中国动物传染病学报Issue(5)：51-56,6.
四种胃蝇三期幼虫的扫描电镜观察
OBSERVATIONS OF FOUR KINDS OFGASTEROPHILUS THIRD INSTARS UNDER SCANNING ELECTRON MICROSCOPY
摘要
Abstract
To gather knowledge for the diagnostic characteristics of the third-stage larvae of four equineGasterophilus species, 200 equineGasterophilus samples were collected from Ili region, Xinjiang and examined for their morphological identifi cation under stereo microscopy and scanning electron microscopy. The identifi cation basis forGasterophilus species were their differences of spine rows on every segments, shapes, mouth hooks and stigmal plates. TheseGasterophilus samples were found to contain the third-stage larvae of four equine Gasterophilus species, i.e.G.pecorum,G.nasalis,G.haemorrhoidalis andG.intestinalis. Ultramicroscopic observations revealed that the third-stage larvae ofG.nasalis` had a “separator like” process on its fi rst thorax area with single spines while double rows of spines were arranged on the fi rst thorax area. Additionally, more differences on the superfi cial stripes of mouth hooks and existence of similar “seta like” structures in superfi cial gullies were noted. The dorsal mandibles of the third-stage larvae ofG.pecorum`s expanded and formed the smooth lobes at the apex while the serrate lobes at the apexes were observed in otherGasterophilus species. The differences of morphological characters ofG.haemorrhoidalis andG.pecorum were minor but the parasitic positions and characteristics of spine zones were quite different and considered as identifi cation basis. In conclusion, the major identifi cation points of the third-stage larvae of the most common fourGasterophilus were the superfi cial spine rows, mandible lobes of head and superfi cial gully of mouth hooks.关键词
马胃蝇三期幼虫/体视显微镜/扫描电子显微镜/鉴定Key words
Gasterophilus third-stage larvae/stereo microscope/scanning electron microscope/identifi cation分类
农业科技引用本文复制引用
杨红霞,斯清,吴辉,伊春阳,谢小婉,巴音查汗,郭庆勇..四种胃蝇三期幼虫的扫描电镜观察[J].中国动物传染病学报,2016,(5):51-56,6.基金项目
国家自然基金-新疆联合基金重点项目（U1403283）；国家自然科学基金-新疆联合基金项目（U1503188）；新疆农业大学产学研联合培养研究生项目 （）
