Academic literature on the topic 'Paternagem'
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Journal articles on the topic "Paternagem"
Leandro, José Augusto, and Bruna Alves Lopes. "Cartas de mães e pais de autistas ao Jornal do Brasil na década de 1980." Interface - Comunicação, Saúde, Educação 22, no. 64 (May 25, 2017): 153–63. http://dx.doi.org/10.1590/1807-57622016.0140.
Full textDantas, Fabiana Souza S., and Sandra Patrícia A, Ferreira. "Adoção tardia: produção de sentidos acerca da paternagem e filiação em uma família homoafetiva." Temas em Psicologia 23, no. 3 (2015): 593–606. http://dx.doi.org/10.9788/tp2015.3-06.
Full textWeber, Florence. "Lares de cuidado e linhas de sucessão: algumas indicações etnográficas na França, hoje." Mana 12, no. 2 (October 2006): 479–502. http://dx.doi.org/10.1590/s0104-93132006000200009.
Full textSander, Johannes. "Paternaler Einfluss beiArabidopsis thaliana." Biologie in unserer Zeit 39, no. 4 (August 2009): 232–33. http://dx.doi.org/10.1002/biuz.200990054.
Full textCastellanos Suárez, Viviana. "Impacto en la parentalidad en hombres abusados en su infancia." Horizonte Sanitario 19, no. 3 (September 23, 2020): 341–53. http://dx.doi.org/10.19136/hs.a19n3.3686.
Full textRittinger, O. "Crigler-Najjar Syndrom Typ I infolge segmentaler paternaler Isodisomie 2." Monatsschrift Kinderheilkunde 154, no. 5 (May 2006): 464. http://dx.doi.org/10.1007/s00112-006-1347-y.
Full textRuiz Pérez, Blanca Magdalena. "Tres fotógrafos latinoamericanos y la imagen del padre. La resignificación afectiva del álbum familiar." Arte e Investigación, no. 14 (November 29, 2018): e010. http://dx.doi.org/10.24215/24691488e010.
Full textHoga, Luiza Akiko Komura, and Luciana Magnoni Reberte. "Vivencias de la paternidad en la adolescencia en una comunidad brasileña de baja renta." Revista da Escola de Enfermagem da USP 43, no. 1 (March 2009): 110–16. http://dx.doi.org/10.1590/s0080-62342009000100014.
Full textAcosta Tobón, Sergio Andrés, Samuel Colorado Muñoz, Sara Tahia Eusse Gallego, and Jorge Mauricio Cuartas Arias. "Calidad del apego percibido hacia la figura paterna, materna y pares en adolescentes infractores." Revista de Psicología Universidad de Antioquia 12, no. 2 (May 24, 2021): e346173. http://dx.doi.org/10.17533/udea.rp.e346173.
Full textIzquierdo E., Lorena, and Nelson Zicavo M. "Nuevos padres: construcción del rol paternal en hombres que participan activamente en la crianza de los hijos." Revista de Investigación en Psicología 18, no. 2 (June 22, 2016): 33. http://dx.doi.org/10.15381/rinvp.v18i2.12082.
Full textDissertations / Theses on the topic "Paternagem"
Abade, Flavia. "Famílias patrifocais: paternagem e socialização dos filhos." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/59/59137/tde-13052014-113027/.
Full textThe family institution has different arrangements according to the social context and the historical moment. Changes in family composition and in its internal relations were induced by many factors, including the Government action, which manifests itself, for example, in the decision on the custody of children after the separation. The judicial system has been favoring unilateral custody, granted mostly to mothers, but that goes through transformations, when is granted to the father. This study aims to inquire the forms of organization and living in lowincome patrifocal families, in which the father, separated/divorced of wife and without her company, lives with the child he had with her and is responsible for care and his socializing. Seeks to investigate the relationship of the father with the child, such as holding the care, arrange household tasks and reconciles with his occupational activities and with his personal and affective life. Data collection was done through interviews with screenplay semistructured recorded and transcribed in their entirety, with seven fathers who live with children without the presence of the mothers. For the identification of the subjects used the network of researchers personal relationships and have been adopted all necessary ethical procedures. After the transcription of interviews, have been done analysis of the data collected. Among the main results, one can mention the fathers interviewed reported that they believed to be skilful to take care children than the mothers, so they stayed with the children after the end of the conjugal relationship. Some asked the custody at the judicial system and other fathers did not. In patrifocal families, there is involvement of women of the extended family and the oldest daughters in child-care. However, this study finds the active presence of fathers in child-care and others domestic tasks, concluding that the absence of mothers in the house imposes on fathers greater involvement in domestic life, changing the identity and subjectivity of man/father.
