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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. 4, 2002, pp. 589-596
Bioline Code: oc02112
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. 4, 2002, pp. 589-596

 en Anopheles albitarsis check for this species in other resources Embryogenesis: Morphological Identification of Major Events
Adelaide Tardin Monnerat; Marcelo Pelajo Machado; Bruno Silva Vale; Maurilio José Soares; José Bento Pereira Lima; Henrique Leonel Lenzi & Denise Valle

Abstract

Anopheles albitarsis check for this species in other resources embryogenesis was analyzed through confocal microscopy of clarified eggs. Using Drosophila melanogaster check for this species in other resources as reference system, the major morphogenetic events (blastoderm, gastrulation, germ band extension, germ band retraction, dorsal closure) were identified. The kinetics of early events is proportionally similar in both systems, but late movements (from germ band retraction on) progress slower in An. albitarsis . Major differences in An. albitarsis related to D. melanogaster were: (1) pole cells do not protrude from the blastoderm; (2) the mosquito embryo undergoes a 180º rotation movement, along its longitudinal axis; (3) the head remains individualized throughout embryogenesis; (4) extraembryonary membranes surround the whole embryo. A novel kind of malaria control is under development and is based on the use of genetically modified mosquitoes. Phenotypic analysis of the embryonic development of mutants will be imposed as part of the evaluation of effectiveness and risk of employment of this strategy in the field. In order to accomplish this, knowledge of the wild type embryo is a prerequisite. Morphological studies will also serve as basis for subsequent development biology approaches.

Keywords
Anopheles check for this species in other resources - malaria vector - embryo - development - mosquito

 
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