Sentences with phrase «of sympatric»

Genetic tests also indicated a lack of breeding between the two killer whale types highlighting the distinctness of the sympatric Bigg's and resident killer whales on a local scale.

The species of wheat that we in the West use for bread only developed in the last few thousand years as a result of two episodes of sympatric speciation (different to selective breeding, but an agent of evolution none the less) and the various Shiraz, Char.donnay and Pinot Noir gra.pes we enjoy today, in the form of wine, were all developed and perfected in the last 100 years or so.

The species of wheat that we in the West use for bread only developed in the last few thousand years as a result of two instances of sympatric speciation (different to selective breeding, but an agent of evolution none the less).

Not exact matches

Because neither allopatric nor sympatric speciation require the extinction of the parent species.

The Jehol birds faced competition with pterosaurs, and occupied sympatric habitats with nonavian theropods, some of which consumed birds.

There are three main ideas concerning the emergence of new species (Modes of Speciation), each based on the degree to which populations undergoing this process are geographically isolated from one another (allopatric speciation, sympatric speciation, parapatric speciation).

My model predicts that the coexistence of two species in a sympatric way can happen only if there is low competition or weak competitive exclusion between them and a kind of avoidance of competition that leads to a slight shift of the niche of a meta - population, which accumulated a series phenotypic difference due to genomic inclusions coming from other sources of genes.

Sympatric speciation occurs when new species emerge without separation, such as the 13 species of Galapagos finch or Africa's cichlid fish.

Now that Mainland et al have published «The missense of smell: functional variability in the human odorant receptor repertoire» and Foote et al have published «Tracking niche variation over millennial timescales in sympatric killer whale lineages,» the similarities at the top of the aquatic and terrestrial food chains attest to the power of conserved molecular mechanisms to link cause and effect across all species via olfaction and odor receptors, which is what I detailed in the review I submitted last week.

The East African cichlid fishes of Lake Malawi are ideal for investigating behavioral adaptation to environment, as within genera, fine - scale niche partitioning has resulted in sympatric sister species that live in definable microhabitats with distinct selection pressures.

The relative roles of genes and rearing environment on the spatial cognitive ability of two sympatric species of threespine stickleback.

A recent study found that genetic differentiation was much lower throughout a large fraction of the genome between the now sympatric species pair Helianthus annuus and H. petiolaris, which have diverged for ∼ 1.0 million years, than between more closely related species with non-overlapping geographical ranges [34], [35].

«Exploitation of the same habitat, but key differences at important times of the year, suggests that competition between a single species works to preserve the different phenotypes we observed - whilst simultaneously creating the potential for so - called sympatric speciation, i.e. the potential for a new species to form without geographic isolation,» says Hawley.

Or they can evolve to mate in different places, for example on two different types of fruit, as in the example given above for sympatric speciation.

Most harbour porpoises found dead on the north - east coast of Scotland show signs of attack by sympatric bottlenose dolphins, but the reason (s) for these violent interactions remain (s) unclear.