Infanticide is considered a conspicuous expression of sexual conflict amongst mammals, including bottlenose dolphins. Although reported previously in this species, confirmed cases of infanticide and associated epimeletic behaviour are very rare and their socio-behavioural context remains poorly understood. Here, we provide evidence of epimeletic and infanticide behaviours in free-ranging bottlenose dolphins in Galicia, NW Spain. After describing the observed events, we include a complete description of the post-mortem examinations (where the carcasses were recovered) in order to confirm the cause of death. With evidences of blunt trauma in two of the presented cases, we confirm that the calves were intentionally killed by adult individuals. The aggressive interaction between adult individuals and the neonates together with the observed ante-mortem injuries bore a strong resemblance to the behaviours and traumatic injuries described in other cases of violent dolphin interactions in other parts of the world. The circumstances under which these infanticides occurred at our site fit the conditions proposed under the sexual selection hypothesis. The difficulties for researchers to observe this type of behaviour in the field and to find carcasses in good enough condition to determine the cause of death, emphasizes the importance of this type of study.

Intergenerational transfers play an important role in individuals' lives across the lifecourse. This paper reviews theories on intergenerational transfers and social change to inform our understanding of how changes in the educational context that arise from the spread of mass education influence children's support of their parents. By examining multiple aspects of the educational context in rural Nepal, including husbands' and wives' education and exposure to schools, this paper provides new information on the mechanisms through which changes in social context influence children's support of their parents. Multilevel logistic regression was used to estimate the relationship between schooling, exposure to schools, and the likelihood of couples giving to their parents. It was found that schooling and exposure to schools have independent and opposite effects on the support of older parents. Higher levels of schooling for husbands were associated with a higher likelihood of having given support to husbands' parents. On the other hand, increased exposure to schools for husbands and wives was associated with a lower likelihood of having given to wives' parents. The findings provide evidence that multiple motivations for intergenerational support exist simultaneously and are related to social context through different mechanisms.