Definitions for "Sympatric speciation"
speciation in which the evolution of reproductive isolating mechanisms occurs within the range and habitat of the parent species. This form of speciation may be common in parasites.
(sim pat´ rik) [Gr. sym: same + patria: homeland] • The occurrence of genetic reproduction isolation and the subsequent formation of new species without any physical separation of the subpopulation. (Contrast with allopatric speciation, parapatric speciation.)
Development of a genetic discontinuity within a population even in the absence of geographic separation; also see Speciation, Allopatric Speciation