Aggregation behaviour in Panstrongylus megistus and Triatoma infestans: inter and intraspecific responses

Pires, Herton Helder Rocha; Lorenzo, Marcelo G.; Diotaiuti, Liléia; Lazzari, Cláudio R.; Figueiras, Alicia Nieves Lorenzo

doi:10.1016/s0001-706x(01)00185-1

Cited by 36 publications

(30 citation statements)

References 19 publications

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“…Additionally, substances emitted by feces and cuticles of T. infestans and P. megistus promote interspecific aggregation responses. 29 Despite this extensive literature on the cohabitation patterns of different Chagas disease vectors, no studies have investigated whether T. infestans and P. megistus actually aggregate inside shelters or tend to repel each other. The choice and subsequent exploitation of shelters by triatomines is mediated by diverse stimuli and behaviors, such as negative phototaxis, positive thigmotaxis, preference for low relative humidity, and distinct chemical signals.…”

Section: Introductionmentioning

confidence: 99%

“…The choice and subsequent exploitation of shelters by triatomines is mediated by diverse stimuli and behaviors, such as negative phototaxis, positive thigmotaxis, preference for low relative humidity, and distinct chemical signals. [30][31][32][33][34][35] Although interspecific responses to fecal and cuticular chemical signals between T. infestans and P. megistus is well documented, 29 whether other stimuli could be responsible for a mutual repellence process between cohabitating insects of these species is still unknown.…”

Section: Introductionmentioning

confidence: 99%

“…29,[40][41][42] It was previously demonstrated that P. megistus and T. infestans show cross-aggregation responses to chemical signals from feces and cuticle of the other species. 29 In other taxa of Hemiptera, intra-specific and inter-specific aggregation responses were also demonstrated. Six different species of pentatomids (Hemiptera: Pentatomidae) showed a similar behavioral pattern in the presence of aggregation signals.…”

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confidence: 99%

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Lack of Segregation between Two Species of Chagas Disease Vectors

Mota¹,

Lorenzo²

2012

The American Journal of Tropical Medicine and Hygiene

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Abstract. Triatoma infestans and Panstrongylus megistus are relevant Chagas disease vectors. An apparent segregation among these triatomine species inside human households was suggested to rely on mutual repellence between them. However, P. megistus and T. infestans show aggregation responses to chemical signals emitted by the other species. These findings do not rule out the possibility that stimuli other than chemical signals could mediate repellence when these species exploit shelters simultaneously. In the present study, we investigated how P. megistus and T. infestans exploit shelters in controlled laboratory conditions and how insect density and environmental illumination modulate this behavior. We evaluated whether these species aggregate inside shelters or mutually repel each other. Panstrongylus megistus and T. infestans show specific patterns of shelter exploitation, which are differentially affected by insect density and environment illumination. In particular, P. megistus is more sensitive to insect density than T. infestans, whereas T. infestans shows higher sensitivity to illumination than P. megistus. Nevertheless, these species exploit shelters randomly without any apparent repellence.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Lack of Segregation between Two Species of Chagas Disease Vectors

Mota¹,

Lorenzo²

2012

The American Journal of Tropical Medicine and Hygiene

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“…A recent study showed that methylated quinazolines, present in faeces, are attractive to T. infestans. 86 Another source for an aggregation factor for larvae are their footprints, as has been shown for T. infestans, 87 T. pseudomaculata 83 and P. megistus, 85 with evidence of cross-attraction in some species.…”

Section: Assassin Bugs (Hemiptera: Reduviidae)mentioning

confidence: 93%

“…An aggregation behavior has been described for T. infestans and several other reduviid species, which are also vectors for T. cruzi. Larvae of T. infestans, 81,82 T. pseudomaculata, 83 T. sordida, 82 T. guasayana, 82 Rhodnius prolixus, 84 and Panstrongylus megistus 85 are attracted to their faeces. This attraction is not specific, as inter-specific attraction to excrements has been shown for several species.…”

