hybrid swarm


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hybrid swarm

a group of genetically variable organisms resulting from the hybridization of two previously distinct and separate populations. Subsequent crossing and backcrossing results in a very variable population as a result of segregation. Often the genetical variability appears as morphological variability, such as different colour forms. Where different colour forms of an animal occur in different parts of the range, the hybrid swarm is characterized by the presence of all or a wide range of these forms.
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We used these analyses of the AFLP data to assess whether the individuals in the Snowslide Spring population were genetically identical to either parental species, or whether there was admixture of the parental species, creating a hybrid swarm.
First, hybrid swarms may be ephemeral and have no long-lasting impact on the current parental species, thus maintaining the existing biodiversity.
Until a few years ago, the Salinas Valley hybrid swarm appeared to be restricted to sites in close proximity to the original A.
During a study to identify pollinators of a hybrid swarm of azalea, Rhododendron arborescens (Pursh) Torrey, R.
Hybridization and introgression among species of sunfish (Lepomis): analysis of mitochondrial DNA variability in a hybrid swarm between subspecies of bluegill sunfish (Lepomis macrochirus).
In a eucalypt hybrid swarm, we found that of 28 specialists, 19 were significantly more abundant on the hybrid phenotype closest to their preferred host species, 8 were equally abundant on different classes of hybrids, and only 1 was most abundant on the hybrid phenotype least similar to its preferred host species.
If 10% gene flow occurs in each generation and hybrids are fit, why doesn't a hybrid swarm eventually result that is similar to those typical of interracial hybrid zones within H.
In this paper, we assess changes, over a five-year period, in the genetic structure of a hybrid swarm involving introduced sheepshead minnow (Cyprinodontidae: Cyprinodon variegatus) and the Pecos pupfish (C.
Washington, May 23 (ANI): Certain species of stickleback fish have collapsed into hybrid swarms as water clarity in their native lakes has changed, and certain species of tree frogs have collapsed as vegetation has been removed around their shared breeding ponds.
However, these habitats often are found in close proximity throughout the central and western United States, resulting in the production of innumerable hybrid swarms or mosaic hybrid zones.
2004) suggest that if successful reproduction of female hybrids is common, then hybrid swarms could decrease the extent of pure lynx at the southern periphery of the species range.