Morphometric analysis of Triatoma dimidiata populations (Reduviidae:Triatominae) from Mexico and Northern Guatemala

Lehmann, Philipp; Ordoñez, Rosalinda; Ojeda-Baranda, Rafael; Lira, Jaime; Hidalgo-Sosa, L; Monroy, Carlota; Ramsey, JM

doi:10.1590/s0074-02762005000500006

Cited by 37 publications

(37 citation statements)

References 10 publications

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“…Such finding was also previously reported for morphological studies with others species like Triatoma dimidiata (Heteroptera: Reduviidae) (Lehmann et al 2005), Podisus mucronatus (Heteroptera: Pentatomidae) (Costello et al 2002), Oxelytrum discicolle (Coleoptera: Silphidae) (Ferreira et al 2006), Oncideres dejeani (Coleoptera: Cerambycidae) (Seffrin et al 2006 Males of P. decempunctatus showed only two body traits larger than the females: antennal length and 2 nd antennal segment length. Males usually have larger antennae than females because they have more sensory sensilla related to their increased capacity of locating females for mating (Chapman 1998).…”

Section: Discussionsupporting

confidence: 88%

Seasonal and interpopulational morphometry variation of Platyscytus decempunctatus (Carvalho 1945) (Heteroptera: Miridae)

et al. 2008

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The analysis with 27 morphological traits was carried out to verify the seasonal influence, differences between sexes and among populations in specimens from Viçosa. The females of P. decempunctatus collected in Viçosa were larger than the males in most of the traits evaluated in both seasons (dry and wet). The males showed only two body traits larger than the females. Interpopulational morphometry differences of P. decempunctatus were significantly correlated with geographic distance among sampling sites. Resumo: Foi realizado um estudo morfométrico com Platyscytus decempunctatus (Carvalho 1945) coletados durante as estações seca e úmida no município de Viçosa, MG e em 23 municípios distribuídos pelos estados de Minas Gerais e Rio de Janeiro. Foram utilizados 30 machos e 30 fêmeas por estação no estudo de Viçosa e insetos adicionais (20 machos e 20 fêmeas) de cada um dos 23 municípios amostrados. Foram analisadas 27 características morfológicas a fim de verificar a influência sazonal e diferenças no dimorfismo sexual em indivíduos de Viçosa e diferenças entre as populações amostradas. As fêmeas de P. decempunctatus coletadas em Viçosa foram maiores que os machos na maioria das características avaliadas em ambas as estação (seca e úmida). Os machos apresentaram somente duas características corporais maiores que as fêmeas. Diferenças morfométricas interpopulacionais em P. decempunctatus se correlacionaram à distância geográfica entre os locais de coleta. Palavras-chave: Platyscytus decempunctatus, morfometria, caracteres sexuais secundários, dissimilaridade.

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Section: Discussionsupporting

confidence: 88%

Seasonal and interpopulational morphometry variation of Platyscytus decempunctatus (Carvalho 1945) (Heteroptera: Miridae)

et al. 2008

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“…12,13 To date, a single taxonomic group, referred to as ITS-2 group 2, has been identified in Veracruz, 12 and may correspond to a distinct morphotype compared with that of the Yucatan peninsula. 14 The aim of this study was to characterize the dynamics of house infestation by T. dimidiata in central Veracruz and its feeding sources. This information is of key importance for the understanding of T. cruzi transmission in the region and for the design of effective vector control interventions.…”

Section: Introductionmentioning

confidence: 99%

House Infestation Dynamics and Feeding Sources of Triatoma dimidiata in Central Veracruz, Mexico

Torres-Montero

López‐Monteon²,

Dumonteil³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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Abstract. Chagas disease is endemic in the state of Veracruz, Mexico, and we investigated here the dynamics of house infestation by Chagas disease vectors to understand disease transmission and design effective control interventions. Bug collections in 42 rural villages confirmed the widespread distribution of Triatoma dimidiata in central Veracruz. Unexpectedly, collection data further indicated a clear pattern of seasonal infestation by mostly adult bugs. Analysis of feeding sources with a polymerase chain reaction-heteroduplex assay indicated a frequent feeding on humans, in agreement with the high seroprevalence previously observed. Feeding sources also confirmed a significant dispersal of bugs between habitats. High dispersal capabilities and seasonal infestation may thus be a shared characteristic of several of the T. dimidiata sibling species from this complex. It would thus be critical to adapt vector control interventions to this behavior to improve their efficacy and sustainability, as the control of T. dimidiata has been notoriously challenging.

