Can the parasites of the head of juvenile Thunnus thynnus help to identify its nursery areas in the Mediterranean Sea?

Between 2009 and 2013, the head region of 102 juveniles of Atlantic bluefin tuna (Thunnus thynnus L.) caught in four nursery areas of the Mediterranean Sea (Balearic Sea, Ionian Sea, Ligurian Sea and Tyrrhenian Sea) were analysed for parasites. Eleven parasite species were found: Capsala magronum, C. onchidiocotyle, C. paucispinosa, Nasicola klawei, Hexostoma thynni, Didymocystis sp. 2 (sensu Rodríguez-Marín et al., 2008), Didymosulcus sp. 2 (sensu Rodríguez-Marín et al. 2008), Didymosulcus wedli, Didymozoon pretiosus, Nematobothriinae gen. sp. and Wedlia sp. The prevalence of some food-borne parasites (Didymocystis sp. 2, D. pretiosus, Nematobothriinae gen. sp. and Wedlia sp.) had significant differences between localities (p ≤ 0.05). The results showed that the parasite fauna of juvenile tunas is not homogenously distributed in the Mediterranean Sea: parasite assemblages differed between hosts from the Balearic, Ionian, Ligurian, and Tyrrhenian seas, suggesting parasites as possible tags to identify the different tuna populations from the corresponding nursery areas.Postprint0,000

Violence within the lives of homeless people

Narrative Literature Review Experience of victimisation and violence is prevalent within homeless people’s lives, and frequently begins in childhood through the experience of childhood abuse and trauma. The impact of childhood abuse and trauma has been associated directly and indirectly as a pathway into homelessness. Furthermore the psychological impact of childhood abuse and trauma has been linked to victimisation and perpetration of violence within homeless people. Victimisation and perpetration of violence has been predominately researched on homeless adolescents and women, with homeless men significantly under researched. Victimisation and violence is associated with a number of similar factors including childhood abuse, re-victimisation, deviant peers, substance misuse and mental illness. Furthermore, research suggests homeless people frequently have a dual role as both victim and perpetrator. This review discusses these factors, the limitations of the current research, areas for further research and the clinical implications. Empirical Paper The current study was conducted to further explore the mechanisms surrounding childhood abuse and trauma and its association with aggression in homeless people. Emotion dysregulation has a growing body of research suggesting it has the unifying function to a number of maladaptive behaviours. Research suggests childhood aversive experiences are associated with developing emotion dysregulation difficulties and aggression. This study found that emotion dysregulation significantly mediated the relationship between childhood abuse and trauma, and aggression, within a sample of homeless people. The implications of the findings are discussed with reference to the need for psychological interventions for homeless people and highlights the importance of incorporating emotion regulation strategies within interventions for aggression.EThOS - Electronic Theses Online ServiceGBUnited Kingdo