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	Morphological and molecular analysis of Ephydatia fluviatilis (Porifera: Spongillida: Spongillidae) from Nanjing, China
通讯作者	Ma, Junye([email protected])
	Zhao, Zhen1,2,3; Li, Chunxiang1,2; Yan, Xianqin4; Yang, Qun1,2,3; Ma, Junye1,2
	2023-12-31
发表期刊	SYSTEMATICS AND BIODIVERSITY
ISSN	1477-2000
卷号	21期号:1页码:13
摘要	We present a comprehensive morphological description of Ephydatia fluviatilis collected in Nanjing for the first time in studies of freshwater sponges in China, based on scanning electron micrography of the sponge meshwork, the megascleres, the gemmules, and the delicate gemmuloscleres, in comparison with relevant data reported worldwide. The morphotype revealed in this study shows a peculiar spicular complement of the skeleton composed of two types of megascleres (the normal oxeas and occasional styles) with abundant tiny, centrally distributed microspinoses, gemmules (ca. 440 & mu;m in diameter) bearing two types of spinose decoration on the shaft (i.e., erect long spines and microspinoses). We report the first complete ITS sequences of the morphotype of E. fluviatilis from China, which, combined with homologous sequences of related taxa from GenBank, are used in a phylogenetic analysis in order to understand the species relationship within Ephydatia and neighbouring taxa. Combining the ITS phylogeny and the gemmulosclere morphotypes, we identify three clades in the paraphyletic genus Ephydatia that are distinguished by different birotule gemmulosclere morphotypes for gemmule-bearing species. Multiple losses of gemmules within endemic taxa, as previously proposed, are confirmed in this study in a phylogenetic context obtained herein. Additionally, genetic similarities are found in some morphologically diverse species, likely indicating recent endemism leading to morphological specialization. Considering the diverse fossil record of Ephydatia from Cenozoic sedimentary strata of wide geographic ranges, we hypothesize that Ephydatia might have a deep root in the Paleogene or earlier and experienced a rapid, Quaternary radiation with emergences of specialized endemic species that lost gemmules under glacial-interglacial paleoenvironment.
关键词	China Ephydatia fluviatilis freshwater sponge gemmule ITS >
DOI	10.1080/14772000.2023.2228865
收录类别	SCI
语种	英语
关键词[WOS]	FRESH-WATER SPONGES ; DEMOSPONGIAE ; PHYLOGENY ; SYSTEMATICS ; RDNA
WOS研究方向	Biodiversity & Conservation ; Life Sciences & Biomedicine - Other Topics
WOS类目	Biodiversity Conservation ; Biology
WOS记录号	WOS:001032809400001
出版者	TAYLOR & FRANCIS LTD
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/42534
专题	中国科学院南京地质古生物研究所
通讯作者	Ma, Junye
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing 210008, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Geol Explorat Technol Inst Jiangsu Prov, Nanjing 210049, Peoples R China
第一作者单位	中国科学院南京地质古生物研究所
通讯作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Zhao, Zhen,Li, Chunxiang,Yan, Xianqin,et al. Morphological and molecular analysis of Ephydatia fluviatilis (Porifera: Spongillida: Spongillidae) from Nanjing, China[J]. SYSTEMATICS AND BIODIVERSITY,2023,21(1):13.
APA	Zhao, Zhen,Li, Chunxiang,Yan, Xianqin,Yang, Qun,&Ma, Junye.(2023).Morphological and molecular analysis of Ephydatia fluviatilis (Porifera: Spongillida: Spongillidae) from Nanjing, China.SYSTEMATICS AND BIODIVERSITY,21(1),13.
MLA	Zhao, Zhen,et al."Morphological and molecular analysis of Ephydatia fluviatilis (Porifera: Spongillida: Spongillidae) from Nanjing, China".SYSTEMATICS AND BIODIVERSITY 21.1(2023):13.

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