Bachelor’s Degree Programme(BSCG)– INSECT VECTORS AND VECTOR BORNE DISEASES Answer | BZYET-143(Q-7)

Bachelor’s Degree Programme(BSCG)– INSECT VECTORS AND VECTOR BORNE DISEASES Answer | BZYET-143(Q-7)

7. i) Fill in the blanks:
a) Culex-borne diseases can be controlled by killing …….……….. in their breeding grounds and ……………….. using space ……………… .
b) Stagnant water bodies act as …………….., ……..…………. for mosquito.
c) Mosquitoes can be controlled genetically by …………..male technique and ………………… replacement.
d) Mosquito nets used against Culex mosquitoes should not have ………… holes per square inch.
ii) Write two various methods of Culex control.

Answer:

(i)
a – common house mosquitoes,
b – place to lay eggs, grow and develop stages (egg, larval, and pupal)
c – Sterile Insect Technique (SIT),
d – 130 holes

(ii) Methods to control Culex Mosquitoes
1. CHEMICAL CONTROL whereby chemical insecticides are used to kill the mosquitoes, such as by fogging. Chemical insecticides can also be applied directly to mosquito breeding sites or resting sites (indoor and outdoor spray) to kill the larvae and adults respectively.
2. SOURCE REDUCTION by removing containers, tyres etc. in which water can collect and mosquitoes can lay their eggs.

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