| 释义 |
pædogenesis Biol.|piːdəʊˈdʒɛnɪsɪs|
Also (chiefly U.S.) pedo-.
[mod.L., coined in Ger. (K. von Baer 1866, in Bull. Acad. Imp. Sci. St.-Pétersbourg IX. 96), f. pædo- + genesis.]
Reproduction by larval or immature forms of animals, esp. certain insects; cf. neoteny b. Hence pædogeˈnetic a., pertaining to or characterized by pædogenesis.
1871W. S. Dallas tr. O. von Grimm in Ann. & Mag. Nat. Hist. VIII. 32, I had before me an insect [sc. a species of Chironomus] which is subject to what Von Baer calls pædogenesis. Ibid. 36 Different animals may be subject to pædogenesis at different stages of development. 1888Rolleston & Jackson Anim. Life 507 Pædogenesis or the production of ova by the immature animal is rare, and in Insecta always parthenogenetic. 1889Athenæum 13 Apr. 471/1 A parthenogenetic and *pædogenetic generation occurs in the life-cycle [of the blood-worm]. 1891F. V. Theobald Acct. Brit. Flies 42 The ovaries [of flies of the family Cecidomyidæ] become fully developed and bud off eggs; [Note] = Pædogenesis (i.e., the production of ova by the immature animal, and is in the insecta always parthenogenetic). 1895D. Sharp in Cambr. Nat. Hist. V. iv. 142 A very rare kind of parthenogenesis, called paedogenesis, has been found to exist in two or three species of Diptera. 1920H. Reinheimer Symbiosis ii. viii. 158 The ‘wages’ of a prolonged transgression against the law of Symbiosis is thus indeed death—in the shape of diathesis, dissolution, and of a kind of Paedogenesis—precocious sexuality. 1951Colyer & Hammond Flies Brit. Isles iii. 71 Parthenogenetic reproduction by immature stages is known as paedogenesis. Ibid. iv. 83 Those [Miastor larvae] which are paedogenetic have no ‘breast-bones’, while those which will pupate and produce normal flies possess this organ. 1964R. M. & J. W. Fox Introd. Compar. Entomol. vii. 243 Neoteny (pedogenesis) involves the precocious maturity of the ovary so that young are produced by a mother who has not reached the imaginal instar. |