Abstract
Osthimosia chaotica sp. nov., a new celleporid cheilostome bryozoan, is described from samples collected in the South Shetland Isles and the Antarctic Peninsula. It differs from other Antarctic and Subantarctic species of the genus Osthimosia in the absence of vicarious avicularia, the characteristic development of its peristome and the reduced size of the primary orifice of the ovicelled zooids compared to those of autozooids. The occurrence of sexual polymorphism in the Bryozoa is discussed. The new species lives on laminar and filamentous algae.
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Acknowledgments
We are grateful to L. Quartino for the samples of Antarctic algae and to L.Q. and A. Coradeghini for making the phycological specimens stored at the BA herbarium available for study. This research was supported by the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, Argentina).
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López Gappa, J., Liuzzi, M.G. A new Antarctic Osthimosia (Bryozoa, Cheilostomata, Celleporidae) with dimorphic zooids. Polar Biol 32, 47–51 (2009). https://doi.org/10.1007/s00300-008-0501-5
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DOI: https://doi.org/10.1007/s00300-008-0501-5