Section: Assassin Bugs (Hemiptera: Reduviidae)mentioning

confidence: 99%

Insect pheromone research in South America

Bergmann

González

Zarbin

2009

J. Braz. Chem. Soc.

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As pesquisas com feromônios de insetos tem uma longa e rica história, construída, primariamente, pelos estudos conduzidos no hemisfério Norte. Não é surpresa que estes estudos tenham apontado, em grande parte, para espécies relevantes dessas regiões do mundo, na maioria pragas agrícolas e florestais. As investigações com feromônios nos países da América do Sul vieram somente algumas décadas atrás, apesar da sua forte dependência agrícola e, conseqüentemente, no manejo de pragas. Nos últimos 20 anos, fatores econômicos, ambientais e técnicos têm caminhado juntos para gerar um pequeno, mas crescente, número de ecologistas químicos trabalhando na química e biologia dos feromônios na América do Sul. Neste artigo, foram compilados os resultados desta tendência. Foram revisados os estudos feitos com feromônios nos quais os cientistas da América do Sul têm participado em parceria com cientistas estrangeiros, majoritariamente grupos de química, como também os estudos realizados dentro da região. O principal objetivo são as pesquisas que envolvem a caracterização dos feromônios de espécies nativas, as quais compreendem as ordens mais importantes como Lepidoptera, Coleoptera, Heteroptera e Himenoptera. É também apresentada uma meta-análise, incluindo a distribuição geográfica, a tendência dos trabalhos de colaboração ou independente, e a evolução nos últimos 20 anos dos artigos publicados na área. Finalmente, é enfatizada a importância do esforço coordenado para promover o avanço deste campo na América Latina, através do respaldo e colaboração internacional dentro da região. Esta meta deverá ser alcançada através de uma organização acadêmica regional, incumbida da realização contínua de encontros científicos.Insect pheromone research has a long and rich history built up primarily by studies conducted in the Northern hemisphere. Not surprisingly, these studies have largely targeted species relevant to these regions of the world, for the most part agricultural and forest pests. Pheromone research in South American countries came a few decades behind, albeit their strong dependence in agriculture and therefore in pest management. In the last 20 years, a combination of economic, environmental and technical factors have come together to generate a small but rising number of chemical ecologists working in pheromone chemistry and biology in South America. In this article we summarize the results of this trend. We review pheromone studies in which South American scientists have participated in collaboration with foreign scientists, mostly chemistry groups, as well as the ever-growing number of studies carried out completely within the region. We have focused mainly in research involving the characterization of pheromones from native species, which involve the most important insect orders, namely Lepidoptera, Coleoptera, Heteroptera and Hymenoptera. We also present a simple meta-analysis including geographical distribution, trends in collaborative or independent work, and a 20-year evolution of published articles in the field. Fin...

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Semiochemicals of the common bed bug, Cimex lectularius L. (Hemiptera: Cimicidae), and their potential for use in monitoring and control

Weeks

Birkett

Cameron

et al. 2010

Pest Management Science

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The recent resurgence of the common bed bug, Cimex lectularius L., has driven an increase in research into the biology and behaviour of this pest. Current control is reliant on the application of insecticides, but, owing to the development of insecticide resistance, there is a need for new tools and techniques. Semiochemicals (behaviour- and physiology-modifying chemicals) could be exploited for management of bed bugs. The aim of this review was to evaluate studies undertaken in bed bug chemical ecology to date, with particular reference to how the research could be exploited for monitoring and control. Bed bugs, like many other insects, have a complex olfactory system. Recent studies have characterised the olfactory sensilla, located on the terminal segment of the antennae, to functional classes by electrophysiological screening. Behavioural studies have revealed the presence of an alarm pheromone and potential airborne aggregation semiochemicals, but it is not yet understood if bed bugs use a sex pheromone during mating. Host location cues have been investigated, and carbon dioxide has been found to be highly attractive both in laboratory and in field studies. Recent field trials have tested blends of other potential kairomones, which have been shown to have an additive effect when used in a heated bed bug trap with carbon dioxide. The trap, which combines heat and kairomones, is the only trap currently available with proven efficacy in the field. In order for semiochemicals to be useful for bed bug management, an increased knowledge and understanding of the biology, behaviour and chemical ecology of this insect is essential.

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Aggregation behaviour in Panstrongylus megistus and Triatoma infestans: inter and intraspecific responses

Cited by 36 publications

References 19 publications

Lack of Segregation between Two Species of Chagas Disease Vectors

Lack of Segregation between Two Species of Chagas Disease Vectors

Insect pheromone research in South America

Semiochemicals of the common bed bug, Cimex lectularius L. (Hemiptera: Cimicidae), and their potential for use in monitoring and control

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