Entom Lecture 3 Flashcards
Biological DT of Mosquitoes:
- Propagative
- Cyclopropagative
Mechanical DT of Mosquitoes
- Ecdysis
- Ecdysone
Types of Metamorphosis
- Ametabola
- Hemimetabola
- Holometabola
Types of Myasis
- accidental
- obligatory
- facultative
- cutaneous
- urogenital
- ophthalmic
- nasopharyngeal
- intestinal
- creeping
- furuncular
- traumatic
Taxonomic classifications of important pest and vector species of Mosquitoes:
S
H
A
A
M
P
Genera:
- Culex
- Aedes
- Anopheles
- Psorophora
- Mansonia
- Haemagogus
- Sabethes
Mosquitos have _____ symmetrical body, subdivided into _______.
bilaterally, segments
Mosquitos’ bodies are covered with exoskeleton which is made up of a tough and rigid substance known as ______
Chitin
Jointed appendages are present on some body segments of mosquitos?
T or F
T
Mosquitos’ Biology include: Body cavity between the ______ and the body wall.
alimentary canal
Mosquitos have open circulatory system that works by diffusion unlike the arteries and veins in higher animals like humans.
T or F
T
Do mosquitos have ventral ladder type digestive system?
T or F
F - ventral ladder type nervous system.
Mosquitos have ventral ladder type nervous system. These are called _____ and are situated at different places in the body of the arthropod with a ladder type linkage.
ganglia
In mosquitos, Messages passes from one ganglia to the other and finally to the big ganglia at the (abdomen or head) through the nerves.
head
In mosquitos, Growth by molting, which is controlled by (hormones or ganglia)
hormones
Genera of mosquitos that are responsible for transmitting malaria
Anopheles species
What are the vectors of filariasis:
W
A
B
B
- Wuchereria bancrofti
- Brugia malayi
- Brugia timori
- arboviruses
Genera that transmit Wuchereria bancrofti and arboviruses
Culex species
Species that are vectors of yellow fever, dengue, West Nile virus and other arboviruses, Wuchereria bancrofti and Brugia malayi
Aedes species
species that transmit Brugia malayi,_ Wuchereria bancrofti and a few arboviruses
Mansonia species
2 vectors of yellow fever and a few other arboviruses in Central
and South America
Haemagogus and Sabethes mosquitoes
Genus that transmit arboviruses and as troublesome biters in North and South America.
genus Psorophora
Mosquitos are slender and relatively small insects measuring about ___ mm in length
3-6 mm
2 mm while others may be as long as ___
19 mm
Mosquitos’ bodies
are distinctly divided into a head, thorax and abdomen. T or F
T
Mosquitoes have (one or two) pair of functional wings (the fore-wings) and (hindwings) a pair of small knob-like halteres.
one pair
Mosquitos have the possession of a conspicuous forward-projecting _____
proboscis
Mosquitos have the presence of numerous appressed scales on the thorax, legs, abdomen and (wing veins) ?
T or F
T
Mosquitos have a fringe of scales along the (anterior or posterior) margin of the wings.
posterior
feathery antennae are males or femles (mosquitoes)
Male
short and rather inconspicuous antennal hairs are females
females
Mosquitos have Saliva that contains _____ that produce haematomas in the skin and facilitate the uptake
of blood.
antihaemostatic enzymes
Mosquitos have Saliva that also contains ____ to prevent blood from clotting and obstructing the
mouthparts as it is sucked up, and _____substances that help reduce the pain inflicted by the mosquito’s bite, so reducing the host’s defensive reactions.
anticoagulants, anesthetic substances
Although male mosquitoes have a proboscis, the maxillae and mandibles are usually reduced in size or
the mandibles are absent, and consequently males cannot bite
T or F
T
Autogenous Development
Gonodostrophic cycle
Oviposition and biology of eggs of Culex
30 - 300 eggs in one oviposition in eggraft
