ABSTRACT

This paper provides the results obtained after study of a small collection of benthic hydroids belonging to the superfamily Plumularioidea McCrady, 1859 collected during four oceanographic surveys, carried out between 2005 and 2008 along the Guinea Current Large Marine Ecosystem (GCLME) off the West African coast. The samples were obtained at nine stations located between 18 and 359 m depth using a bottom trawl (BT) and a Petersen grab. A total of 30 colonies were identified, belonging to 10 species, five genera and three families. The family Aglaopheniidae showed the highest specific richness, with five species, followed by Halopterididae (three species) and Plumulariidae (two species). One new species of the genus Aglaophenia Lamouroux, 1812, A. willasseni sp. nov., is described, and is characterized by the morphology of its lateral nematothecae, provided with two apertures, a feature described here for the first time within this genus. In addition, Halopteris alternata and H. diaphana are reported for the first time from the GCLME region. Our findings of Aglaophenia lophocarpa, Lytocarpia myriophyllum, H. alternata and H. diaphana in Gabon represent the southernmost records of these species in the eastern Atlantic.

Publication LSID: lsid:http://zoobank.org:pub:434AEF7D-457A-4C54-8AA1-A2782BFABEE

摘要

本文提供了在 2005 年至 2008 年间沿西非海岸几内亚洋流大型海洋生态系统 (GCLME) 进行的四次海洋调查期间收集的 1859 年 Plumularioidea McCrady 超家族底栖水螅的一小部分研究结果。 . 样品是使用底拖网 (BT) 和 Petersen 抓斗在位于 18 至 359 m 深度之间的 9 个站点获得的。共鉴定出30个菌落，隶属于10种、5属、3科。Aglaopheniidae 科显示出最高的特定丰富度，有五个物种，其次是 Halopterididae（三个物种）和 Plumulariidae（两个物种）。Aglaophenia Lamouroux属的一个新种，1812，A. willassenisp. nov., 被描述，并以其侧线线虫的形态为特征，具有两个孔，这是该属首次描述的特征。此外，在 GCLME 地区首次报道了Halopteris alternata和H. diaphana。我们在加蓬发现的Aglaophenia lophocarpa、Lytocarpia myriophyllum、H. alternata和H. diaphana代表了这些物种在东大西洋的最南端记录。

出版物 LSID： lsid:http://zoobank.org:pub:434AEF7D-457A-4C54-8AA1-A2782BFABEE