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Diel movement patterns of the Hawaiian stingray, Dasyatis lata: implications for ecological interactions between sympatric elasmobranch species  [2003]

Cartamil, D. P. Vaudo, J. J. Lowe, C. G. Wetherbee, B. M. et al.

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Abstract
The Hawaiian stingray, Dasyatis lata, is a common benthic elasmobranch in nearshore Hawaiian waters. Acoustic telemetry was used to track the movements of seven rays in Kaneohe Bay, Oahu, Hawaii. Rays were tracked continuously over 31–74 h periods. Geographical movements were analyzed to determine space utilization and rate of movement. Rays were found to utilize significantly larger activity spaces at night (0.83±0.70 km²) (mean±SD) than during the day (0.12±0.15 km²). Mean total activity space for rays tracked was 1.32±0.75 km². Rates of movement were also significantly higher at night (0.34±0.30 km h⁻¹) than during the day (0.15±0.22 km h⁻¹). Average straight-line swimming speed was 0.64±0.16 km h⁻¹, with a maximum observed swimming speed of 1.9 km h⁻¹. Tidal stage had no effect on rate of movement. Comparison with previously published data on juvenile scalloped hammerhead sharks, Sphyrna lewini, in Kaneohe Bay revealed a high degree of overlap in habitat use and time of activity, suggesting possible ecological interactions between these two species.
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Other subjects

  • Dasyatis
  • Sphyrna
  • swimming
  • habitat preferences
  • juveniles
  • acoustics
  • telemetry

From the journal

Marine biology

ISSN : 0025-3162

Other information

Language : English

Type : Journal Article

In AGRIS since : 2016

Volume : 142

Issue : 5

Start Page : 841

End Page : 847

Publisher : Springer-Verlag

All titles :

" Diel movement patterns of the Hawaiian stingray, Dasyatis lata: implications for ecological interactions between sympatric elasmobranch species "