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<p>Several ecological surveys were recently conducted in the Akanda National Park in Gabon. The main objectives of this study were to assess the urban impact on the estuarine ecosystem of Libreville and to document the benthic biodiversity of this ecosystem. Among all the species collected, a new species of <i>Diopatra</i> was discovered in different habitats, including mangroves. This species is described and illustrated in detail, and information on 16S gene is provided. <i>Diopatra ariasi</i> sp. nov. is a medium-sized species and belongs to the <i>D. neapolitana</i> complex, having antennae with long ceratophores and ventral lobes. This species is also characterized by the presence of ceratophores with 9–12 rings on antennae, by sensory buds which are semicircular, by spiraled branchiae from chaetiger 4–5; by bidentate pseudocompound falcigers with moderately long hoods in first four chaetigers; by pectinate chaetae with 11–15 teeth from chaetiger 6–8 and by bidentate subacicular hooks from chaetiger 15–18.</p>

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A new species of Diopatra (Annelida, Onuphidae) from Akanda National Park in Gabon (West Africa)

  • 期刊论文

  • 发表日期：

    2025年10月30日

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  • Nicolas Lavesque,
  • Johann L. M. Happi,
  • Aimé R. Nzigou,
  • Guillemine Daffe,
  • Flore Daramy,
  • Martin M. Hektoen

摘要

Several ecological surveys were recently conducted in the Akanda National Park in Gabon. The main objectives of this study were to assess the urban impact on the estuarine ecosystem of Libreville and to document the benthic biodiversity of this ecosystem. Among all the species collected, a new species of Diopatra was discovered in different habitats, including mangroves. This species is described and illustrated in detail, and information on 16S gene is provided. Diopatra ariasi sp. nov. is a medium-sized species and belongs to the D. neapolitana complex, having antennae with long ceratophores and ventral lobes. This species is also characterized by the presence of ceratophores with 9–12 rings on antennae, by sensory buds which are semicircular, by spiraled branchiae from chaetiger 4–5; by bidentate pseudocompound falcigers with moderately long hoods in first four chaetigers; by pectinate chaetae with 11–15 teeth from chaetiger 6–8 and by bidentate subacicular hooks from chaetiger 15–18.