Larsson J I Ronny
Department of Cell and Organism Biology, University of Lund, 223 62 Lund, Sweden.
J Invertebr Pathol. 2007 Jan;94(1):1-11. doi: 10.1016/j.jip.2006.07.006. Epub 2006 Sep 26.
In three field seasons, 2003-2005, bumble bees were collected in southern Sweden and eastern Denmark in search of microsporidian parasites. Of the 16 bumble bee species studied, microsporidia were found in Bombus hortorum, Bombus hypnorum, Bombus lapidarius, Bombus lucorum, Bombus pascuorum, Bombus pratorum, Bombus ruderarius, Bombus subterraneus and Bombus terrestris. Only one microsporidian species, Nosema bombi, was recorded. A microsporidium found in B. pratorum differed cytologically from microsporidia of the other host species. In the most frequently infected host, B. terrestris, the prevalence was 20.6%. Totally 1049 specimens were dissected. The light microscopic and ultrastructural cytology and pathology of N. bombi is described with focus on the variation recorded. Variation was especially prominent in the shape, size and coupling of spores, and in the length and arrangement of the polar filament. In four host species microsporidian infection was restricted to peripheral fat cells.
在2003年至2005年的三个野外季中，为寻找微孢子虫寄生虫，在瑞典南部和丹麦东部采集了熊蜂。在所研究的16种熊蜂中，在园熊蜂、暗熊蜂、宝石熊蜂、明亮熊蜂、草地熊蜂、普拉托熊蜂、红腹熊蜂、地熊蜂和 terrestris熊蜂中发现了微孢子虫。仅记录到一种微孢子虫物种，即熊蜂微孢子虫。在普拉托熊蜂中发现的一种微孢子虫在细胞学上与其他宿主物种的微孢子虫不同。在感染最频繁的宿主地熊蜂中，患病率为20.6%。总共解剖了1049个标本。描述了熊蜂微孢子虫的光学显微镜和超微结构细胞学及病理学，重点是所记录的变异。变异在孢子的形状、大小和配对以及极丝的长度和排列方面尤为突出。在四个宿主物种中，微孢子虫感染仅限于外周脂肪细胞。
