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Mosquitoes are approximately 3,600 species of small flies comprising the family Culicidae. The word "mosquito" is Spanish for "little fly". Mosquitoes have a slender segmented body, one pair of wings, one pair of halteres, three pairs of long hair-like legs, and elongated mouthparts.
Anopheles is a genus of mosquito first described and named by J. W. Meigen in 1818. About 460 species are recognized; while over 100 can transmit human malaria, only 30–40 commonly transmit parasites of the genus Plasmodium, which cause malaria in humans in endemic areas. Anopheles gambiae is one of the best known, because of its predominant role in the transmission of the most dangerous malaria parasite species – Plasmodium falciparum.
Mosquito control manages the population of mosquitoes to reduce their damage to human health, economies, and enjoyment. Mosquito control is a vital public-health practice throughout the world and especially in the tropics because mosquitoes spread many diseases, such as malaria and the Zika virus.
Culex (Culex) tritaeniorhynchus is a species of mosquito and is the main vector of the disease Japanese encephalitis. This mosquito is a native of northern Asia, and parts of Africa. Females target large animals for blood extraction, including cattle and swine, and are strongly anthropophilic.
Mosquito-borne diseases or mosquito-borne illnesses are diseases caused by bacteria, viruses or parasites transmitted by mosquitoes. Nearly 700 million people get a mosquito-borne illness each year resulting in over 725,000 deaths.
Anopheles (Cellia) subpictus is a species complex of four species of mosquito belonging to the genus Anopheles.
Anopheles albimanus is a species of mosquito in the order Diptera. It is found in coastal Central and South America, the Caribbean, and Mexico. It is a generalist species and capable of wide dispersion. A. albimanus is a common malaria vector.
Anopheles stephensi is a primary mosquito vector of malaria in urban India and is included in the same subgenus as Anopheles gambiae, the primary malaria vector in Africa. A. gambiae consists of a complex of morphologically identical species of mosquitoes, along with all other major malaria vectors; however, A. stephensi has not yet been included in any of these complexes. Nevertheless, two races of A. stephensi exist based on differences in egg dimensions and the number of ridges on the eggs; A. s. stephensisensu stricto, the type form, is a competent malaria vector that takes place in urban areas, and A. s. mysorensis, the variety form, exists in rural areas and exhibits considerable zoophilic behaviour, making it a poor malaria vector. However, A. s. mysorensis is a detrimental vector in Iran. An intermediate form also exists in rural communities and peri-urban areas, though its vector status is unknown. About 12% of malaria cases in India are due to A. stephensi.
Anopheles barbumbrosus is a species complex of mosquito belonging to the genus Anopheles. It has 12-36 thin attenuated branches usually loose and separated out, which is a good indication to separate it from A. barbirostris. It shows a marked zoophilic tendency, thus is a malaria vector, but with minor importance to humans. It is distributed throughout Peninsular Malaysia, Sumatra, Java, Thailand, India and Sri Lanka, They mostly live as an outdoor mosquito species, rarely found indoor places. Larva can be found in a variety of habitats including both partially shaded and sunlit fresh and slowly running water, grass-fringed streams to stagnant water pools and man-made place like rice fields.
Anopheles (Cellia) karwari is a species complex of zoophilic mosquito belonging to the genus Anopheles. It is found in India, and Sri Lanka, Bangladesh, Sumatra, and Java. A. karwari is a member of the Maculatus Group and the second scarcest species reported from Indonesia. Female is blood sucking and involved in transmitting Plasmodium falciparum, thus an important malarial vector. It is considered a secondary vector in the Australian region, but its vectorial status in South-East Asia was unknown.
Anopheles (Anopheles) nigerrimus is a species complex of zoophilic mosquito belonging to the genus Anopheles. It belongs to the Nigerrimus Subgroup and Hyrcanus Group of the Myzorhynchus Series. It is found in India, and Sri Lanka, Bangladesh, Brunei, Cambodia, China, Malaysia, Myanmar, Nepal, Pakistan, Thailand, and Vietnam. It is a Possible malaria and filariasis vector. It is found from ecosystems nearby water courses such as rice fields, canals, large open marshes, and also in partially sunny, shady deep pools with floating vegetation. In Sri Lanka, the adult and larval stages are known to show resistant to a range of organophosphate and carbamate insecticides. Cytologically, two karyotypic forms of A. nigerrimus are identified, as Form A and B.
Anopheles pallidus is a species complex of mosquito belonging to the genus Anopheles. It is found in India, and Sri Lanka and Myanmar. It is a potential natural vector of bancroftian filariasis in Sri Lanka as well as Malaria and Babesiosis in other countries.
