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Full-Text Articles in Life Sciences

Genetic Divergence In The Small Indian Mongoose (Herpestes Auropunctatus), A Widely Distributed Invasive Species, C-G. Thulin, D. Simberloff, A. Barun, Gary Mccracken, M. Pascals, A. Islam Jul 2006

Genetic Divergence In The Small Indian Mongoose (Herpestes Auropunctatus), A Widely Distributed Invasive Species, C-G. Thulin, D. Simberloff, A. Barun, Gary Mccracken, M. Pascals, A. Islam

Gary F. McCracken

The combination of founder events, random drift and new selective forces experienced by introduced species typically lowers genetic variation and induces differentiation from the ancestral population. Here, we investigate microsatellite differentiation between introduced and native populations of the small Indian mongoose (Herpestes auropunctatus). Many expectations based on introduction history, such as loss of alleles and relationships among populations, are confirmed. Nevertheless, when applying population assignment methods to our data, we observe a few specimens that are incorrectly assigned and/or appear to have a mixed ancestry, despite estimates of substantial population differentiation. Thus, we suggest that population assignments of individuals ...


Economic Value Of The Pest Control Service Provided By Brazilian Free-Tailed Bats In South-Central Texas, Gary Mccracken, C. Cleveland, M. Betke, P. Federico, J. Frank, T. Hallam, H. Horn, J. Lopez, R. Medellin, A. Moreno-Valdez, C. Sansone, J. Westbrook, T. Kunz May 2006

Economic Value Of The Pest Control Service Provided By Brazilian Free-Tailed Bats In South-Central Texas, Gary Mccracken, C. Cleveland, M. Betke, P. Federico, J. Frank, T. Hallam, H. Horn, J. Lopez, R. Medellin, A. Moreno-Valdez, C. Sansone, J. Westbrook, T. Kunz

Gary F. McCracken

Brazilian free-tailed bats (Tadarida brasiliensis) form enormous summer breeding colonies, mostly in caves and under bridges, in south-central Texas and northern Mexico. Their prey includes several species of adult insects whose larvae are known to be important agricultural pests, including the corn earworm or cotton bollworm (Helicoverpa zea). We estimate the bats' value as pest control for cotton production in an eight-county region in south-central Texas. Our calculations show an annual value of $741 000 per year, with a range of $121 000–$1 725 000, compared to a $4.6–$6.4 million per year annual cotton harvest.

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Linking Bats To Emerging Diseases, M. Fenton, M. Davison, T. Kunz, Gary Mccracken Jan 2006

Linking Bats To Emerging Diseases, M. Fenton, M. Davison, T. Kunz, Gary Mccracken

Gary F. McCracken

DOI: 10.1126/science.311.5764.1098c


Functional And Evolutionary Ecology Of Bats, Gary Mccracken Dec 2005

Functional And Evolutionary Ecology Of Bats, Gary Mccracken

Gary F. McCracken

Every three years a major international conference on bats draws the leading workers in the field to a carefully orchestrated presentation of the research and advances and current state of understanding of bat biology. Bats are the second most populous group of mammalia species, after rodents, and they are probably the most intensively studied group of mammals. Virtually all mammologists and a large proportion of organismic biologists are interested in bats. The earlier two edited books deriving from previous bat research conferences, as well as this one, have been rigorously edited by Tom Kunz and others, with all chapters subjected ...