摘要
1964年8月,我们在福建省惠安、崇武所产的鳗仔Ophichthys sp.的消化道中采得两个复殖吸虫。经研究,认为是Phyllotrema Yamaguti(1934)属的一个新种。兹记述如下:小睾叶孔吸虫(新种)Phyllotrema microrchis sp.nov.中等大的吸虫,前端稍尖,后端较平而中央略凹入,体两侧几近平行,光滑无棘。口吸盘后缘较平。腹吸盘大于口吸盘,位于体前部约l/3处。前咽仅见于其中的一个标本。食道细长,肠支不达体末端,终于最后一簇卵黄腺之前缘。
PHYLLOTREMA MICRORCHIS sp.nov.Fluke of medium size with anterior end slightly pointed and posterior end truncate but concave in the middle.Body smooth,8.4-9.8×2.2-2.3 mm.Oral sucker 0.57-0.58×0.67-0.68 mm.Acetabulum situated at the anterior third of body,0.92-0.94×0.86-0.93 mm.Prepharynx observed in one of the two specimens,0.12 mm.Pharynx 0.27-0.29×0.38-0.40 mm.Oesophagus 0.71-1.08 mm.Intestinal crura ending in front of the last group of vitelline glands,not reaching posterior end.Testes very small,oval,parallel,in middle of body,0.21-0.25×0.21-0.29 mm.Cirrus sac claviform,with its posterior end not reaching acetabulum.Seminal vesicle sac-like.Genital atrium at level of middle and to right of oesophagus.Ovary oval or round,about the size of testes,0.23-0.24×0.29 mm situated about midway between acetabulum and left testis.Seminal receptacle lateral,close to and in front of ovary.Mehlis’gland well developed.Vitelline glands with follicles in groups of branches,distributed from anterior to intestinal bifurcation to posterior end of body and overlapping crura.Vitelline ducts at level of ovary.Uterine coils few,behind acetabulum and extending posterior to testes,occupying only about one third of the body length.Metraterm with eggs,running from anterior of acetabulum along cirrus sac to genital atrium.Eggs oval,0.052-0.060×0.030-0.036 mm.Excretory bladder long,tubular,reaching to level of testes.Parasitic in digest tract of Ophichthys sp.,Huian County,Fujian Province,August 1964.The genus Phyllotrema was established in 1934 by Yamaguti with P.bicaudatum as the type which remains unique in the genus.P.microrchis sp.nov.may be distinguished from the type species by(1)the larger size of the body and the smaller size of the eggs,(2)the presence of about one third of the total uterine loops between acetabulum and ovary and the uterus not extending as far behind the testes as that of the type species,(3)the cirrus sac being shorter,with its proximal end not overlapping acetabulum,(4)the testes being very small as comparing with the larger size of the worm.hence the name Phyllotrema microrchis sp sp.nov.
作者
金大雄
张剑英
纪国良
Jin Daxiong;Zhang Jianying;Ji Guoliang(Guiyang Medical College;Central China Agricultural College)
出处
《海洋与湖沼》
1979年第3期282-284,共3页
Oceanologia Et Limnologia Sinica
