shelters by triatomines.Behavioural assays were performed in which nymphs of different stages, nutritionalstatus or species were released in an experimental arena containing a space-limitedartificial shelter. The proportions of individuals occupying the shelter during the photophasewere quantified to estimate the competitive abilities of each stage and species.Intraspecific comparisons showed higher levels of shelter occupancy for fourth overfifth instars and fed over unfed nymphs of Triatoma infestans. Interspecific comparisonsshowed higher rates of shelter occupancy for Triatoma sordida in comparison withT. infestans, and for T. infestans over Rhodnius prolixus. Arrival order was also relevantto determining shelter occupancy levels: early arrival was advantageous in comparisonwith later arrival. The study of intra- and interspecific competitive interactions forshelter occupancy provides relevant information about colonization and recolonizationprocesses in the natural environments of triatomines.