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Giorgio Sabella

  • Biodiversity Journal, 15 (2): 211-218 - MONOGRAPH

    Sara Basile, Luca Montevago, Vincenzo Di Dio, Giorgio Sabella, Rosaria Mulè & Barbara Manachini
    Since 2015, the first solitary bee hotels in Sicily located in the small island of Isola delle Femmine Nature Reserve, Sicily (Italy)
    https://doi.org/10.31396/Biodiv.Jour.2024.15.2.211.218

    ABSTRACT
    Natural pollinators, mainly represented by solitary apoidea, play an essential role in ecosystems and biodiversity. Their population has sharply declined recently, putting both flora and fauna biodiversity at risk. Many studies report that artificial nesting for reproducing solitary bees, also known as bee hotels, can support conservation and increase the number of pollinators. Unipa and LIPU Isola delle Femmine Nature Reserve wanted to create the first bee hotels in 2015 near the coast. In particular, the goal of this project was to protect and increase biodiversity on the islet of Isola delle Femmine, a peculiar and challenging to-balance environment where there are more than 200 botanical taxa present on the island, some of which are endemic to Sicilian north-western coast, including pollination by insects. In the current state of knowledge, it is the first case of installing bee hotels in a coastal area so close to the sea, which entailed a significant technical challenge in the construction using recycled material. The hotels built were wholly colonized in a very short period, and even when maintenance and replacement of materials were carried out in less than a week, the recolonization was rapid. Most individuals belonged to the Megachilidae family, which is characteristic of the Mediterranean. The bee hotels have also been a source of curiosity and insight for the reserve visitors. In conclusion, the bee hotel proved useful for colonizing pollinators and increasing reserve use.

  • Biodiversity Journal, 15 (2): 193-198 - MONOGRAPH

    Vera D’Urso, Salvatore Bella, David Mifsud, Arthur Lamoliere & Giorgio Sabella
    Problems and perspectives for the use of exotic predators and parasitoids in biological control
    https://doi.org/10.31396/Biodiv.Jour.2024.15.2.193.198

    ABSTRACT
    The accidental introduction of alien organisms potentially harmful to agriculture can cause extensive damage to vegetable crops and fruit plants and is favoured by the global mobility of people, trade of goods and the ongoing climate change. The use of alien predators and parasitoids is well known in the agricultural field, where they are often used for biological control to protect fruit and horticultural plants. The management of invasive species is and will be one of the key issues for preserving biodiversity and the profitability of crops, the latter can now count on an effective, consolidated and lasting strategy: Integrated Pest Management (IPM). The legislation on this subject is complex and articulated and is continuously being updated. It allows for the development of specific skills in biological control and the availability to use quarantine chambers where it is possible to breed and study the behaviour of antagonists (predators and parasitoids), even exotic ones. If successful, their subsequent release to targeted biological control interventions of infestations of the IAS ‘Invasive Alien Species’ can be carried out. This contribution highlights the risk that such practices may involve and takes into account the following points: 1. The behaviour of an alien species can be very different in different contexts, being able to be a real IAS or not showing any character of invasiveness; 2. The behavior of an alien species can vary over time in the same context, diversifying and also expanding its trophic niche; 3. A good number of indigenous predators and parasitoids can over time adapt to new alien prey/hosts and could potentially be used for biological control. In future, biological control will be increasingly used given that EU funds reward and support this type of approach and the intentional introduction of alien natural predators and parasitoids into agroecosystems, although subject to strict protocols, cannot exclude spontaneous colonization by these last of natural environments with currently not assessable consequences on their biocoenosis. In conclusion, the rigorous risk analysis alone does not currently seem sufficient to exclude potential damage to local biodiversity, and programs for the release of exotic predators and parasitoids should be associated with mandatory monitoring of at least five years to verify the behaviour of these aliens in nature and their possible impact on ecosystems.

  • Biodiversity Journal, 15 (2): 187-192 - MONOGRAPH

    Giorgio Sabella & Fabio Massimo Viglianisi
    Design and preparation of a thematic showcase on alien species at the Museum of Zoology of the University of Catania (Italy)
    https://doi.org/10.31396/Biodiv.Jour.2024.15.2.187.192

    ABSTRACT
    As part of the Interreg FAST (Fight Alien Species Transborder) project, in which the Zoology Museum of the University of Catania (Italy) is involved, in the Museum main room a thematic exhibition relating to alien species, also equipped with interactive supports, has been planned. This action is part of the communication strategy of the aforementioned project, providing for the promotion of Citizen Science initiatives that bring all citizens closer to this problem, increasing their awareness and participation. Some of the most representative and iconic animals linked to this issue will be exhibited within this space. Visitors will be able to observe both vertebrates such as the Nutria (Myocastor coypus Molina, 1782) or the American pond turtle (Trachemys scripta Thunberg in Schoepff, 1792), and invertebrates such as the Red palm weevil (Rhynchophorus ferrugineus Olivier, 1790) or the Louisiana red crayfish (Procambarus clarkii Girard, 1852). Also, a large poster illustrating all the species of alien birds in Europe will complete the exhibition, which will also be accompanied by information panels in Italian and English regarding not only the animals on display but also the aims and objectives of the FAST project. Adjacent to the exhibition space an 80-inch touch screen monitor will be installed with a software, also for children, for the recognition of native and alien species, accompanied by information collected in a database on alien invasive species present in Sicily and in Malta.

  • Biodiversity Journal, 15 (2): 179-185 - MONOGRAPH

    Giorgio Sabella & Fabio Massimo Viglianisi
    The new layout of the Museum of Zoology of the University of Catania (Italy) one year after its opening
    https://doi.org/10.31396/Biodiv.Jour.2024.15.2.179.185

    ABSTRACT
    On 9 July 2021 the Museum of Zoology of the University of Catania (Italy), the oldest Sicilian zoological museum whose foundation dates back to 1853 by Prof. Andrea Aradas, reopened to the public with a new layout, which involved the elimination of all the showcases in which the specimens were displayed. The new project instead envisaged that all the vertebrate specimens present in the main room, around 170, are arranged on open platforms and grouped according to systematic or biogeographical criteria. An emotional museum was thus created in which the elimination of the showcases and the possibility to walk among the exhibits without barriers or limitations increase the emotional and emphatic involvement of the visitor, helping the transmission of information on biodiversity and the relationship between man and nature.