Scanning Electron Microscopy of Mosquitoes: II. The egg surface structure of 13 species of Aedes from Taiwan

Matsuo, Kikuo; Yoshida, Yukio; Lien, Jin‐Cherng

doi:10.1093/jmedent/11.2.179

Cited by 35 publications

(27 citation statements)

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“…The structural features of the eggshells of Aedes aegypti revealed by this study are essentially similar to those described by Horsfall et al (1970), Burst (1974), Matsuo et al (1974), and Olson and Meola (1976). However, the presence of horizontal struts connecting the large and small papillae and small aeropyles in the large papillae of the exochorion in Aedes eggs has not been previously reported.…”

Section: Discussionsupporting

confidence: 85%

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Toxic Effect of Garlic Extracts on the Eggs of Aedes aegypti (Diptera: Culicidae): A Scanning Electron Microscopic Study

Jarial¹

2001

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The surface features of the eggs of Aedes aegypti (L.) and the effect of garlic extracts on their hatching were studied by scanning electron microscopy. The exochorion and endochorion layers of the eggshells display an essentially pentagonal reticulation. The exochorion meshwork exhibits large and small papillae interconnected by horizontal struts. At higher magnification, the large papillae show aeropyles on their rough surface. Eggs hatched in deionized water undergo complete fracture near the anterior poles producing free shell caps. In contrast, eggs placed in 6% reconstituted Kyolic garlic extract are only partially fractured, display attached shell caps, and the larvae remain trapped within the shells. In the natural garlic bulb extract, the eggs show no fracture lines in their shells. No larvae were observed either alive or dead in the garlic extracts, suggesting the embryos were disabled before they could escape from their eggshells as viable larvae. It is concluded that aqueous extracts of garlic inhibit hatching of Aedes eggs. Thus, compounds in garlic may be beneficial in the control of mosquitoes.

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Section: Discussionsupporting

confidence: 85%

“…The chorionic sculpturing patterns of the eggs revealed by these investigations have proved useful in the identiÞcation of different genera and species of mosquitoes (Hinton 1968, Horsfall et al 1970, Burst 1974, Matsuo et al 1974, Somboon et al 2000.…”

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confidence: 99%

Toxic Effect of Garlic Extracts on the Eggs of Aedes aegypti (Diptera: Culicidae): A Scanning Electron Microscopic Study

Jarial¹

2001

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“…formosensis (Yamada), and Oc. japonicus (Matsuo et al 1972(Matsuo et al , 1974. Two more complete descriptions exist for the eggs of Oc.…”

Section: Partial Descriptions Of Finlaya Species Eggs Exist Formentioning

confidence: 99%

“…japonicus specimens examined did not exhibit the mid-ventral strip of cells along the dorsal-ventral transition zone. Of the seven Finlaya species for which partial and/or complete descriptions exist, there are noticeable differences in the Þne structure of the eggs (Matsuo et al 1972, 1974, Linley et al 1991. Further work within this subgenus is needed to determine further differentiating characteristics.…”

Section: Partial Descriptions Of Finlaya Species Eggs Exist Formentioning

confidence: 99%

Description of the Egg ofOchlerotatus japonicus japonicus(Diptera: Culicidae) Using Variable Pressure Scanning Electron Microscopy

Haddow¹,

Moulton

Gerhardt

et al. 2009

J Med Entomol

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The egg of Ochlerotatus japonicus japonicus (Theobald) is described with the aid of variable pressure scanning electron micrographs. The egg is black, cigar shaped, and tapers ventrally. The length is approximately 591 microm and the width is approximately 172 microm. The outer chorionic cells are irregular in shape, either hexagonal or pentagonal, and decrease in size toward the anterior and posterior poles. Ventral tubercles typically range from three to six and contact the chorionic reticulum. Dorsal tubercles contain two large tubercles with small oval-shaped tubercles grouped around them. A large thread-shaped tubercle extends from this grouping either as a single tubercle or as a series of connected tubercles. The micropylar collar is low and discontinuous and is seldom complete. This description will aid researchers in the identification of this invasive vector species.

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“…Matsuo et al (1974) observed that the chorionic cells of Stegomyia aegypti (L.) and Stegomyia pseudalbopicta Borel have a large papilla in the central area and small tubercles on the periphery. In Haemagogus tropicalis Cerqueira & Antunes, there are always one or two tubercles of greater diameter in the central area, surrounded by smaller tubercles on the periphery, a characteristic that differentiates this species from others in the genus Hemagogus (Alencar et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Scanning Electron Microscopy of the Egg of Ochlerotatus albifasciatus (Diptera: Culicidae)

Santos-Mallet

Gleiser

Alencar

et al. 2009

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Ochlerotatus albifasciatus (Macquart) (Diptera: Culicidae) is a mosquito species of medical and veterinary importance, usually associated with temporary groundwater habitats. Eggs obtained from females collected in Córdoba city, in the center of Argentina, were studied using scanning electron microscopy. The eggs are elliptical in outline, measuring approximately 615.7 +/- 37.24 microm in length (1) and 180.7 +/- 22.87 microm in width (w), with an egg index (l/w ratio) of 2.9-3.7. The outer chorionic sculpture has racquet-shaped and wristwatch-shaped cells consisting of a small central tubercle surrounded by larger tubercles and followed by a row of smaller tubercles on one or both sides, respectively, although variations between regions of the egg were observed. The micropylar apparatus has a collar with evident molding and edges of determined length, albeit irregular, with defined margins for the transition area and a thickness of approximately 10.7 microm. The margins of the micropylar disc are raised and the disc measures approximately 21.1 microm in diameter. The micropyle is distinct.

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Scanning Electron Microscopy of Mosquitoes: II. The egg surface structure of 13 species of Aedes from Taiwan

Cited by 35 publications

References 0 publications

Toxic Effect of Garlic Extracts on the Eggs of <I>Aedes aegypti</I> (Diptera: Culicidae): A Scanning Electron Microscopic Study

Toxic Effect of Garlic Extracts on the Eggs of <I>Aedes aegypti</I> (Diptera: Culicidae): A Scanning Electron Microscopic Study

Description of the Egg ofOchlerotatus japonicus japonicus(Diptera: Culicidae) Using Variable Pressure Scanning Electron Microscopy

Scanning Electron Microscopy of the Egg of <I>Ochlerotatus albifasciatus</I> (Diptera: Culicidae)

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