Geographic parthenogenesis and plant-enemy interactions in the common dandelion
نویسندگان
چکیده
منابع مشابه
Adapting with the enemy: local adaptation in plant-herbivore interactions.
Local adaptation by natural selection is a fundamental process in population differentiation and speciation. To determine if populations are adapted to local conditions, researchers use reciprocal transplant experiments: individuals are moved among populations to compare their performance in familiar (local) and foreign (nonlocal) conditions. These experiments are meant to evaluate whether adap...
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Understanding why some exotic species become invasive is essential to controlling their populations. This review discusses the possibility that two mechanisms of invasion, release from natural enemies and increased resource availability, may interact. When plants invade new continents, they leave many herbivores and pathogens behind. Species most regulated by enemies in their native range have ...
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In many plants and animal species, asexuals are more common in marginal habitats such as high latitudes or altitudes than their closely related sexual counterparts. Here we propose a new hypothesis to explain this pattern called “geographic parthenogenesis”. In marginal habitats, populations may often exist as metapopulations with high degrees of subdivision and local extinction and recolonizat...
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A recent study reports striking similarities in the origin and spread of parthenogenesis in two distantly related animals of the Australian arid zone, suggesting that the loss of sex was driven by a very general selective force.
متن کاملThe evolution of geographic parthenogenesis in Timema walking-sticks.
Phylogenetic studies of asexual lineages and their sexual progenitors are useful for inferring the causes of geographical parthenogenesis and testing hypotheses regarding the evolution of sex. With five known parthenogens and well-studied ecology, Timema walking-sticks are a useful system for studying these questions. Timema are mainly endemic to California and they exhibit the common pattern o...
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ژورنال
عنوان ژورنال: BMC Evolutionary Biology
سال: 2013
ISSN: 1471-2148
DOI: 10.1186/1471-2148-13-23