Ane's Encyclopedic Dictionary of General & Applied - download pdf or read online
By Manjit S Dhooria
Protecting the necessities of academics and researchers in brain, this encyclopedic dictionary provides the terminology in entomology and pest administration within the such a lot actual and entire means. it's also phrases regarding the shut family members of bugs, resembling mites and ticks and a few different organisms that are pests of plants.
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Extra info for Ane's Encyclopedic Dictionary of General & Applied Entomology
The term brood is often used interchangeably with generation, which is an incorrect usage. Brood Care Brood Care: Females of many nonsocial insects, after thorough choice of oviposition sites, tailor the environment to the needs of their young through various behaviours such as nest construction, feeding and protection. Brood care has evolved in a variety of insects that have developed strategies opting for maximum protection of the offspring as opposed to production of large numbers of offspring that are left to their own devices.
The maximum possible rate of increase of an organism in the absence of any limiting factors ; a measure of 26 Blastogenesis the innate ability of a population to survive and reproduce. Biotype: A genetically distinct strain / subgroup of a species distinguished by some behavioural or physiological difference but indistinguishable morphologically. Usually applied to strains of insect species which can overcome resistant plants. Biotype problem has been commonly observed in aphids which are among the fastest breeding pests.
Carrying capacity of the environment is determined by the availability of food, space and predators, while ‘r’ is the intrinsic growth rate and is free from environmental constraints. The parameters r and k are important description of population change and are much used in the discussion of pest populations. This can be inserted to produce the following simplified equation: dN K−N = rN dt K The resulting rate of increase per unit time produces a typical sigmoid growth curve. When point ‘K’ is reached, population growth stops because death and emigration rates equal birth and immigration rates, and either the population crashes or a steady state is established.
Ane's Encyclopedic Dictionary of General & Applied Entomology by Manjit S Dhooria