peripheral isolate

peripheral isolate

an isolated population at or beyond the normal range of the species.
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In contrast, one-way migration may occur as a form of secondary contact between a parent population and a peripheral isolate. We examine how these fundamentally different patterns of gene flow can influence whether reproductive isolation will evolve.
Historical biogeography of western peripheral isolates of the least shrew, Cryptotis parva.
Peripheral Indeter- Genus N Vicariance isolates Sympatric minate Phalaropus 2 1 0 1 0 Platycercus 5 3 0 1 1 Pteroglossus 2 2 0 0 0 Ramphastos 3 1 0 1 1 Sphyrapicus 3 2 0 0 1 Gymnopithys 3 3 0 0 0 Iodopleura 2 2 0 0 0 Diglossa 3 1 1 0 1 Melospiza 2 0 0 1 1 Ammodrammus 8 2 0 2 4 Zonotrichia 4 1 0 1 2 Pipilo 3 1 0 1 1 Molothrus 4 1 0 1 2 TOTAL 44 20 1 9 14 As percentage of total 100.0 45.4 2.3 20.5 31.8 For the 13 lineages, 45.4% of the speciation events were determined to be vicariant speciation, 2.3% peripheral isolates speciation, 20.5% sympatric speciation, and 31.8% were indeterminate.
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