Infection by Parorchis acanthus (Trematoda) decreases grazing by the keystone gastropod, Littoraria irrorata

Journal Article (Journal Article)

Parasites are well-known to alter the behavior of their hosts, but there is still a paucity of knowledge about how parasites modify the behavior of many ecologically influential host species. I studied the keystone grazer, the salt marsh periwinkle (Littoraria irrorata), to determine the influence of infection by the digenetic trematode, Parorchis acanthus, on its grazing behavior. Comparative laboratory grazing studies of wildcollected and experimentally infected snails revealed that Parorchis decreased grazing on live Spartina by more than 80%. Because of the large ecological influence of Littoraria in southern U.S. marshes, parasite modification of snail grazing may have ramifications for marsh ecosystem stability if parasite prevalence is sufficiently high.

Full Text

Duke Authors

Cited Authors

  • Morton, JP

Published Date

  • January 1, 2018

Published In

Volume / Issue

  • 2018 / 3

Electronic International Standard Serial Number (EISSN)

  • 2167-8359

Digital Object Identifier (DOI)

  • 10.7717/peerj.4544

Citation Source

  • Scopus