STUDIES ON CESTODES OF THE GENUS TRIAENOPHORUS FROM FISH OF LESSER SLAVE LAKE, ALBERTA: III. NOTES ON TRIAENOPHORUS NODULOSUS (PALLAS) IN THE SECOND INTERMEDIATE HOST

• Published in: Canadian Journal of Research
• Main Author: Miller, Richard B.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1945
• Subjects: Pharmacology (medical); Complementary and alternative medicine; Pharmaceutical Science; Burbot; Lesser Slave lake; Lota lota; Slave Lake; lota
• Online Access: http://dx.doi.org/10.1139/cjr45d-001; http://www.nrcresearchpress.com/doi/pdf/10.1139/cjr45d-001

The plerocercoids of T. nodulosus were found in their earliest stages in the livers of burbot fry (Lota lota maculosa) in early July. At this time the worms occur scattered throughout the liver tissue, not enclosed in cysts. The anlagen of the scolex hooks are present.Later in July the cyst wall has developed and the plerocercoids are provided with a scolex identical with the adult structure. The cysts are small and compact and the contained worms strongly coiled in contrast to their earlier, diffuse state.During the second summer the plerocercoids begin to degenerate, the process proceeding from the posterior end forward. No burbot older than yearlings were found to contain cysts.A brief summary of the life history of T. nodulosus is given.