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The Lancet, 1973
Net reproduction rate is considered irrelevant to discussions of population growth in England. What is more meaningful is the average growth rate per generation. An average growth rate of 1.2 per generation or 1% annually seems to be politically acceptable; however it is too high an increase because it will mean a population doubling in 60 years ...
A.J. Davey, M.A. Stockham
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Net reproduction rate is considered irrelevant to discussions of population growth in England. What is more meaningful is the average growth rate per generation. An average growth rate of 1.2 per generation or 1% annually seems to be politically acceptable; however it is too high an increase because it will mean a population doubling in 60 years ...
A.J. Davey, M.A. Stockham
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Reproductive rates in schizophrenic outpatients
Acta Psychiatrica Scandinavica, 1993We investigated the marriage rates, the reproductive rates and the marital reproductivity of schizophrenic outpatients in Japan. A total of 553 patients with DSM‐III‐R‐diagnosed schizophrenia at the Teikyo University Hospital, Tokyo, Japan were compared with age‐ and sex‐matched outpatients at surgical clinics of the same hospital.
S, Nanko, J, Moridaira
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On Net Reproductive Rate and the Timing of Reproductive Output
The American Naturalist, 2008Understanding the relationship between life-history patterns and population growth is central to demographic studies. Here we derive a new method for calculating the timing of reproductive output, from which the generation time and its variance can also be calculated.
De-Camino-Beck, T., Lewis, M.A.
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Selection for reproductive rate in Rambouillet sheep: Estimated genetic change in reproductive rate
Small Ruminant Research, 1993Abstract Rambouillet sheep were selected for high or low reproductive rate based on an index of reproductive rate, reproductive index = dam's total lifetime lambs born/(age in years-1). Selected ewes were first born in 1969. A random bred control line was established from the remaining foundation ewes with the first ewes born in 1973.
P.J. Burfening +3 more
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Reproductive Span and Rate of Reproduction Among Hutterite Women
Fertility and Sterility, 1957As studies of procreative capacity in the human female are seriously limited by the fact that it is difficult to find sizable populations for which accurate data can be obtained and which do not practice contraception it is fortunate that a substantial body of new data has become available concerning a contemporary American community--the Hutterites ...
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Aphid growth and reproductive rates
Entomologia Experimentalis et Applicata, 1984AbstractAphid size, although generally a good indicator of fecundity is not a good indicator of aphid performance over a wide range of conditions. In general, the greater the mean relative growth rate (MRGR) of apterous morphs of Rhopalosiphum padi (L.), the greater their fecundity.
S. R. Leather, A. F. G. Dixon
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