Medical Entomology

Question 1

Arthropod-borne diseases are a significant global health issue, causing approximately 50% of deaths in developing countries like Nigeria.

Question 2

Class: Insecta consists of what type of Mosquitoes: & what dey cause

Answer 2

Anopheles: Vectors for malaria.

Culex: Vectors for filariasis, West Nile virus, and encephalitis.

Aedes: Vectors for dengue fever, Zika virus, yellow fever, and chikungunya.

Mansonia: Vectors for filariasis.

Question 3

Class: Insecta consists of what type of :Flies & what dey cause

Answer 3

Flies:

House Flies (Musca domestica): Can spread various diseases by contaminating food.

Sandflies (Phlebotomus): Vectors for leishmaniasis.

Tsetse Flies (Glossina): Vectors for African trypanosomiasis (sleeping sickness).

Black Flies (Simulium): Vectors for onchocerciasis (river blindness).

Crab Lice (Pthirus pubis): Causes itching and dermatitis through infestation.

Question 4

Class: Insecta consists of what type of :Human Lice: & what dey cause

Answer 4

Human Lice:

Head Lice (Pediculus humanus capitis): Causes pediculosis, leading to itching and discomfort.

Body Lice (Pediculus humanus corporis): Vectors for typhus, trench fever, and relapsing fever.

Question 5

Class: Insecta consists of what type of fleas & bugs & what dey cause

Answer 5

Fleas:

Rat Fleas (Xenopsylla cheopis): Vectors for plague and murine typhus.

Sand Fleas (Tunga penetrans): Causes tungiasis, leading to painful lesions.

Bugs:

Bed Bugs (Cimex lectularius): Causes itching and sleep disturbances through bites.

Reduviid Bugs (Triatoma): Vectors for Chagas disease.

Question 6

Class: Arachnida consists of what type of mites & ticks & what dey cause

Answer 6

Ticks:

Hard Ticks (Ixodidae): Vectors for Lyme disease, Rocky Mountain spotted fever, and other tick-borne diseases.

Soft Ticks (Argasidae): Vectors for relapsing fever.

Mites:

Trombiculid Mite (Leptotrombidium): Vectors for scrub typhus.

Itch Mite (Sarcoptes scabiei): Causes scabies, leading to intense itching and rash.

Question 7

Class: Arachnida consists of what type of mites & ticks & what dey cause

Answer 7

Ticks:

Hard Ticks (Ixodidae): Vectors for Lyme disease, Rocky Mountain spotted fever, and other tick-borne diseases.

Soft Ticks (Argasidae): Vectors for relapsing fever.

Mites:

Trombiculid Mite (Leptotrombidium): Vectors for scrub typhus.

Itch Mite (Sarcoptes scabiei): Causes scabies, leading to intense itching and rash.

Question 8

Class: Crustacea

Cyclops:

Cyclops (copepods): Intermediate hosts for the Guinea worm (Dracunculus medinensis) and the fish tapeworm (Diphyllobothrium latum).

Question 9

Distinctive Characteristics of Arthropod Classes

Answer 9

Characteristics
Insecta
Arachnida
Crustacea
1
Body division

Head, thorax & abdomen
Cephalo thorax & abdomen
Cephalo thorax & abdomen

2
Legs

3 pairs
4 pairs
5 pairs

3
Antennae

1 pair
None
2 pairs

4
Wings

1 or 2 pairs,
None
None

5
Adult Habitat

Terrestrial
Terrestrial
Aquatic