The isolated population of Cebus albifrons in NE Vichada with parapatric
Sapajus apella to the west and to the south suggests to me that Sapajus apella arrived after Cebus albifrons and that the more recent species was able to out-compete Cebus albifrons.
In contrast, the parapatric
west coast transient population in the coastal waters of southeastern Alaska, British Columbia, and Washington State numbers more than 200 individuals (Ford et al.
eupeus show a parapatric
distribution with a contact zone formed at the boundary of their ranges.
More specifically, Geomys bursarius is parapatric
with Thomomys talpoides, Thomomys bottae, and Cratogeomys castanops; T.
The number of supralabials in blind snakes is a genetically conservative character, and any 1/2 condition of the supralabials of any individual may represent one of two possibilities: (1) an aberrant condition (seen rarely within the species) or (2) a hybrid between two species with parapatric
2000) or from parapatric
models of speciation (Jiggins & Mallet, 2000), and complete isolation is rarely necessary to produce differentiation (Barton & Charlesworth, 1984).
significant levels of shape variation across parapatric
boundaries), coupled with previous results concerning sexual isolation between parapatric
populations in G.
They examined genetic variation in the acoustic signals of three parapatric
grasshopper populations (Chorthippus parallelus).
The second mode involves a change in host plants from ancestral to descendent species after either allopatric, parapatric
, or possibly sympatric speciation.
In Israel, four allopatric or parapatric
chromosomal races, with 2n = 52, 54, 58 and 60 chromosomes, were discovered (Wahrman et al.
These characteristics make species distribution modeling an excellent tool for studying the parapatric
boundaries of species.
The speciation process was suggested to occur in a parapatric
context (Theiler et al.