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首页> 外文期刊>Journal of Parasitology >ELEMENTAL ENRICHMENT OF THE EXOSKELETON IN THREE SPECIES OF TICK (ARACHNIDA: IXODIDAE)
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ELEMENTAL ENRICHMENT OF THE EXOSKELETON IN THREE SPECIES OF TICK (ARACHNIDA: IXODIDAE)

机译：三种蜱（Arachnida：Ixodidae）中的脑骨骼富集外骨骼富集

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摘要

Three species of adult hard tick (Ixodidae) were examined with scanning electron microscopy-energy dispersive X-ray spectroscopy to obtain elemental profiles of their exoskeletons and determine the presence of trace elements. The scutum, tarsal claws, chelicerae, and hypostome were examined on females and males of Amblyomma americanum, Dermacentor variabilis, and Ixodes scapularis. The only trace elements present included chlorine, calcium, and sodium. Chlorine was the most abundant trace element and occurred in all examined regions. The chelicerae generally possessed the highest weight percentages of Cl (up to 11.32 +/- 1.36%) across all 3 species, although high weight percentages of Cl (up to 8.78 +/- 2.77%) were also present in the hypostome teeth of most specimens. All 3 trace elements were present in the hypostome of A. americanum and I. scapularis, but Ca and Na appear to be absent from the teeth of D. variabilis. In general, there were few differences in the elemental profiles of the exoskeletons between the sexes of any species. This study confirms the presence of alkali metals (Na) and alkaline earth metals (Ca) in adult ticks, which are also common in other arachnids; however, the absence of transition metals such as zinc from the exoskeletons of ticks is uncommon and only shared with species of Ricinulei and Opiliones.
机译：用扫描电子显微镜能量色散X射线光谱仪对三种成年硬蜱（硬蜱科）进行了研究，以获得其外骨骼的元素轮廓，并确定微量元素的存在。对美洲弱视、变异性革蜱和肩胛硬蜱的雌雄个体进行了头盖骨、跗爪、龟裂和下口的检查。仅有的微量元素包括氯、钙和钠。氯是最丰富的微量元素，在所有检测区域都存在。在所有3个物种中，龟类通常具有最高的Cl重量百分比（高达11.32+/-1.36%），尽管大多数标本的下口牙齿中也存在较高的Cl重量百分比（高达8.78+/-2.77%）。所有3种微量元素都存在于美洲假丝酵母和肩胛骨假丝酵母的下口中，但变异假丝酵母的牙齿中似乎没有Ca和Na。总的来说，任何物种的外骨骼的元素分布在性别之间几乎没有差异。这项研究证实了成年蜱中存在碱金属（Na）和碱土金属（Ca），这在其他蛛形纲动物中也很常见；然而，蜱的外骨骼中缺少锌等过渡金属的情况并不常见，并且仅与蓖麻属和阿匹利昂属物种共享。

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