Abstract
Presence of Vibrio mediterranei associated to major mortality in stabled individuals of Pinna nobilis L.
Highlights
The populations of the pen shell, Pinna nobilis, have been devastated over the last two years associated with the presence of the parasitic protozoan Haplosporidium pinnae (Catanese et al, 2018; López-Sanmartín et al, 2019)
The marine bacterium Vibrio mediterranei was the dominant species in the three sacrificed pen shells and its presence was confirmed in ten deceased individuals despite the high bacterial load
Individuals were possibly subjected to chronic captivity stress, this finding supports the idea that V. mediterranei might be an opportunistic pathological agent for
Summary
The populations of the pen shell, Pinna nobilis, have been devastated over the last two years associated with the presence of the parasitic protozoan Haplosporidium pinnae (Catanese et al, 2018; López-Sanmartín et al, 2019). Ebro Delta (several hundred individuals) and that of the Mar Menor in Murcia (several hundred individuals found after the recovery of the lagoon from collapse due to eutrophication; Ruiz and Bernadeu, 2016) have not been infected by the parasite for reasons that are not well understood, but could be related to more restricted water circulation and altered patterns of salinity compared to the open sea (Cerralbo et al, 2019; Cabanellas-Reboredo et al, 2019) Under this critical scenario for the conservation of the species, the Spanish government changed the “vulnerable” conservation status approved by the European Union The remaining 115 pen shells, were transferred to IFAPA (50 individuals), IEO-Murcia (50 individuals), IMEDMAR (10 individuals), and l’Oceanogràfic (5 individuals)
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