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Italy as a Hotspot for Honey Bee Threats
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1  National Reference Laboratory for Honey Bee Health, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), 35020 , Italy
Academic Editor: Nickolas Kavallieratos

Abstract:

Italy is increasingly a hotspot for honey bee pests and predators, facing threats from Varroa destructor (1981), Aethina tumida (Small Hive Beetle, SHB) (2014), invasive Vespa velutina (2012), and the expanding native Vespa orientalis (2018). Adding to these concerns, Tropilaelaps spp. are emerging as a potential new threat to European beekeeping.

Tropilaelaps mercedesae mites, established since 2021 in Russia’s Krasnodar region and more recently in Georgia’s Samegrelo-Zemo Svaneti region (2024), pose significant challenges due to their rapid reproductive cycle and lack of effective control options. Unlike in Asia, where Tropilaelaps is well known, European beekeeping differs in hive management and honey bee species, requiring tailored surveillance and mitigation strategies.

Infestations spread quickly through direct contact between bees and the movement of infested bees or brood. Left undetected, mite populations grow rapidly, causing high hive mortality and acting as vectors for honey bee viruses.

The presence of exotic pests in Italy highlights the need for proactive measures. With Varroa, SHB, and Tropilaelaps all regulated under the Animal Health Law (EU 2016/429), Italy already faces three of the four listed honey bee diseases (EU 2018/1629). Key challenges include identifying effective surveillance methods, developing veterinary medicinal products (currently unavailable in Italy), and refining hive management techniques for containment and control.

The responsibility for maintaining colony health and biosecurity lies with beekeepers, but a science-based strategy is urgently needed. Managing Varroa, SHB, and invasive wasps demands integrated pest management and coordinated monitoring. Addressing the absence of approved Tropilaelaps treatments in Italy is critical to safeguarding European apiculture.

Keywords: beekeeping, control strategy, preparedness, mite infestation
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