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Le alborelle — estinte nel Ceresio da qualche anno — sono al centro di un progetto del dipartimento del territorio che vuole riportarle nel loro habitat. Gli esemplari adulti vengono prelevati nel Verbano, fatti riprodurre in piscicoltura e re-immessi a Melide.
L’alborella è lunga meno di 16 cm, ma per secoli è stato un provvidenziale contributo di proteico per i nostri avi. Un tempo molto abbondante era un vero e proprio simbolo del Ceresio. Negli anni 80 vi è stata la prima diminuzione e dal '96 quando era praticamente scomparsa.
Dallo scorso anno il dipartimento del territorio sta cercando infatti di riportare l'alborella nel Ceresio attraverso immissioni regolari con un nuovo ceppo di riproduttori prelevati dal Verbano e portati in piscicoltura a Brusino-Arsizio. Circa 6 mila esemplari verranno immessi tra un paio di mesi in un luogo preciso del Ceresio.
Quot/Chiara Piccaluga
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