Patterns of activity and space utilization of lemon sharks, Negaprion brevirostris, in a shallow Bahamian lagoon

S. H. Gruber, D. R. Nelson, J. F. Morrissey

Research output: Contribution to journalArticle

139 Scopus citations

Abstract

Total activity space per individual ranged from 9-93 km2 (maximum-area polygon method). All sharks tracked at Bimini showed some degree of site attachment. The 2 largest sharks tracked elsewhere, did not remain in the area of tagging but made deepwater excursions. At Bimini, sharks tracked during the day were located eastward of their nighttime activity spaces. They moved westward over the flats at sunset and back eastward at sunrise, appearing to use the sun as an orientation cue. Tracks of 2 sharks fitted with speed-sensing transmitters demonstrated that swimming speeds were 2 times faster than the corresponding point-to-point rates of movement. Highest rate of movement were recorded at evening and morning twilight periods: average nighttime rate was higher than the daytime rate. Lemon sharks were associated with each other, with other sharks and with teleosts. -from Authors

Original languageEnglish (US)
Pages (from-to)61-76
Number of pages16
JournalBulletin of Marine Science
Volume43
Issue number1
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science

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