Curiosità

Caldo, mare e meduse: allarme in Italia per specie potenzialmente mortali

È emergenza meduse sulle coste italiane. Dalle acque spagnole a quelle italiane in arrivo la “velenosissima Caravella portoghese (Physalia physalis), avvistata pochi giorni fa sui litorali iberici.

Caldo, mare e meduse: allarme in Italia per specie potenzialmente mortali

Come riportano autorevoli testate spagnole, alcuni esemplari sono stati avvistati al largo di San Juan ad Alicante e delle Costa del Sole, quella sulla quale si affacciano le spiagge di Malaga, la stessa Almeria e quelle dove si riversano gli abitanti di Granada, Murcia. La medusa, ancora poco conosciuta, apparsa improvvisamente, giungerà a breve anche sui litorali italiani.

La dottoressa Angela Santucci, biologa marina presso l’Istituto di Scienze Marine del CNR di Lesina (Foggia) fa sapere che negli ultimi 10 anni gli avvistamenti di meduse lungo le coste italiane sono aumentati addirittura di dieci volte.

“Il nostro mare è la casa di numerose specie di meduse, sia native che aliene” spiega la biologa osservando che “ormai ogni estate siamo a rischio a causa dell’innalzamento delle temperature globali, dei massivi traffici marittimi attraverso i canali che ci collegano con gli oceani, soprattutto quello di Suez, del depauperamento delle popolazioni di grossi pesci predatori, nonché competitori alimentari delle meduse”.

Alcune, arrivate dai tropici, possono essere letali. È il caso della “velenosissima Caravella portoghese (Physalia physalis), avvistata al largo della Sicilia, della Sardegna e recentemente anche a Villa San Giovanni (Reggio Calabria) – spiega Santucci – che nei suoi lunghi tentacoli ha tossine che possono causare fortissimi dolori e anche l’arresto cardiaco nell’uomo. Cosa fare se una medusa ti colpisce? Poche, ma utili “regole d’oro”, suggerisce Giovanni D’Agata, presidente dello “Sportello dei Diritti” in caso di contatto con le meduse,:

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