parasitic insects Flashcards
What do all mosquitoes require to lay eggs, larvae, pupae
water
How to male mosquitos differ from female mosquitos
feathery antennae and mouthparts not suitable for piercing skin
3 main mosquito genera
Aedes- zika, yellow fever
Anopheles- malaria
culex- lymphatic filariasis
How to identify culex, anopheles, aedes larvae
Anopheles- larvae stays parallel to the water
Aedes- has siphon (air tube)
Culex- has longer siphon
identify culex, anopheles, aedes adult
anopheles- yellowish. resting position 45 degree angle. dark spot wings incapable of flying long distance
Aedes- black with white patches
Culex- yellowish. resting position parallel. transparent with fine lines able to fly distances
identify culex, anopheles, aedes egg
anopheles- eggs laid in a single horizontal line with air bubbles
Aedes- laid singly but no air bubbles
culex- laid in clusters
What parasite does genus phlebotomus
Leishmania
difference between sandfly life cycle and mosquito development
sandflies dont require aquatic environment to complete life cycle
lay in soil or decaying material
eggs, larvae, pupa, sandlfy
3 types of lice
head lice- Pediculus humanus capitis
body lice- Pediculus vestiment
Crab lice- Phthirius pubis
Difference between holometabolous and hemimatabolous development
Holometabolous insects undergo complete metamorphosis whereas Hemimetabolous insects undergo incomplete or partial metamorphosis.
How do pediculus humanus capitis lay egg
egg laying is temperature dependent
to attach a egg, female secretes glue from reproductive organs
What type of development does pediculus humanus capitis
hemietabolous- partial metamorphosis
pediculus vestimenti serves as vectors for what disease
Rickettsia prowazekii (causes epidemic typhus) and
Borrelia recurrentis
Why does phthrius pubis have big claws
transmission
what type of development
to inhabit more rough hair
sexual intercourse
hemimetabolous
What is name for bedbug and their main characteristics
Cimex lectularius
Blood feeding parasites
broadly flattened, oval, reduced wings
shy so only come out at night
oily secretions can be smelt
before= 6mm brown after feeing =swolen +red
Cimex lectularius development
- f lays around 200 eggs (has cement to stick)
- Colourless nymphs emerge from eggs and turn into 1st 2nd 3rd 4th 5th stage before turning to adult
how can you detect bedbugs and what do they cause
can smell their oily secretions.
may carry leprosy, Q fever, but never implicated to spread disease to humans
differne between pedicuas humanus + cimex lectularius
lice SMALLER + legs short and thick
lice hv well developed claws
bedbugs hv thin + long legs
Name of flea and its characteristics
Pulex irritans
feeds on blood. adults 4mm. laterally flat, dark brown, wingless. CAN JUMP on host.
Pulex irritans development
holometabolous
* f lay 400 eggs 0.5 mm
* larvae hatches and after 3 molts becomes pupae, then adult hatches from pupae.
* duration of development depends on temp
Pulex irritans diseases
PLAUGE - flea transmits yersinia pestis
also causes: murine typhus, flea borne rickettsiosis
its int hos of dipildium canium
