The facelinid genus Phyllodesmium (Ehrenberg, 1831) consists of approximately 24 described species that prey upon soft-bodied corals. At least five additional species have yet to be described, making it an interesting genus for testing phylogenetic hypotheses. The genus is extremely morphologically diverse, with many species adapting specifically to a specific host coral. One of the most interesting adaptations found in this genus is the widespread participation in a symbiotic relationship with photosynthetic dinoflagellates in the genus Symbiodinium. Two new species, Phyllodesmium acanthorhinum n. sp. and Phyllodesmium undulatum n. sp., from the Philippine Islands and Japan are described, and a morphological phylogeny is created to include the two new species, as well as three undescribed species. An examination of the Phyllodesmium phylogeny suggests that species with digestive gland branching and zooxanthellae are more derived. Confidence and robustness in this analysis are lacking, however, and further studies using molecular data could add confidence to this conclusion.
叶面纲珊瑚属(Ehrenberg, 1831)由大约24种已知的捕食软体珊瑚的物种组成。至少还有五个物种尚未被描述，这使得它成为一个有趣的属，可以用来测试系统发育假说。该属在形态上极其多样化，许多物种专门适应特定的宿主珊瑚。在这个属中发现的最有趣的适应性之一是在共生属中与光合鞭毛藻的共生关系中广泛参与。本文描述了来自菲律宾群岛和日本的两种新种，棘棘Phyllodesmium acanthorhinum n. sp.和波状Phyllodesmium undulatum n. sp.，并建立了一个包括这两个新种以及三个未被描述的种的形态学系统发育。对千层纲植物系统发育的研究表明，具有消化腺分支和虫黄藻的物种衍生得更多。然而，这一分析缺乏可信度和稳健性，使用分子数据的进一步研究可以增加这一结论的可信度。
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Pub Date : 1962-01-01DOI: 10.4135/9781446247501.n2296
E. P. Chace
{"title":"A living fossil","authors":"E. P. Chace","doi":"10.4135/9781446247501.n2296","DOIUrl":"https://doi.org/10.4135/9781446247501.n2296","url":null,"abstract":"","PeriodicalId":49384,"journal":{"name":"Veliger","volume":"75 1","pages":"162-162"},"PeriodicalIF":0.0,"publicationDate":"1962-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74314555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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