Aedes Mosquitoes

Aedes Mosquitoes

Introduction

Of all the known species of mosquitoes with health importance public, Aedes aegypti Linnaeus, 1762 is considered the most dangerous to have the ability to transmit the greater number of arboviral diseases men. Traditionally the mosquito Aedes aegypti has been known as the "yellow fever mosquito," which for centuries was a serious disease in tropical America and Africa, it extended during temperate summers, causing epidemics with high mortality ports and towns nearby. Currently, there is an increase in cases in the America; there are some outbreaks of yellow fever in Bolivia, Brazil, Peru, Ecuador, Colombia, Venezuela, F. Guiana and Trinidad and Tobago. In Colombia there have been outbreaks in rural populations. Despite migration of patients in vermeil phase to cities and highly infested villages near Aedes aegypti, in the last four decades there has been urban transmission on the continent, are unknown causes (Smolinski, 2003).

Aedes is a genus of mosquito Culicoides common worldwide and especially in tropical and subtropical areas. The name comes from the Greek Aedes, which means hateful. It is transmitted, among other diseases, yellow fever, the dengue and canine heartworm. In Polynesia, polynesiensis Aedes transmits filariasis lymphatic produced by Brugia and other nematodes related. Aedes mosquitoes often have black and white bands on body and legs but can also have other colors. While some scientists argue that some of the species should be transferred to the genus Stegomyia, having elevated this subgenus to genus level, most of the scientific community maintains the previous nomenclature.

The tiger mosquito (Aedes albopictus) is a species of Diptera nematócero belonging to the family Culicidae . It is characterized by its black color with white ornamentation chest and belly, legs black and white bands and a conspicuous white central longitudinal chest and head. It has a length of between about 5 and 10 mm. As other species of mosquitoes, the female has a long and slender tube, the proboscis, so that a stylet, used to chop and draw blood from vertebrates, especially mammals and birds, which harnesses for the development of the eggs mode proteins, uses tiny hairs (whiskers) on the sides of the proboscis to detect carbon dioxide (CO2) from animals or people who lurk in their bites an anticoagulant substance used to extract and store the blood of its host. The males of the species, like that of other mosquitoes feed on nectar. It is included in the list of 100 most harmful invasive alien species in the world of the International Union for Conservation of Nature (Handler, 2000).

Origin

It is believed that this species was introduced to the Americas from that occurred early settler incursions, establishing themselves mainly in the tropics and subtropics, its distribution was limited by latitudes 45 ° N and 35 ° S, has been found at sites of high and cold initially recognized. In Mexico has caused outbreaks dengue fever to the 1.760 meters.

The tiger mosquito is an invasive species native to Southeast Asia, having spread through Africa, America and Europe from 1979 and later ...