Lecture 4 Flashcards
The Order Blattodea came from the Greek word blatta meaning ____.
This Order includes:
Cockroaches
Termites
Genetic and molecular evidence suggests termites evolved from within the cockroach lineage.
‘cockroach’
General characteristics of Order Blattodea:
They have an _____ body.
Their thorax is covered by ____.
They have short, multi-segmented ____.
They have a long ____ antennae.
They have ____ mouthparts.
elongated oval body
pronotum
cerci
filiform antennae
chewing
What family?
Also known as cockroaches, or waterbugs.
They are a nocturnal, gluttonous and omnivorous scavenger insect.
Even when their stomach is full, when they find better food, they will disgorge stomach contents and eat again.
can actually survive without food for ____ months.
Though technically any form of the cockroach isn’t parasitic, they serve as ____ of filth-borne diseases of humans and animals.
Family Blattidae
5 months
mechanical vectors
Their wings can be well-developed, short or lacking.
If winged, the forewings are ____ while the hindwings are ____.
The outer leathery wing is called ____.
leathery
membranous
tegmina
Aside from Asian cockroaches (____) which are attracted to light and white surfaces, almost all cockroaches are sensitive to light.
Cockroaches prefer dark, warm, and moist areas to hide.
Blattella asahinai
Other cockroach species:
____ - Blattella germanica
____ - Blattella orientalis
____ - Periplaneta fuliginosa
____ - Periplaneta americana
____ - Periplaneta australasiae
____ - Supella longipalpa
German cockroach - Blattella germanica
Oriental cockroach - Blattella orientalis
Smokybrown cockroach - Periplaneta fuliginosa
American cockroach - Periplaneta americana
Australian cockroach - Periplaneta australasiae
Brown-banded cockroach - Supella longipalpa
Their ____ are so sensitive that a slight change in air currents can alert it away from danger.
They are very fast, equivalent to humans running __ km/h.
Their legs are long and slender, adapted for running.
Their flattened body allows them to go many hidden areas.
sensory hairs
300 km/h
They can resist being crushed to death by distributing the pressure around its body.
They can eat a lot of organic matter, due to their ____.
They can eat nutrient poor food and allow bacteria in their GIT to utilize the waste and transform them into useful molecules.
many digestive enzymes
Some cockroaches will eat their own feces, vomit, and own kind if need be.
Their genetic materials are immune to a lot of pathogens they harbor.
They reproduce quickly, able to pass down ____ (against insecticides) to new generations.
resistant genes
Adults lay cases of ____ eggs in warm, humid, and secluded spots of rocks, trees, and homes.
Eggs take about __ months before they hatch.
Nymphs undergo several molting, growing a little each time they shed their skins.
10 to 50 eggs
1-2 months
As they emerge from their old shells, immature pests have ____ bodies that harden and change color to brown, tan, or gray.
soft, white bodies
Pathogenic Effects of Cockroaches
Cockroaches transmit pathogens. A lot of them:
Around 40 enterobacteria species (____, ____, etc.)
Anthrax
Tetanus
Pneumonia
Tuberculosis
Diphtheria
Escherichia coli, Salmonella etc
Pathogenic Effects of Cockroaches
They can also transmit:
Fungi (Aspergillus)
Protozoan parasites (Giardia, Entamoeba, Trichomonas) Filarial parasites
____ - eyeworm of chicken
____ - proventricular worm of chicken
____ - stomach worm of dogs
Oxyspirura mansoni
Tetrameres americana
Physaloptera praeputialis
