Abstract
This study represents the first scanning electron microscope (SEM) evaluation of cestode larvae infecting Red Sea fish. General structures of the larvae and different types of microtriches on the integument are described.Plerocercoids of Trypanorhyncha were collected from the mesenteries and liver of Cephalopholis oligostricta. The capsule of each larva was opened, the plerocercoid was removed and fixed in 10% formalin. Following buffer (pH. 7.3) wash, they were fixed in OSO4 12 hr, washed in buffer, immersed in 2% tannic acid 8 hr, washed in buffer, fixed again in OSO4 2 hr, buffer washed, dehydrated, critical point dried, and sputter coated with gold.The plerocercoids were identified as belonging to the genus Otobothrium. Each organism was divided into a scolex and body. The scolex consisted of two large bothria, each bothrium was nearly round in outline and possessed two circular invaginations on its posterior margin. On the apex of the scolex, four extended tentacles covered with hooks were observed (Fig 1).
Published Version
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