Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatomainfestans in rural northwestern Argentina

Ceballos, Leonardo A.; Vázquez-Prokopec, Gonzalo M.; Cecere, María C.; Marcet, Paula L.; Gürtler, Ricardo E.

doi:10.1016/j.actatropica.2005.05.010

Cited by 73 publications

(99 citation statements)

References 22 publications

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“…However, in field experiments with laboratory T. infestans, the number of females dispersing by flight was higher relative to males (Canale & Carcavallo 1985, Gurevitz et al 2006, Minoli & Lazzari 2006. The results presented here would indicate that T. infestans males fly more frequently than females, coinciding with the results of Vazquez-Prokopec et al (2004) and Ceballos et al (2005).…”

Section: Discussionsupporting

confidence: 74%

“…According to Curto de Casas & Carcavallo (1995), low relative humidity would stimulate an increase in feeding frequency to prevent dehydration and would consequently promote a search for food. In our study, the highest number of dispersing T. infestans were captured in January (mid summer), whereas VazquezProkopec et al (2006) and Ceballos et al (2005) captured the most flying individuals in March (late summer).…”

Section: Discussionmentioning

confidence: 52%

“…Body length was measured from the clypeus to the abdominal tip using a hand-held calliper. These measurements were used to calculate the W/L ratio, which is used by many authors as an indicator of flight dispersal probability (Lehane & Schofield 1982, Ceballos et al 2005, Gurevitz et al 2006). …”

Section: Nutritional Status (W/l) -Body Weight (Tr) Of Adultmentioning

confidence: 99%

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Dispersal of Triatoma infestans and other Triatominae species in the arid Chaco of Argentina: Flying, walking or passive carriage? The importance of walking females

Abrahan¹,

Gorla²,

Catalá³

2011

Mem. Inst. Oswaldo Cruz

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Section: Discussionsupporting

confidence: 74%

Section: Discussionmentioning

confidence: 52%

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Dispersal of Triatoma infestans and other Triatominae species in the arid Chaco of Argentina: Flying, walking or passive carriage? The importance of walking females

Abrahan¹,

Gorla²,

Catalá³

2011

Mem. Inst. Oswaldo Cruz

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“…We observed differing counts of T. infestans between seasons. differences in host availability and feeding frequency by seasonality (López et al 1999, Ceballos et al 2005) and instar (Ceballos et al 2005), fecundity and mortality seasonality (Canals et al 1991) and different capacities to move (Vazquez-Prokopec et al 2006) along with their behavior to enter into an induced diapause when the environmental conditions are adverse (Canals et al 1992) may e�plain our results.…”

