Trematode community structure in the pulmonate snail Physa gyrina

Scott D Snyder, G. W. Esch

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Trematode community structure was examined in the pulmonate snail Physa gyrina over a 12-mo period. A total of 1,181 snails was collected from Charlie's Pond, North Carolina, and was found to be parasitized by 6 trematode species. Infracommunities were relatively species rich when compared to previous studies, with 18.4% of infected snails having multi-species infections. Halipegus eccentricus was found in 88.4% of multiple infections, usually with 1 of 2 other autogenic, egg-transmitted species (Haematoloechus complexus and Glypthelmins quieta). Neither negative interspecific interactions nor a dominance hierarchy were apparent among the trematodes. These factors, along with high snail vagility and the temporal heterogeneity of infective stages in the environment, are suggested to have contributed to the high number of multiple infections. Halipegus eccentricus was also the most prevalent parasite throughout the study, occurring in nearly 50% of all snails during May, June, and July. Apparent parasite-induced host mortality caused by this trematode species contributed to increasing species diversity in larger snails. The component community was also affected by the continuous recruitment of new snails into the host population and by changes in the number of infective stages present over time.

Original languageEnglish (US)
Pages (from-to)205-215
Number of pages11
JournalJournal of Parasitology
Volume79
Issue number2
DOIs
StatePublished - Jan 1 1993

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Physa
Snails
Trematoda
snail
snails
community structure
Halipegus
parasite
Parasites
Infection
infection
Social Dominance
parasites
interspecific interaction
Ovum
species diversity
pond
egg
mortality
Mortality

ASJC Scopus subject areas

  • Parasitology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Trematode community structure in the pulmonate snail Physa gyrina. / Snyder, Scott D; Esch, G. W.

In: Journal of Parasitology, Vol. 79, No. 2, 01.01.1993, p. 205-215.

Research output: Contribution to journalArticle

Snyder, Scott D ; Esch, G. W. / Trematode community structure in the pulmonate snail Physa gyrina. In: Journal of Parasitology. 1993 ; Vol. 79, No. 2. pp. 205-215.
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