单词 | reproduction rate |
释义 | > as lemmasreproduction rate reproduction rate n. Biology the rate at which a species or population produces offspring or new individuals; spec. the proportion of offspring recruited to a population in a year as a fraction or percentage of that population.See also gross reproduction rate at gross adj. 6a, net reproduction rate n. at net adj. Compounds. ΚΠ 1904 Jrnl. Royal Statist. Soc. 67 532 The results would throw a good deal of light on the reproduction-rates of different social strata. 1987 M. Kochanski Northern Bushcraft (1988) xii. 271 When populations peak, winter food resources may be depleted leading to lower survival and reproduction rates. 2002 R. Porter Blood & Guts i. 3 These included..micro-organisms such as bacteria, viruses and protozoans, whose ultra-rapid reproduction rates produce severe illnesses within a host. < as lemmas |
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