Behaviour 2019
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Does parental exposure of sea bream (Sparus aurata) to ocean warming affect the progeny’s behavior?
Maria Rita Pegado1, Mónica Mai1, Eduardo Sampaio1,2, João Caramelo1, Pedro Pousão-Ferreira3, Ana Mendes3, Rui Rosa1, Marta Pimentel1. 1Marine and Environmental Sciences Centre, Cascais, Outside US/Canada, Portugal; 2Centre for the Advanced Study of Collective Behaviour, Konstanz, Outside US/Canada, Germany; 3Instituto Português do Mar e da Atmosfera, Olhão, Outside US/Canada, Portugal

The Anthropocene epoch has been characterized by several impacts of mankind on the Earth’s climate. As carbon dioxide emissions continue to rise, the temperature of our planet follows the same trend. In a business-as-usual scenario, the temperature is expected to increase 4 ᵒC by the end of the century. Recently, the changes that a warming ocean may impose on marine animal’s behaviour have been deeply studied, however, it is still unclear whether these impacts prevail over generations. Hence, the present work aimed to unravel if parental exposure of Sparus aurata to ocean warming (4 ᵒC) affects the progeny’s early behavior. To disentangle these effects, we collected eggs from progenitors exposed during 5 months to control (16 ᵒC) and warming conditions (20 ᵒC) and, in a multi-factorial design, we assigned the progeny to either control or warming treatments. After hatching (5 and 10 days), we observed larval behavior; specifically, we analysed the time spent swimming, feeding (number of attacks and captures) and defensive behavior (vertical display).