net reproductive rate


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net reproductive rate

,

NRR

A measure of whether a population is reproducing at a greater or lesser rate than needed for its replacement. It is determined by calculating the average number of surviving daughters born to the women in that population during their reproductive years. An NRR of 1 indicates that each woman in the population has one surviving daughter during her lifetime.
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3014 progeny per day) and the net reproductive rate (140 to 187 female eggs per female) (Chien et al.
0] = net reproductive rate as nymphs per female, and r = intrinsic rate of increase per day, i.
Age-stage, two-sex life tables of Aphidius gifuensis (Ashmead)(Hymenoptera: Braconidae) and its host Myzuspersicae (Sulzer)(Homoptera: Aphididae) with mathematical proof of the relationship between female fecundity and the net reproductive rate.
POPULATION GROWTH PARAMETERS OF STENOMA IMPRESSELLA AT CONSTANT TEMPERATURES UNDER LABORATORY CONDITIONS (75 [+ or -] 5% RH AND 12:12 H L:D) Parameter Temperature [degrees]C (Mean [+ or -] SE) ([dagger]) days Units 20 Net reproductive rate 9 /Gen 6.
However, quantitative information on life table parameters, such as intrinsic rate of increase (r), net reproductive rate ([R.
solenopsis at various levels of temperature and RH were used to compute the net reproductive rate ([R.
nu, Sanchez & Pereyra (1995) reported a higher net reproductive rate but lower values for the rate of population increase, and the finite rate of increase.