Mbsc Flashcards
How many mosquito species have been described world wide?
Over 3000
Where are mosquito larvae typically found?
In such diverse habitats as the grassy margins of ponds, standing water in fields and forests, catch basins and common yard debris.
Where do Mosquitos lay there eggs?
Eggs of different species may be laid singly or in rafts, on water or on damp soil where they hatch after subsequent flooding.
How many mosquito species are in the state of Georgia?
Over 60
How much is spent annually in an effort to reduce and treat the effects of disease and nuisance caused by mosquitoes.
Approximately 125,000,000
Where are four of Georgia’s largest and most comprehensive mosquitoes control programs located?
Coastal counties
In addition to the economic losses suffered as a result of annoyance, mosquitoes also threaten _________.
Public Health
West Nile virus was introduced into the state of Georgia in what year?
2001
In addition to human issues, thousand of dogs die each year from ______.
Dog heartworm, another mosquito born disease.
When was the Georgia mosquito association established?
In 1976. Mr Oscar Fultz of Chatham county ( Savannah ) mosquito control program serving a its first president.
Describe the system of classification and naming that scientist have devised in which each kind of animal known to science is giving a name consisting of two words.
The first name is the name of the genus and is written with a capital letter. The second name is the name of the species and begin with a small letter. Together they form the scientific name which is always either italicizes or underlined( to indicate italics).
How many mosquito species occur in the United States?
174
How many distinctive stages of development does mosquitoes have?
4
What is the metamorphoses of a mosquitoes?
Egg, larvae, pupa and adult.. This type of life cycle is described as holometabolous
Eggs of most species of Mosquitoes must be immersed in water to hatch, but maybe deposited initially either directly on water or in locations subject to ____________ _____________.
Periodic flooding
Mosquito larvae and pupa are_______.
Aquatic
Adult Mosquitoes are ______ free flying _________.
Active , insects
Mosquitoes are usually collected in what stages of development?
Larvae and Adult
Mosquito belong to what family?
Culicidae within the insect order Diptera.
Like all true flies the adult mosquitoes have only ____ pair of wings rather than the usual ____ pair found on most insects
1, 2
How do mosquitoes differ from other Diptera ?
(1) having numerous scales on the edges and veins of the wings,(2) females having mouthparts extended into along proboscis which contain needle like sky lets.
Only female Mosquitoes feed on blood. Males feed on______ of________ and other_______ in the environment to produce energy for flying and mating.
Nectar, plants, sugars
Identifying mosquitoes can be a difficult task and usually requires a ______ and use of a _____ ______.
Microscope , quality key
___ of the ____ genera of mosquitoes that exist in North America are present in Georgia.
12, 14
Since most adult mosquito keys apply only to females, the sex of the mosquito must be determined prior to identification by examining the _____.
Head
Males mosquitoes have _____ antennae and long ____.
Bushy, palpi
Female mosquitoes have few _____ on their antennae and with the exception of ______ mosquitoes have short _____.
Bristles, Anopheles, Palpi
Both ______ and ______ are critical for adult mosquitoes
Temperature, humidity
Name the three subfamilies that mosquitoes species fall in in Georgia?
Toxorhynchitinae ( genus Toxorhynchites), Anophelinae ( genus Anopheles) or Cucinae ( the other ten genera).
The larvae of_________ are found in tree holes or artificial containers. They are very large and predacious, feeding on other mosquito larvae and other small ________ that occur in their larvae habitat . The have an almost________ head and the ________ on their ________ and ________arise from heavily chitinized plates. The female do not take ________as an adult mosquito, feeding only on plant nectar and juices.
Toxorhynchites, organisms. Square , hair, thorax, abdomen, blood
_________ larvae are characterized by the absence of a _______and the presence of a ________ ( palmetto shaped) hair dorsally on each side of , at least segments 4-6 of the _______. Anophelinae larvae usuall lie_________ to the surface of the water.
