Wallacen.

Brit.

/ˈwɒlᵻs/, U.S.

/ˈwɔləs/,

/ˈwɑləs/

Etymology: < the name of Alfred Russel Wallace (1823–1913), British naturalist.

Used attributively or in the possessive to designate concepts originated by Wallace or related to his work.

a. Wallace effect n. the evolution of reproductive isolation between sympatric species.

ΘΚΠ

the world > life > biology > biological processes > evolution > [noun] > processes or types of evolution

transmutation1626

substitution1822

subspeciation1826

metamorphosis1835

phytogenesis1847

phytogeny1850

anamorphosis1852

correlation1859

advergence1861

convergence1861

phylogeny1869

ontogeny1872

recapitulation1874

ontogenesis1875

phylogenesis1875

biogenesis1876

abiogenesis1884

anagenesis1889

tachygenesis1893

orthogenesis1895

adaptive radiation1898

speciation1906

microevolution1911

subspeciation1921

raciation1934

orthogenetics1937

encephalization1938

proterogenesis1938

allomorphosis1941

cladogenesis1953

Wallace effect1966

metachromism1968

punctuation1976

speciational evolution1988

tachygen-

1966 V. Grant in Amer. Naturalist 100 99 It seems fitting and desirable to designate the process of selection for reproductive isolation as the Wallace effect.

1981 Amer. Jrnl. Bot. 68 1247/2 The sympatric origin of isolating mechanisms, the Wallace effect, postulates that those individuals in sympatric populations of the incipient species when crossed with members of the other species waste gametes in so doing, due to sterility or inviability of their progeny.

b. Wallace line n. (also Wallace's line) a hypothetical boundary proposed by Wallace in 1858 as separating the South-East Asian and Australasian biogeographical regions.

ΘΚΠ

the world > the earth > region of the earth > zone or belt > [noun] > biogeographical zone > boundary

Wallace line1868

continental divide1869

timberline1896

tree-limit1934

1868 T. H. Huxley in Proc. Zool. Soc. 313 Passing south of India and Indo-Malaisia [sic], but north of the Nicobar islands, the boundary in question would coincide with what may be called ‘Wallace's line’, between the Indian and the Papuan divisions of the Malay archipelago.

1912 Rep. 81st Meeting Brit. Assoc. Advancem. Sci. 1911 435 For fresh-water fishes Wallace's Line is..of fundamental importance.

1957 P. J. Darlington Zoogeogr. vii. 469 A small fraction of the Oriental mammal fauna extends for a considerable distance across Wallace's Line.

1958 A. Toynbee East to West xv. 44 Nor am I talking here of ‘the Wallace line’ between the gum trees and marsupial mammals of Australasia and the standard flora and fauna of the rest of the world.

1982 New Scientist 3 June 653/1 Examination of the fauna..on Bali and the adjacent islands led him to define the ‘Wallace Line’—the division between the Oriental fauna to the west and the Australasian forms to the east and north.

This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2021).

单词	wallace
释义	Wallacen. Brit. /ˈwɒlᵻs/, U.S. /ˈwɔləs/, /ˈwɑləs/ Etymology: < the name of Alfred Russel Wallace (1823–1913), British naturalist. Used attributively or in the possessive to designate concepts originated by Wallace or related to his work. a. Wallace effect n. the evolution of reproductive isolation between sympatric species. ΘΚΠ the world > life > biology > biological processes > evolution > [noun] > processes or types of evolution transmutation1626 substitution1822 subspeciation1826 metamorphosis1835 phytogenesis1847 phytogeny1850 anamorphosis1852 correlation1859 advergence1861 convergence1861 phylogeny1869 ontogeny1872 recapitulation1874 ontogenesis1875 phylogenesis1875 biogenesis1876 abiogenesis1884 anagenesis1889 tachygenesis1893 orthogenesis1895 adaptive radiation1898 speciation1906 microevolution1911 subspeciation1921 raciation1934 orthogenetics1937 encephalization1938 proterogenesis1938 allomorphosis1941 cladogenesis1953 Wallace effect1966 metachromism1968 punctuation1976 speciational evolution1988 tachygen- 1966 V. Grant in Amer. Naturalist 100 99 It seems fitting and desirable to designate the process of selection for reproductive isolation as the Wallace effect. 1981 Amer. Jrnl. Bot. 68 1247/2 The sympatric origin of isolating mechanisms, the Wallace effect, postulates that those individuals in sympatric populations of the incipient species when crossed with members of the other species waste gametes in so doing, due to sterility or inviability of their progeny. b. Wallace line n. (also Wallace's line) a hypothetical boundary proposed by Wallace in 1858 as separating the South-East Asian and Australasian biogeographical regions. ΘΚΠ the world > the earth > region of the earth > zone or belt > [noun] > biogeographical zone > boundary Wallace line1868 continental divide1869 timberline1896 tree-limit1934 1868 T. H. Huxley in Proc. Zool. Soc. 313 Passing south of India and Indo-Malaisia [sic], but north of the Nicobar islands, the boundary in question would coincide with what may be called ‘Wallace's line’, between the Indian and the Papuan divisions of the Malay archipelago. 1912 Rep. 81st Meeting Brit. Assoc. Advancem. Sci. 1911 435 For fresh-water fishes Wallace's Line is..of fundamental importance. 1957 P. J. Darlington Zoogeogr. vii. 469 A small fraction of the Oriental mammal fauna extends for a considerable distance across Wallace's Line. 1958 A. Toynbee East to West xv. 44 Nor am I talking here of ‘the Wallace line’ between the gum trees and marsupial mammals of Australasia and the standard flora and fauna of the rest of the world. 1982 New Scientist 3 June 653/1 Examination of the fauna..on Bali and the adjacent islands led him to define the ‘Wallace Line’—the division between the Oriental fauna to the west and the Australasian forms to the east and north. This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2021). < n.1868
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