Invertebrate survival: Invertebrate survival rates from feeding experiments, conducted at Bodega Marine Laboratory, where food sources (eelgrass (Zostera marina) genotypes) were varied

<p>In this project, we examined the effect of eelgrass genetic and invertebrate species diversity on detrital consumption and animal survival rates in a series of laboratory experiments.</p>

<p>Abstract:<br />
​Seagrass meadows are among the world's most productive ecosystems, and as in many other systems, genetic diversity is correlated with increased production. However, only a small fraction of seagrass production is directly consumed, and instead much of the secondary production is fueled by the detrital food web. Here, we study the roles of plant genetic diversity and grazer species diversity on detrital consumption in California eelgrass Zostera marina meadows. We used three common mesograzers—an amphipod, Ampithoe lacertosa, an isopod, Idotea resecata, and a polychaete, Platynereis bicanaliculata. In this experiment, we raised communities of either Ampithoe lacertosa or communities of all three mesograzers on either no food, eelgrass detritus from a single clone, or eelgrass detritus from 3 of from 6 different clones. Under monospecific grazer assemblages, plant genetic identity but not diversity influenced detritus consumption. However, more realistic, diverse mesoconsumer communities combined with high plant-detrital genotypic diversity resulted in greater consumption and grazer survival.&nbsp;</p>

<p>These data are illustrated in figure 6 of Reynolds et al., 2017 (DOI:<a href=\"http://dx.doi.org/10.1111/oik.04471\" target=\"_blank\">10.1111/oik.04471</a>)</p>

本研究通过一系列室内控制实验，探究鳗草（eelgrass）的遗传多样性与无脊椎动物物种多样性对碎屑摄食率及动物存活率的影响。

摘要：
海草床（seagrass meadows）是全球生产力最高的生态系统之一，与多数其他生态系统类似，其遗传多样性与生产力提升呈显著正相关。然而，仅有极小部分海草生产量会被直接摄食，绝大多数次级生产力均由碎屑食物网（detrital food web）支撑。本研究以加州海域的大叶藻（Zostera marina，俗称鳗草eelgrass）海草床为研究对象，探究植物遗传多样性与牧食者物种多样性对碎屑摄食的调控作用。实验选用3种常见的中型牧食者（mesograzer）：端足类（amphipod）的Ampithoe lacertosa、等足类（isopod）的Idotea resecata以及多毛类（polychaete）的Platynereis bicanaliculata。本实验设置了两种牧食者群落处理：仅包含Ampithoe lacertosa的单物种群落，以及包含全部3种中型牧食者的多物种群落；同时设置3种食物处理：无食物、单一克隆的鳗草碎屑，以及取自6个不同克隆中的3个克隆的鳗草碎屑。实验结果显示：在单物种牧食者群落处理组中，仅植物遗传身份（而非遗传多样性）会对碎屑摄食率产生显著影响；而在更贴近自然的多物种中型消费者群落处理组中，当同时辅以高遗传多样性的鳗草碎屑时，碎屑摄食率与牧食者存活率均显著提升。

本数据集的数据对应Reynolds等人2017年发表的学术论文中的图6（DOI：10.1111/oik.04471）