Molinero A González, Cantero A L Peña
Instituto Cavanilles de Biodiversidad y Biología Evolutiva / Departamento de Zoología, Universidad de Valencia, Valencia, Spain, Apdo. Correos 22085, 46071 Valencia, Spain.; Email:
Zootaxa. 2015 Dec 4;4052(4):401-41. doi: 10.11646/zootaxa.4052.4.1.
Oswaldella is the most speciose genus, and one of the most characteristic, of hydrozoans inhabiting the Antarctic benthic marine ecosystem. Its species have relatively many important taxonomic characters allowing for their identification. Some of them, however, are difficult to study properly with a compound microscope. With the aim of improving scientific knowledge concerning species of the genus, a SEM survey of species of Oswaldella was carried out to study key morphological characters. Fourteen out of the 27 known nominal species were considered. The study has revealed unknown important characters, such as the presence of nematothecae associated with the nematophores at the cauline apophyses, and has provided a better understanding of others, such as the shape of the nematotheca associated with the medial infrathecal nematophore. A final general discussion on some of the characters studied and on the bathymetrical and geographical distribution of all known species is also included. Finally, an annotated checklist including all known nominal species has also been assembled.
奥斯瓦尔德水母属是栖息于南极海洋底栖生态系统的水螅虫纲中物种最为丰富且最具特色的属之一。其物种具有较多相对重要的分类学特征，便于识别。然而，其中一些特征使用复式显微镜难以进行恰当研究。为了增进对该属物种的科学认识，对奥斯瓦尔德水母属物种进行了扫描电子显微镜调查，以研究关键形态特征。研究考虑了27个已知命名物种中的14个。该研究揭示了一些未知的重要特征，例如在茎状附属物处与刺丝囊相关的刺丝囊鞘的存在，并对其他一些特征有了更好的理解，比如与鞘内中部刺丝囊相关的刺丝囊鞘的形状。还包括对一些所研究特征以及所有已知物种的深度和地理分布的最终总体讨论。最后，还汇编了一份包含所有已知命名物种的注释清单。