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“…La morfometría geométrica (Bookstein 1991, Rohlf & Marcus 1993, Adams et al 2004, Zieldich et al 2004) ha sido utilizada en insectos de importancia médica como flebotominos, mosquitos y triatóminos, para diferenciar poblaciones domiciliadas y silvestres, en estudios ontogéneticos (Dujardin et al 1997, 1998, Feliciangeli et al 2007, Soto-Vivas et al 2007, Gonacalves 2008, análisis de variaciones altitudinales (Belen et al 2004), para detectar diferencias en poblaciones de campo y colonia , o entre diferentes regiones geográficas (Monroy et al 2003, Lehmann et al 2005, Yurtas et al 2005), e inclusive como herramienta taxonómica en la discriminación de especies (Matias et al 2001, Calle et al 2002, 2008. Las herramientas morfométricas han demostrado su utilidad en la discriminación de insectos vectores que no pueden identificarse por medio de caracteres morfológicos tradicionales, así como en estudios de variabilidad intra-específica (Dujardin et al 1997, 1998, Rubio-Pallis 1998, Calle et al 2002, 2008, Yurtas et al 2005.…”

Section: Introductionunclassified

Morfometría geométrica y filogenia en Rhodniini (Hemiptera, Reduviidae) de Venezuela

Soto-Vivas¹,

Liria

Luna

2011

AZM

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. 2011. Morfometría geométrica y filogenia en Rhodniini (Hemiptera, Reduviidae) de Venezuela. Acta Zool. Mex. (n. s.), 27(1): 87-102. RESUMEN. La tribu Rhodniini incluye los géneros Rhodnius Stål y Psammolestes Bergroth. Evidencias enzimática y molecular sugieren la monofilia de la tribu. La mayoría de las especies son selváticas encontrándose en palmas y en nidos de aves. Tradicionalmente ambos géneros fueron considerados grupos relacionados; no obstante, estudios moleculares cuestionan la monofilia de Rhodnius. El objetivo fue analizar filogenéticamente la variación morfométrica en la arquitectura alar, como apoyo a la taxonomía y sistemática en Rhodniini. Se fotografiaron 524 alas de cinco representantes de Rhodniini: Psammolestes arthuri (Pinto) (n = 89), Rhodnius pictipes Stål, (n = 21), R. robustus Larrousse (n = 24), R. prolixus Stål, (n = 16) y R. neivai Lent (n = 22). Como grupos externos se estudiaron cuatro representantes de Triatomini: Eratyrus mucronatus Stål (n = 15), Panstrongylus rufotuberculatus (Champion) (n = 45), P. geniculatus (Latreille) (n = 183) y Triatoma maculata (Erichson) (n = 109). Se registraron configuraciones de coordenadas (x, y) y se alinearon mediante Análisis Generalizado de Procrustes. Se efectuaron Análisis de Covarianza con proporción de grupos re-clasificados y MANOVA. Luego, las variables de la forma alar (intervalos de confianza de las deformaciones relativas) y el tamaño del centroide se analizaron cladísticamente. Los análisis estadísticos de varianza no encontraron diferencias significativas (Kruskal-Wallis) en el tamaño isométrico del ala en las especies P. arthuri -R. neivai -R. pictipes; R. robustus -R. prolixus -T. maculata y entre P. rufotuberculatus -P. geniculatus. La reclasificación a posteriori fue perfecta para E. mucrunatus 100% y R. pictipes, seguidas de T. maculata con 96%, R. neivai 95%, P arthuri 93.2%; R. prolixus 87.5%, P. geniculatus 87.4%, P. rufotuberculatus 84.4%, y R. robustus 76%. Los análisis cladísticos con parsimonia seleccionaron dos árboles de mínima longitud (L = 4.461 IC = 0.973 e IR = 0.979). El consenso estricto muestra la monofilia de Panstrongylus (rufotuberculatus + geniculatus) y Triatoma + Rhodniini (Rhodinus + Psammolestes), pero internamente la parafilia de Rhodnius respecto a Psammolestes. Estos resultados son congruentes con análisis molecu-

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Morphometric analysis of Triatoma dimidiata populations (Reduviidae:Triatominae) from Mexico and Northern Guatemala

Cited by 37 publications

References 10 publications

Seasonal and interpopulational morphometry variation of Platyscytus decempunctatus (Carvalho 1945) (Heteroptera: Miridae)

Seasonal and interpopulational morphometry variation of Platyscytus decempunctatus (Carvalho 1945) (Heteroptera: Miridae)

House Infestation Dynamics and Feeding Sources of Triatoma dimidiata in Central Veracruz, Mexico

Morfometría geométrica y filogenia en Rhodniini (Hemiptera, Reduviidae) de Venezuela

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