1(Of animals or plants, especially of related species or populations) occurring within the same geographical area; overlapping in distribution. Compare with allopatric.
- Populations of sympatric species often fluctuate in partial synchrony.
- We assigned geographic areas using the distributions of allopatric and sympatric species as a guide: North America, Mexico, Central America, South America, and the Greater Antilles.
- These two sympatric species are reproductively isolated and represent highly divergent lineages in the genus.
1.1(Of speciation) taking place without geographical separation.
- Attention has focused on a number of problems, including reinforcement, sympatric speciation, and the ecological context of speciation.
- The concept of sympatric speciation by host-race formation remains contentious because of the restrictive conditions that many workers have suggested are required, based on models using assumptions that may not be true.
- Indeed, sympatric speciation events have been observed in controlled experiments, under natural conditions, and also demonstrated by simulation models.
- Example sentences
- In addition, their definition of ‘superspecies’ makes exceptions for narrow sympatry, which obliterates the definition, because ‘allospecies’ should form the components of a superspecies.
- Although the two species were not found in sympatry, a population of P. elegans was found only 9 km away from a P. actinia population in Santo Antonio da Patrulha county.
- As revealed by comparisons of molecular and morphologic data in modern species, non-hybrid populations form distinct morphologic clusters in sympatry, which do not overlap and are usually separated by gaps.
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