Induction and duration of tonic immobility in the lemon shark, Negaprion brevirostris

Mitchell Aaron Watsky, Samuel H. Gruber

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Tonic immobility (TI) is an unlearned behavioral response characterized by a state of immobility and torpor. Effect of inter-trial interval on duration of tonic immobility was assessed in thirty, juvenile lemon sharks (Negaprion brevirostris). Regression analyses showed that massed trials of 12 per session increased the average duration of tonic immobility by 475 sec compared to spaced trials of 1 per session. Each experiment was composed of 24 trials. TI is stable and durations much longer in the lemon shark than for other sharks. These findings have enabled us to develop a quantitative bioassay for use in testing chemical shark repellents.

Original languageEnglish (US)
Pages (from-to)207-210
Number of pages4
JournalFish Physiology and Biochemistry
Volume8
Issue number3
DOIs
StatePublished - May 1 1990
Externally publishedYes

Fingerprint

Negaprion brevirostris
Sharks
Bioassay
shark
sharks
duration
Testing
resting periods
Experiments
Torpor
repellents
torpor
behavioral response
bioassays
Biological Assay
bioassay
Regression Analysis
trial
testing
experiment

Keywords

  • and shark repellent
  • behavior
  • bioassay
  • elasmobranch
  • Negaprion
  • shark

ASJC Scopus subject areas

  • Physiology (medical)
  • Physiology
  • Biochemistry
  • Biochemistry, Genetics and Molecular Biology(all)
  • Aquatic Science

Cite this

Induction and duration of tonic immobility in the lemon shark, Negaprion brevirostris. / Watsky, Mitchell Aaron; Gruber, Samuel H.

In: Fish Physiology and Biochemistry, Vol. 8, No. 3, 01.05.1990, p. 207-210.

Research output: Contribution to journalArticle

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