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There are various kinds of animals in the earth. They are divided into vertebrates and invertebrates. In this topic, we study about invertebrates (Mosquito). Mosquitoes are found all over the world but they are mostly common in humid and temperate climate. There are 2,700 species of mosquito in Nepal.Carbon dioxide gives mosquitoes the signal that blood is nearby, and since we exhale CO2, we make it easy for mosquitoes to find us.
Sub kingdom: Invertebrata
Common name: Mosquito
Culex tarsalis and Anopheles freeborni are two main mosquitoes found in Nepal.
The body of mosquito is divided into three parts: head, thorax and abdomen.
Head: The head of the mosquito is very small and almost spherical in shape which is joined to thorax by the means of a short and narrow segment. The head bears a pair of compound eyes called palps and proboscis. There are 13 segments in each antenna. The second segment of each antenna possesses hearing organs called Johnston’s organs.
Thorax: The thorax consists of three parts: Prothorax, Mesothorax and Metathorax.
Abdomen: The abdomen of a mosquito is made of nine segments. The abdomen possesses an anal opening and a genital opening. The ninth segment of a male mosquito bears an anal which helps in copulation.
Difference between male and female mosquitoes
|Male mosquitoes only feed on sap of plant.||Female mosquitoes bite and suck blood.|
|Antenna is provided with long hairs.||Antenna is provided with short hairs.|
|Mouthparts are adapted for sucking.||Mouthparts are adapted for sucking and biting.|
|Abdomen is smaller.||Abdomen is larger.|
Mosquitoes are harmful because it transmits common diseases like malaria, dengue, yellow fever, filaria etc. from one person to another.
The general mosquitoes found in Nepal are culex and anopheles.
Male mosquitoes do not bite but female bite because male mosquitoes do not have piercing organs and female mosquitoes have, which sucks the blood.
mosquitoes are found specially in hot and tropical regions. They are common in houses, garden, drains, bushes, and stagnant water.
Mosquitoes feed on flower juice but female mosquitoes bite animals and sucks blood.
The differences between male and female mosquitoes are as follows:
|i) They do not suck the blood.||i) They suck blood.|
|ii) The size of wings are small.||ii) The size of wings are large.|
|iii) Antenna contains long hairs.||iii) Antenna contains short hairs.|
Mosquitoes bite can be avoided by the following steps:
i) By using mosquito net during sleeping.
ii) By using mosquito repellent cream or mustard oil on the exposed parts of a body at night.
We can control mosquitoes by following ways:
a) By removing swamp area and stagnant water around the living houses.
b) By spraying kerosene, DDT etc. over the surface of water.
c) Certain fishes such as trouts ,gambusia help selectively feed mosquito larvae.
d) By personal protection using mosquito net, anti-mosquito mats etc.
Which mosquitoes bite humans?
both male and female mosquito
males bites after female bites