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A multidisciplinary approach to estimating red snapper, Lutjanus campechanus, behavioral response to mobile camera and sonar sampling gears



Details

  • Journal Title:
    Fisheries Research
  • Personal Author:
  • NOAA Program & Office:
  • Sea Grant Program:
    MASGC (Mississippi-Alabama Sea Grant Consortium)
  • Description:
    We examined the potential for Gulf of Mexico red snapper (RS) behavior to bias count estimates collected with a remotely operated vehicle (ROV), towed camera sled (TCS), subsurface towed acoustic sled (TAS), or SCUBA diver at artificial reef sites. Near- (≤ 5 m), mid- (≤ 15 m), and far-field (≤ 100 m) responses were examined using stationary stereo cameras, a horizontal acoustic profiler, and three-dimensional acoustic telemetry, respectively. Survey gears were deployed sequentially for 15 min with each gear immediately preceded by a 15-min control period. Near-field data (mean RS min−1) indicated counts were 7.3 times higher with the diver present and 1.9 times higher with the ROV. The TCS had a significant interaction effect with time on mean RS count in the near- and mid-field, as well as depth and acceleration. The TAS had no effect on RS behavior at any scale. Far-field data showed no significant effect of any gear on mean RS distance to reef. Overall, results indicate RS respond neutrally to survey gears at medium (≤ 15 m) to large (≤ 100 m) spatial scales, but small-scale (≤ 5 m) spatial attraction may bias RS counts with benthic survey gears, primarily by individuals near the periphery of the surveyed area approaching the gear.
  • Source:
    Fisheries Research, 246, 106155
  • DOI:
  • ISSN:
    0165-7836
  • Format:
    PDF
  • Publisher:
    Elsevier BV
  • Document Type:
    Journal Article
  • Funding:
    Grant no. NA16OAR4170181
  • Rights Information:
    Accepted Manuscript
  • Compliance:
    Submitted
  • Main Document Checksum:
    urn:sha256:4736cf3f1938aeb336464d3f49c7a68aff3edbe072c63c52f6f1eb4c10d6b65d
  • Download URL:
  • File Type:
    Filetype[PDF - 1.00 MB ]
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