Mosquito - Revision history

Mukbil at 11:35, 4 August 2021

2021-08-04T11:35:25Z

← Older revision		Revision as of 11:35, 4 August 2021
Line 6:		Line 6:
	All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti'' is an urban species, whereas ''An. albopictus'' prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus'' is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia'' breeds with aquatic plants, while ''Cx. tritaeniorhynchus'' prefers to breed in rice fields.		All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti'' is an urban species, whereas ''An. albopictus'' prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus'' is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia'' breeds with aquatic plants, while ''Cx. tritaeniorhynchus'' prefers to breed in rice fields.

	[[Image:~~MosquitoAnopheles2~~.jpg\|thumb\|right\|Anopheles mosquito]]		[[Image:MosquitoAnopheles.jpg\|thumb\|right\|Anopheles mosquito]]
	Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.		Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.

Mukbil at 11:34, 4 August 2021

2021-08-04T11:34:33Z

← Older revision		Revision as of 11:34, 4 August 2021
Line 6:		Line 6:
	All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti'' is an urban species, whereas ''An. albopictus'' prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus'' is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia'' breeds with aquatic plants, while ''Cx. tritaeniorhynchus'' prefers to breed in rice fields.		All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti'' is an urban species, whereas ''An. albopictus'' prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus'' is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia'' breeds with aquatic plants, while ''Cx. tritaeniorhynchus'' prefers to breed in rice fields.

	[[Image:~~MosquitoAnopheles~~.jpg\|thumb\|right\|Anopheles mosquito]]		[[Image:MosquitoAnopheles2.jpg\|thumb\|right\|Anopheles mosquito]]
	Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.		Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.

Mukbil at 11:33, 4 August 2021

2021-08-04T11:33:47Z

← Older revision		Revision as of 11:33, 4 August 2021
Line 1:		Line 1:
	'''Mosquito''' (''masha'') a blood sucking insect belonging to the order Diptera, family Culicidae. Important genera are ''Anopheles, Culex, Aedes, Mansonia, Psorophora'', and ''Haemagogus''. They are vectors of many diseases, including [[Malaria\|malaria]], filariasis, yellow fever, [[Dengue\|dengue]], viral encephalitis, and dermatobiasis. The female mosquito has needle-like piercing- sucking type of mouthparts and sucks blood from different vertebrate hosts. A blood meal is essential before laying eggs. Males feed on plant juices. Out of a world total of more than 3000 species only about 113 species are recorded in Bangladesh.		'''Mosquito''' (''masha'') a blood sucking insect belonging to the order Diptera, family Culicidae. Important genera are ''Anopheles, Culex, Aedes, Mansonia, Psorophora'', and ''Haemagogus''. They are vectors of many diseases, including [[Malaria\|malaria]], filariasis, yellow fever, [[Dengue\|dengue]], viral encephalitis, and dermatobiasis. The female mosquito has needle-like piercing- sucking type of mouthparts and sucks blood from different vertebrate hosts. A blood meal is essential before laying eggs. Males feed on plant juices. Out of a world total of more than 3000 species only about 113 species are recorded in Bangladesh.

	~~<p align=center style="text-align~~:~~center">~~Aedes mosquito		[[Image:MosquitoAdes.jpg\|thumb\|right\|Aedes mosquito]]

