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Question

Which of the following female mosquitoes acts as a carrier of dengue virus?

The correct answer is

Aedes

Understanding Dengue Virus Transmission

Dengue fever is a viral infection transmitted to humans through the bite of infected mosquitoes. Understanding which type of mosquito is responsible for carrying the dengue virus is crucial for preventing its spread.

Identifying the Dengue Carrier Mosquito

The question asks specifically about the female mosquito that acts as a carrier for the dengue virus. Mosquitoes belonging to different genera are known to transmit various diseases. Let's look at the options provided:

  • Anopheles: Mosquitoes from the genus Anopheles are primarily known for transmitting malaria.
  • Culex: Mosquitoes from the genus Culex are vectors for diseases like West Nile fever, Japanese encephalitis, and lymphatic filariasis.
  • Mansonides: The genus Mansonides (often considered part of the genus Mansonia) can transmit diseases like lymphatic filariasis (Wuchereria bancrofti and Brugia malayi) in some regions.
  • Aedes: Mosquitoes from the genus Aedes are well-known vectors for several important viral diseases, including dengue fever, Zika fever, chikungunya, and yellow fever.

Female mosquitoes require a blood meal to develop their eggs. If a female mosquito feeds on a person infected with the dengue virus, the virus can replicate in the mosquito's body. The mosquito can then transmit the virus to other people when it bites them.

Focusing on Female Mosquitoes

It is important to note that it is the female mosquito that bites humans and animals for a blood meal. Male mosquitoes typically feed on nectar from plants. Therefore, the transmission of vector-borne diseases like dengue is carried out by female mosquitoes.

Among the options listed, the genus specifically identified as the primary carrier of the dengue virus is Aedes. The most common species involved in transmitting dengue are Aedes aegypti and Aedes albopictus.

Based on the known vectors for the dengue virus, the female mosquito that acts as its carrier belongs to the genus Aedes.

Common Mosquito Genera and Transmitted Diseases
Mosquito Genus Primary Diseases Transmitted
Anopheles Malaria
Culex West Nile fever, Japanese encephalitis, Lymphatic filariasis
Mansonides (or Mansonia) Lymphatic filariasis
Aedes Dengue, Zika, Chikungunya, Yellow fever

Therefore, the female mosquito that acts as a carrier of the dengue virus is from the genus Aedes.

Revision Table: Dengue Virus Mosquito Carrier

Key Information on Dengue Transmission
Aspect Detail
Disease Dengue Fever
Causative Agent Dengue Virus
Primary Vector Female Mosquitoes of the genus Aedes
Key Aedes Species Aedes aegypti, Aedes albopictus
Transmission Method Bite of infected female mosquito

Additional Information on Dengue Mosquitoes

Female Aedes mosquitoes are easily recognizable by the distinctive black and white markings on their legs and bodies. They are daytime biters, with peak activity usually occurring in the early morning and late afternoon.

Unlike many other mosquitoes, Aedes aegypti primarily breeds in man-made containers holding water, such as buckets, flower pots, tires, and water storage containers. This makes them highly adapted to urban environments and explains why dengue is often prevalent in populated areas.

Controlling the population of Aedes mosquitoes, especially by eliminating their breeding sites, is a key strategy in preventing dengue outbreaks. Personal protection measures, such as using mosquito repellents and wearing protective clothing, are also important.

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Important Questions from Diseases

  1. Which of the following is the correct match of the column-A with column-B?

    Column-A (Name of Disease)

    Column-B (Affected Organs)

    i.

    Alzheimer's diseases

    a.

    Salivary glands

    ii.

    Diphtheria

    b.

    Reproductive tract

    iii.

    Gonorrhoea

    c.

    Brain

    iv.

    Mumps

    d.

    Nose and throat

  2. Match the columns.

    Column-A

    (Disorder)

    Column-B

    (Hormone/Gland)

    i.Addison's diseasea.Adrenal gland
    ii.Hashimoto's diseaseb.Thyroid gland
    iii.Acromegalyc.Growth hormone
    iv.SIADHd.Vasopressin
  3. Who prepared the first effective vaccine against polio?

  4. What causes the 'Mad cow' disease in cattle?

  5. Which is a serious contagious bacterial infection that usually affects the mucous membranes of the nose and throat?

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