Flight muscle dimorphism and heterogeneity in flight initiation of field-collected Triatoma infestans (Hemiptera: Reduviidae)

Recent experiments demonstrated that most field-collected Triatoma infestans (Klug) (Hemiptera: Reduviidae) adults from northern Argentina either never initiated flight or did so repeatedly in both sexes. This pattern could not be explained by sex, adult age, weight, weight-to-length ratio (W/L), or...

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Guardado en:
Detalles Bibliográficos
Publicado: 2007
Materias:
Chagas disease
Dispersal polymorphism
Flight muscles
Reinfestation
Triatominae
Hemiptera
Reduviidae
Triatoma infestans
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v44_n2_p186_Gurevitz
http://hdl.handle.net/20.500.12110/paper_00222585_v44_n2_p186_Gurevitz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00222585_v44_n2_p186_Gurevitz
record_format dspace
spelling paper:paper_00222585_v44_n2_p186_Gurevitz2023-06-08T14:48:27Z Flight muscle dimorphism and heterogeneity in flight initiation of field-collected Triatoma infestans (Hemiptera: Reduviidae) Chagas disease Dispersal polymorphism Flight muscles Reinfestation Triatominae Hemiptera Reduviidae Triatoma infestans Triatominae Recent experiments demonstrated that most field-collected Triatoma infestans (Klug) (Hemiptera: Reduviidae) adults from northern Argentina either never initiated flight or did so repeatedly in both sexes. This pattern could not be explained by sex, adult age, weight, weight-to-length ratio (W/L), or chance. We examined whether bugs that never initiated flight possessed developed flight muscles, and whether flight muscle mass relative to total body mass (FMR) was related to the probability of flight initiation. Approximately half of the adults that never initiated flight had no flight muscles. The absence of flight muscles was 2.4 times more frequent in males than females. Females had significantly larger flight muscle mass than males. For both sexes, the frequency of bugs with no flight muscles was spatially heterogeneous among individual collection sites. A logistic regression model of flight initiation that included both FMR and W/L provided a better fit than models including either one of these predictors. FMR is a novel predictor of flight initiation in Triatominae, with a stronger effect than W/L. The higher frequency of females initiating flight in our experiments may be explained by females having flight muscles more frequently than males, and having FMR and W/L values more suitable for flying. These findings demonstrate that individuals and natural populations of T. infestans can differ dramatically with regard to flight initiation. © 2007 Entomological Society of America. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v44_n2_p186_Gurevitz http://hdl.handle.net/20.500.12110/paper_00222585_v44_n2_p186_Gurevitz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Chagas disease
Dispersal polymorphism
Flight muscles
Reinfestation
Triatominae
Hemiptera
Reduviidae
Triatoma infestans
Triatominae
spellingShingle Chagas disease
Dispersal polymorphism
Flight muscles
Reinfestation
Triatominae
Hemiptera
Reduviidae
Triatoma infestans
Triatominae
Flight muscle dimorphism and heterogeneity in flight initiation of field-collected Triatoma infestans (Hemiptera: Reduviidae)
topic_facet Chagas disease
Dispersal polymorphism
Flight muscles
Reinfestation
Triatominae
Hemiptera
Reduviidae
Triatoma infestans
Triatominae
description Recent experiments demonstrated that most field-collected Triatoma infestans (Klug) (Hemiptera: Reduviidae) adults from northern Argentina either never initiated flight or did so repeatedly in both sexes. This pattern could not be explained by sex, adult age, weight, weight-to-length ratio (W/L), or chance. We examined whether bugs that never initiated flight possessed developed flight muscles, and whether flight muscle mass relative to total body mass (FMR) was related to the probability of flight initiation. Approximately half of the adults that never initiated flight had no flight muscles. The absence of flight muscles was 2.4 times more frequent in males than females. Females had significantly larger flight muscle mass than males. For both sexes, the frequency of bugs with no flight muscles was spatially heterogeneous among individual collection sites. A logistic regression model of flight initiation that included both FMR and W/L provided a better fit than models including either one of these predictors. FMR is a novel predictor of flight initiation in Triatominae, with a stronger effect than W/L. The higher frequency of females initiating flight in our experiments may be explained by females having flight muscles more frequently than males, and having FMR and W/L values more suitable for flying. These findings demonstrate that individuals and natural populations of T. infestans can differ dramatically with regard to flight initiation. © 2007 Entomological Society of America.
title Flight muscle dimorphism and heterogeneity in flight initiation of field-collected Triatoma infestans (Hemiptera: Reduviidae)
title_short Flight muscle dimorphism and heterogeneity in flight initiation of field-collected Triatoma infestans (Hemiptera: Reduviidae)
title_full Flight muscle dimorphism and heterogeneity in flight initiation of field-collected Triatoma infestans (Hemiptera: Reduviidae)
title_fullStr Flight muscle dimorphism and heterogeneity in flight initiation of field-collected Triatoma infestans (Hemiptera: Reduviidae)
title_full_unstemmed Flight muscle dimorphism and heterogeneity in flight initiation of field-collected Triatoma infestans (Hemiptera: Reduviidae)
title_sort flight muscle dimorphism and heterogeneity in flight initiation of field-collected triatoma infestans (hemiptera: reduviidae)
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v44_n2_p186_Gurevitz
http://hdl.handle.net/20.500.12110/paper_00222585_v44_n2_p186_Gurevitz
_version_ 1768544854359408640

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