CETACEANS OFF GABON BASED ON A 2011 SIGHTING SURVEY, WITH A PRELIMINARY DENSITY ESTIMATE OF THE HUMPBACK WHALE MEGAPTERA NOVAEANGLIAE

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  • Diallo Samba T.
    Centre National des Sciences Halieutiques de Boussoura (CNSHB)
  • Sane Aboubacar
    Centre National des Sciences Halieutiques de Boussoura (CNSHB)
  • Nelson Thomas
    Department of Fisheries (DOF). Ministry of Agriculture, Fisheries, Physical Planning, Natural Resources and Co-operatives (MAFPPNRC) Conway Post Office
  • Katsumata Taiki
    Institute of Cetacean Research
  • Hakamada Takashi
    Institute of Cetacean Research

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  • CETACEANS OFF GABON BASED ON A 2011 SIGHTING SURVEY, WITH A PRELIMINARY DENSITY ESTIMATE OF THE HUMPBACK WHALE <i>MEGAPTERA NOVAEANGLIAE</i>

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<p>Results of a cetacean sighting survey in coastal Gabon waters from September 4 to 9, 2011 are reported. Four whale species humpback (30 schools/191 individuals), Bryde’s (1 school/2 individuals), sei (1 school/6 individuals), and sperm (2 schools/2 individuals), and 3 species of dolphin (pantropical spotted (1 school/150 individuals), Atlantic spotted (1 school/40 individuals) and bottlenose (1 school/25 individuals)) were observed over 232.1 nm of transect lines (26% of planned transects, covering 878.0 nm). Based on these survey data, using distance sampling methods, we estimate the density of humpback whales in this region to be 0.481 individuals/nm2 (CV=0.477).</p>

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  • 鯨類資源研究

    鯨類資源研究 3 (0), 258-264, 2021-12-28

    鯨類資源研究刊行会

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