Araújo, Rita de Cássia Finamore. "A síndrome de down numa perspectiva da paternagem." Universidade Federal de Viçosa, 2002. http://www.locus.ufv.br/handle/123456789/9185.
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O nascimento de uma criança portadora de deficiência traz modificações em toda dinâmica familiar, pedindo respostas rápidas por parte dos familiares, que ficam surpresos com a situação e nem sempre se mostram preparados para enfrenta-lá. Nota-se, em geral, que os pais têm mais dificuldade do que as mães no ajustamento a essa realidade e no compartilhamento dos cuidados com o filho. Segundo NOLASCO (1995), a concepção de um filho marca para um homem o contato com um mundo desconhecido. Os homens irão se defrontar com uma gama de sentimentos e emoções contraditórios. Para esse autor, o vínculo mãe- filho não é impenetrável, e, para se fazer presente, o pai deve acompanhar a gestação e as transformações do corpo da mulher, numa atitude de compromisso e entrega diante do processo de espera do filho. Segundo LEFÉVRE (1981), a Síndrome de Down (SD) é uma das síndromes genéticas mais conhecidas, possui sinais físicos característicos e é uma das causas mais comuns de retardo mental. A SD afeta uma em cada 600 crianças nascidas vivas, independentemente de raça, sexo ou local de nascimento. Este estudo teve como objetivos principais identificar, do ponto de vista dos pais, os impactos ocorridos na dinâmica familiar que se seguiram desde o nascimento do filho portador de SD até os dias atuais, bem como as adaptações sofridas por esses pais; e caracterizar as fases que estes atravessam em seus processos de adaptação segundo as categorias propostas por MILLER (1995) e compará-las àquelas referentes ao comportamento materno. Após estudo com cinco mães de crianças com necessidades especiais, MILLER (1995) verificou que, após constatarem que o filho recém-nascido é portador de deficiência, as mães passam por quatro fases de adaptação, que são assim denominadas pela referida autora: sobrevivência, busca, ajustamento e separação. Entrevistaram-se três pais de adolescentes com SD que estudam na APAE de Viçosa. A metodologia utilizada foi o estudo de caso, cujos dados foram coletados por meio de entrevista semi-estruturada e análise interpretativa dos dados. Chegou-se às seguintes conclusões: pelos dados analisados, pôde-se observar que atitudes e sentimentos do pai são bem parecidos com os da mãe em relação ao filho portador de deficiência. Notou-se, porém, uma dificuldade na exposição dos sentimentos por parte dos pais. A análise dos depoimentos permitiu constatar que os pais passam pelas mesmas fases de adaptação apontadas por MILLER(1995). Na fase de sobrevivência há reações ao impacto da notícia de que o filho é portador de deficiência; na fase da busca ocorrem reformulações pessoais internas (mudanças de valores, nova consciência sobre o portador de deficiência) e procura por recursos externos (profissionais, literatura, outros pais). Toma-se consciência do preconceito que existe na sociedade. Na fase do ajustamento, os pais já têm mais controle da situação e mais equilíbrio e tomam atitude mais racionais. Na fase da separação começam a viabilizar a independência do filho, que deve ser tanto física como emocional. Os pais parecem trazer internalizado o modelo dominante de família cujas mães devem ser responsáveis pelo cuidado dos filhos e, os pais, pela provisão material. Entretanto, os pais mostraram avanços dentro desse modelo, buscando maior contato com os filhos e demonstrando mais afetividade.
