Particle removal rates by the mud shrimp Upogebia pugettensis, its burrow, and a commensal clam:: effects on estuarine phytoplankton abundance
Particle removal rates by the mud shrimp Upogebia pugettensis, its burrow, and a commensal clam:: effects on estuarine phytoplankton abundance
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DOI：
10.3354/meps269223
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发表时间：
2004-01-01
影响因子：
2.5
通讯作者：
Langdon, C
中科院分区：
文献类型：
--
作者：
Griffen, BD;DeWitt, TH;Langdon, C
普氏乌氏潜虾（Upogebia pugettensis）是太平洋西北部、美国海湾和河口的一种数量丰富的潮间带无脊椎动物，与双壳类加州隐蛤（Cryptomya californica）共生。悬浮摄食活动的虾和它的蛤，以及颗粒沉降的洞穴内，代表3个不同的组件，可以去除浮游植物从水中吸入虾洞。这3个组成部分共同组成了我们所谓的“U pugettensis虾洞穴复合体”。在实验室实验中，我们测量了这些组件中的每一个的颗粒去除。结果表明，U. pugettensis本身负责过滤大部分的浮游植物被美国。pugettensis虾洞复合体中浮游植物浓度为0.12mgCl（-1）时，通过C.在浮游植物浓度为0.48 mg C l（-1）时，californica变得越来越重要。颗粒沉降在洞穴和粘附到洞穴壁也可能是负责去除浮游植物的相当大的比例。利用实验室和田间试验的结果，我们建立了一个人口过滤模型来研究美国的潜在影响。美国俄勒冈州纽波特亚基纳河口pugettensis虾洞复合体对浮游植物的影响。我们证明了U。该河口的pugettensis虾-洞穴复合体可能能够每天过滤整个上覆水体。我们还研究了美国和美国之间食品竞争的可能性。pugettensis和其他悬浮饲料中发现的虾栖息地，在这项研究中代表太平洋牡蛎长牡蛎。虾和牡蛎的保留效率的比较表明，它们都能够利用浮游植物大小的颗粒具有类似的效率，因此，可能会竞争食物时，浮游植物丰度是生长限制。
The burrowing shrimp Upogebia pugettensis is an abundant intertidal invertebrate of Pacific Northwest, USA bays and estuaries where it lives commensally with the bivalve Cryptomya californica. Suspension-feeding activities by the shrimp and by its commensal clam, as well as particle settlement within the burrow, represent 3 different components that could remove phytoplankton from water drawn into shrimp burrows. These 3 components together comprise what we call the 'U pugettensis shrimp-burrow complex'. In laboratory experiments, we measured particle removal by each of these components. Our results indicated that U. pugettensis itself is responsible for filtering the majority of phytoplankton removed by the U. pugettensis shrimp-burrow complex at phytoplankton concentrations of 0.12 mg C l(-1), with filtration by C. californica becoming increasingly important at phytoplankton concentrations of 0.48 mg C l(-1). Particle settlement in the burrow and adhesion to the burrow wall may also be responsible for removal of substantial proportions of phytoplankton. Using results from both laboratory and field experiments, we developed a population filtration model to examine the potential impacts of U. pugettensis shrimp-burrow complexes on phytoplankton in the Yaquina estuary, Newport, Oregon, USA. We showed that U. pugettensis shrimp-burrow complexes in this estuary may be capable of daily filtering the entire body of overlying water. We also examined the potential for food competition between U. pugettensis and other suspension feeders that are found in shrimp habitats, represented in this study by the Pacific oyster Crassostrea gigas. Comparison of retention efficiencies of shrimp and oysters indicated that they are both capable of utilizing phytoplankton-sized particles with similar efficiencies and, therefore, may compete for food when phytoplankton abundance is growth-limiting.