کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5788286 1414233 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
How does flow recruit epibionts onto brachiopod shells? Insights into reciprocal interactions within the symbiotic framework
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
How does flow recruit epibionts onto brachiopod shells? Insights into reciprocal interactions within the symbiotic framework
چکیده انگلیسی
Computational fluid dynamics simulations were performed to examine the passive recruitment of epibionts onto Devonian spiriferide brachiopod host shells. Because many planktonic larvae and spores are propulsion-inefficient swimmers, we determined the areas most prone to settlement in terms of inertial impaction and direct interception, which are characteristic of higher and lower pressure, respectively. Simulations on a unique specimen of Paraspirifer with a geopetal structure of broken brachidia suggest that the larva of Aulopora on the shell was transported and had settled onto the shell through inertial impaction after the host was dead and overturned on the sea floor. In the case of an ideal life posture, the spiriferide models received higher pressure on the shell surfaces at the forward and rearward stagnation areas and lower pressure along the shell margins and the anterior part of the sulcus, regardless of whether the ventral or the dorsal valve was facing upstream. Both sites seem to be available for epibionts by way of direct interception or inertial impaction. Our results indicate that the initial recruitment of most epibionts is accidental and passive, whereas the directions and patterns of epibiont growth suggest a biological response to ambient conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeoworld - Volume 25, Issue 4, December 2016, Pages 675-683
نویسندگان
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