Abstract Epizoic diatom communities were studied on four turtle species (Chelonia mydas L., Eretmochelys imbricata L., Lepidochelys olivacea Eschscholtz and Dermochelys coriacea Vandelli) from the Eastern Caribbean, the Equatorial West Atlantic and the South Pacific. In the present study, we focused on one taxon of Navicula Bory de Saint-Vincent, described here as a new taxon, which was found on seven individuals of Dermochelys coriacea and one individual of Lepidochelys olivacea in French Guiana. The new Navicula taxon was found neither on Chelonia mydas (83 specimens examined) nor Eretmochelys imbricata (13 specimens examined). Furthermore, the new taxon appears to have a restricted biogeography, as so far it has only been reported from French Guiana. A species of Navicula is reported for the first time as a supposedly exclusive epizoic taxon. Navicula dermochelycola sp. nov. is characterized in detail; its ultrastructure is described and compared with other members of Navicula.

中文翻译：

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Navicula dermochelycola sp. 11 月，大概是来自法属圭亚那的海龟 Dermochelys coriacea 和 Lepidochelys olivacea 上的一种特殊的表生硅藻

摘要 研究了来自东加勒比、赤道西大西洋和​​南太平洋的四种龟类（Chelonia mydas L.、Eretmochelys imbricata L.、Lepidochelys olivacea Eschscholtz 和 Dermochelys coriacea Vandelli）的表生硅藻群落。在本研究中，我们专注于 Navicula Bory de Saint-Vincent 的一个分类群，这里描述为一个新分类群，它在法属圭亚那的 7 个 Dermochelys coriacea 个体和一个 Lepidochelys olivacea 个体上发现。在 Chelonia mydas（检查的 83 个标本）和 Eretmochelys imbricata（检查的 13 个标本）上都没有发现新的 Navicula 分类群。此外，新分类群似乎具有受限制的生物地理学，迄今为止仅在法属圭亚那报道过。Navicula 的一个物种首次被报道为一种据称是独特的表生分类群。Navicula dermochelycola sp. 十一月 具有详细的特征；它的超微结构被描述并与舟形的其他成员进行了比较。