Anopheline, siphon, palmate ,abdomen.Parallel
_______ larvae always have a siphon which may or may not bear ______( a row of spines) . They do not have _____ hairs. These larvae usually lie with head ________ at a ____ degree angle to the water surface.
Culcine, pecten. Palmate. Downward,45
Because it is easy to misidentify mosquitoes in the field , samples should be taken into the _______ to be verified under a ________.
Laboratory, microscope.
A stereoscopic microscope to be used for adult and larval identification should have a magnification range of ___ to ___,the lower power for use in sorting specimens that are readily identifiable and the higher power for detail work.
10x,40x
Specific identification of difficult larval characteristics or male terminalia may require magnification of up to _____
400x
Female mosquitoes select locations for egg deposits that will provide suitable conditions for larvae development after the egg hatch. Name the conditions.
Stagnate water, Food source, protection,
Mosquito eggs are_____ when first deposited but _______ in ___ to ___ hours
White, darken, 12, 24
When viewed with magnification , eggs of different species can seen to vary from_____ shaped to _______ or _____-______ in shape
Canoe , elongate,elongate oval
Most species eggs appear the same to the naked eye with the exception of the __________ whose eggs have ________extensions that serve as _______ attached to each side.
Anopheles, lateral, floats
Egg laying characteristicsfollow three patterns 1._________________________
- _________________________
- _________________________
- Deposited singly on the waters surface
- Glued together to form rafts that float on the water surface
- Deposited singly out of the water.
_________ and _________ eggs are deposited singly on the waters surface and _____ until they hatch __ or __ days later.
Anopheles, Toxorhynchites, float, 2, 3
__________ eggs have projecting_________ that trap air bubbles that help keep them on the waters surface, similar to the_________eggs with their __________ extensions that serve as ________.
Toxorhynchites, spines, Anopheles, lateral, floats
______, ________,_________ and_________ species glue individual eggs together to form a floating raft. As the eggs hatch __ or __ days later the raft breaks up in individual egg cases ( up to 300 or more) remain floating on the waters _____.
Culex, Culiseta,Coquillettidia, Uranotaenia. 2, 3 ,surface
The desiccation resisting eggs of _________, _________, ____________, ______________ are deposited out of the water and do not hatch until the area is _______.
Aides,Psorophora, Ochlerotatus, orthopodommyia, flooded.
_________, and some ___________ species lay their eggs on the side of tree holes or other water containers just above the waters surface. ___________ eggs hatch within ___ to __ days and the larvae slide down into the water. Hatching occurs in some _________ only when the water level rises and eggs are ________.
Orthopodomyia,Ochleotatus. Orthopodomyia, 2, 3. Ochleotatus,flooded.
Other Ochlerotatus, Aedes, Psorophora species deposit there eggs on moist soil where they remain until exposed to certain environmental conditions and eventually covered with water. These eggs hatch shortly after flooding but some Ochleotatus eggs must experience a protracted exposure to cold weather before flooding causes them to hatch. Some species have several generations a year while other groups have only one. The eggs of some species can survive for 3 to 5 years if flooding do not occur. This characteristic is an important factor that contributes to the extensive mosquito population that are sometime common after hurricanes and floods.
Ochlerotatus, Aedes, Psorophora. Ochlerotatus. Several, one. 3,5, flooding. Hurricanes , floods
Common mosquito larvae habitats in Georgia are?
Temporary pools caused by rain or stream overflow or tides, used tires, man made debris and other water collecting containers, storm sewer catch basins, roadside drainage ditches, cavities in trees and permanent ponds , marshes and lakes with emergent vegetation. The water in these locations may vary from fresh, to blackish, to salty, to highly polluted and have a broad spectrum of dissolved chemicals
How many stages of in stars do mosquito larvae pass through during development.
4
At the end of the __ instar larvae ____ and become ______.
4th, molt, pupae
