Furthermore, the results clearly indicate that in this species, spine color variation represents an intraspecific polymorphism, since genetic identities (GI) were significantly high for morphotypes living in sympatry and low for morphotypes living in allopatry
Review of the genus Sinaloa (Acrididae: Melanoplinae): syntopy and allopatry
in the lowlands of western Mexico.
Keywords: Adaptive radiation, biogeography, allopatry
, parapatry, evolution
examination, to be ecological niches that equate with allopatry
Despite the initial popularity of this concept of "character displacement," the phenomenon and its dual, "character release" (Grant 1972) in areas of allopatry
from a competitor, were widely seen for many years as uncommon at best, and alternative explanations for geographic variation are often available (Grant 1972).
This southern hemisphere lineage of the blue mussel Mytilus galloprovincialis has been diverging in allopatry
from northern hemisphere conspecifics for about 0.
xerampelinus occurs in allopatry
(Volcan Baru and Cerro de la Muerte) or where the two species meet (Volcan Irazu).
The faster rate of evolution of bindin between species in sympatry compared with those in allopatry
suggests that reinforcement selection has been instrumental in driving rapid diversification of this GRP (Metz et al.
Histories of allopatry
, expansion, and habitat loss are not always readily apparent from contemporary species distributions (McGovern et al.
Current natural hybrids and populations are fit after the approximately 9,000 generations that have arisen since the origin of the HZ, during which recombination has broken down the gene complexes underlying the epistatic incompatibilities generated in allopatry
(see also Shuker et al.
Although these two taxa are not sister species and the boundary between the Great Fish and Kei catchments therefore not a vicariant feature contributing to speciation, it may well now limit dispersal and maintain the allopatry
of these lineages.
Recently, Turner and Mallet (1996) suggested that mimicry rings in Heliconius did not originate via "biotic drift" in allopatry
and in conjunction with Pleistocene climatic-vegetational fluctuations (as proposed by Brown et al.