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    Life cycle information from a Wisconsin poplation of Porcellio spinicoris, the dark-headed isopod

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    Date
    1991-10-01
    Author
    Jass, Joan P
    Zandi, K
    Klausineier, Barbara
    Metadata
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    Abstract
    Detailed life cycle information is lacking for Wisconsin terrestrial isopod crustaceans. We measured head-widths of a local population of Porcellio spinicornis and compiled data on size frequencies, sex ratio and gravidity. Females were larger and formed a majority of the population. Gravidity showed a definite seasonal pattern; percentages of gravid females ranged from zero in March and April to near 80% in late May and early June.
    Subject
    Porcellio spinicoris
    dark-headed isopod
    Permanent Link
    http://digital.library.wisc.edu/1793/90321
    Type
    article
    Citation
    Jass, J., K. Zandi, and B. Klausmeier. 1991. Life cycle information from a Wisconsin poplation of Porcellio spinicoris, the dark-headed isopod. Field Station Bulletin 24(2): 21-26.
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