Density dependence of postlarval survivorship in primary infections of Protopolystoma xenopodis

Joseph A. Jackson*, Richard C. Tinsley

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

9 Citations (Scopus)

Abstract

Naive, full-sibling juveniles of Xenopus laevis laevis were exposed to 10, 30, or 50 larvae of the monogenean Protopolystoma xenopodis from an isolate known to produce relatively low adult establishment (typically less than 25% prevalence) in hosts of the same pedigree. Postlarval survival (worms per host) 7 days postinfection (PI), timing from the end of a 10-day infection window, was significantly related and proportional (∼31%) to infection dose. Establishment of newly mature adults 90 days PI was low (0-3 worms/host) and unrelated to infection dose. Results confirm that postlarval mortality is severe in primary infections, and that surviving adult infrapopulations appear to be regulated to a very low level (most often 1 worm/host), even at relatively high larval infection pressures. This density-dependent process could involve direct antagonistic parasite-parasite interactions or indirect interference mediated by parasite-induced host defenses.

Translated title of the contributionDensity-dependence of postlarval survivorship in primary infections of Protopolystoma xenopodis
Original languageEnglish
Pages (from-to)958-960
Number of pages3
JournalJournal of Parasitology
Volume89
Issue number5
DOIs
Publication statusPublished - 1 Oct 2003

Fingerprint Dive into the research topics of 'Density dependence of postlarval survivorship in primary infections of Protopolystoma xenopodis'. Together they form a unique fingerprint.

Cite this