AgriInfo.in
AgronomyHorticultureBotanySoil SciencePlant PathologyEntomologyExtentionAgril. EngineeringDairy ScienceEconomics
 
categories
 
» Crop Pest Managment - Kharif Season
» Production Techniques for Biological Control Agents
» Introduction to Entomology
» Fundamentals to Entomology
agriculture information

Current Category » Production Techniques for Biological Control Agents

Important Terms used in Biological Control of Crop Pests – III

Ecological Niche:

The place an organism occupies in its biotic relationships and physical environment as determined by its particular structural adaptations, physiological adjustments, and developed behavioral patterns.

Economic Threshold:

A population density concept which allows the determination of the point at which pest numbers are sufficient to cause economic injury unless suppressive action is taken.

Ectoparasitoid:

An insect parasite which develops externally on its arthropod host.

Endoparasitoid:


An insect parasite which develops within the arthropods host.

Endotoxin:

An toxin substance formed by certain bacteria and retained within their vegetative cells (e.g. in Bacillus thuringiensis, the endotoxin occurs as  a part of the crystal shaped parasporal body).

Entomogenous:

Refers to organisms (usually micro organisms) growing in or on the bodies of insects.

Entomopathogenic:


Capable of causing disease in insects.

Entomophagous:


Refers to the consumption of insects or their parts, insectivorous.

Entomophilic:


Insect-loving.

Enzootic:

Refers to a disease condition (or sometimes a pest) which is constantly present in an area, but at a low rate of incidence.

Epizootic:

An outbreak of a disease (or sometime a pest) in which is an unusually high number of cases (or density of the pest).

Exotic:

A soluble toxic substance produced by certain bacteria and found in their surrounding growth medium.

Factitious Host:

An unnatural but acceptable host used in laboratory propagation of beneficial organisms.

Facultative Parasitism:

Here in reference to nematodes which may either parasitize healthy insect, or develop in some other way in the environment (e.g. mycetophagy) if no insect host is encountered.

Facultative Pathogen:

A micro organism which is capable of growth and reproduction in either a non living medium or living host; in the latter instance, a disease condition of the host may arise.

Fortuitous Biological Insect Pest Suppression:

The desirable but accidental movement of exotic beneficial organisms to new areas and/or new pests, where pest population suppression eventually results; or the successful population regulation of exotic pests by indigenous natural enemies.

Current Category » Production Techniques for Biological Control Agents