Morphology of adult and juvenile instars of Galumna?obvia (Acari,Oribatida, Galumnidae), with?discussion of its taxonomic status

The adult instar of the oribatid mite, Galumna obvia (Berlese, 1914), is redescribed in detail, on the basis of specimens from Finland. The morphology of juvenile instars of G. obvia is described and illustrated for the first time, and compared to that of other species of the family Galumnidae. The position of the insertion of the lamellar seta in adults proved variable in studied European populations, being either on or medial to the lamellar line. Since the genera Galumna and Pergalumna are currently distinguished only by the relative positions of the seta and line, specimens of G. obvia in some populations show an intermediate situation between other studied Galumna species – with lamellar seta on or lateral of lamellar line – and Pergalumna with lamellar seta at a distinct distance medially of lamellar line. A detailed reevaluation of the two genera is needed.     

一个甲烷杆菌新种的描述和系统分类学研究

从清华大学环境科学系处理北京啤酒厂污水的厌氧消化器中分离到一株产甲烷菌菌株Px1。其菌体形态为弯曲杆状 ,淡黄色菌落 ,只利用H2 +CO2 产生甲烷。通过生理、形态、结构特征与 1 6SrDNA序列的同源性分析 ,表明菌株Px1是甲烷杆菌属中一个与其它成员不同的新种 ,命名为弯曲甲烷杆菌 (Methanobacteriumcurvumsp .nov .)。     

寄生于灰仓鼠的一种绦虫新种描述及其生活史的研究

本文描述宁夏海源县山地灰仓鼠小肠寄生的一种裸头科绦虫新种,命名为仓鼠萨氏无摄腺绦虫Aprostatandrya(Sudarikovina)cricetuli sp.n.。用其孕节感染当地的地螨,结果阐明了本新种绦虫的发育史及其中间宿主是当地的长毛腹翼甲螨(Galumna iongipluma)和超肋甲螨(Scheloribateschauhani)。     

黄鼠栉带绦虫和梳状莫斯绦虫的生活史研究

本文首次阐明黄鼠栉帮绦虫和梳状莫斯绦虫的生活史。实验证明这二种绦虫的中间宿主同是曲愎翼甲螨和小型肋甲螨。二者绦虫的成虫、拟囊尾蚴的形态特征有详细的描述与比较。此外,作者简要地讨论了spassky(1951)的锡带属、栉带属和莫斯属等的分类问题。