Scanning electron microscopy of the eggs of Aedes scapularis from southern South America

Journal of the American Mosquito Control Association
Jacenir Reis Dos Santos-MalletCarlos Brisola Marcondes

Abstract

The eggs of Aedes scapularis analyzed by scanning electron microscopy are black and elliptical in outline, measuring approximately 620.4 +/- 16.74 microm long and 163.7 +/- 16.90 microm (n = 10) wide, with an egg index (length/width ratio) of 3.79. The anterior extremity tapered abruptly from a width of 51.6 microm, while such tapering was more gradual at the posterior extremity, from a width of 61.4 microm. The ventral surface of the chorionic coating presented cells with a tubular aspect containing tubercles in rows at a density of 5 to 9 per cell with 2 different sizes, the largest measuring 7.23 +/- 0.98 microm in a longitudinal diameter and the smallest 4.15 +/- 0.53 microm (n = 30). In the dorsal region, the external chorionic reticulum had a porous appearance, and its thickness ranged from 2.5 to 4.1 microm. Isolated tubercles presented wide variation per cell. In the central region of some chorionic cells were tubercles of greater diameter, characterized as central tubercles of 8.45 +/- 0.67 microm, and around them 3 to 5 smaller tubercles measuring 2.57 +/- 0.26 microm. The micropylar apparatus presented a collar with a very evident molding and edges with defined margins for the transition area and a thickness of aroun...Continue Reading

References

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Aug 12, 1998·Memórias do Instituto Oswaldo Cruz·N LabartheR Lourenço-de-Oliveira
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Oct 29, 2005·Journal of the American Mosquito Control Association·John F Reinert
Mar 2, 2006·Journal of the American Mosquito Control Association·Jeronimo AlencarJacenir R Santos-Mallet
Apr 29, 2008·Journal of the American Mosquito Control Association·Jeronimo AlencarJacenir Reis Dos Santos-Mallet
Sep 23, 2009·Journal of Medical Entomology·Jacenir Reis Dos Santos-MalletCarlos Brisola Marcondesa

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Citations

Dec 14, 2011·Micron : the International Research and Review Journal for Microscopy·Juliana Barreto PachecoJeronimo Alencar
Apr 12, 2017·Journal of Medical Entomology·Cássio Lázaro Silva InácioMaria de Fátima Freire de Melo Ximenes
Dec 11, 2019·Journal of Medical Entomology·Francisco Augusto da Silva FerreiraWanderli Pedro Tadei
Oct 15, 2021·Parasites & Vectors·Ana Paula Miranda Mundim-PomboMaria Angélica Miglino

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Methods Mentioned

BETA
scanning electron microscopy
optical microscopy

Software Mentioned

Insinooritoimisto

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