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1. Occupying the same or overlapping geographic areas. Used of organisms, especially populations of the same or closely related species.
2. Occurring among populations having such a distribution: sympatric speciation.

[syn- + Greek patrā, fatherland (from patēr, patr-, father; see pəter- in Indo-European roots) + -ic.]

sym·pat′ri·cal·ly adv.
sym′pat·ry (sĭm′păt′rē, -pə-trē) n.


(Biology) (of biological speciation or species) taking place or existing in the same or overlapping geographical areas. Compare allopatric
[C20: from syn- + -patric, from Greek patra native land, from patēr father]
symˈpatrically adv


(sɪmˈpæ trɪk, -ˈpeɪ-)

adj. Biol., Ecol.
originating in or occupying the same geographical area.
[1900–05; sym- + Greek pátr(ā) fatherland (derivative of patḗr father) + -ic]
sym′pa•try (-pə tri) n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.sympatric - (of biological species or speciation) occurring in the same or overlapping geographical areas
biological science, biology - the science that studies living organisms
allopatric - (of biological species or speciation) occurring in areas isolated geographically from one another
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References in periodicals archive ?
Sivalhippus theobaldi was apparently rare in the Siwalik Hills, it seems, to have sympatrically coexisted with first Sivalhippus nagriensis and later the more derived Sivalhippus perimensis and the immigrant clade Cremohipparion antelopinum (Eisenmann et al.
Collectively, the two parasitoid species may intensify biocontrol of ACP in areas where they operate sympatrically.
The lesser yellow-headed vulture Cathartes burrovianus is one of several sympatrically occurring vulture species in the New World tropics (Wetmore 1950, 1964).
Although they occur sympatrically, their differences in searching behavior result in a degree of niche partitioning, with Muscidifurax species searching near the surface of host-breeding substrates and S.
The interspecies hybrid is rare in nature, although adult hybrids have been found in areas where the two pure species live sympatrically (Brown 1995).
Human infections in Malaysian Borneo, the portion of Malaysia on the island of Borneo, have divergent genetic subpopulations that are seen in the different macaque species locally, indicating that 2 independent zoonoses may be occurring sympatrically (9).
make up a group of medium-sized mammals that occur sympatrically throughout their respective ranges.
neuquensis carapace shape for isolated populations and with populations living sympatrically with A.
Some of these Jivarus species occur sympatrically, but most have small ranges and many seem to be parapatric or form populations that are isolated from one another.
nitedula live sympatrically and have similar habitat requirements.
These specimens grow sympatrically with the typical individuals, however no intermediary forms were observed.
Two species with very similar ecological niches are expected to either partition their limiting resources or not to occur sympatrically (MacArthur and Levins, 1967).