关于1972年发现的脑粘体虫（粘孢子虫纲：粘孢子虫目）的补充研究及分子数据，该寄生虫寄生于蒙古国科苏古尔湖茴鱼（北极茴鱼黑色变种）。

Supplementary studies and molecular data on Henneguya cerebralis Pronin, 1972 (Myxozoa: Myxosporea), a parasite from Kosogol grayling Thymallus arcticus nigrescens in Mongolia.

作者信息

Batueva Marina D-D, Katokhin Alexey V, Pronina Svetlana V, Pronin Nikolay M

机构信息

Institute of General and Experimental Biology of Siberian Branch RAS, Ulan-Ude, Russia.

出版信息

Parasitol Int. 2013 Dec;62(6):530-4. doi: 10.1016/j.parint.2013.07.014. Epub 2013 Aug 8.

DOI:10.1016/j.parint.2013.07.014

PMID:23933262

Abstract

Henneguya cerebralis Pronin, 1972 (Myxozoa) was described from Kosogol graylings Thymallus arcticus nigrescens Dorogostaisky, 1923 in Lake Khovsgol (Mongolia) in 1972. H. cerebralis was redescribed using critical morphological features and 18S ribosomal DNA (rDNA) gene sequence. Parasite infects cranial cartilage of fish host. Plasmodia are white rounded or ovoid, by 0.1 to 2mm in size, containing large quantities of spores. Spore body is ovoid or rounded, 11.18 ± 0.13 μm (range 9,71-12,56) in length and 9.06 ± 0.16 μm (range 7.22-10,06) in width with equal polar capsules (4.7×2.6 μm). The two caudal appendages have different lengths (one of them was shorter in 20%). Phylogenetic position inferred by 18S rDNA shows that H. cerebralis is closely related with H. zschokkei, H. nuesslini, H. salminicola and H. cartilaginis which are histozoic parasites of salmonid fish.

摘要

脑粘体虫（Henneguya cerebralis Pronin，1972年）（粘孢子虫纲）于1972年在蒙古库苏古尔湖的科苏古尔河茴鱼（Thymallus arcticus nigrescens Dorogostaisky，1923年）中被发现。利用关键形态特征和18S核糖体DNA（rDNA）基因序列对脑粘体虫进行了重新描述。该寄生虫感染鱼类宿主的颅骨软骨。孢囊为白色圆形或椭圆形，大小为0.1至2毫米，含有大量孢子。孢子体为椭圆形或圆形，长11.18±0.13微米（范围9.71 - 12.56微米），宽9.06±0.16微米（范围7.22 - 10.06微米），极囊大小相等（4.7×2.6微米）。两条尾突长度不同（其中一条较短的情况占20%）。通过18S rDNA推断的系统发育位置表明，脑粘体虫与鲑科鱼类的组织内寄生虫——乔氏粘体虫（H. zschokkei）、努氏粘体虫（H. nuesslini）、鲑居尾孢虫（H. salminicola）和软骨粘体虫（H. cartilaginis）密切相关。