闽南-台湾浅滩渔场多毛类的分布

Distribution of Polychaete in Minnan-Taiwan Shoal Fishing Ground

1987年12月至1988年11月在闽南-台湾浅滩渔场获得83种多毛类，隶属于35科67属。欧努菲虫（Onuphiseremita）、锥唇吻沙蚕（glyceraonomichiensis）、拟特须虫（Parlacydoniaparadoxa）和沿指矾沙蚕（Euniceindica）等出现频率较高。马氏独毛虫（Tharyxmarioni）、奇异稚齿虫（Paraprionospiopinnata）、多齿全刺沙蚕（Nectomeanthesmultignatha）和梯额虫（Scalibregmainflatum）密集地分布于局部水域。闽南-台湾浅滩渔场多毛类年平均生物量为1．13g／m2，年平均密度为25个／m2，均低于台湾海峡北部、东山湾潮下带和大亚湾等水域。闽南-台湾浅滩渔场多毛类表现为低多样性特征。这些分布特征取决于底质类型，该海区沉积颗粒较粗，不利于多毛类繁衍。海流和水团也有重要作用。

Eight-three kinds of species of polychaete were gotten in the Minnan-Taiwan Shoal Fishing Ground from December 1987 to November 1988. They belong to 67 genera,35 fami lies. Onuphis eremita, Glycera onomichiensis, Paralacydonia paradoxa. and Eunice indica are higher frequency of occurrence than other species. Tharyx marioni,Paraprionospio pinnata,Nectoneanthes multignatha and Scalibregma inflatum assembly distribute in local area. The annual average biomass and density of polychaete in Minnan-Taiwan Shoal Fishing Ground are 1. 13g/m2 and 35 ind. /m2 respectively. Both of them are lower than those in the North Taiwan Strait,Dongshan Bay,Daya Bay and western Taiwan Strait. The species diversity in dices of polychaete in Minnan-Taiwan Shoal Fishing Ground are low. These characteristics depend on the types of sediment,which in investigating area is coarse and polychaete does not fit to breed largely. Currents and water masses also play an important role in polychaete distribution.