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Alan Deidun

  • Biodiversity Journal, 2 (3): 105-106
    Alan Deidun
    Alien species in the Mediterranean Sea
  • Biodiversity Journal, 2 (1): 019-026

    Alan Deidun & Alfio Germanà
    On the increasing occurrence of the Bluespotted Cornetfish Fistularia commersonii (Rüppel, 1838) in the Central Mediterranean (Osteichthyes, Fistulariidae)

    ABSTRACT
    The increasing occurrence of the blue-spotted cornet fish Fistularia commersonii, a highly successful Lessepsian migrant, within coastal waters of Sicily and of the Maltese Islands is hereby recorded. Reports of recent sightings of the species within such a marine area are documented and these suggest the establishment of viable populations for the species within the same marine area.

  • Biodiversity Journal, 17 (3): 299-302

    Paolo Balistreri, Sergio Bizzarri, Alan Deidun, Anna Maria Mannino & Bruno Zava
    New records of the Atlantic blue crab Callinectes sapidus Rathbun, 1896 (Crustacea Decapoda Portunidae) from the Egadian archipelago (Sicily, Italy)
    https://doi.org/10.31396/Biodiv.Jour.2026.17.3.299.302

    ABSTRACT
    The Atlantic blue crab Callinectes sapidus Rathbun, 1896 (Crustacea Decapoda Portunidae) has been reported again in the Egadian archipelago (Sicily, Italy) after its first capture from the archipelago in 2020 by two fishers. The species, already known for years from the western coast of the island of Sicily, had never been captured from the archipelago before 2020. Following this initial report, the species has been observed and captured in 2023 in nearshore waters off the island of Favignana, situated approximately 20 km to the west of Sicily. This finding is consistent with the habit of the crustacean, which moves away from transitional waters during the reproduction period.