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First published online May 24, 2004
Journal of Experimental Biology 207, 2351-2360 (2004)
Published by The Company of Biologists 2004
doi: 10.1242/jeb.01020

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Morphological plasticity varies with duration of infection: evidence from lactating and virgin wild-derived house mice (Mus musculus) infected with an intestinal parasite (Heligmosomoides polygyrus; Nematoda)

Deborah M. Kristan^* and Kimberly A. Hammond

Department of Biology, University of California, Riverside, CA 92521, USA

View larger version (14K): [in a new window]   Fig. 1. Average whole body mass and body composition for virgin and lactating mice that were either unparasitized (0 infection duration) or that were parasitized for 30-60 or 90-120 days. Error bars are +1 S.E.M.

View larger version (18K): [in a new window]   Fig. 2. Fat mass of organs [liver and others combined (heart, lung, kidney, spleen, stomach, large intestine, cecum)] and carcass for virgin and lactating mice that were either unparasitized (0 infection duration) or that were parasitized for 30-60 or 90-120 days. Error bars are +1 S.E.M.

View larger version (16K): [in a new window]   Fig. 3. Organ dry masses for virgin and lactating mice that were either unparasitized (0 infection duration) or that were parasitized for 30-60 or 90-120 days. Error bars are +1 S.E.M.

View larger version (18K): [in a new window]   Fig. 4. Small intestine length (shown by diamonds) and dry mass (shown by bars) subdivided by `serosal' and `mucosal' components for virgin and lactating mice that were either unparasitized (0 infection duration) or that were parasitized for 30-60 or 90-120 days. Error bars are +1 S.E.M.

View larger version (19K): [in a new window]   Fig. 5. Small intestine dry mass subdivided by `serosal' and `mucosal' components for three regions (proximal, mid, distal) for virgin and lactating mice that were either unparasitized (0 infection duration) or that were parasitized for 30-60 or 90-120 days. Error bars are +1 S.E.M.

View larger version (15K): [in a new window]   Fig. 6. Total food intake (whole bar) and digestible food intake (black portion of bar) for virgin and lactating mice that were either unparasitized (0 infection duration) or that were parasitized for 30-60 or 90-120 days. Percent digestibility is shown above each bar. Error bars are +1 S.E.M.

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