First report of Urosporidium sp., a haplosporidian hyperparasite infecting digenean trematode Parvatrema duboisi in Manila clam, Ruditapes philippinarum on the west coast of Korea.
First report of Urosporidium sp., a haplosporidian hyperparasite infecting digenean trematode Parvatrema duboisi in Manila clam, Ruditapes philippinarum on the west coast of Korea.
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尾孢子虫属 (Urosporidium sp.) 是一种单孢子类超寄生虫，感染韩国西海岸菲律宾蛤仔 (Ruditapes philippinarum) 中的双殖吸虫 Parvatrema duboisi。
DOI：
10.1016/j.jip.2015.08.004
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发表时间：
2015
影响因子：
3.4
通讯作者：
Kwang
中科院分区：
文献类型：
--
作者：
T. C. Le;Hyun;Hyun;Kwang;Kwang
在本研究中，我们首次报道了褐孢子虫的发生。一种感染吸虫的单孢子虫高寄生虫，寄生在韩国西部和南部海岸的菲律宾马尼拉蛤身上。larvalP。被孢子孢子虫孢子囊期感染后，其组织中可见大量淡黄色的小孢子。重感染的囊蚴体变性，幼虫常不动。被棘球蚴严重感染的蛤。杜波依西在地幔组织上也显示出异常的金色斑点。在组织学上，孢子虫的不同生命阶段。可鉴定为单核期、胞质期、孢子分生期和从包囊中释放的抗酸成熟孢子。扫描电镜（SEM）观察到成熟孢子在顶端呈半圆形边缘，孢子孔内部有瓣盖。在木孢中也发现了环状的花丝纹饰。扫描电镜显示，urosporidiumsp。在这项研究中发现了该属的新成员。ofUrosporidiumsp患病率。2010年4月，本研究中感染的吸虫率为2.5% - 24.0%，在西部和南部海岸调查的26个采样点中，有8个采样点观察到感染。
In this study, we first report on the occurrence ofUrosporidiumsp., a haplosporidian hyperparasite infecting the trematode,Parvatrema duboisi, which parasitizes Manila clams,Ruditapes philippinarumon the west and south coasts of Korea. The larvalP. duboisiinfected by the sporocyst stage ofUrosporidiumsp.demonstrated numerous small yellowish spores in their tissues. The heavily infected metacercariae exhibited degenerate bodies and the larvae were often motionless. Clams heavily infected by the metacercariae ofP. duboisialso displayed abnormal golden spots on the mantle tissue. In histology, different life stages ofUrosporidiumsp. could be identified, including the uni-nucleate, plasmodial, sporogonic stages and the acid fast mature spores released from the cyst. In scanning electron microscopy (SEM), the mature spore exhibited a semi-circular rim around the apical end and the orifice was covered internally with a flap. Loop-like filaments ornamentation was also identified fromUrosporidiumsp. in SEM, suggesting thatUrosporidiumsp. found in this study is a new member in the genus. Prevalence ofUrosporidiumsp.-infected trematodes in this study ranged from 2.5% to 24.0% in April 2010 and the infection was observed from 8 sampling sites out of the 26 sites surveyed on the west and south coasts.
DOI：
10.7939/r3j38kv04
发表时间：
1997-08
期刊：
The Journal of parasitology
影响因子：
--
作者：
A. O. Bush;K. Lafferty;J. Lotz;A. Shostak
通讯作者：
A. O. Bush;K. Lafferty;J. Lotz;A. Shostak