Medical importance of cockroach

1.

PRESENTED BY: SIDDA KANISHA &
SRIRAMAN ANAND
GROUP: 195A
SUPERVISOR: SVETLANA SMIRNOVA

2.

Kingdom: Animalia
Phylum: Arthropoda
Class:
Insecta
Superorder:Dictyoptera
Order:
Blattaria

3.

• Around 4000 species worldwide.
• 18 species have become serious domestic pests.
• The most important medically are:
1. Blatella germanica (german cockroach)
2. Blatella orientalis ( oriental cockroach)
3. Periplanta americana (american cockroach)
4. Supella longipalpa (brown- banded cockroach)

4.

Reddish- brown in colour
Oval, flattened body shape
Omnivorous
3 to 5 cm in length and 1.5 to 2 cm in breadth.
Thorax covered by large plate (pronotum)
Mandibulae mouthparts are used for chewing.
Nocturnal

5.

Compound eyes
Male genitalia is asymmetrical and cerci larger
than style.
Long and setaceous (bristle- like) antenna
Eggs present in ootheca (chitinous body)
Hypognathous
Tegmina present
Legs cursorial.

6.

Reproductive system of cockroach

7.

8.

• Most common species in
germany.
• Originally from Africa.
• Smaller than american
cockroach.
• Found mostly basement and
first floors in buildings.
• Carries egg capsule.
• Nymphal stage 2-3 months
long.

9.

• Originally from Africa.
• Like damp environments.
• Found in sewers, around
pipes, ships.
• Found in basement or
first floor of building.
• Nymphal stage 10-14
months long.

10.

• Shiny, black in colour.
• Found in sewers, and likes to stay on
basement.
• More tolerant to cooler temperatures.
• Male have short wings, female are long.
• Nymphal stage: 12-15 months long.

11.

Originally from Cuba.
2 broad bands are present across dorsum.
Found in all rooms in house.
Like to stay on higher places than lower places.
Big problem in the southern U.S.
They lay glue eggs that gets stuck to things.
Often in ships with furniture.
Furniture- loving species.

12.

Hemimetabolous
Eggs are laid encased in a capsule called an ootheca.
a) Typically 18-40
b) Deposited or cemented to surfaces.
c) 4-90 ootheca
Nymphs
a) Hatch after 1-3 months.
b) Wingless
c) Number of nymphal stage and length varies with species.
Adults: 2 years life span or more.

13.

14.

Food contamination.
Inoculation of disease causing bacteria.
Cockroaches bitting
Bacterial Invasion to body parts
Food poisoning
Asthma
Allergies

15.

Keep your houses clean.
Clean the food preparation area
Empty dustbins of your kitchen
Dustbins should be covered
always.
Never keep old newspapers,
magazines and books.
Avoid use of foggers, bombs or
aerosol sprays.
Sprinkle boric acid.
Use cockroach bait
Block all entrances.

16.

Considered mother nature recyclers
Involve in pollination.
Part of food chain of some animals.
Used in medicine, Lafcadio Hearn(1850-1904) cockroach
tea used for tetanus,
• Used by Aristotle Silphe used for injury as a poultice of
boiled cockroaches placed over wound.
• Farming in china.
• Used for space tests. A cockroach given name “Nadezhda”
was sent into space by russian scientists during Foton- M
test. It became the first terrestrial animal to give birth in
space.

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