By George W. Cox

ISBN-10: 1559630094

ISBN-13: 9781559630092

In Alien Species and Evolution, biologist George W. Cox experiences and synthesizes rising details at the evolutionary adjustments that take place in crops, animals, and microbial organisms once they colonize new geographical parts, and at the evolutionary responses of the local species with which alien species interact.
The booklet is large in scope, exploring info throughout a wide selection of taxonomic teams, trophic degrees, and geographic parts. It examines theoretical subject matters regarding fast evolutionary swap and helps the rising idea that species brought to new actual and biotic environments are rather susceptible to quick evolution. the writer attracts on examples from all components of the realm and all significant surroundings kinds, and the range of examples used supplies enormous perception into the styles of evolution which are prone to consequence from the big advent of species to new geographic areas that's at present happening round the globe.
Alien Species and Evolution is the one state of the art evaluation and synthesis to be had of this seriously very important subject, and is a necessary paintings for someone curious about the hot technological know-how of invasion biology or the threats posed by way of invasive species.

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In addition, following introduction of Argentine ants to North America, natural selection now is apparently acting against spread of genetic variability within the continental population (Tsutsui et al. 2003). Ants from colonies of low genetic diversity attack and kill those from more genetically diverse colonies. This behavior tends to reinforce the supercolony structure of the overall population. Assessing Genetic Variability The case history of the Argentine ant in North America demonstrates that the degree of genetic variability of an alien species may have major implications for its impact.

In the northeastern United States, 6–7% of the alien plants that became established before 1900, and are now thoroughly naturalized, were introduced via contaminated crop seed (Mack and Erneberg 2002). Many of these species introductions were truly inadvertent, their seeds being accidentally included because of inadequate techniques of seed cleaning. In some cases, however, they were deliberately added by seed merchants to increase the volume of their seed sales. These forms, known as agroecotypes, are largely restricted to stands of cultivated crops.

Nonnative ants, particularly those with worker castes that fight in competition with other ants, tend to be smaller-bodied than congeneric native species (McGlynn 1999), although the benefit of small size is not certain. For introduced land bird species, Cassey (2002) found that habitat generalism tended to favor establishment success, together with nonmigratory behavior and lack of sexual dimorphism in plumage. Dietary and nest site flexibility have also been related to establishment success of birds introduced to islands (McLain et al.

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Alien species and evolution by George W. Cox


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