| 释义 |
allopatric, a. Biol.|æləʊˈpætrɪk|
[f. allo- + Gr. πάτρᾱ fatherland: see -ic.]
Applied to organisms that occupy different geographical areas. Opp. sympatric a. Hence alloˈpatry, the occurrence of allopatric forms.
1942E. Mayr Systematics & Origin of Species vii. 149 Two forms (or species) are allopatric, if they do not occur together, that is if they exclude each other geographically. 1953― et al. Methods & Princ. Syst. Zool. ii. 29 Closely related allopatric forms are usually subspecies of a polytypic species. Ibid. v. 101 The word allopatric is essentially an antonym of sympatric and means therefore geographical distribution without geographical overlap. There are five kinds of allopatry that may be encountered by the taxonomist. 1958Canadian Jrnl. Zool. XXXVI. 148 Reproductive isolation is more likely to be present between closely related sympatric species than between closely related allopatric species. 1960Evolution XIV. 82/1 The best estimate of the course of geographic speciation comes from analysis of disjunct, allopatric populations.
Add: alloˈpatrically adv.
1961Webster, Allopatrically. 1968Science 8 Mar. 1069/1 In the case of a chromosomal rearrangement which first establishes itself near the edge of a species distribution, one can imagine it spreading both inwards through the range of the species (stasipatrically) and outwards into previously unoccupied territory (allopatrically). 1987Bull. Brit. Ornith. Club CVII. 150 The presumption is that the 2 forms speciated allopatrically by the subdivision of a single parental form. 1992Jrnl. Plankton Res. XIV. 555 It appears to have evolved allopatrically during the Cretaceous as a result of continental drift. |