The birth of a handicapped child changes the dynamic structure of a family completely and challenges family members to a quick response to the situation. Not in every case are people prepared for such a surprise. Generally speaking, fathers are somewhat less readily adjusted to the new situation than mothers and find problems in getting used to the new reality that demands of them their share of chores in care for their child. According to NOLASCO (1995), a man finds himself in contact with an unknown world at conception. This author states that the mother-child binding is not exclusive, and that the father needs to be present, accompanying the phases of the gestation period and the transformations of the mother’s body in an attitude of steady companionship and dedication during this process of waiting for the child. According to LEFÉVRE (1981), the Down Syndrome is one of the most widely known genetic syndromes with characteristic physical signs and is also one of the most frequent causes for mental retardation. One in 600 live born babies carry the DS, independently of race, sex or place of birth. The main objectives of this study were a), to identify the impacts on family dynamics from the birth of a child with a DS until the present from the fathers’ point of view, and the changes these fathers suffered b), to characterize the adaptation stages fathers went through, based on categories suggested by MILLER (1995), comparing them to those that refer to the mother’s behavior. MILLER (1995) pointed out that mothers go through four stages of adaptation once they fully understood that their newly born child is handicapped. In her study she studied the case of five mothers of children with special needs, and characterized the stages: survival, search, adjusting, and separation. In our study, three fathers of teenagers with DS that go to the APAE (Deseable of Parents and Friends of Exceptional) school have been interviewed. The applied methodology was the case study, collecting data by interviews and interpretive analysis of the obtained data. The following conclusions were drawn: the analyzed data show that the attitudes and feelings of fathers are quite similar to those of the mothers in relation to the handicapped child. There was, however, a notable difficulty for fathers to express these feelings. The evidence analysis allowed the conclusion that fathers go through the same adaptation phases pointed out by MILLER (1995). During the survival stage there are reactions caused by the impact of the news that the child is handicapped; during the search stage, internal personal changes occur (changes of values, a new consciousness in relation to handicapped people) and the search for help in external sources (professionals, literature, other concerned parents). He realizes the existence of prejudices in society. In the adjustment stage, parents have acquired a better control of the situation and present more balanced and rational attitudes. In the separation stage they begin to aim at the child’s independence, necessary in physical and emotional respect. It seems that fathers carry a dominant family model inside them in which the mother must carry the responsibility for the care of the children and fathers earn the family’s living. Still, fathers were proceeding in this model as they tried to be closer to their children and express more affection.
Dissertação importada do Alexandria
de, Souza e. Silva Dantas Fabiana. "Adoção tardia : produção de sentido acerca da maternagem, paternagem e filiação." Universidade Federal de Pernambuco, 2009. https://repositorio.ufpe.br/handle/123456789/8150.
