Corpus ID: 85710625

Genetic Characterization of Invasion and Hybridization: A Bittersweet (Celastrus spp.) Story

  title={Genetic Characterization of Invasion and Hybridization: A Bittersweet (Celastrus spp.) Story},
  author={David N Zaya},
Biological invasions threaten native biodiversity and invasions that involve reproductive interference, such as hybridization, can be especially detrimental to the persistence of native species. One general objective of my dissertation research was to determine if the decline of a North American vine, Celastrus scandens, in the eastern portion of its native range is related to reproductive interference from an introduced congener, C. orbiculatus. The second general objective was to examine how… Expand
Genetic characterization of hybridization between native and invasive bittersweet vines (Celastrus spp.)
The strong asymmetry in pollen flow that favors fecundity in introduced males has the potential to greatly accelerate the decline of native species by wasting limited female reproductive effort. Expand
Untangling the Twisted Tale of Oriental Bittersweet
of the introduction of one of eastern North America’s worst invasive plants, Oriental bittersweet (Celastrus orbiculatus Thunb.), are essentially unknown. According to Alfred Rehder in his seminalExpand


Hybrid vigor for clonal growth in Carpobrotus (Aizoaceae) in coastal California
It is tested the hypothesis that hybrid vigor for vegetative growth and resistance to herbivory contributes to successful invasion by hybrid morphotypes, and hybrids displayed higher growth than either parental species. Expand
Comparative performance of invasive and native Celastrus species across environmental gradients
This study shows the utility of manipulative experiments, particularly those using congeneric native species as benchmarks, for assessing the causes and predicting the course of invasions. Expand
Can hybridization cause local extinction: a case for demographic swamping of the Australian native Senecio pinnatifolius by the invasive Senecio madagascariensis?
The individual- and population-level consequences of hybridization between the Australian native Senecio pinnatifolius and the exotic Senecia madagascariensis were investigated with amplified fragment length polymorphism (AFLP) markers, and this information was used to estimate the annual loss of viable seeds. Expand
Distinguishing Native (Celastrus Scandens L.) and Invasive (C. Orbiculatus Thunb.) Bittersweet Species Using Morphological Characteristics1
Using morphological characteristics of both species growing naturally along a sand dune/forest ecotone, models confirmed that the two species can be discriminated effectively using fruit characters, notably fruit volume and seed number, and determined that at leaf out in the spring the leaves of the twospecies were folded differently in the bud allowing them to be successfully discriminated in the early spring. Expand
Patterns of hybridization and introgression between invasive Ulmus pumila (Ulmaceae) and native U. rubra.
This study indicates widespread hybridization between U. pumila and U. rubra and an asymmetric pattern of introgression toward U.pumila, and observed greater genetic diversity and new combination of alleles in the hybrids. Expand
Who threatens who? Natural hybridization between Lotus dorycnium and the island endemic Lotus fulgurans (Fabaceae)
Morphological and molecular markers suggest that gene flow between these two Lotus species is recurrent and polytopic, and the genetic integrity of the endangered L. fulgurans does not appear to be greatly compromised as interspecific gene flow is apparently unidirectional and biased towards L. dorycnium. Expand
Hybridization and the Extinction of Rare Plant Species
It is suggested that hybridization is an increasing threat to rare species because ecological barriers are being disrupted by human activities and the negative consequences of hybridization are unlikely to be compensated for by immigration from conspecific populations. Expand
Rapid Displacement of a Monoecious Plant Lineage Is Due to Pollen Swamping by a Dioecious Relative
A mechanistic explanation is provided for the rapid movement of two zones of contact between monoecious hexaploid and dioecious diploid populations of the wind-pollinated plant Mercurialis annua in northeastern and northwestern Spain. Expand
Increased genetic variation and evolutionary potential drive the success of an invasive grass
The results show that repeated introductions of a single species may inadvertently create harmful invaders with high adaptive potential, and multiple immigration events may trigger future adaptation and geographic spread of a species population by preventing genetic bottlenecks and generating genetic novelties through recombination. Expand
Effective range of reproductive interference exerted by an alien dandelion, Taraxacum officinale, on a native congener
The range of IPT exerted by Taraxacum officinale (an alien species) on a native dandelion is measured to indicate the spatial range from which alien dandelions should be removed to allow the conservation of natives. Expand