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https://www.arca.fiocruz.br/handle/icict/11656
MORPHOLOGICAL FEATURES OF THE HEART OF SIX MOSQUITO SPECIES BY SCANNING ELECTRON MICROSCOPY
Pericardial cells
Alary muscles
Aedes albopictus
Aedes aegypti
Aedes fluviatilis
Culex quinquefasciatus
Anopheles darlingi
Anopheles aquasalis
Affilliation
Universidade Federal de Viçosa. Departamento de Biologia Geral. Viçosa, MG, Brazil
Kansas State University. Department of Entomology. Manhattan, KS, USA
Fundação Oswaldo Cruz. Centro de Pesquisa René Rachou. Laboratório de Entomologia Médica. Belo Horizonte, MG, Brazil
Kansas State University. Department of Entomology. Manhattan, KS, USA
Fundação Oswaldo Cruz. Centro de Pesquisa René Rachou. Laboratório de Entomologia Médica. Belo Horizonte, MG, Brazil
Abstract
The circulatory system in insects is formed by a dorsal vessel (heart) that is a tubular structure that pumps haemolymph in the insect body cavity. Up until now, much is known about the structural organization of the heart in certain Brachycera (Diptera) (e.g. Drosophila). In contrast, little information is available regarding members of the Nematocera suborder (e.g. mosquitoes), in spite of their relevance to human health. Considering their importance, details of the heart morphology of six mosquito species (Aedes albopictus, Ae. aegypti, Ae. fluviatilis, Culex quinquefasciatus, Anopheles darlingi and An. aquasalis) were investigated by scanning electron microscopy (SEM). The heart of the adult mosquitoes, both males and females, consists of a dorsal tubular structure in association with pericardial cells located alongside the heart and alary muscles displaying ramifications that extend from the body wall to the heart surface. The SEM analysis also revealed in detail the organization of the heart, including paired valves on the heart wall (ostia). This study provides a detailed analysis of the mosquito heart microanatomy and, in our view, represents a significant contribution towards the understanding of structural–functional relationships associated with the heart of mosquito.
Keywords
HeartPericardial cells
Alary muscles
Aedes albopictus
Aedes aegypti
Aedes fluviatilis
Culex quinquefasciatus
Anopheles darlingi
Anopheles aquasalis
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