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Distribution and breeding cycle ofCyathura polita (Isopoda: Anthuridae) in aJuncus roemerianus marsh of Northern Florida

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Abstract

Cyathura polita was the most common infaunal macroinvertebrate in a north FloridaJuncus roemerianus marsh. Density was 58 and 75/m2 in lower and upper marsh zones, respectively, during a 19 month study period. It was randomly distributed in both marsh zones, but density was greatest 200 m from low water. Population analysis indicated that reproduction occurred in April, young were common in May and these produced young the following April. Males matured first, and there was some evidence for possible protogynous hermaphroditism. Smaller body size, shorter maturation period and a different environment from previously reported populations ofC. polita suggest that we have described a new ecotype located in a distinctively different biotope.

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Authors and Affiliations

  1. Saline Marsh Ecology Project, Florida A&M University, 32307, Tallahassee, Florida

    W. L. Kruczynski & C. B. Subrahmanyam

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  1. W. L. Kruczynski
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  2. C. B. Subrahmanyam
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Kruczynski, W.L., Subrahmanyam, C.B. Distribution and breeding cycle ofCyathura polita (Isopoda: Anthuridae) in aJuncus roemerianus marsh of Northern Florida. Estuaries 1, 93–100 (1978). https://doi.org/10.2307/1351597

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