biological vector


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Related to biological vector: mechanical vector

vector

 [vek´tor]
1. a carrier, especially the animal (usually an arthropod) that transfers an infective agent from one host to another. Examples are the mosquito that carries the malaria parasite Plasmodium between humans, and the tsetse fly that carries trypanosomes from other animals to humans. Dogs, bats, and other animals are vectors that transmit the rabies virus to humans.
2. a plasmid or viral chromosome into whose genome a fragment of foreign DNA is inserted, used to introduce the foreign DNA into a host cell in the cloning of DNA.
3. a quantity possessing magnitude, direction, and sense (positivity or negativity), and commonly represented by a straight line resembling an arrow; the length of the line denotes magnitude, the arrowhead denotes sense, and the position of the line with respect to an axis of reference denotes direction. adj., adj vector´ial.
biological vector an animal vector in whose body the pathogenic organism develops and multiplies before being transmitted to the next host.
mechanical vector an animal vector not essential to the life cycle of the parasite.

biological vector

An animal vector in which the disease-causing organism multiplies or develops prior to becoming infective for a susceptible person.
See also: vector
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References in periodicals archive ?
[26], in an experimental study, suggested an unlikely role for mosquitoes as BU biological vectors. In their study using mice and both natural and anthropogenic forms of inoculation, they emphasized that reducing exposure to insect bites and destroying mosquitoes breeding sites around households would break the chain of BU transmission [28].
The biological vectors the USA's climate control programme the Nano revolutions the robotics and the miniaturization of computer chips to half the size every eighteen months will lead us to El Dorado where scientific geeks will be popping vitamins and amino acid pills instead of food.
In this collection of essays, the authors look to non-biological biological vectors to curb pests and preserve crops for human consumption.
Sand flies are biological vectors of Leishmania species in human and between human and animals in the old world and new world.

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