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.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1603/033.046.0102 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Fine-scale associations between land cover composition and the oviposition activity of native and invasive (Diptera: Culicidae) vectors of La Crosse virus.
J Vector Ecol
December 2024
Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, U.S.A.
Land cover is recognized as an important determinant of mosquito community assemblages and pathogen transmission, but few studies have investigated the role of land cover in populations of La Crosse virus (LACV) vectors. La Crosse virus is a zoonotic disease primarily maintained by native , with accessory transmission by invasive vectors and The objective of this study was to investigate the association between land cover composition and the egg abundances of LACV vectors in a city with endemic LACV transmission. Oviposition cups were deployed at sites ranging from recreational forests to urban areas.
View Article and Find Full Text PDFCommunity efforts to monitor and manage Aedes mosquitoes (Diptera: Culicidae) with ovitraps and litter reduction in east Tennessee.
BMC Public Health
December 2022
Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, USA.
Background: East Tennessee (USA) is burdened by mosquito-borne La Crosse virus disease, but minimal resources for mosquito surveillance, management, or related community education exist in the region. To address these needs, we developed a program to train middle and high school educators in basic medical entomology. The educators then used their skills in the classroom to teach students about La Crosse virus disease and conduct mosquito collection experiments.
View Article and Find Full Text PDFBehavior of Aedes albifasciatus (Diptera: Culicidae) larvae from eggs with different dormancy times and its relationship with parasitism by Strelkovimermis spiculatus (Nematoda: Mermithidae).
Parasitol Res
January 2022
Instituto de Limnología "Dr. Raúl A. Ringuelet, Universidad Nacional de La Plata-CONICET, CCT La Plata, Boulevard 120 y 62 No. 1437, La Plata (B 1900), Buenos Aires, Argentina.
Aedine mosquitoes go through unfavorable periods as dormant eggs. However, extended dormancy times lead to a depletion of egg reserves, which might be partially compensated by changes in larval-feeding behavior. Changes in larval behavior may also be induced by parasitism by mermithids probably as a strategy to reduce the impact of the parasite on the host.
View Article and Find Full Text PDFDifferent Hatching Rates of Floodwater Mosquitoes , and from Different Flooded Environments.
Insects
March 2021
Department of Microbiology, National Veterinary Institute, 75189 Uppsala, Sweden.
In the lower Dalälven region, floodwater mosquitoes cause recurring problems. The main nuisance species is , but large numbers of and also hatch during flooding events. To increase understanding of which environments in the area give rise to mosquito nuisance, soil samples were taken from 20 locations from four environmental categories: grazed meadows, mowed meadows, unkept open grassland areas and forest areas.
View Article and Find Full Text PDFThe North American rock pool mosquito, Aedes atropalpus, has reportedly decreased in abundance following the introduction of Ae. japonicus japonicus to the USA, but the specific mechanisms responsible for the reduction remain unclear. Thus, there is a need for field studies to improve our knowledge of natural rock pool systems where both species co-occur.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!