Mobile epifauna on subtidal brown seaweeds in northeastern New Zealand
Mobile epifauna on subtidal brown seaweeds in northeastern New Zealand
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新西兰东北部潮下棕色海藻上的移动表层动物群
DOI：
10.3354/meps115271
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
R. Cole
中科院分区：
文献类型：
--
作者：
Rb Taylor;R. Cole
本文研究了新西兰东北部10种潮下带褐藻中移动的直径大于1 mm的表生动物的分布和丰度。Cammarid端足类和等足类是捕获的最丰富的动物，而不同的腹足类也存在较低密度的F~ nelly结构的海藻，如Carpophyllum plumosum var.与粗结构海藻相比，capillifolium和Cystophora retroflexa倾向于支持更多的动物（高达2000 ind./100 g藻类湿重）。表生动物区系的比较。不同叶状体宽度的plurnosum生长形式表明，这种模式是由于植物的形态，而不是其内部组成的差异。有一个趋势，等足类与管状的身体形状，生活在藻类的窄叶，背腹扁平的等足类生活在藻类的宽叶。大多数海藻种的表生动物组合在多元空间中彼此不同，但单个表生动物类群的寄主植物特异性一般不强，大多数表生动物类群出现在1个以上的藻种上。这表明，大多数表生动物与其寄主植物的关系较弱。Ecklonia r a d ~ a a表层动物密度在6 m深度达到最大值，随深度的增加而下降.
This paper examines the distribution and abundance of mobile epifauna > 1 mm inhabiting 10 species of subtidal brown seaweeds (Phaeophyceae) in northeastern New Zealand. Cammarid amphipods and isopods were the most abundant animals captured, while a diverse group of gastropods was also present at lower densities F~nely structured seaweeds such as Carpophyllum plumosum var. capillifolium and Cystophora retroflexa tended to support far more animals (up to 2000 ind. per 100 g algal wet wt) than did coarsely structured seaweeds. Comparison of epifaunas among C. plurnosum growth forms of varying thallus width indicated that this pattern was due to the morphology of the plants rather than differences in their internal composition. There was a trend for isopods with tubular body shapes to live on algal species with narrow fronds, and for dorso-ventrally flattened isopods to live on algae with wide fronds. Most of the seaweed species held epifaunal assemblages that were distinct from one another in multivariate space, but the individual epifaunal taxa were generally not strongly host-plant specific, w ~ t h most occurring on more than 1 algal species. I t is suggested that most of the epifauna have a weak relationship with their host plant. Epifaunal dens~ties on Ecklonia r a d ~ a t a peaked at 6 m depth, and declined with increasing depth.