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European Directive 2010/63 addresses the welfare of cephalopod species used in scientific projects under European jurisdiction and covers experimental procedures likely to cause pain, suffering, distress, or lasting harm. These procedures require authorization from the National Competent Authorities. In aquaculture research, some procedures require the temporary immobilization of individuals to allow for measuring body parameters (i.e., weight, sex, gonad condition, and others),avoiding any damage. This study compares three anesthetics used on common octopus, Octopus vulgaris,paralarvae to reach a state of sedation. Check it out here! Escánez, A., J. Rubio, R. Riera & E. Almansa. 2017. Assessment of various anesthetics effects on Octopus vulgaris paralarvae. Journal of the Aquaculture World Society. DOI: 10.1111/jwas.12444.

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During 2008, the bacterium Photobacterium damselae subsp. piscicida was identified in meagre (Argyrosomus regius) culture during three disease outbreaks which occurred in Tenerife, Canary Islands, with mortalities reaching 50%. Typical disease signs were observed, including the characteristic spleen nodules, and bacterial identity was confirmed by biochemical and serological tests. This is the first reported isolation of Photobacterium damselae subspecies piscicida associated with mortalities in meagre. See details: Costa, J.Z., U. McCarthy, O. Pérez, E. Ramos, M. Rodríguez, Ó. Monterroso & R. Riera (2017). Occurrence of Photobacterium damselae subsp. piscicida in sea-cage farmed meagre (Argyrosomus regius) in Tenerife, Canary Islands, Spain. Thalassas. DOI: 10.1007/s41208-017-0022-5.

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The hydrozoan Macrorhynchia philippina is considered a circumtropical and subtropical species. In the last years, its distribution has been spread at higher latitudes because of global warming, facilitated by its invasive character. Macrorhynchia philippina develops prominent colonies that have the potential to colonize rapidly new substrates, showing invasive potential. See details Riera, R., F. Espino & L. Moro. 2016. Progressing the invasion of the hydrozoan Macrorhynchia philippina (Kirchenpauer, 1872) in Atlantic archipelagos. Vieraea, 44: 117-120.