| 释义 |
sympatric, a. Biol.|sɪmˈpætrɪk|
[f. sym- + Gr. πάτρα fatherland: see -ic.]
Occurring in the same geographical region, or in overlapping regions. Opp. allopatric a.
1904E. B. Poulton in Trans. Entomol. Soc. V. p. xc, Forms found together in certain geographical areas and not in other areas. Such groups may be called Sympatric. 1942E. Mayr Systematics & Origin of Species vii. 149 The gaps between sympatric species are absolute, otherwise they would not be good species; the gaps between allopatric species are often gradual and relative. 1953,1958[see allopatric a.]. 1974Nature 16 Aug. 540/1 The two species are sympatric throughout much of their range. 1978Ibid. 21 Sept. 256/1 White makes a good argument for sympatric speciation on small oceanic islands with many species and also for allochronic speciation.
Hence symˈpatrically adv.; ˈsympatry, the occurrence of sympatric species or forms.
1904E. B. Poulton in Trans. Entomol. Soc. V. p. xc, The occurrence of forms together may be termed Sympatry, and the discontinuous distribution of similar forms Asympatry. 1968Amer. Mus. Novitates No. 2349. 6 The grasslands of this region are generally similar to those of the area of sympatry west of Bahía Blanca. 1970S. Afr. Jrnl. Sci. LXVI. 392/1 The two species have been found to occur sympatrically over a depth range of 14 to 33 metres. 1973Nature 9 Feb. 406/2 The planting of dense agricultural stands of larval foodplants..[is] believed to have affected the species' geographical ranges and abundances, causing extensive sympatry over much of the eastern United States. 1975Jrnl. Zool. CLXXVII. 330 True polymorphism is thus restricted to multiple forms of a species which regularly occur sympatrically (and synchronically) within a population. |