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Worldwide revision of the genus Fraseroscyphus Boero and Bouillon, 1993 (Cnidaria: Hydrozoa): an integrative approach to establish new generic diagnoses
Song, Xikun1,2,3,4; Xiao, Zefeng5; Gravili, Cinzia6; Ruthensteiner, Bernhard7; Mackenzie, Melanie8; Wang, Shaoqing1,2; Chen, Jinjing9; Yu, Nan9; Wang, Jianjun4
2016-09-14
Source PublicationZOOTAXA
Volume4168Issue:1Pages:1-37
SubtypeArticle
AbstractThe morphological character of the hydrocladium and gonotheca origin from within the hydrothecal cavity has rarely been applied for generic diagnoses in hydrozoans. Its taxonomic value has been controversial for more than a century. The genus Fraseroscyphus Boero and Bouillon, 1993 (Hydrozoa: Sertulariidae) is a relatively recently debated case and it has been distinguished from Symplectoscyphus Marktanner-Turneretscher, 1890 based on this character. A review of this character in all published nominal species of the family Sertulariidae reveals that its occurrence is inconsistent at the genus level. However, phylogenetic analyses based on mitochondrial (16S) and nuclear (18S, 28S) genes support the position of Fraseroscyphus as a genus within the family Symplectoscyphidae Maronna et al., 2016. Comparisons of 16 morphological characters of 10 related species support the distinction of Fraseroscyphus from Antarctoscyphus and Symplectoscyphus by other characters in addition to the hydrocladial and gonothecal origin character. These new characters include the rarely-branched hydrocaulus, the absence of an apophysis, and the absence of an axillary hydrotheca. Furthermore, a revision based on the morphological character complex mentioned above using type and topotypic material, demonstrated that Sertularella sinuosa Fraser, 1948 (type species of Fraseroscyphus) and Symplectoscyphus huanghaiensis Tang & Huang, 1986 are junior synonyms of F. hozawai (Stechow, 1931) comb. nov. The assignment of Sertularella irregularis Trebil-cock, 1928 and Sertularella macrogona Trebilcock, 1928 to Fraseroscyphus is also supported. In addition, sequence polymorphism of mitochondrial genes even within a single hydroid fragment was detected by the molecular cloning method, and is probably in part attributable to errors introduced by PCR, mitochondrial heteroplasmy and/or nuclear mitochondrial DNA (NUMTs). The adoption of the cloning method may be crucial to improve the sequence accuracy for some colonial hydrozoans.
KeywordSertulariidae Molecular Phylogenetics Sequence Polymorphism Biogeography Transoceanic Distribution
DOI10.11646/zootaxa.4168.1.1
Indexed BySCI
Language英语
WOS IDWOS:000383189900001
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/135842
Collection海洋生物分类与系统演化实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Dept Marine Organism Taxon & Phylogeny, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Marine Biol Museum, 7 Nanhai Rd, Qingdao 266071, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.State Ocean Adm, Inst Oceanog 3, 178 Daxue Rd, Xiamen 361005, Peoples R China
5.Liaocheng Univ, Sch Life Sci, 1 Hunan Rd, Liaocheng 252059, Peoples R China
6.Univ Salento, Dipartimento Sci & Tecnol Biol & Ambientali, I-73100 Lecce, Italy
7.Bavarian State Collect Zool, Muenchhausenstr 21, D-81247 Munich, Germany
8.Museum Victoria, Marine Invertebrates Sci Dept, GPO Box 666, Melbourne, Vic 3001, Australia
9.Ocean Univ China, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Song, Xikun,Xiao, Zefeng,Gravili, Cinzia,et al. Worldwide revision of the genus Fraseroscyphus Boero and Bouillon, 1993 (Cnidaria: Hydrozoa): an integrative approach to establish new generic diagnoses[J]. ZOOTAXA,2016,4168(1):1-37.
APA Song, Xikun.,Xiao, Zefeng.,Gravili, Cinzia.,Ruthensteiner, Bernhard.,Mackenzie, Melanie.,...&Wang, Jianjun.(2016).Worldwide revision of the genus Fraseroscyphus Boero and Bouillon, 1993 (Cnidaria: Hydrozoa): an integrative approach to establish new generic diagnoses.ZOOTAXA,4168(1),1-37.
MLA Song, Xikun,et al."Worldwide revision of the genus Fraseroscyphus Boero and Bouillon, 1993 (Cnidaria: Hydrozoa): an integrative approach to establish new generic diagnoses".ZOOTAXA 4168.1(2016):1-37.
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