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

机译：解开居住在海绵中的鱼及其宿主海绵的空间分布

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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：对事件发生的空间模式进行特征描述可以深入了解确定个体如何在其环境中分布的生态过程。当微生境专业鱼类及其无脊椎动物寄主共同分布时，分开它们各自的空间格局是一个复杂的问题。在这里，我们使用点模式分析（PPA）从2011年夏季在伯利兹Curlew Cay（16度4723N 88度0433）进行全面普查的地块上，检查了一个寄主海绵Aplysina fistularis及其常住虾虎鱼Elacatinus lori的空间分布PPA方法使我们可以解开海绵的空间分布和虾虎鱼占用的海绵的空间分布。在控制深度和硬质基质的分布之后，我们发现海绵在被调查区域内以小比例（<4.5m）聚集。在控制海绵聚集之后，我们发现虾虎鱼占据的海绵既没有聚集也没有过度散布在被调查的区域内。在小规模（<3.5m）下，两个鱼类年龄类别，即最近的定居者和已建立的居民，密切相关。我们讨论了造成这些空间格局的另一种生态和行为假设。尽管PPA在海洋生态学中的应用有限，但我们证明了这种统计分析在分解共同分布种群的空间结构以及对可能解释其各自分布的过程提供初步见解方面的潜在用途。

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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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