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Título: | Role of egg buster in hatching of Aedes aegypti: Scanning electron microscopy study |
Autor: | Pereira, Sheila Tavares Secundino, Nagilá Francinete Costa Botelho, Ana Cristina Carvalho Pinheiro, Valéria Cristina Soares Tadel, Wanderly Pedro Pimenta, Paulo Filemon Paolucci |
Palavras-chave: | Aedes Animals Disease Carrier Female Growth, Development And Aging Larva Methodology Oocyte Physiology Microscopy, Electron, Scanning Ultrastructure Aedes Animal Female Insect Vectors Larva Microscopy, Electron, Scanning Ovum Aedes Aegypti Pyrus Communis |
Data do documento: | 2006 |
Revista: | Journal of Medical Entomology |
É parte de: | Volume 43, Número 1, Pags. 68-72 |
Abstract: | Egg hatching has been studied in Aedes aegypti (L.) through scanning electron microscopy. The first sign of egg hatching is a small protrusion on the eggshell in the anterior pole. The larval movement provokes a crack in the eggshell with the egg buster located in the dorsal head. The egg buster provokes a small transverse fissure in the eggshell that gradually increases in the chorion. Then, the rupture is completed around the eggshell. The separation of the anterior pole occurs, showing the dorsal region of the larva head with the egg buster and the cap. After sequential movements, the larva looses the cap. Finally, the first instar is ready to be free showing details of its body with the egg buster over its head. This structure is a cuticular formation, similar to a cone structure that ends in a very fine tip and emerges from a pear-like depression with high rounded borders. Our results describe the anatomy of the egg hatching process in Ac. aegypti showing details of the participation of the egg buster. © 2006 Entomological Society of America. |
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