Adluts Sampling techniques
(1)Landing collection
(2)Oviposition trap
A
jar with wide mouth is used as the oviposition trap. The jar is painted in black color because
mosquitoes prefer shady environments. It is used to attract gravid female
mosquitoes of Aedes sp. Hey fusion is used as the attractor. Different
species of Aedes mosquitoes can be attracted by changing the concentration
of hey fusion. Aedes mosquitoes lay eggs dry surface around the sides of
containers and plastic stick above the water level. Eggs have to be counted
following day unless eggs hatch and larvae emerge. It is a cheap method. Oviposition traps
cannot be used for collecting other mosquitoes types expect Aedes.
(3)Resting box
Resting
boxes are made of a small wooden box which is covered with a black non
reflective paper because mosquitoes attracts shady environment. Its outside is
covered with a muslin cloth and one end is open. There is high probability to mosquitoes be
escape from the resting box.
(4) Sticky trap
It
is used to collect adult mosquitoes from the both outside and inside. It is
paced in dark and shady places. Appropriate bait is used to attract the
mosquitoes. It is very is to handle. It is not a labor consuming method. It is
a time consuming method. Mosquitoes can
be damaged or died due to the stickiness.
(5)Pooter/Aspirator
Both
adult female and male mosquitoes can be collected from their resting places by
using pooter or aspirator. Resting palces are varying with the species. Resting
place of Aedes mosquitoes is outside vegetation. Resting places for Anophiline
mosquitoes is inside the houses. Mosquitoes are drawn into the main chamber of
the pooter by sucking at the mouth piece. Adult mosquitoes can be collected
without any damage or minimum damage. It is a time consuming method. It is
labor intensive. Diseases can be transmitted through the pooter to the user.
Why it is very
difficult to catch adult male misquotes?
Since
adult males are plant nectar feeders, they are usually caught from resting
places in the vegetation by using pooter or aspiration because they can be
attracted by female mosquitoes. Although female mosquitoes are also plant
nectar feeders, they attract to human or animals in order fulfill their blood
requirements for their eggs developments. Therefore adult female mosquitoes can
be easily caught.
Larvae sampling
techniques
(1)Siphoning
Larva is extracted into a small tube according to a pressure gradient by
siphoning. It is used to collect larva from small habitats such as tree holes.
So it cannot be used for large habitats. Larval density cannot be determined.
(2)Pippeting
It
is used to collect larvae from small water bodies. So it also cannot be used to
collect larvae from small water bodies. Larval density cannot be determined by
using pipette.
(3)Dipping
Larvae
form the large water bodies are collected by using a scoop or a dipper. It can
be used to collect larvae from different depth from surface. Larval density can be determined by using
dipping method.
(4)Netting or funnel
trap
It
is made of a nylon net which attached to iron ring. The iron ring is attached
to a handle. It used to collect larval
from large water bodies like wells. It can be used to determine larval
density. Larvae from small habitats
cannot be collected by using netting or funnel trap.
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