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Disentangling the spatial distributions of a sponge-dwelling fish and its host sponge

机译：解开海绵居住鱼及其主海绵的空间分布

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摘要

Characterizing spatial patterns of occurrence can lend insight into the ecological processes that determine how individuals are distributed within their environment. When microhabitat specialist fishes and their invertebrate hosts are co-distributed, disentangling their respective spatial patterns is a complex problem. Here, we use point pattern analysis (PPA) to examine the spatial distributions of a host sponge Aplysina fistularis and its resident goby Elacatinus lori from a fully censused plot at Curlew Cay, Belize (16 degrees 4723N 88 degrees 0433), sampled in summer 2011. The PPA approach allowed us to disentangle the spatial distribution of sponges and the spatial distribution of goby-occupied sponges. After controlling for depth and the distribution of hard substrate, we found that the sponges were clustered at small scales ( 4.5m) within the censused area. After controlling for sponge clustering, we found that goby-occupied sponges were neither clustered nor over-dispersed within the censused area. Two fish age classes, recent settlers and established residents, were closely associated at small scales ( 3.5m). We discuss alternative ecological and behavioral hypotheses for the cause of these spatial patterns. Despite the limited application of PPA in marine ecology, we demonstrate the potential use of this statistical analysis in disentangling the spatial structure of co-distributed populations and providing preliminary insights into the processes that may account for their respective distributions.
机译：表征出现的空间模式可以介绍了解确定个人如何在其环境中分配的生态过程。当微藏宝藏宝专业的鱼类和他们的无脊椎动物宿主共同分配时，分解它们各自的空间模式是一个复杂的问题。在这里，我们使用点模式分析（PPA）来检查Host Sponge Aplysina Fistularis及其常规Goby的空间分布以及来自Curlew Cay的完全裁员地块，伯利兹（16度4723N 88度0433），在2011年夏季进行采样。PPA方法使我们能够解开海绵的空间分布和狼占领海绵的空间分布。在控制深度和硬质基质的分布后，我们发现海绵在持抗区内的小鳞片（<4.5米）聚集。在控制海绵聚类之后，我们发现凝血的海绵既不是聚集的也不会在持斯杜姆区内过分分散。两种鱼龄阶级，最近定居者和已建立的居民，密切关联小鳞片（<3.5米）。我们讨论这些空间模式的原因的替代生态和行为假设。尽管PPA在海洋生态学中应用有限，但我们展示了这种统计分析的潜在利用在解开共同分布群体的空间结构中，并为其各自分布的过程提供初步见解。

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  • 来源
    《Marine biology》 |2019年第5期|66.1-66.8|共8页
  • 作者

    Lesneski K. C.; DAloia C. C.; Fortin M. -J.; Buston P. M.;

  • 作者单位

    Boston Univ Dept Biol 5 Cummington Mall Boston MA 02215 USA|Boston Univ Marine Program 5 Cummington Mall Boston MA 02215 USA;

    Univ New Brunswick Dept Biol Sci 100 Tucker Pk Rd St John NB E2L 4L5 Canada;

    Univ Toronto Dept Ecol & Evolutionary Biol 25 Willcocks St Toronto ON M5S 3B2 Canada;

    Boston Univ Dept Biol 5 Cummington Mall Boston MA 02215 USA|Boston Univ Marine Program 5 Cummington Mall Boston MA 02215 USA;

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