Attention has focused on a number of problems, including reinforcement, sympatric speciation, and the ecological context of speciation. |
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One of the chief roles of calls among songbirds is to find mates, and that takes me back to the topic of sympatric speciation. |
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These two sympatric species are reproductively isolated and represent highly divergent lineages in the genus. |
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Although cryptic species have often been discovered, they are often themselves wide-ranging, and frequently sympatric with congeners. |
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Symbols overlap where sampled populations are sympatric or geographically proximate. |
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Tissue-level concentrations of hydrophilic and lipophilic extracts caused high levels of mortality in a sympatric pennate diatom. |
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Indeed, sympatric speciation events have been observed in controlled experiments, under natural conditions, and also demonstrated by simulation models. |
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It has been postulated that the model and the mimic should always occur in the same area i.e., be sympatric. |
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In particular, Muller anticipated that the antagonistic relationship between selection and recombination would be critical in models of sympatric speciation. |
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Molecular karyotype of sympatric L. braziliensis populations displayed extensive chromosomal polymorphism. |
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The effects of sympatric occurrence on the territorial vocalizations of the vinaceous dove Streptopelia vinacea and the ring-necked dove S. capicola. |
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The lack of occipital lobes and the finer scales sets the sympatric Chamaeleo goetzi apart from this southern highland species. |
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Populations of sympatric species often fluctuate in partial synchrony. |
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The occurrence of several crossable sympatric species from the genus Pinus in Asia has led to suggestions that some species arose as a result of hybridization. |
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They conclude that sympatric speciation is possible, but only when there is some kind of environmental heterogeneity that is sufficient to interfere with gene flow. |
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Six such groups have been identified as semispecies, or incipient species, two or three of which are sympatric in many localities. |
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Research on the origin of dogs, and on their unique, sympatric relationships with humans, is ongoing. |
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For example, interspecific agonistic interactions select for dull-colored male flycatchers that experience less interference from more aggressive, sympatric congeners. |
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Most studies of interspecific competition consider sympatric congeners because it is assumed that closely related species tend to compete more strongly. |
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Native American tribes sympatric with brown bears often view them with a mixture of awe and fear. |
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There is some evidence of sympatric speciation of cichlid fish in small African crater lakes. |
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Breeding habitat selection of sympatric White-tailed, Rock and Willow Ptarmigan in the southern Yukon Territory, Canada. |
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Occupancy, detection, and habitat associations of sympatric lagomorphs in early-successional bottomland hardwood forests. |
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Disruption of pheromone communication in three sympatric leafroller pests of apple in British Columbia. |
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Breeding ecology of sympatric Greater and Lesser scaup in the subarctic Northwest Territories. |
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Resource partitioning in sympatric populations of collared peccaries and feral hogs in southern Texas. |
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Comparative energetic and the development of bioenergetics models for sympatric estuarine piscivores. |
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Soug discrimination suggests premating isolation among sympatric indigobird species and host races. |
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One type of sympatric speciation involves crossbreeding of two related species to produce a new hybrid species. |
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In Texas and oklahoma, white-eyed vireos are sympatric locally with black-capped vireos. |
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In areas in North America where red fox and coyote populations are sympatric, fox ranges tend to be located outside coyote territories. |
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Parasitic arthropods of sympatric meadow voles and white-footed mice at Fort Detrick, Maryland. |
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Feeding habits of sympatric Long-eared Owl Asio otus, Tawny Owl Strix aluco and Barn Owl Tyto alba in a Mediterranean coastal woodland. |
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This species leaves tend to be less spiney in deeper shade and also on the older leaves and is often sympatric with Acanthus bracteates. |
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We have to wait for permission to visit potential areas of sympatry on private land, so we start the survey by heading to a potential sympatric area at a place called Cerra Prieto. |
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Partitioning of food resources among sympatric species based on seed size has been documented in a number of avian granivore communities. |
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Subdivision of food resources among sympatric avian granivores often is based on bill-size-related differences in seed-size selection. |
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The collapse of the sympatric species pair in Enos Lake is thought to be associated with reduced macrophyte coverage after introduction of crayfish, in addition to other factors related to water quality. |
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Life history divergence on sympatric diploid and polyploid populations of brine shrimp Artemiaparthenogenetica. |
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Clade-specific markers will be determined and their applicability will be evaluated for clinical typing of endemic and imported, human and canine infections and for pilot studies of sympatric and allopatric populations. |
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Several research projects continued to work throughout the civil war, in particular WCS, the Max Planck Institute, and in Kahuzi-Biega NP a project on sympatric gorillas and chimpazees, with Kyoto University. |
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They are also known as sympatric speciation, alluding to the fact that quantum speciation often leads to speciation between populations that exist in the same territory or habitat. |
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Target number of sympatric L. braziliensis isolates was achieved with sound clinical data: 35 cutaneous and 8 mucosal isolates from Pilcopata, 29 cutaneous and 20 mucosal isolates from Isibo-Securo. |
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This provides a value that has been used to correct for the potential overestimation of chimpanzees at sites where they are sympatric with gorillas. |
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Finally, in sympatric speciation species diverge without geographic isolation or changes in habitat. |
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Red foxes feature prominently in the folklore and mythology of human cultures with which they are sympatric. |
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In Scotland, the diet of this species differs significantly from that of sympatric golden eagles, as is also the case in Norway. |
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Natural crossbreeding between sympatric species of the Phyllosoma complex indicate the existence of only one species with morphologic and genetic variations. |
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Also, research has shown that species will shift their use of microhabitat, often using a greater variety of microhabitats, when other sympatric species are added or removed. |
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Temperature induced range expansion can cause novel range overlap between formerly allopatric species and can lead to extensive hybridisation in these new sympatric areas. |
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A review of the studies in the competitive effects of dogs on sympatric carnivores did not mention any research on competition between dogs and wolves. |
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Where they are sympatric, Arctic foxes may also escape competition by feeding on lemmings and flotsam, rather than voles, as favoured by red foxes. |
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