Furuya Hidetaka
Department of Biology, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
J Parasitol. 2009 Jun;95(3):681-9. doi: 10.1645/GE-1875.1.
Two new species of dicyemid mesozoan are described from Sepia longipes, Sasaki, 1913, collected from Tosa Bay in Japan. Dicyema oxycephalum n. sp. is a medium-sized species that is about 1,800 microm in length. It lives in folds of the renal appendages. The vermiform stages are characterized as having 28-34 peripheral cells, a conical calotte, and an axial cell that extends to the base of the propolar cells. Infusoriform embryos consist of 39 cells; 2 nuclei are present in each urn cell and the refringent bodies are solid. Pseudicyema cappacephalum n. sp. is also a medium-size species; it is about 1,000 microm in length. It too lives in folds of the renal appendages. The vermiform stages are characterized as having 32-34 peripheral cells, a cap-shaped calotte, and an axial cell that extends to the base of propolar cells. Infusoriform embryos consist of 39 cells; 2 nuclei are present in each urn cell and the refringent bodies are solid. This is the first description of dicyemids from S. longipes.
从采自日本土佐湾的1913年佐佐木氏的长蛸（Sepia longipes）体内，鉴定出两种新的二胚虫纲中生动物。尖首二胚虫（Dicyema oxycephalum）新种是一种中型物种，体长约1800微米。它生活在肾附属器的褶皱中。蠕虫状阶段的特征是有28 - 34个外周细胞、一个圆锥形的顶、以及一个延伸至前极细胞基部的轴细胞。滴虫形胚胎由39个细胞组成；每个坛状细胞中有2个细胞核，折光体为实心。帽首拟二胚虫（Pseudicyema cappacephalum）新种也是一种中型物种；体长约1000微米。它同样生活在肾附属器的褶皱中。蠕虫状阶段的特征是有32 - 34个外周细胞、一个帽状的顶、以及一个延伸至前极细胞基部的轴细胞。滴虫形胚胎由39个细胞组成；每个坛状细胞中有2个细胞核，折光体为实心。这是首次对来自长蛸的二胚虫的描述。