Section: Discussionmentioning

confidence: 40%

Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs

Bacigalupo¹,

Torres-Pérez

Segovia³

et al. 2010

Mem. Inst. Oswaldo Cruz

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Chagas disease, caused by the protozoan Trypanosoma cruzi and transmitted by triatomine insect vectors, affects about 10 million people worldwide (Schmunis 2000) and is the third most important global parasitic disease after malaria and schistosomiasis (World Bank 1993). Because of effective vector control campaigns, the number of acute cases has decreased markedly and has been reduced to nearly zero in previously highly endemic areas of Uruguay, Chile and Brazil (Schofield et al. 2006).The Chagas disease vector Triatoma infestans (Klug 1834) was historically considered an e�clusively do-) was historically considered an e�clusively domestic insect, but it has now been reported in sylvan environments (Noireau et al. 2005, Noireau 2009). The first sylvatic population of T. infestans was reported in Cochabamba, Bolivia, inhabiting rock piles associated with wild guinea pigs (Torrico 1946). Other reports have shown T. infestans in Argentina (Mazza & Schreiber 1938, Mazza 1943, Ceballos et al. 2009), Paraguay (Velasquez & González 1959 and Brazil (Barretto et al. 1963) under rocks or trunks of fallen trees, in hollow trees, under bark, in shelters or burrows of marsupials and rodents and in bird nests occupied by owls, parrots or small rodents (Noireau et al. 1997). Wild T. infestans has been found in an e�tended geographical region throughout Chaco and three Andean departments of Bolivia: Cochabamba, La Paz and Potosí (Noireau et al. 1999, Cortez et al. 2007. T. infestans was considered to be eradicable due to its strictly domestic behavior and its non-autochthonous status outside of its apparent centre of origin in the Andean valleys of Bolivia. This theory has been challenged by empirical evidence of wild individuals collected by vector control programs and researchers over several decades (Gürtler 2009). Sylvatic triatomines may occasionally invade human residences, acting as founders of new colonies (Fitzpatrick et al. 2008). Hence, it is necessary to study the ecology and behavior of their populations to understand the domiciliation process and generate new strategies for their control (Beard et al. 2002, Guhl et al. 2009, Moncayo & Silveira 2009).In Chile, parasite transmission from vectors to humans occurs mainly in rural and suburban areas encompassing the northern desert and semiarid and Mediterranean environments, between latitudes 18°30'S and 34°36'S. The triatomine insects T. infestans, Mepraia spinolai (Porter 1934) and Mepraia gajardoi are the vector species that have been reported in that area (Spinola 1852, Neghme 1982, Lent et al. 1994, Frias et al. 1998.In 1991, several countries of South America, including Chile, established the Southern Cone Initiative for control of Chagas disease (INCOSUR-Chagas), which provided united strategy, control actions and an information system used to evaluate local control programs (Silveira 2002). The specific aims of the initiative were the following: (i) the elimination of T. infestans from dwellings and their surroundings in endemic areas, (ii) the reduction an...

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“…An empirical model predicted that flight initiation of laboratory-reared T. infestans is associated with a low nutritional status and high temperatures. 6,7 Active dispersal of T. infestans has seasonal variation with peaks in summer and males outnumber females as potential fliers. 8,9 Moreover, flight dispersal is the most important mechanism for reinfestation of houses at a village scale after insecticide spraying.…”

Section: Introductionmentioning

confidence: 99%

Differential Expression of Glycerol-3-Phosphate Dehydrogenase Isoforms in Flight Muscles of the Chagas Disease Vector Triatoma infestans (Hemiptera, Reduviidae)

Stroppa

Lagunas²,

Carriazo³

et al. 2013

The American Society of Tropical Medicine and Hygiene

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Abstract. Flight muscles of Triatoma infestans have two glycerol-3-phosphate dehydrogenase (GPDH) isoforms: GPDH-1 is involved in flight metabolism and GPDH-2 provides lipid precursors. Total GPDH activity was greater in the natural population and almost only due to GPDH-1. Different expression and activity observed between GPDH isoforms in the natural population and the first laboratory generation was not detected in the second laboratory generation. This pattern may be caused by gradual adaptation to laboratory nutritional conditions. During development, the expression of GPDH-2 increased with a longer time of intake, which would imply an increment in lipid biosynthesis. The GPDH-1 transcript predominated with respect to that of GPDH-2 in the lower nutritional condition, suggesting the necessity of insects to fly during this nutritional status. The transcriptional pattern showed a delay at 22 C. The isoforms activities and transcript patterns in flight muscles suggest transcriptional adaptation to metabolic requirements originated by alternative splicing.

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Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatomainfestans in rural northwestern Argentina

Cited by 73 publications

References 22 publications

Dispersal of Triatoma infestans and other Triatominae species in the arid Chaco of Argentina: Flying, walking or passive carriage? The importance of walking females

Dispersal of Triatoma infestans and other Triatominae species in the arid Chaco of Argentina: Flying, walking or passive carriage? The importance of walking females

Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs

Differential Expression of Glycerol-3-Phosphate Dehydrogenase Isoforms in Flight Muscles of the Chagas Disease Vector Triatoma infestans (Hemiptera, Reduviidae)

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