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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Oyster reef community interactions: The effect of resident fauna on oyster (Crassostrea spp.) larval recruitment
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Oyster reef community interactions: The effect of resident fauna on oyster (Crassostrea spp.) larval recruitment

机译：牡蛎礁群落相互作用：常驻动物群对牡蛎（Crassostrea spp。）幼体募集的影响

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摘要

During their transition from the pelagic larval form to the benthic adult form, larvae are likely to encounter a diverse assemblage of resident invertebrates on oyster reefs. Fouling epifauna are generally believed to reduce the settlement of interspecific larvae through competitive exclusion and predation. Studies of these interactions, however, often utilize artificial settlement panels, which can exhibit different recruitment patterns to those observed on natural substrates. Native (Crassostrea virginica) and non-native (Crassostrea ariakensis) oyster larvae were exposed to reef-collected shells, each supporting a single species of reef-associated fauna, over a series of laboratory microcosm studies. The presence of adult bryozoans (Membranipora tenuis) had little effect on rates of larval settlement or mortality. The boring sponge (Cliona sp.) significantly decreased oyster larval settlement, and generally increased oyster mortality. Barnacles (Balanus improvisus) typically facilitated settlement. Barnacle molds and empty barnacle tests, intended to mimic the surface area and rugosity of live barnacles, did not significantly affect settlement. In some trials, adult barnacle bathwater enhanced settlement of oyster larvae, highlighting the importance of waterborne cues. Barnacle bathwaters, adult clam worm (Neanthes succinea) bathwaters and bathwaters created using adult oysters were all found to cause oyster larval mortality. Predation by clam worms, which were observed at very high densities on field-collected oyster shells, caused significant oyster larval mortality in these experiments. The combined effects of positive and negative interactions between oyster larvae and resident invertebrate reef fauna require enumeration under field conditions. The results from this study highlight the need for a more thorough understanding of settlement behavior and mortality sources of recruiting oyster larvae.
机译：在它们从上层幼虫转变为底栖成虫的过程中，幼虫很可能会在牡蛎礁上遇到各种各样的常驻无脊椎动物。通常认为结垢表生动物通过竞争性排斥和捕食减少种间幼虫的沉降。但是，对这些相互作用的研究通常使用人工沉降面板，该面板可以表现出与天然底物上观察到的不同的募集模式。在一系列实验室缩影研究中，将本地（Crassostrea virginica）和非本地（Crassostrea ariakensis）牡蛎幼虫暴露于珊瑚礁收集的贝壳，每个贝壳支撑与珊瑚礁相关的动物的单一物种。成年的苔藓虫（Membranipora tenuis）的存在对幼虫的沉降或死亡率几乎没有影响。无聊的海绵（Cliona sp。）显着降低了牡蛎幼体的沉降，并通常增加了牡蛎死亡率。藤壶（Balanus improvisus）通常有助于定居。旨在模拟活藤壶的表面积和皱纹的藤壶霉菌和空藤壶测试并未显着影响沉降。在一些试验中，成年藤壶沐浴水增强了牡蛎幼虫的沉降，突出了水生线索的重要性。发现藤壶浴，成年蛤（Neanthes succinea）浴和使用成年牡蛎创造的浴水均会导致牡蛎幼虫死亡。在这些实验中，以高密度在现场采集的牡蛎壳上观察到的蛤捕食引起了明显的牡蛎幼虫死亡率。牡蛎幼虫和常住无脊椎动物礁动物群之间正负相互作用的综合作用需要在田间条件下进行枚举。这项研究的结果表明，需要更全面地了解招募牡蛎幼体的定居行为和死亡率来源。

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    Brian B. Barnes; Mark W. Luckenbach; Peter R. Kingsley-Smith;

  • 作者单位

    Virginia Institute of Marine Science, College of William and Mary, P.O. Box 1346, Gloucester Point, VA 23062-1346, United States College of Marine Science, University of South Florida, 140 7th Ave S, St. Petersburg, FL 33701, United States;

    rnVirginia Institute of Marine Science, College of William and Mary, P.O. Box 1346, Gloucester Point, VA 23062-1346, United States;

    rnVirginia Institute of Marine Science, College of William and Mary, P.O. Box 1346, Gloucester Point, VA 23062-1346, United States Marine Resources Research Institute, South Carolina Department of Natural Resources, 217 Fort Johnson Road, P.O. Box 12559, Charleston, SC 29422, United States;

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  • 正文语种 eng
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  • 关键词

    chemical cue; crassostrea; larvae; recruitment; settlement;

    机译：化学提示十字花科幼虫招聘;沉降;

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