A new Antarctic <Emphasis Type="Italic">Osthimosia</Emphasis> (Bryozoa,Cheilostomata, Celleporidae) with dimorphic zooids |
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Authors: | Juan López Gappa María G Liuzzi |
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Institution: | (1) Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, ángel Gallardo 470, Buenos Aires, C1405DJR, Argentina |
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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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Keywords: | Osthimosia Cheilostome bryozoan Sexual dimorphism New species Antarctica |
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