Laruelle Franck, Molloy Daniel P, Roitman Vitali A
CEDRE, Brest, France.
J Parasitol. 2002 Oct;88(5):856-63. doi: 10.1645/0022-3395(2002)088[0856:HAOTID]2.0.CO;2.
Four families of trematodes were observed in histological sections during a 1992-1997 investigation of the parasites of zebra mussels Dreissena polymorpha. These included Aspidogastridae, i.e., Aspidogaster, Echinostomatidae, Bucephalidae, i.e., Bucephalus polymorphus, and Gorgoderidae, i.e., Phyllodistomumfolium. This article describes the precise location of these trematodes in the tissues of D. polymorpha, provides graphic evidence of their effect on the organs they inhabit, and highlights the distinguishing morphological characteristics. Evidence of defense reaction of host to trematode infection, i.e., encapsulation of Aspidogaster and nacrezation of B. polymorphus, is also presented and is the first such report for zebra mussels. The histological photomicrographs included represent the first comprehensive series published on trematode infection of zebra mussels. These images, in conjunction with the morphological descriptions presented, should assist researchers in identifying the 4 major trematode taxa that they are likely to encounter in the tissue sections of zebra mussels.
在1992 - 1997年对多形饰贝（Dreissena polymorpha）寄生虫的调查中，在组织切片中观察到了四类吸虫。其中包括盾腹科，即盾腹吸虫属；棘口科；牛首科，即多形牛首吸虫；以及戈德科，即叶形片形吸虫。本文描述了这些吸虫在多形饰贝组织中的精确位置，提供了它们对所寄生器官影响的图像证据，并突出了其显著的形态特征。文中还呈现了宿主对吸虫感染的防御反应证据，即盾腹吸虫的包囊化和多形牛首吸虫的珍珠化，这是关于斑马贻贝的此类首例报告。所包含的组织学显微照片代表了关于斑马贻贝吸虫感染的首个全面系列出版物。这些图像，连同所呈现的形态学描述，应有助于研究人员识别他们在斑马贻贝组织切片中可能遇到的4个主要吸虫类群。
