筼筜湖大型海藻群落的几种藻栖端足类的种群动态研究  

Population Dynamics of Several Species of Amphipods in the Macroalgae Canopies in Yudang Lagoon

作　　者：郑新庆[1] 黄凌风[1] 王蕾[1] 谢天宏 洪清波 黄邦钦[1] 

机构地区：[1]厦门大学海洋与环境学院,福建厦门361005 [2]厦门市筼筜湖管理中心,福建厦门361004

出　　处：《厦门大学学报（自然科学版）》2011年第5期928-933,共6页Journal of Xiamen University：Natural Science

基　　金：厦门市科技重点项目(3502Z20102004)

摘　　要：研究了2007年11月至2008年5月期间筼筜湖大型海藻群落几种藻栖端足类的种群动态.结果显示,筼筜湖藻栖的端足类主要有:上野蜾蠃蜚(Corophium uenoi)、日本大螯蜚(Grandidierella japonica)、强壮藻钩虾(A mpithoe vali-da)、平掌拟钩虾(Grammaropsis laevipalmata)和尖额麦秆虫(Caprella panantis).但不同时期、不同藻丛,端足类的种类组成和丰度存在差异.条浒苔(Enteromorpha clathrata)主导的藻丛,主要出现在2007年11月至2008年1月,上野蜾蠃蜚和日本大螯蜚是丰度最高的两种端足类,它们在11月达到丰度的最大值,分别为3.22×104和1.07×104m-2.细基江蓠繁枝变种(Gracilarla tenuistipitatavar.liui)和根枝藻(Rhizocloniumsp.)主导的藻丛分别出现在2008年1—3月和3—5月,上野蜾蠃蜚是其中最优势的端足类,但丰度较低.石莼(Ulva lactuca)主导的藻丛在整个调查期间都有分布,端足类以上野蜾蠃蜚和强壮藻钩虾为主,丰度在3月最高,分别为11.59×104和1.20×104m-2,而后迅速下降.不过,在石莼主导的藻丛,端足类的丰度和大型海藻生物量之间的变化并不同步,而是存在一个月的滞后,据推测,可能是由于大型海藻啃食者(如强壮藻钩虾)的滞后造成的.The population dynamics of several species of amphipods in the macroalgae canopies were studied from November 2007 toMay 2008 in Yundang Lagoon. The results showed that amphipods in the canopies were mainly composed of Corophium uenoi ,Grandidierella japonica ,Ampithoe valida, Grarnrnaropsis laevipalmata and Caprella panantis. However, the species composition and the abundance of amphipods varied in the canopies dominated by different species of macroalgae and in different seasons. In the canopy dominated by Enteromorpha clathrata, which appeared between November 2007 and January 2008,C. uenoi,G, japonica and C. panantis were dominant amphipods,whose abundance was highest in November 2007, up to 3.22× 10^4 , 1.07 × 10^4and 0. 56 × 10^4 m^-2 ,respectively. In the canopies dominated by Gracilarla tenuistipitata var. liui and Rhizocloniurn sp. ,which appeared during January to March 2008 and March to May 2008,respectively,C. uenoi was the most dominant species, but its abundance was relatively low. In the canopy dominated by Ulva lactuca ,C. uenoi,A, valida and G. laevipalmata dominated the amphipod community, with the maximum abundance （11.59 × 10^4 , 1.20 × 10^4 and 0.56 × 10^4 m^-2, respectively） in March, after which, the abundance sharply declined. The temporal pattern of amphipods＇ abundance didn＇t synchronize with that of macroalgal biomass in U. lactuca dominated canopy,with about one month lag for amphipods.

关 键 词：端足类 种群动态 大型海藻 筼筜湖 

分 类 号：Q145.2[生物学—生态学]