Full textConselho Nacional de Desenvolvimento Científico e Tecnológico
Esta pesquisa teve por objetivo investigar a produção de sentidos entre pais e filhos adotivos sobre a maternagem, paternagem e filiação, com ênfase no estudo da linguagem na perspectiva Sócio-Histórica de Vygotsky e Enunciativo-Discursiva. Participaram deste estudo três famílias, tendo cada uma delas uma configuração familiar diferente (monoparental, biparental e homoafetiva), cujos filhos adotados tardiamente pertenciam à faixa etária de 5 a 10 anos. O método de estudo foi baseado em entrevistas videografadas que se subdividiram em três momentos: Primeiros os pais realizaram a leitura do livro Bebê do Coração para os filhos, em seguida pais e filhos conversaram sobre o texto lido e, por último, contaram a história da adoção vivenciada por eles. A análise dos discursos produzidos se baseou na busca dos núcleos de significação proposta por Aguiar, em que os conteúdos semelhantes, complementares e contraditórios dos discursos são articulados entre si permitindo uma análise mais consistente dos sentidos e significados. A partir da entrevista realizada com a família monoparental foi observado que o luto não elaborado pela morte da mãe biológica da criança adotiva desempenhou um papel marcante para produção de sentidos, pois os envolvidos na prática adotiva desempenham a maternagem e filiação cumprindo os papéis relacionados ao ser mãe e filho, mas não se posicionam enquanto tal. Os lutos não feitos durante a adoção dificultam o processo de tornar-se mãe e filho, bem como, uma maior atualização dos sentidos acerca deste tipo de parentalidade. Em relação aos sentidos produzidos pela família homoafetiva, a paternagem para estes pais adotivos, é assumir o papel e o posicionamento de pai dentro de casa, mas sempre que necessário eles assumem o papel de mãe. Os papéis de pai e mãe são percebidos como sendo complementares e importantes para resguardar o desenvolvimento físico e afetivo dos filhos. Por outro lado, o sentido de filiação produzido pelas crianças adotadas por este casal homoafetivo é de que ser adotivo significa ser escolhido e amado. E finalmente, os sentidos produzidos pela família biparental demonstraram que a maternagem é orientada pela falta de um referencial biológico da criança adotiva em relação aos seus genitores, o que constitui um obstáculo para compreensão das dificuldades apresentadas por esta criança. A prática da maternagem é significada como sendo mais intensa em relação à paternagem, no sentido de que a mãe participa ativamente da educação dos filhos enquanto a paternagem é praticada tendo em vista as funções de provedor do sustento familiar e promoção de atividades de lazer para a família. Ser filho adotivo significa ter sido rejeitado no passado pelos pais biológicos, fato este que é difícil de ser lembrado e falado. De modo geral, o tipo de configuração familiar (monoparental, biparental e homoafetiva) orienta os sentidos produzidos acerca da maternagem, paternagem e filiação adotiva, interferindo nos processos de subjetivação dos envolvidos
Rowe, G. "Omnis spes futura paternae stationis : public responses to the Roman imperial succession." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361863.
Full textEggebrecht, Julius Caspar [Verfasser], and Axel [Akademischer Betreuer] Krug. "Hohes paternales Alter als Risikofaktor für Autismus-Spektrum-Störungen des Nachwuchses: Effekte auf Lern-/Umlernverhalten und Hippocampusmorphologie im Tiermodell der Ratte / Julius Caspar Eggebrecht ; Betreuer: Axel Krug." Marburg : Philipps-Universität Marburg, 2017. http://d-nb.info/1148649786/34.
Full textDelgado, Becerra Orozimba Iris 1958. "Protección a la maternidad en Chile : efectividad y equidad en el acceso : Evaluación de la Ley 20.545 del año 2011." Doctoral thesis, Universitat Pompeu Fabra, 2019. http://hdl.handle.net/10803/666295.
Full textReconciling maternity and work-life balance, and advancing gender equity, are topics of growing global interest, that are generating innovative policies, however, we barely know their impact. Internationally, maternal protection policies have been poorly evaluated, both in terms of their effectiveness and - moreover - their equity. Chile enacted Law 20,545 on Maternity Protection in 2011, with the objective of increasing access and equity in maternity protection for women who work for pay. This thesis develops an original empirical evaluation and an innovative methodological proposal that evaluates the results of this important public policy, in a country with profound social inequalities. Main results of this analysis show that there has been progress in access to care, but not in equity of benefits to every working woman. To achieve substantial advance in equitable access to maternity protection, new policies should be made that reduce requirements to access maternity protection benefits to include more women with informal employment.
García, Rocío Consuelo Quiñones. "As competências parentais no mundo contemporâneo como fator de proteção no desenvolvimento humano: um desafio para pais e profissionais." reponame:Repositório Institucional da FURG, 2006. http://repositorio.furg.br/handle/1/2869.
