Histopathology of an opecoelid trematode infection in mayfly naiads

Emory E. Knowles, John E. Hall

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Naiads of the mayfly, Litobrancha recurvata, were experimentally infected with an opecoelid trematode resembling Allopodocotyle lepomis. Cercariae entered the naiads in relatively large numbers through intersegmental articulations or distal gill filaments and encysted. The host response involved repair of entry wounds and hemocyte accumulation and encapsulation, occasionally with melanin deposition. However, parasite mortality was usually low, and many worms grew and developed. Damage to the insect was slight and usually limited to tissue displacement.

Original languageEnglish (US)
Pages (from-to)351-362
Number of pages12
JournalJournal of Invertebrate Pathology
Issue number3
StatePublished - 1976
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Insect Science


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