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首页> 外文期刊>Marine biology >Effects of temperature, size, and food on the growth of Membranipora membranacea in laboratory and field studies
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Effects of temperature, size, and food on the growth of Membranipora membranacea in laboratory and field studies

机译：在实验室和田间研究中，温度，大小和食物对膜状膜细菌生长的影响

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摘要

In the rocky subtidal ecosystem of the western North Atlantic outbreaks of the introduced epiphytic bryozoan Membranipora membranacea cause defoliation of kelp beds and facilitate the introduction of other non-native benthic species. We quantified size- and temperature-dependent growth rates of M. membranacea colonies in the field and the laboratory for durations of 8-23 days. Also, we examined the interaction between food abundance and temperature on growth rates of newly settled colonies in the laboratory. Growth rates were positively related to temperature and increased exponentially with size of colonies over the ranges examined (5.7-16.2℃ and 0.5-192 mm, respectively), and were significantly higher in the field than in the laboratory. There was an interactive effect between food and temperature on the size and growth rates of colonies, with the most pronounced effects of food limitation on colonies grown at the warmest temperatures, and no effect of food on colonies grown at the coldest temperatures. Quantifying the growth rates of introduced species is essential to understanding their population dynamics, particularly when outbreaks can have severe impacts on the native community.
机译：在北大西洋西部的潮汐岩石生态系统中，引入的附生苔藓虫Membranipora membranacea暴发导致海藻床脱叶并促进其他非原生底栖物种的引入。我们对野外分枝杆菌菌落的大小和温度依赖性生长速率进行了定量，在田间和实验室中持续8-23天。此外，我们在实验室中检查了食物丰度和温度之间的相互作用对新定居菌落的生长速率的影响。在所研究的范围内（分别为5.7-16.2℃和0.5-192mm），生长速率与温度呈正相关，并随菌落的大小呈指数增加，并且在田间比实验室显着更高。食物和温度之间的相互作用对菌落的大小和生长速率具有交互作用，其中食物限制对最温暖温度下生长的菌落的影响最为明显，而食物对最冷温度下生长的菌落没有影响。量化引进物种的增长率对于了解其种群动态至关重要，特别是在疫情暴发可能对当地社区造成严重影响时。

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  • 来源
    《Marine biology》 |2009年第11期|2267-2276|共10页
  • 作者

    Megan I. Saunders; Anna Metaxas;

  • 作者单位

    Department of Oceanography, Dalhousie University, Halifax, NS B3H 4J1, Canada;

    Department of Oceanography, Dalhousie University, Halifax, NS B3H 4J1, Canada;

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