	~~<p align=center style="text-align:center">Anopheles mosquito~~

	Four ''Anopheles'' species namely ''An. dirus, An. philippinensis, An. minimus,'' and ''An. sundaicus'' are established malaria vectors in Bangladesh. The Ministry of Health claims malarial parasite positivity in four more species ''An. aconitus, An. vagus, An. annularis'', and ''An. maculatus var willmorei''. Bangladesh often experiences two malaria peaks a year one in pre-monsoon (May-June) time, another in post-monsoon (Oct-Nov) time. Among the non-malarial diseases, filariasis is transmitted by ''Culex quinquefasciatus'' (bancroftian type), and ''Mansonia'' speices (brugian type); ''Aedes aegypti'' and ''Ae. albopictus'' are suspected to spread Dengue, a viral disease, and a still less known Japanese Encephalitis disease is transmitted by ''Cx. tritaeniorhynchus''.		Four ''Anopheles'' species namely ''An. dirus, An. philippinensis, An. minimus,'' and ''An. sundaicus'' are established malaria vectors in Bangladesh. The Ministry of Health claims malarial parasite positivity in four more species ''An. aconitus, An. vagus, An. annularis'', and ''An. maculatus var willmorei''. Bangladesh often experiences two malaria peaks a year one in pre-monsoon (May-June) time, another in post-monsoon (Oct-Nov) time. Among the non-malarial diseases, filariasis is transmitted by ''Culex quinquefasciatus'' (bancroftian type), and ''Mansonia'' speices (brugian type); ''Aedes aegypti'' and ''Ae. albopictus'' are suspected to spread Dengue, a viral disease, and a still less known Japanese Encephalitis disease is transmitted by ''Cx. tritaeniorhynchus''.

	All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti'' is an urban species, whereas ''An. albopictus'' prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus'' is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia'' breeds with aquatic plants, while ''Cx. tritaeniorhynchus'' prefers to breed in rice fields.		All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti'' is an urban species, whereas ''An. albopictus'' prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus'' is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia'' breeds with aquatic plants, while ''Cx. tritaeniorhynchus'' prefers to breed in rice fields.

			[[Image:MosquitoAnopheles.jpg\|thumb\|right\|Anopheles mosquito]]
	Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.		Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.

Mukbil at 11:31, 4 August 2021

2021-08-04T11:31:43Z

← Older revision		Revision as of 11:31, 4 August 2021
Line 1:		Line 1:
	'''Mosquito''' (''~~mo''''xa~~'') a blood sucking insect belonging to the order Diptera, family Culicidae. Important genera are ''Anopheles, Culex, Aedes, Mansonia, Psorophora'', and'' Haemagogus.'' They are vectors of many diseases, including [[malaria]], filariasis, yellow fever, [[dengue]], viral encephalitis, and dermatobiasis. The female mosquito has needle-like piercing- sucking type of mouthparts and sucks blood from different vertebrate hosts. A blood meal is essential before laying eggs. Males feed on plant juices. Out of a world total of more than 3000 species only about 113 species are recorded in Bangladesh.		'''Mosquito''' (''masha'') a blood sucking insect belonging to the order Diptera, family Culicidae. Important genera are ''Anopheles, Culex, Aedes, Mansonia, Psorophora'', and ''Haemagogus''. They are vectors of many diseases, including [[Malaria\|malaria]], filariasis, yellow fever, [[Dengue\|dengue]], viral encephalitis, and dermatobiasis. The female mosquito has needle-like piercing- sucking type of mouthparts and sucks blood from different vertebrate hosts. A blood meal is essential before laying eggs. Males feed on plant juices. Out of a world total of more than 3000 species only about 113 species are recorded in Bangladesh.



	~~<p align=center style="text-align:center">~~

	~~<p align=center style="text-align:center">~~

	<p align=center style="text-align:center">Aedes mosquito		<p align=center style="text-align:center">Aedes mosquito
Line 11:		Line 5:
	<p align=center style="text-align:center">Anopheles mosquito		<p align=center style="text-align:center">Anopheles mosquito

			Four ''Anopheles'' species namely ''An. dirus, An. philippinensis, An. minimus,'' and ''An. sundaicus'' are established malaria vectors in Bangladesh. The Ministry of Health claims malarial parasite positivity in four more species ''An. aconitus, An. vagus, An. annularis'', and ''An. maculatus var willmorei''. Bangladesh often experiences two malaria peaks a year one in pre-monsoon (May-June) time, another in post-monsoon (Oct-Nov) time. Among the non-malarial diseases, filariasis is transmitted by ''Culex quinquefasciatus'' (bancroftian type), and ''Mansonia'' speices (brugian type); ''Aedes aegypti'' and ''Ae. albopictus'' are suspected to spread Dengue, a viral disease, and a still less known Japanese Encephalitis disease is transmitted by ''Cx. tritaeniorhynchus''.

