Early social environment and the fighting behaviour of young Oreochromis niloticus (Pisces, Cichlidae)

This study examines the influence of early experience with different forms of aggressive behaviour on the fighting behaviour of young fish. Fry of the cichlid fish, Oreochromis niloticus, were raised from hatching in small groups consisting of a normal individual (the test fish) and either mutant conspecifics lacking the dorsal fin and thereby the ability to perform fin displays, or normal ones. Following a 63-day period of development in groups the test fish were confronted in their home tanks with an unfamiliar normal fish for 10 min. The fighting behaviour of the test fish was analyzed considering their previous group type (mutant or normal) and rank (alpha or beta). There was no difference between test fish in the rate and sequence of behaviour patterns used in fighting. However, test fish that had developed in mutant groups were rarely the first to bite in contests and had a longer latency to biting following the first bite of the stimulus fish than rest fish with normal experience. This finding is attributable to the form of aggressive behaviour experienced by the test fish during development but not to existing differences in the amount of aggression previously experienced, nor to previous rank, sex, or size relative to the stimulus fish. The results suggest that early experience influenced decision making by the test fish during the fight. The involvement of the fin displays and the possible mechanism of this influence are discussed.

Jornalismo pós-televisivo: o caso do jornal Bom dia Bauru

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Comunicação no terceiro setor: novos paradigmas para transformação social

This study is the result of a bibliographical research on the performance of the Third Sector in the current society. From references the study tried to locate the sprouting of the Third Sector in the international scene, whit the bankruptcy of welfare state, until its insertion in the Brazilian scene. Following this historical context, the paper of Communitarian Communication, Social Marketing and Communitarian Public Relations is discussed the importance of the communication of this Sector. Moreover, it has the effort of making one brief conceptualization and definition of the present terms. Working whit the concepts of Communitarian Communication and Communitarian Public Relations the study tried to focus the importance of creating a bond whit the development of a new educational model. Finally, the relation and the paper of the Communication in the construction of a new conception of citizenship was discussed. The hypothesis that crossed this study with respect to the potentialities of the Third Sector are considered an answer to the current social economic and political questions. Confiding, thus, a dynamic and stimulating field for the professional of Public Relations that, opposing what some studies had tries to show, are not necessarily the service of the market or private interests, but can collaborate whit its expertise to help to rescues the ethical values capable to change the life into a more solidary society