昆虫学报 ›› 2016, Vol. 59 ›› Issue (1): 85-92.doi: 10.16380/j.kcxb.2016.01.010

• 研究论文 • 上一篇    下一篇

新疆四种优势种革蜱超微结构观察

吴辉1, 斯清2, 朱玉涛1, 宋瑞其1, 巴音查汗1,*   

  1. (1. 新疆农业大学动物医学学院, 乌鲁木齐 830052; 2. 昭苏县察汗乌松乡畜牧兽医站, 新疆昭苏 835604)
  • 出版日期:2016-01-20 发布日期:2016-01-20
  • 作者简介:吴辉, 男, 1991年11月生, 安徽颍上县人, 硕士研究生, 研究方向为预防兽医学, E-mail: 578817404@qq.com

Observation on the ultrastructure of four dominant Dermacentor species (Acari: Ixodidae) in Xinjiang, northwestern China

WU Hui 1, SI Qing2, ZHU Yu-Tao1, SONG Rui-Qi1, BAYIN Chahan1,*   

  1. (1. College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; 2. Animal Husbandry and Veterinary Station of Zhaosu County, Zhaosu, Xinjiang 835604, China)
  • Online:2016-01-20 Published:2016-01-20

摘要: 【目的】明确新疆优势种革蜱超微结构鉴别特征,以期准确鉴别媒介蜱。【方法】本研究以新疆疫区4种优势种革蜱——边缘革蜱 D. marginatus、草原革蜱 D. nuttalli、森林革蜱 D. silvarum和银盾革蜱 D. niveus为实验材料,在体视显微镜下观察并鉴定物种后,进行扫描电镜观察。【结果】银盾革蜱、森林革蜱、草原革蜱和边缘革蜱体躯大小、盾板珐琅彩存在差异;银盾革蜱和边缘革蜱的肢节Ⅳ(股节、胫节和后跗节)腹面都具有3个齿状突,而草原革蜱的3个齿状突位于胫节和后跗节,森林革蜱仅后跗节有3个齿状突。此外,这4种优势种革蜱须肢腹面内侧缘刚毛排列、爪垫长度与爪长度之间的比例等特征也存在明显差异。【结论】银盾革蜱、森林革蜱、草原革蜱及边缘革蜱以肢节Ⅳ腹面齿状突和气门板为鉴别特征,结合须肢腹面内侧缘刚毛排列、爪垫长度与爪长的比例等特征,可快速准确鉴别,对新疆地区蜱传疾病综合防控具有应用意义。

关键词: 革蜱, 优势种, 超微结构, 形态学, 扫描电子显微镜, 新疆

Abstract: 【Aim】 To determine the ultrastructural characteristics for diagnosis of dominant Dermacentor species, tick-borne vectors, in Xinjiang, northwestern China. 【Methods】 The ultrastructure and morphology of four dominant Dermacentor species, i.e.D. niveus, D. silvarum, D. nuttalli and D. marginatus, were observed by scanning electronic microscope on the basis of observation and indentification with stereo microscope. 【Results】 Differences existed in the idiosomal size and the enamel color of scutum among the four species. There are three odontoid processes on the ventral podomer Ⅳ (femur, tibia and metatarsus) of D. niveus and D. marginatus, and the odontoid processes are present on both tibia and metatarsus of D. nuttalli, but only present on the metatarsus of D. silvarum. Notable differences were also found in the seta arrangement of ventral palpus’s medial margin, the length of claws, and the claw-pulvillus length ratios of the four dominant Dermacentor species. 【Conclusion】 The number and location of the odontoid processes on ventral podomer Ⅳ and the morphology of spiracular plate are diagnostic characteristics for the four Dermacentor species, and a rapid species identification could be made by combining these characteristics with the seta arrangement of ventral palpus, the claw length and the claw-pulvillus length ratio.

Key words: Dermacentor, dominant species, ultrastructure, morphology, scanning electronic microscope, Xinjiang