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Parasite of Gnathia Sp. in Marine Fishes of the Western Coast of Libya

Gnathia sp. Infestations in Libyan Waters: Prevalence and Host Impact

The Gnathia sp. parasite, a marine isopod, is known to infest various fish species in Libyan waters. This study, conducted between 2017 and 2021, examined 345 fish individuals from nine different species to assess the prevalence and impact of Gnathia sp. infestations.

Key findings include:

  • 1,011 praniza larvae of Gnathia sp. were isolated.
  • The highest infection rate was in Diplodus sargus (66.67%), with a mean intensity of 6.57 larvae per fish.
  • The lowest prevalence was found in Sphyraena viridensis (3.85%), with a mean intensity of 1 larva per fish.
  • No Gnathia sp. infestation was recorded in Mustelus mustelus and Squalus sp.
  • The parasites were mainly found in the gill chamber, fins, and mouth cavity of the infected fish.

This study contributes critical baseline data on fish parasites in the southern Mediterranean and highlights the need for further monitoring of parasite-host interactions in marine ecosystems.


Key Findings :

  • First scientific documentation of Gnathia sp. infestations in Libyan marine fish.
  • Parasitic infections are highly species-specific, with certain fish more vulnerable.
  • Potential impacts on fisheries and marine biodiversity, requiring ecological assessment.

Research Type :


Field Study  &   Parasitology Assessment

Keywords :


Marine parasites, Gnathia sp., isopoda, fish diseases, Mediterranean biodiversity, Libya
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Publication Details

Authors

  • Sarah A. Benzeglam
    (University of Tripoli)
  • Mohamed L. Showehdi
    (Faculty of Veterinary Medicine, University of Tripoli)
  • Aisha A. Seif-Alnaser
    (University of Tripoli)
  • Esmail A. Shakman
    (University of Tripoli)