Reduced swimming performance in delta smelt infected with Mycobacterium spp

C. Swanson, Dolores Baxa, P. S. Young, J. J. Cech, Ronald Hedrick

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Delta smelt Hypomesus transpacificus infected with Mycobacterium spp. swam significantly more slowly (mean ± S.E., 24.5 ± 1.2 cm s-1) than uninfected fish (30.0 ± 1.7 cm s-1). Differences in swimming performance were not attributable to differences in fish size (Ls or wet mass), condition factor or laboratory holding duration. Similar proportions of non-fatigue-related swimming failure among the uninfected and infected fish indicated that mycobacteriosis did not affect the willingness of delta smelt to swim in the flume. Level of infection, measured for the dominant M. chelonae pathogen using enzyme-linked immunosorbent assay (EL1SA), did not affect critical swimming velocity.

Original languageEnglish (US)
Pages (from-to)1012-1020
Number of pages9
JournalJournal of Fish Biology
Issue number4
StatePublished - Oct 1 2002


  • Disease
  • Hypomesus transpacificus
  • Mycobacterium spp
  • Swimming performance
  • U

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science


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