Medical importance of cockroach

Содержание

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

SYSTEMATIC CLASSIFICATION

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

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GEOGRAPHICAL DISTRIBUTION Around 4000 species worldwide. 18 species have become serious

GEOGRAPHICAL DISTRIBUTION

Around 4000 species worldwide.
18 species have become serious domestic pests.
The

most important medically are:
Blatella germanica (german cockroach)
Blatella orientalis ( oriental cockroach)
Periplanta americana (american cockroach)
Supella longipalpa (brown- banded cockroach)
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DISTINGUISHED FEATURES Reddish- brown in colour Oval, flattened body shape Omnivorous

DISTINGUISHED FEATURES

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
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Compound eyes Male genitalia is asymmetrical and cerci larger than style.

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.
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Reproductive system of cockroach

Reproductive system of cockroach

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DIFFERENCES BETWEEN MALE AND FEMALE COCKROACHES

DIFFERENCES BETWEEN MALE AND FEMALE COCKROACHES

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GERMAN COCKROACH (Blattella germanica) Most common species in germany. Originally from

GERMAN COCKROACH (Blattella germanica)

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.
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PERIPLANETA AMERICANA (AMERICAN COCKROACH) Originally from Africa. Like damp environments. Found

PERIPLANETA AMERICANA (AMERICAN COCKROACH)

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.
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BLATTA ORIENTALIS (ORIENTAL COCKROACH) Shiny, black in colour. Found in sewers,

BLATTA ORIENTALIS (ORIENTAL COCKROACH)

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.
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SUPELLA LONGIPALPA (BROWN BANDED COCKROACH) Originally from Cuba. 2 broad bands

SUPELLA LONGIPALPA (BROWN BANDED COCKROACH)

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.
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LIFE CYCLE OF COCKROACH Hemimetabolous Eggs are laid encased in a

LIFE CYCLE OF COCKROACH

Hemimetabolous
Eggs are laid encased in a capsule called

an ootheca.
Typically 18-40
Deposited or cemented to surfaces.
4-90 ootheca
Nymphs
Hatch after 1-3 months.
Wingless
Number of nymphal stage and length varies with species.
Adults: 2 years life span or more.
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EFFECTS OF COCKROACHES Food contamination. Inoculation of disease causing bacteria. Cockroaches

EFFECTS OF COCKROACHES

Food contamination.
Inoculation of disease causing bacteria.
Cockroaches bitting
Bacterial Invasion to

body parts
Food poisoning
Asthma
Allergies
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PREVENTION OF COCKROACHES Keep your houses clean. Clean the food preparation

PREVENTION OF COCKROACHES

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.
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SIGNIFICANCE IN ECOSYSTEM Considered mother nature recyclers Involve in pollination. Part

SIGNIFICANCE IN ECOSYSTEM

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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DISEASES TRANSMITTED BY COCKROACHES SALMONELLOSIS. TYPHOID FEVER. CHOLERA. DYSENTERY. LEPROSY. PLAGUE. CAMPYLOBACTERIOSIS. LISTERIOSIS.

DISEASES TRANSMITTED BY COCKROACHES

SALMONELLOSIS.
TYPHOID FEVER.
CHOLERA.
DYSENTERY.
LEPROSY.
PLAGUE.
CAMPYLOBACTERIOSIS.
LISTERIOSIS.

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LINKS TO STUDY MEDICAL IMPORTANCE OF COCKROACH https://www.youtube.com/watch?v=qe19Pw23M10 https://www.youtube.com/watch?v=H_HxwLHX8mc https://www.youtube.com/watch?v=KKYJf2DL1FM

LINKS TO STUDY MEDICAL IMPORTANCE OF COCKROACH

https://www.youtube.com/watch?v=qe19Pw23M10
https://www.youtube.com/watch?v=H_HxwLHX8mc
https://www.youtube.com/watch?v=KKYJf2DL1FM