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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 ?
Lastly, species level dietary information should be gathered to compare sympatric salamander prey selection and composition.
among sexes and age classes) and trophic resources partitioning among sympatric and syntopic species (Toft 1981, Maneyro and da Rosa 2004, Dure et al.
heterophylla is the only representative of the genus in the studied site, thus selfing is not likely a mechanism to reduce interspecific pollen flow among sympatric species as proposed by Matallana et al.
The distribution of the Eastern lineage ranged over almost the entire northern part of Germany, with partial sympatric occurrence of the Carpathian lineage in the northeast (sites 34, 68, 77) and the Western lineage in the central and northwest (sites 41, 52, 53, 57, 93, 97, 98).
In a small volcanic lake in Tanzania, what was once a single species of cichlid fish is slowly becoming two, a process known as sympatric speciation.
Feline immunodeficiency virus and feline leukemia virus infection in free-ranging guignas (Leopardus guigna) and sympatric domestic cats in human perturbed landscapes on Chiloe Island, Chile.
Sympatric coexistence of atherinopsids is accomplished by habitat and trophic partitioning.
ii) We will then discover additional loci implicated in diverging incipient sympatric taxa that have undergone recent dramatic call frequency shifts.
Effects of water clarity and other environmental factors on trophic niches of two sympatric piscivores.
It grows in Paraguay, west-central and southeastern Brazil, forming small but dense populations in confined sympatric areas--swamps--among populations of the parental species (A.
Given the clinical and pathologic changes observed and poor knowledge of the parasite's New Zealand host and geographic distribution, further work is recommended for this and sympatric parrots, to understand relationships among the host, parasite, environment, and expression of disease.