卢斯垫刃线虫新种和广东垫刃线虫新种描述(线虫门:垫刃科)  

Description of Tylenchus luci n. sp. and Tylenchus guangdongensis n. sp. (Nematoda: Tylenchidae)

作　　者：谢辉[1] 冯志新[1] 

机构地区：[1]华南农业大学植物线虫研究室,广州510642

出　　处：《华中农业大学学报》2001年第3期223-228,共6页Journal of Huazhong Agricultural University

摘　　要：卢斯垫刃线虫新种 (Tylenchuslucin .sp .)和广东垫刃线虫新种 (Tylenchusguangdongensisn .sp .)分别采集于广东省深圳光明农场的玉米 (Zeamays)和宝安马田菜场的葱 (Alliumfistulosum)根际土壤。前者以角质层无明显环纹、有明显的后阴子宫囊等特征明显区别于相似种小垫刃线虫 (TylenchusminorXie&Feng ,1997)和拟小垫刃线虫 (TylenchusparaminorXie&Feng ,1997) ;以口针长 8.3～ 10 .4μm、后阴子宫囊明显和尾短于或等于肛阴距等特征明显区别于相似种微针垫刃线虫 (TylenchusstylolusXie&Feng ,1995 )。后者以头部环纹明显、后阴子宫囊显著等特征区别于相似种小垫刃线虫 (T .minor)和拟小垫刃线虫 (T .paraminor) ;以尾长于肛阴距 ,交合刺较长等特征区别于相似种卢斯垫刃线虫新种 (T .lucin .sp .)和亚戴维恩垫刃线虫 (T .subdavaineiMukhina,1981)。Tylenchus luci n. sp. and Tylenchus guangdongensis n. sp. from Guangdong, China were described in this paper. T. luci n. sp. was collected from soil around roots of Zea mays . The new species is similar to T. minor Xie & Feng, l997 and T. paraminor Xie & Feng, l997 in body length (4l6～ 523 μm), stylet length (8.3～ 10.4 μm) and more anteriorly located metacorpus (MB=36～50) etc., but it differs from T. minor by cuticle without obvious annulation, obvious post vulval uterine sac, tail shorter than or as long as vulva anus distance (in T. minor , cuticle with obvious annulation, post vulval uterine sac not obvious or absent, tail longer than vulval anus distance); from T. paraminor by cuticle without obvious annulation, post vulval uterine sac obvious, more anterior position of vulva [V=64(61 ～68 )], c=5.8(4.4～ 6.7 ), male known [in T. paraminor , cuticle with obvious annutation, post vulval uterine sac not obvious or absent, V=69(66～74), c=7.4(6.2～8.9 ), male unknown]. Because of its cuticle without obvious annulation, and position of metacarpus and vulva, it has to be compared with T. stylolus Xie & Feng, 1995. It differs from the latter by longer stylet, obvious post vulval uterine sac and shorter tail than or as long as vulua anus distance (in T. stylolus , stylet 6.0～ 6.5 μm long, post vulval uterine sac not obvious or absent, tail longer than vulva anus distance ). T. guangdongensis n. sp. from soil around roots of Allime fistulosum is characterized by body 421～533 μm long, stylet 7.8～ 16.4 μm, spicules 19～21 μm and bursa not obvious or absent. The new species comes close to T. minor,T. paraminor and T. luci n. sp. on the basis of body length and stylet length etc.. It differs from T. minor in having three to four head annulation, obvious post vulval uterine sac, tail often hooked or conspicuously curved, bursa not obvious or absent, spicules longer (in T. minor , head without obvious annulation, post vu

关 键 词：线虫门 垫刃科 垫刃亚科 垫刃属 新种 

分 类 号：Q959.172.5[生物学—动物学]