Anopheles (Cellia) tessellatus is a species complex of zoophilic mosquito belonging to the genus Anopheles. It is found in India, and Sri Lanka, Bangladesh, Cambodia, China, Indonesia, Malaysia, Laos, Maldives, Myanmar, Nepal, Philippines, Taiwan, Thailand and Vietnam. It is first described from Sri Lanka. Larvae are known to found from dirty stagnant water in sun or shady habitats. Adults are zoophilic. It is not regarded as a malaria vector, but is a secondary vector of Wuchereria bancrofti in Maldives.
Anopheles (Cellia) varuna is a species complex of zoophilic mosquito belonging to the genus Anopheles. It is found in India, Sri Lanka Thailand and Vietnam. It is a secondary malaria vector in Sri Lanka. Larvae are known to feed on detritus, rod and cocci bacteria, diatom, filamentous algae and desmids. A microsporidium Thelohania obscura was discovered from the larvae in India in 1966.
Culex (Lutzia) fuscanus is a species of mosquito belonging to the genus Culex. It is found in China, India, Indonesia and Sri Lanka They are natural predators of disease causing mosquito larva such as Aedes aegypti, Anopheles subpictus, and Culex tritaeniorhynchus.
Culex (Culex) gelidus is a species of mosquito belonging to the genus Culex. It is found in India, Sri Lanka, Bangladesh, Cambodia, China, Hong Kong, India, Indonesia, Japan, Laos, Malaysia, Myanmar, Nepal, New Guinea (Island); Papua New Guinea, Pakistan, Philippines, Taiwan, Thailand, Vietnam. In 1976, it was identified as a major vector of Japanese encephalitis virus, in India. From an experiment, it was evident that aqueous solution of Calotropis gigantea leaves possess larvicidal activity, mosquito repellent activity and ovicidal activity against Culex gelidus.
Culex (Culex) pseudovishnui is a species complex of mosquito belonging to the Culex vishnui group of the genus Culex. It is found in Bangladesh, Cambodia, China, Hong Kong, India, Indonesia, Iran, Iraq, Japan, South Korea, Laos, Macau, Malaysia, Nepal, New Guinea (Island); Papua New Guinea, Pakistan, Philippines, Singapore, Sri Lanka, Thailand, Taiwan and Vietnam. It is a major vector of West Nile virus, and Japanese encephalitis virus Larvae can be found from the edges of rice fields. Adults can bite vertebrates from both indoor and outdoor places with a peak biting time on 7pm onwards.
Anopheles freeborni, commonly known as the western malaria mosquito, is a species of mosquito in the family Culicidae. It is typically found in the western United States and Canada. Adults are brown to black, with yellow-brown hairs and gray-brown stripes on the thorax. Their scaly wings have four dark spots, which are less distinct in the male.
Global climate change has resulted in a wide range of impacts on the spread of infectious diseases. Like other ways in which climate change affects on human health, climate change exacerbates existing inequalities and challenges in managing infectious disease. Infectious diseases whose transmission can be impacted by climate change include dengue fever, malaria, tick-borne diseases, leishmaniasis and Ebola virus disease. For example, climate change is altering the geographic range and seasonality of the mosquito that can carry dengue.
Anopheles atroparvus is a European species of mosquito, which was first identified in 1927. It is one of the most abundant palearctic Anopheles species belonging to the family Culicidae, commonly called mosquitoes. Although research interest in A. atroparvus has been low in the past several decades, recent concern for an increase in vector-borne disease has encouraged new research into this species.
References
- ↑ "An annotated checklist of mosquitoes of Sri Lanka" (PDF). Man and Biosphere Reserve of Sri Lanka. Archived from the original (PDF) on 25 June 2016. Retrieved 30 January 2017.
- ↑ Dhiman, Sunil; Yadav, Kavita; Rabha, Bipul; Goswami, Diganta; Hazarika, S.; Tyagi, Varun (2016). "Evaluation of Insecticides Susceptibility and Malaria Vector Potential of Anopheles annularis s.l. and Anopheles vagus in Assam, India". PLOS ONE. 11 (3): e0151786. doi: 10.1371/journal.pone.0151786 . PMC 4807056 . PMID 27010649.
- ↑ Olson, JG; Ksiazek, TG; Lee, VH; Tan, R; Shope, RE (1985). "Isolation of Japanese encephalitis virus from Anopheles annularis and Anopheles vagus in Lombok, Indonesia". Trans R Soc Trop Med Hyg. 79 (6): 845–7. doi:10.1016/0035-9203(85)90135-x. PMID 3832495.