Cho M R, Robbins R T
J Nematol. 1990 Apr;22(2):162-9.
Stylet ultrastructure of five Xiphinema, four Longidorus, and three Californidorus species was compared by scanning electron microscopy. Morphological differences were seen in the odontophores and odontostyle bases between the genera and some of the species. All Xiphinema studied had well-developed odontophore flanges; the Longidorus species lacked flanges, except for weakly developed ones in L. diadecturus; and none of the Californidorus had flanges. Three sinuses were present in the odontophores of all species. The sinuses varied in length depending upon species. In Xiphinema and Californidorus the odontostyle bases had distinct overlapping collars, but in Longidorus the collars were absent except for L. diadecturus. The odontostyle-odontophore junction from a lateral view appeared as a slanted transverse line in all the species, but in a dorsal view of Xiphinema and Californidorus it was V-shaped. Dorsal longitudinal seams of the odontostyle and odontophore were observed in all the species. The dorsally located odontostyle aperture was ca. 1 mum from the anterior end in all species, except in one Longidorus sp. it was ca. 4 mum from the end.
通过扫描电子显微镜对5种剑线虫属、4种长针线虫属和3种加利福尼亚线虫属线虫的口针超微结构进行了比较。在属与某些种之间，在齿针和口针基部观察到形态学差异。所有研究的剑线虫属线虫都有发育良好的齿针翼；长针线虫属线虫除了在双型长针线虫中有微弱发育的齿针翼外，均无齿针翼；而加利福尼亚线虫属线虫均无齿针翼。所有种的齿针都有三个窦。窦的长度因种而异。在剑线虫属和加利福尼亚线虫属中，口针基部有明显重叠的环，但在长针线虫属中，除双型长针线虫外均无环。从侧面看，所有种的口针-齿针连接处呈倾斜的横线，但从剑线虫属和加利福尼亚线虫属的背面看，它呈V形。在所有种中都观察到口针和齿针的背侧纵向缝。除一种长针线虫属线虫的口针孔距前端约4μm外，所有种的位于背侧的口针孔距前端约1μm。
