Role of the Sea Urchin Stomopneustes variolaris (Lamarck, 1816) Pits as a Habitat for Epilithic Macroinvertebrates on a Tropical Intertidal Rocky Shore.
Role of the Sea Urchin Stomopneustes variolaris (Lamarck, 1816) Pits as a Habitat for Epilithic Macroinvertebrates on a Tropical Intertidal Rocky Shore.
复制标题
海胆 Stomopneustes variolaris（拉马克，1816）作为热带潮间带岩石海岸上石器大型无脊椎动物栖息地的作用。
DOI：
10.2108/zs180196
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发表时间：
2019
影响因子：
0.9
通讯作者：
Kringpaka Wangkulangkul
中科院分区：
文献类型：
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作者：
Wannarat Chanket;Kringpaka Wangkulangkul
许多海胆物种在沉积岩中挖掘坑，将原始岩石基质转化为海胆的坑。这些坑不仅被用作它们的家，而且似乎是一个独特的有机体组合的港湾。我们调查了小规模的空间变化，在社区的大型无脊椎动物群落组成的比较发现未改性的岩石基板上，坑内钻岩海胆Stomopneustes variolaris（拉马克，1816年），和未占用的坑，在泰国南部的潮间带岩石海岸。大型无脊椎动物的大小结构进行了比较坑和分析，以调查是否使用的栖息地取决于可用的空间，或海胆和其他大型无脊椎动物之间的生物相互作用。最丰富的移动的动物群，顶壳Trochus radiatus Gmelin，1791年的大小结构进行了分析，以评估它们是否表现出个体发育的变化，在栖息地的使用。虽然在所有的生境类型中都发现了一些物种，但群落组成是不同的。石鳖和帽贝被发现完全在未修改的基板，而相对较大的腹足类居住无人居住的坑，并占用坑窝藏小型甲壳类和腹足类物种。一般来说，在被占领的坑，小型动物比大型动物更丰富，这表明海胆的身体可能作为一个生物结构提供避难所的小型个人。在无人居住的坑体积的所有大型无脊椎动物增加可用空间的增加。在有人居住的坑中没有观察到这一点，因为海胆活动造成的干扰在确定生境利用方面可能更为重要。
Many sea urchin species excavate pits in sedimentary rock, transforming primary rocky substrates into sea urchins' pits. These pits are not only used as their home but seem to harbor a distinct assemblage of organisms. We investigated small-scale spatial variation in community of macroinvertebrates by comparing community composition of epilithic macroinvertebrates between those found on unmodified rocky substrate, inside pits occupied by rock-boring sea urchin Stomopneustes variolaris (Lamarck, 1816), and unoccupied pits, on an intertidal rocky shore in southern Thailand. Size structures of macroinvertebrates were compared between pits and analyses were performed to investigate whether the use of habitat depends on availability of space, or biological interactions between sea urchins and other macroinvertebrates. Size structure of the most abundant mobile fauna, top shells Trochus radiatus Gmelin, 1791, were also analyzed to assess whether they exhibit ontogenetic changes in habitat use. Although a few species were found in all habitat types, community compositions were different. Chitons and limpets were found exclusively on unmodified substrate; whereas relatively large-sized gastropods inhabited unoccupied pits, and occupied pits harbored small-sized crustacean and gastropod species. Generally, in occupied pits, small-sized faunas were more abundant than larger faunas, suggesting that sea urchin's body may function as a biogenic structure providing refugia for small-sized individuals. In unoccupied pits volume of all macroinvertebrates increased as available space increased. This was not observed in occupied pits, where disturbances due to sea urchin's activities may be more important in determining habitat use.