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首页> 外文期刊>Journal of Molluscan Studies >Recruitment preferences of non-native mussels: interaction between marine invasions and land-use changes
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Recruitment preferences of non-native mussels: interaction between marine invasions and land-use changes

机译：非本地贻贝的招聘偏好：海洋入侵与土地利用变化之间的相互作用

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摘要

Preferential patterns of settlement of marine invertebrate larvae may significantly affect the expansion of introduced populations when coupled with anthropogenic changes to available substrates in marine environments. In the near-shore marine environments of the southeastern USA the addition of hard substrates into primarily salt marsh habitats may provide necessary settlement sites for recently introduced marine invertebrates such as the Asian green mussel, Perna viridis, and the South American charru mussel, Mytella charruana. Preliminary studies in Florida suggest that M. charruana adults are predominantly found on man-made substrates, especially docks. The present study investigated whether P. viridis and M. charruana preferentially settle on substrates commonly used in man-made structures such as plexiglass, wood and rock, or on natural substrates like the shells of oyster (Crassostrea virginica), green mussels or charru mussels. Frames containing a mixture of these six substrates were deployed at two locations in Florida and retrieved after 1, 2 and 3 months. Over 1-month deployments, both species preferentially recruited to natural substrates. While this pattern was repeated on substrates in the field for 2 months in M. charruana, there were no differences in P. viridis spat density among any of the substrates in the field for 2 or 3 months. These results suggest that man-made hard substrates will likely not affect expansion of these two species by providing preferred settlement sites. Man-made substrates may still, however, provide better locations for survival.
机译：当与人为改变海洋环境中可利用的底物相结合时，海洋无脊椎动物幼虫的优先沉积方式可能会显着影响引进种群的扩展。在美国东南部的近岸海洋环境中，在主要的盐沼栖息地中添加硬质底物可能为最近引入的海洋无脊椎动物（例如亚洲绿贻贝，Perna viridis和南美夏鲁贻贝，Mytella charruana）提供必要的定居点。 。佛罗里达州的初步研究表明，夏鲁亚热带成虫主要存在于人造基质上，尤其是在码头上。本研究调查了绿色假单胞菌和沙鲁氏菌是否优先沉积在人造结构（如有机玻璃，木材和岩石）常用的基质上，还是优先沉积在牡蛎壳（Crassostrea virginica），青口贻贝或沙鲁贻贝等天然基质上。将包含这六种底物混合物的框架部署在佛罗里达州的两个位置，并在1、2和3个月后取回。经过1个月的部署，这两个物种都优先被招募到自然界。尽管此模式在野菜中在基质上重复了2个月，但在野外2个月或3个月中，任何一种基质上的绿色假单胞菌喷口密度均没有差异。这些结果表明，人造的硬质底物可能不会通过提供首选的沉降点来影响这两个物种的扩张。但是，人造基材仍可以提供更好的生存位置。

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    《Journal of Molluscan Studies》 |2010年第4期|p.333-339|共7页
  • 作者

    Matthew R. Gilg; Eric A. Hoffman; Kimberly R. Schneider; Josiah Ryabinov; Christine El-Khoury;

  • 作者单位

    Department of Biology, University of North Florida, Jacksonville, FL 32224, USA;

    Department of Biology, University of Central Florida, Orlando, FL 32816, USA;

    Department of Biology, University of Central Florida, Orlando, FL 32816, USA;

    Department of Biology, University of North Florida, Jacksonville, FL 32224, USA;

    Department of Biology, University of North Florida, Jacksonville, FL 32224, USA;

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