An assay for the activity or potency of a substance that involves testing
its activity on living material.
The young of certain animals, especially a group of young birds or fowl
hatched at one time and cared for by the same mother.
A salt or ester of carbamic acid, especially one used as an insecticide.
dosage The lowest dosage that kills all the susceptible mosquitoes
at the maximal rate.
Power or capacity to produce a desired effect; effectiveness.
An enzyme that breaks ester linkages, especially the ones found in
nucleic acids (phosphodiester bonds) and lipids. or An enzyme
that catalyses the hydrolysis of organic esters to release an alcohol
or thiol and acid. The term could be applied to enzymes that hydrolyse
carboxylate, phosphate and sulphate esters, but is more often restricted
to the first class of substrate.
The cast-off skins or coverings of various organisms, such as the shells
of crabs or the external coverings of the larvae and nymphs of insects.
An instrument resembling a pair of pincers or tongs, used for grasping,
manipulating, or extracting.
growth regulator Chemical substance that disrupts the action of insect
hormones that controls moulting, development from pupa to adult, and other
processes (Watson, Moore & Ware, 1976).
A stage of an insect or other arthropod between molts. Mosquitoes typically
have four istars in the larval period.
A narrow, usually calibrated glass tube or mechanical instrument into
which small amounts of liquid are suctioned for transfer or measurement.
Any extrachromosomal hereditary determinant. Plasmids are self-replicating
circular molecules of DNA that are found in a variety of bacterial, archaeal,
fungal, algal, and plant species.
The nonfeeding stage between the larva and adult in the metamorphosis
of holometabolous insects, during which the larva typically undergoes
complete transformation within a protective cocoon or hardened case.
Any of various synthetic compounds that are related to the pyrethrins
and resemble them in insecticidal properties.
An organism, often an insect or rodent, that carries disease. 2. Plasmids,
viruses, or bacteria used to transport genes into a host cell. A gene
is placed in the vector; the vector then "infects" the bacterium.
resistance Resistance of an insect vector to an insecticide.