Difference between revisions of "Ceratopogonidae"
| Line 32: | Line 32: | ||
==Life cycle== | ==Life cycle== | ||
Eggs are laid onto plants near water and the larvae fall into water and pupate. The life cycle takes '''6-12 months''' to complete in temperate climates, but can take only '''1 month''' in tropical climates. Females of most species are adapted to sucking blood from the host. | Eggs are laid onto plants near water and the larvae fall into water and pupate. The life cycle takes '''6-12 months''' to complete in temperate climates, but can take only '''1 month''' in tropical climates. Females of most species are adapted to sucking blood from the host. | ||
| + | |||
| + | ''Culicoides'' take blood meals from vertebrate hosts and breed in damp, dung-enriched soil, and so are abundant in the vicinity of domestic livestock. Once eggs are laid in the soil, ''Culicoides'' larvae progress through four stages and pupate before becoming an adult midge. The lifecycle is greatly influenced by temperature: in temperate regions such as Britain, the adult midge population declines in October and is absent by December. The fourth larval stage overwinters, and adults re-appear the following April. The environmental conditions also affect the activity of midges in several ways. ''Culicoides'' survive around 10 days in warm weather but up to one month when conditions are cooler and are most active at night, from an hour before sunset to an hour after sunrise. Activity is decreased by windy conditions, and increased during the day when the weather is dull. | ||
==Literature Search== | ==Literature Search== | ||
Revision as of 12:42, 6 October 2010
 |
This article has been peer reviewed but is awaiting expert review. If you would like to help with this, please see more information about expert reviewing. |
| Ceratopogonidae | |
|---|---|
| Phylum | Arthropoda |
| Class | Insecta |
| Family | Ceratopogonidae |
| Genus | Culicoides |
Also known as: Midges
The most important veterinary species is Culicoides
Introduction
This parasite is found worldwide and attacks humans and a wide variety of animals. The only genus of the family Ceratopogonidae of current veterinary significance is Culicoides.
The midge is a vector for several viruses, including Bluetongue and African horse sickness.
It causes allergic dermatitis of horses, primarily affecting the base of the tail and the withers, and induces an intermediate-type hypersensitivity reaction to the midge saliva, known as 'Sweet itch'
Identification
Culicoides are small flies 2-5mm long with a dark colouring, more commonly known as biting midges. They have a characteristic arched thorax giving a 'hump-backed' appearance. The wings are mottled.
Life cycle
Eggs are laid onto plants near water and the larvae fall into water and pupate. The life cycle takes 6-12 months to complete in temperate climates, but can take only 1 month in tropical climates. Females of most species are adapted to sucking blood from the host.
Culicoides take blood meals from vertebrate hosts and breed in damp, dung-enriched soil, and so are abundant in the vicinity of domestic livestock. Once eggs are laid in the soil, Culicoides larvae progress through four stages and pupate before becoming an adult midge. The lifecycle is greatly influenced by temperature: in temperate regions such as Britain, the adult midge population declines in October and is absent by December. The fourth larval stage overwinters, and adults re-appear the following April. The environmental conditions also affect the activity of midges in several ways. Culicoides survive around 10 days in warm weather but up to one month when conditions are cooler and are most active at night, from an hour before sunset to an hour after sunrise. Activity is decreased by windy conditions, and increased during the day when the weather is dull.
Literature Search
Use these links to find recent scientific publications via CAB Abstracts (log in required unless accessing from a subscribing organisation).
Ceratopogonidae publications