Comparative descriptions of eggs from three species of Rhodnius (Hemiptera: Reduviidae: Triatominae)

Santos, Carolina Magalhães dos; Jurberg, José; Galvão, Cléber; Rosa, João Aristeu da; Júnior, Walter Ceretti; Barata, J. M. S.; Obara, Marcos Takashi

doi:10.1590/s0074-02762009000700013

Cited by 18 publications

(9 citation statements)

References 19 publications

(30 reference statements)

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“…As for the morphological characters, no differences were recorded. On the other hand, it should be noted that morphological differences were found by Barata (1981) in eggs of 10 Rhodnius species, by Santos et al (2009) in three species, by Rosa et al (2012) in the description of R. montenegrensis and by Santos et al (2016) when describing R. marabaensis .…”

Section: Discussionmentioning

confidence: 96%

A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

Rosa

Justino

Nascimento

et al. 2017

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Section: Discussionmentioning

confidence: 96%

A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

Rosa

Justino

Nascimento

et al. 2017

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“…We focused here on the taxonomic interest of eggs according to their viability. The use of eggs is relevant because, in some cases, only eggs (and nymphs) are found in human dwellings [ 46 ], and eggs were recently shown to be highly discriminant between species and populations [ 32 , 36 ].…”

Section: Discussionmentioning

confidence: 99%

Triatominae: does the shape change of non-viable eggs compromise species recognition?

et al. 2018

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BackgroundEggs have epidemiological and taxonomic importance in the subfamily Triatominae, which contains Chagas disease vectors. The metric properties (size and shape) of eggs are useful for distinguishing between close species, or different geographical populations of the same species.MethodsWe examined the effects of egg viability on its metric properties, and the possible consequences on species recognition. Four species were considered: Panstrongylus chinai, P. howardi and Triatoma carrioni (tribe Triatomini), and Rhodnius ecuadoriensis (tribe Rhodniini). Digitization was performed on pictures taken when the viability of the egg could not clearly be predicted by visual inspection. We then followed development to separate viable from non-viable eggs, and the metric changes associated with viability status of the eggs were tested for species discrimination (interspecific difference).ResultsThe shape of the complete contour of the egg provided satisfactory species classification (95% of correct assignments, on average), with improved scores (98%) when discarding non-viable eggs from the comparisons. Using only non-viable eggs, the scores dropped to 90%. The morphometric differences between viable and non-viable eggs were also explored (intraspecific comparison). A constant metric change observed was a larger variance of size and shape in non-viable eggs. For all species, larger eggs, or eggs with larger operculum, were more frequently non-viable. However, these differences did not allow for an accurate prediction regarding egg viability.ConclusionsThe strong taxonomic signal present in egg morphology was affected by the level of viability of the eggs. The metric properties as modified in non-viable eggs presented some general trends which could suggest the existence of an optimum phenotype for size and for shape. Globally, viable eggs tended to have intermediate or small sizes, and presented a less globular shape in the Triatomini, or a relatively wider neck in Rhodnius ecuadoriensis.Electronic supplementary materialThe online version of this article (10.1186/s13071-018-3104-1) contains supplementary material, which is available to authorized users.

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“…al. 78 1996;ROSA et al, 2000;OBARA, 2003;OBARA et al, 2007b;2007c;SANTOS et al, 2009 Costa Neto (2002) Sendo: Ti = soma dos valores da i -ésima amostra; T = soma total dos valores; Q = soma total dos quadrados.…”

Section: E Processo Do I Urotergito (Osório-quintero 2002)unclassified

Caracterização de resistência a inseticidas em populações da subfamilia Triatominae (Hemiptera:Reduviidae), vetores de Trypanosoma cruzi Chagas, 1909

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Comparative descriptions of eggs from three species of Rhodnius (Hemiptera: Reduviidae: Triatominae)

Cited by 18 publications

References 19 publications

A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

Triatominae: does the shape change of non-viable eggs compromise species recognition?

Caracterização de resistência a inseticidas em populações da subfamilia Triatominae (Hemiptera:Reduviidae), vetores de Trypanosoma cruzi Chagas, 1909

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