	Four ''Anopheles ''species namely ''An. dirus, An. philippinensis, An. minimus, ''and ''An. sundaicus ''are established malaria vectors in Bangladesh. The Ministry of Health claims malarial parasite positivity in four more species ''An. aconitus, An. vagus, An. annularis, ''and ''An. maculatus ''var ''~~willmorei~~. ''Bangladesh often experiences two malaria peaks a year one in pre-monsoon (May-June) time, another in post-monsoon (Oct-Nov) time. Among the non-malarial diseases, filariasis is transmitted by ''Culex quinquefasciatus ''(bancroftian type), and ''Mansonia ''speices (brugian type); ''Aedes aegypti ''and ''Ae. albopictus ''are suspected to spread Dengue, a viral disease, and a still less known Japanese Encephalitis disease is transmitted by ''Cx. tritaeniorhynchus''.

	All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti ''is an urban species, whereas ''An. albopictus ''prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus ''is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia ''breeds with aquatic plants, while ''Cx. tritaeniorhynchus ''prefers to breed in rice fields.

	~~Spraying of adulticides has been replaced~~ by the ~~use of bed nets impregnated~~ with ~~Deltamecron~~ in ~~certain areas~~ of Bangladesh. ~~This has minimised~~ the ~~man-mosquito contact significantly~~. ~~Organophosphates (Malathion) are used as larvicides by the Government workers~~, while ~~the city drains are sprayed by malariol or black oil by the municipalities~~. ~~State sponsored spraying programme is often inadequate or ineffective~~.		All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti'' is an urban species, whereas ''An. albopictus'' prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus'' is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia'' breeds with aquatic plants, while ''Cx. tritaeniorhynchus'' prefers to breed in rice fields.

	~~Mosquito experts emphasize more on proper drainage, cleaning marshes and ditches as ways to successful mosquito control~~ in ~~the country. Emptying domestic containers and taking care~~ of ~~natural containers have also been suggested~~. ~~Local scientists have identified several indigenous animal species as predators on~~ mosquito ~~larvae~~. ~~While fishes~~, ~~various aquatic insects, and predatory mosquitoes have shown promising results, indigenous plant products have been found to be lethal to mosquito larvae, and a plant has encouraged workers~~ by ~~its abilities to trap mosquito larvae~~. ~~These biocontrols have been proposed to be included in the national mosquito control~~ programme. ~~[KM Nurul Huda]~~		Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.

			Mosquito experts emphasize more on proper drainage, cleaning marshes and ditches as ways to successful mosquito control in the country. Emptying domestic containers and taking care of natural containers have also been suggested. Local scientists have identified several indigenous animal species as predators on mosquito larvae. While fishes, various aquatic insects, and predatory mosquitoes have shown promising results, indigenous plant products have been found to be lethal to mosquito larvae, and a plant has encouraged workers by its abilities to trap mosquito larvae. These biocontrols have been proposed to be included in the national mosquito control programme. [KM Nurul Huda]

	''See also'' [[~~DENGUE~~]]; [[~~FILARIASIS~~]]; [[~~MALARIA~~]]. ~~[Huda, KM Nurul Professor of Zoology, Chittagong University]~~		''See also'' [[Dengue\|gengue]]; [[Filariasis\|filariasis]]; [[Malaria\|malaria]].

	[[Category:Fauna]]		[[Category:Fauna]]

	[[bn:মশা]]		[[bn:মশা]]

Nasirkhan: Content Updated.

2021-06-18T06:17:50Z

Content Updated.

