-
The egg-laying habits of female mosquitoes vary ... between species.
widely
-
... lay eggs on water surfaces
Anopheles
-
... lay single eggs on moist soil
Aedes
-
Eggs laid on water surfaces usually hatch within ... or so
a day
-
eggs laid on ... ... do not hatch until the surfaces are ... , which may occur ..., or even ... later
- soil surfaces
- flooded
- months
- years
-
Small larvae are almost ... ... ... ... when they hatch from the ....
-
Larvae molt ... times to a ... stage, which will molt to become a ...
-
The time needed for the multi stage process from larva to pupa is dependent on ... ...
environmental factors
-
Availability of ... , ... ... , and even ... ... play into the timeline from larva to pupa
- food
- water temperature
- larval density
-
Most mosquito species have larvae that are restricted to ... ...
fresh water
-
larvae of a few species can develop under other conditions such as -
... , ... ... , or water polluted with ... ...
- brackish
- salt water
- organic solids
-
Adult mosquitoes emerge .. to ... days after the appearance of pupae, with the ... emerging first.
-
The males need to come out first to allow ...
for their ... to harden and rotate into
position for ...
-
In ... , the entire life cycle, from egg to adult, may be completed in ... days or less.
-
Females feed on ... ... for ...
development.
-
This behavior by females is the single most
important characteristic of mosquitoes from the human standpoint.
feeding on vertebrate blood
-
Some species of mosquitoes have but a single generation per year (...), there are others that have many (...), depending on the ... of the season favoring the activity of the ... stage.
- univoltine
- multivoltine
- length
- adult
-
an altered physiological
state in which certain activities such as
bloodfeeding, ovarian development, or
flying are suspended.
diapause
-
... and related genera, the diapause
mechanism usually involves the ... stage.
-
... populations may survive winters as
...-resistant eggs , sometimes
under the surface of ... or along ... ....plains.
- Aedes
- dessication
- snow
- river flood
-
... larvae then hatch in the
spring after the eggs are ... from
melted snow or after flooding of the
....
-
... and ... females usually
survive unfavorable periods as diapausing
or quiescent ...
-
Male ... and ... usually do not survive
unfavorable periods, so it is necessary for
... to occur before the onset of
...
- Culex
- Anopheles
- insemination
- diapause
-
Male ... and ... usually do not survive
unfavorable periods, so it is necessary for
... to occur before the onset of
...
- Culex and Anopheles
- insemination
- diapause
-
... , ... , ... , can diapause as larvae
Aedes, Anopheles, Culiseta
-
diapause is controlled
directly by _
neurohormones
-
Hormones in insects that
are secreted by special
glands that are associated
with the insect nervous
system.
Neurohormones
-
_ is a neurohormone
Ecdysone
-
Many tropical and subtropical species,
such as _ , the yellow-fever
mosquito, do not have a diapause
mechanism.
Aedes aegypti
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