Glossary of Terms
Aphid to Watermelon...the terms you need to know
ACARIDE pesticide used to control mites
ALATE winged Aphid
ALKALINE ENVIRONMENT environment with a high pH-value (pH>7)
ANTENNAE pair of jointed appendages on the head of an insect, typically sensory in function, usually being concerned with smell and touch
APTERA wingless aphid
AUXIN plant growth hormone
AXILLARY BUD growing point at the junction of a leaf and a stem or branch
BIOLOGICAL CONTROL control achieved by the application of natural enemies
CARBAMATE INSECTICIDES chemical pesticides based on carbamate compounds
CAUDAL concerning the 'tail' end of the insect
CHLOROPHYLL green substance within a leaf that is used in photosynthesis
CONIDIOSPORES asexually produced fungal spores
COSMETIC DAMAGE damage to the appearance of a fruit, flower or plant
DEUTONYMPH second nymphal stage of mites, after egg and protonymph
DIAPAUSE hibernation (under the influence of short day length and low temperature)
ECTOPARASITE parasite that sucks the host empty from the outside
ENCAPSULATED surrounded with defensive cells of the ghost, which renders the parasite (usually the egg or the larva) harmless
ENDOPARASITE parasite that lives inside the host's body
ENTOMOPHAGOUS living on insects
ENZYME protein product of a living cell that can cause or speed up a chemical reaction
FACET surface of one of the units making up the compound eye
GENETIC hereditary
HERMAPHRODITE animal with both male and female reproductive organs
HONEYDEW sticky, sugar-containing secretion produced by aphids and whiteflies, among others
HOST organism on or inside which another organism lives (at its expense)
HOST DISCRIMINATION egglaying behavior of parasites in which they differentiate between not yet parasitized and already parasitized hosts
HOST FEEDING intake of food by sucking up body fluids from the host, which may or may not kill it
HOST PLANT plant on which an insect, mite, fungus etc. lives and feeds
HOST PLANT EXCHANGE transfer from one plant food source to another type
HYPERPARASITE parasite that parasitizes another parasite
INSECTICIDE pesticide used to control insects
INTEGRATED CONTROL combination of biological, chemical and cultural control methods
LARVA immature insect or mite which differs greatly from the adult. In insects, pupation is necessary before becoming adult
LOWER EPIDERMIS exterior layer of cells on the underside of a leaf
MEMBRANOUS filmy, often transparent
MIGRANT individual that moves for various reasons
MORTALITY death rate
NATURAL CONTROL control without human intervention
NECROTIC dying plant cells
NYMPH immature insect or mite which strongly resembles the adult. Pupation is not necessary before becoming adult
OCELLUS one of the simple eyes of insects, usually occurring in a group of three on top of the head
ORGANOFOSFOR INSECTICIDES chemical pesticides based on organofosfor compounds
OVIPOSITOR organ with which eggs are laid
PARASITE enemy of plants or animals that lives at the expense of its host
PARASITIZATION the laying of an egg by a parasite inside or near its host
PARTHENOGENETIC REPRODUCTION reproduction with the help of unimpregnated eggs (individuals are genetically identical to the parent)
PATHOGEN outgrowth of deformation of a plant, often caused by insects, mites, nematodes etc.
PHOTOSYNTHESIS food production by a plant with the help of light
PHYSIOLOGY study of the functioning of organisms and their parts
PHYTOPHAGOUS living on plants
POLYMORPHISM the occurrence of two or more different types (morphs) within one species
POLYPHAGOUS eats several different types of food
POPULATION a group of animals or plants of one species that are spatially separated from other groups
PREDATION the killing and eating of prey
PREDATOR predatory enemy
PRE-OVIPOSITION PERIOD period between reaching adulthood and laying first eggs
PREPUPA intermediate form in pupation of thrips between larva and upa
PROBOSCIS mouthpart of an aphid, whitefly, butterfly or moth used to suck up plants juices
PROTONYMPH first stage after the egg in mites
PUPA stage at which the metamorphosis of larva to adult insect takes place
RESISTANCE insensitivity to a certain disease or a certain chemicl pesticide
SAPROPHYTIC GROWTH growth due to the intake of organic material
SEX RATIO proportion of males to females
SIPHON tube-shaped secretory organ on the abdomen of aphids
SUPERPARASITIZATION the laying of eggs by two or more females of one species of parasite inside or on the same host (larva)
TAXONOMY classification of organisms into groups on the basis of similarities
UPPER EPIDERMIS exterior layer of cells on the upperside of a leaf
VECTOR carrier of diseases (for example viruses)
VERMICULITE accordian-shaped grains formed from minerals. It is a chemically neutral, sterile, unperishable and odorless product that is used as carrier and packing material
VIVIPAROUS giving birth to live young
© Koppert Biological Systems, Inc. 2003
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