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    The effect of bot fly larvae on reproduction in white-footed mice, Peromyscus leucopus

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    Timm&Cook.pdf (138.7Kb)
    Issue Date
    1979-01
    Author
    Timm, Robert M.
    Cook, Edwin F.
    Publisher
    American Midland Naturalist
    Type
    Article
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    Abstract
    The effect of bot fly larvae on reproduction in white-footed mice (Peromyscus leucopus noveboracensis) was determined from a sample of 1050 mice that were snap-trapped over a 2-year period in E-central Minnesota. Bot fly larvae (Cuterebra fontinella Clark, 1827) were found parasitizing mice from 16 July through 2 October. During July, August and September, 9.2% of the mice trapped were parasitized by C. fontinella; the mean infestation rate was 1.4 larvae per infested mouse. A single bot fly larva (or scar) was found on 69.1% of the parasitized mice; 23.7% of the mice carried two larvae; 6.2% carried three larvae, and 1.0% had four larvae. More male mice were trapped than females (56.3%–43.7%) and, correspondingly, 55.4% of the bot fly larvae were found on male mice and 44.6% on females. Older mice were more heavily parasitized than younger mice. Parasitized subadult male mice had smaller testes, epididymides and seminal vesicles than nonparasitized subadult males. In adult male mice, the presence of one larva had little effect on the size of the reproductive organs. In adult female mice, parasitism by bot fly larvae did not cause a decrease in the number of embryos, corpora lutea or placental scars. Spleen size increased greatly when larvae were present. The hypothesis is presented that this host-parasite relationship is stable and that the host and parasite have evolved coadaptations and a tolerance for each other.
    URI
    http://hdl.handle.net/1808/5877
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    • Ecology and Evolutionary Biology Scholarly Works [1376]
    • Center for Latin American and Caribbean Studies Scholarly Works [743]
    • Kansas African Studies Center Scholarly Works [273]
    Citation
    Timm, R. M. and E. F. Cook. 1979. The effect of bot fly larvae on reproduction in white-footed mice, Peromyscus leucopus. American Midland Naturalist 101(1):211–217

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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