| 单词 | intermediate host |
| 释义 | > as lemmasintermediate host intermediate host n. Zoology an organism infected by a parasitic animal which then goes on to complete its life cycle in another host. ΚΠ 1878 Jrnl. Royal Microsc. Soc. 1 377 The ultimate form assumed by the larvae whilst still within the body of the intermediate host. 1892 Brady Addr. Tyneside Field Club 9 To complete the life-cycle of any one of these creatures [tape-worms], successive residence is necessary in the bodies of two distinct species of animal,..thus called the ‘intermediate host’ and the ‘final host’. 1901 Practitioner Mar. 273 It is parasitic in man and in a certain genus of mosquito (Anopheles); the former is its intermediate host and the latter its definitive host. 1925 A. D. Imms Gen. Textbk. Entomol. iii. 365 The latter issue from the galls and are divisible into winged gallicolæ migrantes (migrantes), which fly to the intermediate host, and gallicolæ non-migrantes which remain on the spruce and give rise to further fundatrices. 1971 E. R. Noble & G. A. Noble Parasitology (ed. 3) xxiv. 528/1 As a generalization, there is less host specificity when there are two intermediate hosts than when only one is employed. < as lemmas |
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