Omair M, Naylor B, Jude D J, Quddus J, Beals T F, Vanderploeg H A
Center for Great Lakes and Aquatic Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA.
J Invertebr Pathol. 2001 Feb;77(2):108-13. doi: 10.1006/jipa.2001.5014.
Zooplankton of the Laurentian Great Lakes developed hernial protrusions whose gross appearance matches those on zooplankton described elsewhere in the world. We have carried out a histologic and cytologic analysis of the protrusions and found that they are composed of apparently degenerating or necrotic tissue(s) that has been expressed from the organism through the process of herniation. At their base the protrusions are continuous with viable tissue(s) within the organism through a fissure in the exoskeleton. Our observations lead us to suspect that these hernial protrusions are lethal. The development of such protrusions in zooplankton may be a worldwide phenomenon, but the cause of the herniation remains a mystery.
劳伦琴五大湖的浮游动物出现了疝样突出物，其总体外观与世界其他地方描述的浮游动物的突出物相匹配。我们对这些突出物进行了组织学和细胞学分析，发现它们由明显正在退化或坏死的组织构成，这些组织是通过疝形成过程从生物体中排出的。在突出物的基部，它们通过外骨骼上的裂缝与生物体内的存活组织相连。我们的观察结果使我们怀疑这些疝样突出物是致命的。浮游动物中出现这种突出物可能是一种全球现象，但疝形成的原因仍是个谜。