← Older revision		Revision as of 06:17, 18 June 2021
Line 1:		Line 1:
	~~<p class=Normal >~~'''Mosquito''' (''mo''''xa'') a blood sucking insect belonging to the order Diptera, family Culicidae. Important genera are ''Anopheles, Culex, Aedes, Mansonia, Psorophora'', and'' Haemagogus.'' They are vectors of many diseases, including [[malaria]], filariasis, yellow fever, [[dengue]], viral encephalitis, and dermatobiasis. The female mosquito has needle-like piercing- sucking type of mouthparts and sucks blood from different vertebrate hosts. A blood meal is essential before laying eggs. Males feed on plant juices. Out of a world total of more than 3000 species only about 113 species are recorded in Bangladesh.		'''Mosquito''' (''mo''''xa'') a blood sucking insect belonging to the order Diptera, family Culicidae. Important genera are ''Anopheles, Culex, Aedes, Mansonia, Psorophora'', and'' Haemagogus.'' They are vectors of many diseases, including [[malaria]], filariasis, yellow fever, [[dengue]], viral encephalitis, and dermatobiasis. The female mosquito has needle-like piercing- sucking type of mouthparts and sucks blood from different vertebrate hosts. A blood meal is essential before laying eggs. Males feed on plant juices. Out of a world total of more than 3000 species only about 113 species are recorded in Bangladesh.

	~~<p class=Normal >~~

	<p align=center style="text-align:center">		<p align=center style="text-align:center">
Line 11:		Line 11:
	<p align=center style="text-align:center">Anopheles mosquito		<p align=center style="text-align:center">Anopheles mosquito

	~~<p class=Normal >~~

	~~<p class=Normal >~~Four ''Anopheles ''species namely ''An. dirus, An. philippinensis, An. minimus, ''and ''An. sundaicus ''are established malaria vectors in Bangladesh. The Ministry of Health claims malarial parasite positivity in four more species ''An. aconitus, An. vagus, An. annularis, ''and ''An. maculatus ''var ''willmorei. ''Bangladesh often experiences two malaria peaks a year one in pre-monsoon (May-June) time, another in post-monsoon (Oct-Nov) time. Among the non-malarial diseases, filariasis is transmitted by ''Culex quinquefasciatus ''(bancroftian type), and ''Mansonia ''speices (brugian type); ''Aedes aegypti ''and ''Ae. albopictus ''are suspected to spread Dengue, a viral disease, and a still less known Japanese Encephalitis disease is transmitted by ''Cx. tritaeniorhynchus''.		Four ''Anopheles ''species namely ''An. dirus, An. philippinensis, An. minimus, ''and ''An. sundaicus ''are established malaria vectors in Bangladesh. The Ministry of Health claims malarial parasite positivity in four more species ''An. aconitus, An. vagus, An. annularis, ''and ''An. maculatus ''var ''willmorei. ''Bangladesh often experiences two malaria peaks a year one in pre-monsoon (May-June) time, another in post-monsoon (Oct-Nov) time. Among the non-malarial diseases, filariasis is transmitted by ''Culex quinquefasciatus ''(bancroftian type), and ''Mansonia ''speices (brugian type); ''Aedes aegypti ''and ''Ae. albopictus ''are suspected to spread Dengue, a viral disease, and a still less known Japanese Encephalitis disease is transmitted by ''Cx. tritaeniorhynchus''.

	~~<p class=Normal >~~All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti ''is an urban species, whereas ''An. albopictus ''prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus ''is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia ''breeds with aquatic plants, while ''Cx. tritaeniorhynchus ''prefers to breed in rice fields.		All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti ''is an urban species, whereas ''An. albopictus ''prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus ''is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia ''breeds with aquatic plants, while ''Cx. tritaeniorhynchus ''prefers to breed in rice fields.

	~~<p class=Normal >~~Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.		Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.

	~~<p class=Normal >~~Mosquito experts emphasize more on proper drainage, cleaning marshes and ditches as ways to successful mosquito control in the country. Emptying domestic containers and taking care of natural containers have also been suggested. Local scientists have identified several indigenous animal species as predators on mosquito larvae. While fishes, various aquatic insects, and predatory mosquitoes have shown promising results, indigenous plant products have been found to be lethal to mosquito larvae, and a plant has encouraged workers by its abilities to trap mosquito larvae. These biocontrols have been proposed to be included in the national mosquito control programme. [KM Nurul Huda]		Mosquito experts emphasize more on proper drainage, cleaning marshes and ditches as ways to successful mosquito control in the country. Emptying domestic containers and taking care of natural containers have also been suggested. Local scientists have identified several indigenous animal species as predators on mosquito larvae. While fishes, various aquatic insects, and predatory mosquitoes have shown promising results, indigenous plant products have been found to be lethal to mosquito larvae, and a plant has encouraged workers by its abilities to trap mosquito larvae. These biocontrols have been proposed to be included in the national mosquito control programme. [KM Nurul Huda]

