Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern

Figueiras, Alicia Nieves Lorenzo; Kenigsten, A.; Lazzari, Claudio R.

doi:10.1016/0022-1910(94)90071-x

Cited by 82 publications

(45 citation statements)

References 9 publications

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“…In this case, the yields obtained in the different steps were similar to those previously reported [11]. Lorenzo et al [1] demonstrated that every stadium of T. infestans was attracted to and arrested by their own faeces. In addition, it has been reported that the faeces release ammonia which elicited electrophysiological responses from the antennae of T. infestans [12] and attracted nymphs in a servosphere bioassay [3].…”

Section: Discussionsupporting

confidence: 77%

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Behavioural Response of Triatoma infestans (Klug) (Hemiptera: Reduviidae) to Quinazolines

et al. 2005

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Abstract:The behavioural responses of the haematophagous bug Triatoma infestans towards some previously identified components of its faeces: 4-methylquinazoline, 2,4-dimethylquinazoline and their mixtures were evaluated using a video tracking system. Fifth instar nymphs and females but not males were significantly attracted to polyethylene glycol formulations of 4-methyl + 2,4-dimethylquinazoline (50 µg each). Fifth instar nymphs were also attracted to 4-methylquinazoline alone (50 µg) but females were only attracted by the mixture of both methyl quinazolines (50 µg each). Syntheses of both methyl quinazolines were carried out starting from 2-aminoacetophenone by modifying the conditions of reported procedures.

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Section: Discussionsupporting

confidence: 77%

“…The aggregation behaviour elicited from conspecific nymphs and adults by its feces is well known [1,2]. This activity has been attributed to a number of nitrogenous compounds emitted by the faeces.…”

Section: Introductionmentioning

confidence: 99%

Behavioural Response of Triatoma infestans (Klug) (Hemiptera: Reduviidae) to Quinazolines

et al. 2005

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“…of domestic triatomine populations showing aggregation in domicile and peridomicile areas (VazquezProkopec et al 2005). The low mobility and active dispersal of triatomines (SchoÞeld 1994) could explain the aggregation found, as triatomines rest near their feeding source and maintain low activity during the day (Lorenzo Figueiras et al 1994). Some studies also suggest that there are chemical substances in feces that facilitate population aggregations, because these substances are associated with safe resting places and nearby feeding sources (Lorenzo and Lazzari 1996).…”

Section: Discussionmentioning

confidence: 95%

Microdistribution of Sylvatic Triatomine Populations in Central-Coastal Ecuador

Suarez-Davalos

Dangles

Villacís

et al. 2010

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Chagas disease is a serious public health problem in Ecuador, where nearly 230,000 individuals show Trypanosoma cruzi infection. Sylvatic T. cruzi transmission is a threat to current control strategies. This is because of the possibility of house reinfestation by sylvatic triatomines after insecticide treatment. This work quantified the spatial distribution of triatomines in sylvatic habitats and its relationship with nearby human dwellings. A simple random sampling design using live-baited traps and manual searches for triatomines was used in areas near human communities in Manabi province, Ecuador, during June and July 2007. We identified risk factors associated with triatomine density using generalized linear models, and developed predictive maps for triatomine density interpolation. There were 345 triatomines belonging to the species Rhodnius ecuadoriensis and Panstrongylus howardi collected in sylvatic areas. Spatial analyses revealed an aggregated distribution pattern of the sylvatic triatomine populations (clustered mostly at a distance smaller than 100 m). Generalized linear models showed that the distance from the nearest house, nest type, and height from ground level were the main factors explaining triatomine densities. Squirrel nests (Sciurus stramineus), located in plants other than palms, above 5 m and close to the domicile presented higher infestation. Interpolation maps of triatomine microdistribution are presented as potential tools to predict triatomine occurrence. The presence of sylvatic populations and the synanthropic tendency of the vectors highlight the need for continuous active and passive entomological surveillance for the long-term control of Chagas disease.

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“…In the haematophagous bug Triatoma infestans, feces deposited on the substrate can induce both aggregation and orientation through positive anemotaxis (Lorenzo Figueiras et al, 1994). In the velvet worm Euperipatoides rowelli, the aggregation pheromone is also believed to be involved in trail formation (Barclay et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Path selection in cockroaches

Jeanson

Deneubourg

2006

Journal of Experimental Biology

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SUMMARY In gregarious insects, the exploration and the use of the home range can involve both individual navigational abilities and/or chemical trails. Trail formation can result from an active laying of pheromones but can also derive from the incidental deposition of chemical cues. In this study, we investigated whether scent trails can influence path selection in the cockroach Blattella germanica (L.). Experiments were designed to separate the role of prior experience based on the orientation of the path and the presence of trails. In a first phase, cockroaches were able to access freely one or two branches of a platform during a 48 h period. In a second phase, cockroaches were offered a binary choice between one marked and one clean branch, or between two clean branches. In the absence of trails,cockroaches prefer the novel orientation but in the presence of a trail previously laid by the same group of individuals, they prefer the path with the trail, irrespective of orientation. However, cockroaches tended to avoid trails laid by a different group of cockroaches. Overall, our results indicate that both scent cues and response to novelty influence, weakly but significantly, path selection in cockroaches. The plausible nature of scent marks used by cockroaches is discussed. Our study suggests that the influence of incident trailing cues can be modulated by learning to support a flexible orientation strategy depending on individual experience.

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Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern

Cited by 82 publications

References 9 publications

Behavioural Response of Triatoma infestans (Klug) (Hemiptera: Reduviidae) to Quinazolines

Behavioural Response of Triatoma infestans (Klug) (Hemiptera: Reduviidae) to Quinazolines

Microdistribution of Sylvatic Triatomine Populations in Central-Coastal Ecuador

Path selection in cockroaches

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