coeruleoalba) died in the Mediterranean, and shortly thereafter about a hundred bottlenose dolphins in the Gulf of Mexico. Other episodes in the Mediterranean, between 2007 and 2011, again affected several hundred striped dolphins. Deadliest disease, but no epidemics Since 2011, however, these great mass deaths have not been repeated, but there have been several isolated cases in which the disease has also shown a particularly devastating effect on animals. Last year, the analyzes carried out by Rubio-Guerri and his collaborators on five dolphins collected from the Valencian coastline helped explain this change in the disease pattern: these animals, killed as isolated cases instead of a major epidemic, had been infected by a new strain of

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the virus in the Mediterranean, most likely introduced Sao Tome and Principe Email List by animals from the Atlantic. The researchers then postulated that the Valencian cases had not been a single colonization circumscribed to the Spanish coasts – close to the ocean via the Strait – but that the strain was already established and circulating throughout the Mediterranean. New analyzes, of seven dolphins stranded in Sicily, now confirm this hypothesis. According to the researchers in Scientific Reports , the strain that killed these dolphins shows “substantial differences” with that detected in the epidemics in the Mediterranean in 1990, 2007 and 2011, while its similarity to variants found in the Atlantic in 2007, 2011 and 2013, and with the strain detected in the Valencian cases, it is

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“surprising”. Scientists still do not know why the new strain does not cause epidemics, although it is more aggressive in affected individuals. One possibility is that most, but not all, dolphins already have some immunity against this strain. Bibliographic references Morbillivirus in Sicily: Mira. Genetic heterogeneity of dolphin morbilliviruses detected in the Spanish Mediterranean in inter-A team of researchers from the Polytechnic University of Valencia (UPV) and the Higher Council for Scientific Research (CSIC), in collaboration with the Valencian Institute for Agricultural Research (IVIA) and Durham University (United Kingdom), has determined the epigenetic mechanism Through which the fruit inhibits flowering in citrus. This discovery is essential to

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