Tolerance to salinity and thermal stress by larvae and adults of the serpulid annelid Ficopomatus enigmaticus
Tolerance to salinity and thermal stress by larvae and adults of the serpulid annelid Ficopomatus enigmaticus
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蛇形环节动物 Ficopomatus enigmaticus 幼虫和成虫对盐度和热应激的耐受性
DOI：
10.1111/ivb.12271
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发表时间：
2019
影响因子：
1.2
通讯作者：
Pernet, Bruno
中科院分区：
文献类型：
--
作者：
Peria, Jessica;Pernet, Bruno
蛇类环节动物Festiomatus enigmaticus是一种广泛分布于亚热带和温带地区的浅水、半咸水栖息地的入侵者，在那里它具有许多破坏性的生态和经济影响。其分布模式表明，温度和盐度在限制其分布方面发挥着重要作用，但由于其他因素往往与这些因素相关，因此很难从这些模式中得出强有力的结论。为了更清楚地确定这些因素的影响，我们检查了幼虫（5天暴露，未进食）和成虫（14天暴露，未进食）对急性热（16-28°C）和盐度（0-35 psu）胁迫的耐受性。在实验室实验中是个谜。幼虫在28°C的最高温度下死亡率较高;成虫存活率不受温度影响。无论是幼虫还是成虫，在暴露于纯淡水（0 psu）时都不能存活，但在3.5-35 psu的盐度范围内存活良好。此外，高盐度并没有减缓管生长的成年人。这些结果表明，盐度胁迫，特别是，不直接限制F的分布。在低盐度的栖息地里F.分布的实验工作。在文献中，这是罕见的，但可能需要确定的非生物或生物因素，限制了这种经常入侵物种的分布。
The serpulid annelidFicopomatus enigmaticusis a widely distributed invader of shallow‐water, brackish habitats in subtropical and temperate regions, where it has numerous damaging ecological and economic effects. Its distributional pattern suggests that temperature and salinity play important roles in limiting its distribution, but because other factors often covary with these, drawing strong conclusions from these patterns is difficult. In an effort to more clearly identify the effects of these factors, we examined tolerance to acute thermal (16–28°C) and salinity (0–35 psu) stress by larvae (5‐day exposure, unfed) and adults (14‐day exposure, unfed) ofF. enigmaticusin the laboratory experiments. Larvae showed higher mortality at the highest temperature tested 28°C; adult survival was unaffected by temperature. Neither larvae nor adults survived exposure to pure freshwater (0 psu), but survived well at salinities ranging 3.5–35 psu. In addition, high salinity did not slow tube growth in adults. These results suggest that salinity stress, in particular, does not directly limit the distribution ofF. enigmaticusto low‐salinity habitats. Experimental work on the distribution ofF. enigmaticusis uncommon in the literature, but is likely needed to identify the abiotic or biotic factors that limit the distribution of this frequently invasive species.