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.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
(3.) Tammy Steeves, et al., "Genetic Analyses Reveal Hybridization but No Hybrid Swarm in One of the World's Rarest Birds," Molecular Ecology, Vol.19 (2010): 50905100.
Singh [31] present a new hybrid swarm intelligence heuristics called HGWOSCA that is exercised on twenty-two benchmark test problems, five biomedical dataset problems, and one sine dataset problem.
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. Admixture of the two parental species is occurring in the Snowslide Spring population, with P franciscana alleles more highly represented.
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).
Guo, "A novel two-stage hybrid swarm intelligence optimization algorithm and application," Soft Computing, vol.
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 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.
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.
Occasionally it produces a burst of variation, called a hybrid swarm (Gilliard 1959; Stebbins 1959; Mayr 1963; Ports and Reid 1985).