Author | Bahia, Ana Cristina | |
Author | Secundino, Nágila Francinete Costa | |
Author | Miranda, José Carlos | |
Author | Prates, Deboraci Brito | |
Author | Souza, Ana Paula Almeida de | |
Author | Fernandes, Fernando de Freitas | |
Author | Barral, Aldina Maria Prado | |
Author | Pimenta, Paulo Filemon Paolucci | |
Access date | 2014-12-19T18:43:50Z | |
Available date | 2014-12-19T18:43:50Z | |
Document date | 2007 | |
Citation | BAHIA, A. C. et al. Ultrastructural comparison of external morphology of immature stages of Lutzomyia (Nyssomyia) intermedia and Lutzomyia (Nyssomyia) whitmani (Diptera: Psychodidae), vectors of cutaneous leishmaniasis, by scanning electron microscopy. Journal of Medical Entomology, v. 44, n. 6, p. 903-914, 2007. | pt_BR |
ISSN | 0022-2585 | |
URI | https://www.arca.fiocruz.br/handle/icict/9232 | |
Language | eng | pt_BR |
Publisher | Entomological Society of America | pt_BR |
Rights | open access | pt_BR |
Title | Ultrastructural comparison of external morphology of immature stages of Lutzomyia (Nyssomyia) intermedia and Lutzomyia (Nyssomyia) whitmani (Diptera: Psychodidae), vectors of cutaneous leishmaniasis, by scanning electron microscopy. | pt_BR |
Type | Article | pt_BR |
Abstract | Lutzomyia (Nyssomyia) intermedia (Lutz & Neiva 1912) and Lutzomyia (Nyssomyia)
whitmani (Antunes & Coutinho 1939) (Diptera: Psychodidae) are vectors of American
cutaneous leishmaniasis in several endemic regions of Brazil. We analyzed the external morphological
aspects of the immature stages of these two vectors by using scanning electron microscopy.
In general, the larval stages of the two species are morphologically similar, although some
differences were noted. Detailed examination of the eggs of both species revealed similar
exchorionic ornamentations of unconnected parallel ridges. The larval head capsules are well
deÞned, heavily sclerotized, and bear prominent chewing mouthparts. The abdominal segments
are easily recognized by the presence of prolegs on their ventral surfaces. The morphology of the
anal lobe on the terminal abdominal segment differs between the two species. We found the
following three types of sensillae inserted on the antennae: 1) clavate basiconic; 2) small, blunt
coeloconic; and 3) multipourous clavate coleoconic. In addition; Þve subtypes of trichoid sensillae
were found on the larval body: 1) long, 2) short, 3) curved long, 4) brush-like, and 5) weakly
brush-like. The caudal Þlaments located on the last abdominal segment were recognized as long
trichoid sensillae. We observed pores on the surface of the clavate coelonic sensillae and on the
caudal Þlaments that presumably function as chemoreceptors. The larvae of the two species show
similarities in the lobular-form antennae of L1 larvae, which changes to digitiform in second instar
(L2), L3, and L4. This study demonstrated that the external surface of the eggs and larvae of Lu.
intermedia and Lu. whitmani are morphologically similar, but they can be distinguished by details
in the microanatomy observed by scanning electron microscopy | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Laboratory of Medical Entomology. Belo Horizonte, MG, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Laboratory of Medical Entomology. Belo Horizonte, MG, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório de Imunoparasitologia. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório de Imunoparasitologia. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório de Imunoparasitologia. Salvador, BA, Brasil | pt_BR |
Affilliation | Universidade Federal de Goiás. Instituto de Patologia Tropical e Saúde Pública. Laboratory of Medical and Veterinary Arthropodology. Goiânia, GO, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório de Imunoparasitologia. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Laboratory of Medical Entomology. Belo Horizonte, MG, Brasil | pt_BR |
Subject | Lutzomyi Intermedia | pt_BR |
Subject | Lutzomyi whitmani | pt_BR |
Subject | Immature stages | pt_BR |
Subject | Scanning electron microscopy | pt_BR |
DeCS | Leishmaniose Cutânea/transmissão | pt_BR |
DeCS | Psychodidae/ultraestrutura | pt_BR |
DeCS | Animais | pt_BR |
DeCS | Insetos Vetores | pt_BR |
DeCS | Larva/ultraestrutura | pt_BR |
DeCS | Microscopia Eletrônica de Varredura | pt_BR |
DeCS | Óvulo/ultraestrutura | pt_BR |