	~~<p class=Normal >~~

	''See also'' [[DENGUE]]; [[FILARIASIS]]; [[MALARIA]]. [Huda, KM Nurul Professor of Zoology, Chittagong University]		''See also'' [[DENGUE]]; [[FILARIASIS]]; [[MALARIA]]. [Huda, KM Nurul Professor of Zoology, Chittagong University]

0:0:0:0:0:0:0:1: Content Updated.

2021-06-17T19:23:37Z

Content Updated.

New page

'''Mosquito''' (''mo''''xa'') a blood sucking insect belonging to the order Diptera, family Culicidae. Important genera are ''Anopheles, Culex, Aedes, Mansonia, Psorophora'', and'' Haemagogus.'' They are vectors of many diseases, including [[malaria]], filariasis, yellow fever, [[dengue]], viral encephalitis, and dermatobiasis. The female mosquito has needle-like piercing- sucking type of mouthparts and sucks blood from different vertebrate hosts. A blood meal is essential before laying eggs. Males feed on plant juices. Out of a world total of more than 3000 species only about 113 species are recorded in Bangladesh.







Aedes mosquito

Anopheles mosquito



Four ''Anopheles ''species namely ''An. dirus, An. philippinensis, An. minimus, ''and ''An. sundaicus ''are established malaria vectors in Bangladesh. The Ministry of Health claims malarial parasite positivity in four more species ''An. aconitus, An. vagus, An. annularis, ''and ''An. maculatus ''var ''willmorei. ''Bangladesh often experiences two malaria peaks a year one in pre-monsoon (May-June) time, another in post-monsoon (Oct-Nov) time. Among the non-malarial diseases, filariasis is transmitted by ''Culex quinquefasciatus ''(bancroftian type), and ''Mansonia ''speices (brugian type); ''Aedes aegypti ''and ''Ae. albopictus ''are suspected to spread Dengue, a viral disease, and a still less known Japanese Encephalitis disease is transmitted by ''Cx. tritaeniorhynchus''.

All four established malaria vectors breed in the countryside and suburbs, and the city malaria transmission is either by imported cases or by the emerging suspected vectors, particularly ''An. vagus ''that breeds all over the country. The dengue vectors breed both in artificial and natural containers. ''Aedes aegypti ''is an urban species, whereas ''An. albopictus ''prefers to breed in the rural conditions. The filariasis vector, ''Cx. quinquefasciatus ''is the most versatile species breeding nearly everywhere with a wide biting activity pattern. However, for an unknown reason, filariasis is prevalent more in the nothwestern part of Bangladesh. ''Cx. quinquefasciatus ''accounts for nearly 80% of the total bite complain of the country. ''Mansonia ''breeds with aquatic plants, while ''Cx. tritaeniorhynchus ''prefers to breed in rice fields.

Spraying of adulticides has been replaced by the use of bed nets impregnated with Deltamecron in certain areas of Bangladesh. This has minimised the man-mosquito contact significantly. Organophosphates (Malathion) are used as larvicides by the Government workers, while the city drains are sprayed by malariol or black oil by the municipalities. State sponsored spraying programme is often inadequate or ineffective.

Mosquito experts emphasize more on proper drainage, cleaning marshes and ditches as ways to successful mosquito control in the country. Emptying domestic containers and taking care of natural containers have also been suggested. Local scientists have identified several indigenous animal species as predators on mosquito larvae. While fishes, various aquatic insects, and predatory mosquitoes have shown promising results, indigenous plant products have been found to be lethal to mosquito larvae, and a plant has encouraged workers by its abilities to trap mosquito larvae. These biocontrols have been proposed to be included in the national mosquito control programme. [KM Nurul Huda]



''See also'' [[DENGUE]]; [[FILARIASIS]]; [[MALARIA]]. [Huda, KM Nurul Professor of Zoology, Chittagong University]

[[Category:Fauna]]

[[bn:মশা]]