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首页> 外文期刊>Marine biology >The influence of salinity on box jellyfish (Chironex fleckeri, Cubozoa) statolith elemental chemistry
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The influence of salinity on box jellyfish (Chironex fleckeri, Cubozoa) statolith elemental chemistry

机译：盐度对箱形水母（Chironex fleckeri，Cubozoa）阶梯石元素化学的影响

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Very little is known on the sources and movements of the potentially fatal cubomedusae Chironex fleckeri found around estuary mouths and beaches along tropical coastlines of Australia. Largely anecdotal evidence suggests an alternating season of polyps in protected estuaries during the dry season and medusae emerging from estuaries to feed along beaches with the onset of the monsoonal season. An experiment was conducted on young wild-caught C. fleckeri medusae (caught at Cape York, Australia, in November 2012) to establish how elemental incorporation into statoliths was affected by salinity. A critical salinity test revealed medusae inhabit salinities >20. Medusae were held in salinities of 22, 26, 30 and 34 (n = 5 per treatment) for a duration of 4 days. Laser ablation inductively coupled plasma mass spectrometry was used to analyse experimental areas of statoliths and solution-based ICPMS used for analysing water samples taken from each treatment. Statolith Mg Ca-1 and the partition coefficient (D-Mg) significantly differed among treatments and were the only element Ca-1 ratios to do so. Multi-element Ca-1 signatures could also discriminate among salinity treatments. Partition coefficients revealed D-Mg, D-Sr and D-Li were 2.62 x 10(-6)-0.81 and D-Ba, D-Mn and D-Zn 1.87-431. Experimental and strong correlative evidence suggested that temperature exposure and not salinity was responsible for the significant patterns seen in statolith Sr Ca-1 found by Mooney and Kingsford (2012). Statolith chemistry shows strong promise for determining the movement of medusae through water bodies where there are known thermal and salinity gradients.
机译：在澳大利亚热带海岸线的河口和海滩附近发现的潜在致命的cubomedusae Chironex fleckeri的来源和运动知之甚少。大量轶事证据表明，在干旱季节，受保护河口的息肉交替出现季节，季风季节到来时，美杜莎从河口冒出，沿着海滩觅食。对幼小野生捕捞的美毛梭菌（2012年11月在澳大利亚约克角捕捞）进行了一项实验，以确定元素掺入到石笋中如何受盐度影响。关键盐度测试显示美杜莎栖息地盐度> 20。美杜莎的盐度分别为22、26、30和34（每次处理n = 5），持续4天。激光烧蚀电感耦合等离子体质谱仪用于分析石笋的实验区域，基于溶液的ICPMS用于分析从每种处理中获取的水样。不同处理之间的石笋镁Ca-1和分配系数（D-Mg）显着不同，并且是唯一的元素Ca-1比。 Ca-1多元素签名也可以区分盐度治疗。分配系数显示D-Mg，D-Sr和D-Li为2.62 x 10（-6）-0.81，D-Ba，D-Mn和D-Zn为1.87-431。实验和强有力的相关证据表明，暴露于温度而不是盐度是造成Mooney和Kingsford（2012）在石笋Sr Ca-1中看到的重要模式的原因。石蜡化学显示出强有力的前景，可以确定水母在已知热梯度和盐度梯度的情况下通过水体的运动。

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  • 来源
    《Marine biology》 |2016年第5期|103.1-103.13|共13页
  • 作者

    Mooney Christopher J.; Kingsford Michael J.;

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    James Cook Univ, Coll Marine & Environm Sci, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia;

    James Cook Univ, Coll Marine & Environm Sci, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia;

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