摘要
龙介虫科(Serpulidae)具钙质栖管,常附着在牡蛎的贝壳上,俗称龙介或石灰虫。除少数种外,均营固着生活。海港设施、船舰、浮标和经济贝类是它们的附着基,是附着生物的主要种类之一。最近我们对中国近海龙介虫科进行了比较系统的研究,在南海采集到的大量标本中,发现了盘管虫属Hydroides的两个新种,现描述如下。
Two new species of Serpulidae herein described were collected from South China Sea.The holotypes are deposited in the Institute of Oceanology,Academia Sinica.The Contribution No.629 from the Institute of Oeeanology,Academia Sinica.descriptions of the two new species are given below.Hydroides centrospina sp.nov.(Fig.1:a-i)Collected from Yulin Harbor,Hainan Island,Guangdong Province,in littoral and sublittoral zones,this new species is associated with Bryozoa,Balanus spp.,Hydroides longispinosa and Hydroides nanhaiensis.Holotype 12mm long by 0.8mm wide in the region of the thorax.Branchial plume of about 20 pinnate filaments.The opercular funnel is whitish;it has 18 fleshy marginal radii with obtuse distal tips.The opercular crown has a circle of 11-14 spines.Each spine is curved outwards distally;it has 4 pairs of lateral processes and 2 to 3 inner,medial aeessory teeth.There is a very long central,smooth spine.The collar setae are of two types:bayonet-shaped setae with 3 to 4 small teeth and a large subapical denticulate zone,and capillaries with minutely serrated margin.The remaining thoracic setae are limbate capillaries;the thoracic uncini have 5-6 teeth.The abdominal uncini are smaller than those of the thorax,with 5-6 teeth.The abdominal setae are trumpet-shaped distally,with about 19 minute teeth in one row.The tube is white,subcylindrical in cross section,with many transverse wrinkles.This new species is similar to Hydroides multispinosa Marenzeller in the form of the collar setae.However,Hydroides centrospina can be distinguished from Hydroides multispinosa.by the long central smooth spine of the opercular crown.Hydroides centrospina also resembles Hydroides longispinosa Imajima in the form of the operculum.However,the bayonet-shaped collar setae have two large conical teeth in the latter,which are absent in the former.Hydroides nanhaiensis sp.nov.(Fig.2:a-g)Material examined.South China Sea,33-72m.The tube is adherent to the shell of oyster,Ostrea imbricata Lamarck.Holotype 11 mm long by 0.7 mm wide in the region of the thorax.Branchial plume of about 20 pinnate filaments.The opercular funnel is fleshy and has 20 marginal radii with distal tips.The opercular crown has a circle of spines.The spines from the circle are curved outwards,and have 6 to 8 pairs lateral processes.All spines also have 5 to 6 accessory teeth arranged in a single row on the inner side.Bayonet-shaped setae with a pair of large conical teeth and a small subapical denticulate zone,which is much larger than in Hydroides multispinosa.Second type of collar setae hair like.Thoracic uncini with 8 teeth.Abdominal uncini with 7 teeth.Hydroides nanhaiensis resembles Hydroides multispinosa and Hydroides longispinosa in the form of the operculum.However,the two later have a conspicuous,long central spine in their crown,which is absent in Hydroides nanhaiensis.
作者
吴宝铃
陈木
Wu Baoling(B.L.Wu);Chen Ma(Institute of Oceanology,Academia Sinica;Fujian Institute of Fisheries Science)
出处
《海洋与湖沼》
1981年第4期354-357,共4页
Oceanologia Et Limnologia Sinica