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Nos últimos tempos, são cada vez mais freqüentes as queixas dos pais em relação à educação de seus filhos, mais especificamente, com a tarefa de colocar limites no comportamento das crianças e dos adolescentes, as quais são experimentadas em todas as classes sociais, sem distinção de raça, religião ou nível educacional. Esta dificuldade faz parte do quotidiano da família contemporânea e, possivelmente, está associada às rápidas transformações socioculturais que vêm ocorrendo, nos últimos tempos. Este estudo tem como objetivo problematizar com os pais o exercício das competências parentais, especialmente no que tange a colocar limites no comportamento dos seus filhos. Seu desenvolvimento foi orientado pela teoria bio-ecológica do desenvolvimento humano, na qual os processos proximais vivenciados em diferentes níveis do contexto de vida das pessoas são considerados fundamentais para a aquisição das competências a cada etapa do seu desenvolvimento. Metodologia É um estudo exploratório descritivo, de natureza qualitativa, desenvolvido no período entre março e dezembro de 2005, em um Ambulatório de Enfermagem em Saúde Mental, localizado na região sul do Brasil. Cinco famílias representadas pelas mães participaram deste estudo cujos dados foram coletados ao longo de dez encontros individuais e cinco coletivos. Todos os encontros foram gravados e após transcritos e as informações complementadas com o diário de campo. Os dados foram submetidos à análise de conteúdo na modalidade de análise temática. Os resultados mostram três categorias: o retrato do quotidiano, que se refere a dificuldade dos pais de colocar limites, tal qual é vivenciada no quotidiano das famílias; a rede de suporte social e as forças da família. As categorias englobam alguns dos fatores prioritários associados com a dificuldade experimentada pelas famílias. Dentre essas, as interações entre pais e filhos; a fragilidade das relações hierárquicas no grupo familiar; os recursos sociais e próprios com que às famílias contam, segundo o ponto de vista das mães. Conclusões. O estudo reafirma a influencia dos valores contemporâneos nas relações familiares e a importância da rede de suporte social informal das famílias. As fortalezas das famílias se convertem em alicerce para o exercício das competências parentais. Esses resultados são discutidos no contexto do trabalho de enfermagem em saúde mental, desenvolvido no ambulatório onde o estudo foi realizado.
These days, complaints parents make about their children education are getting more frequent, specifically, about the task of imposing limits on children’s and adolescents’ behavior. These difficulties are experienced in all social classes, regardless of race, religion, and educational level. Besides, as part of a contemporary family’s everyday life, these hardships may be associated with the fastsocio-cultural changes we are currently going through. This study aims at problematizing the exercise of parental competences with parents, especially the limits they impose on their children’s behavior. The development of this study was oriented by the bio-ecological theory of human development in which proximal processes experienced by people in different levels of life context are considered fundamental to acquire competences at each phase of the development. Methodology: It is an exploratory and descriptive study, qualitative in nature, which was developed from March to December 2005 in a Health Center that focuses on Nursing in Mental Health in the south of Brazil. Five families, represented by the mothers, took part in this study; data were collected in ten individual meetings and five collective ones. All meetings were recorded and transcribed; my diary also complemented the information. Data were submitted to content analysis in the mode of thematic analysis. Results show, three categories: portraiture of continuous days that refers the difficulty of imposing limits in the way it is experienced by the families in their everyday life. The categories include some of the factors primarily associated with this difficulty experienced by the families; the net of informal social support and family strength. These categories include the communication among parents and children; the fragility of hierarchical relations in the family group; the social and theirs owns resources that families can count on, according to the mothers’ points of view. Conclusions: This study re-states the influence of contemporary values in family relations and the importance of the net of informal social support the families have. Family strength becomes a basis for the exercise of parental competence. These results are discussed in the context of the work in Nursing in mental health, which is developed in the health center where this study was carried out.
En los últimos tiempos, son cada vez más frecuentes las quejas de los padres en relación a la educación de sus hijos, mas específicamente, con la tarea de colocar limites en el comportamiento de niños y adolescentes, las cuales son experimentadas en todas las clases sociles, sen distinción de raza, religión o nivel educacional. Esta dificultad hace parte del cotidiano de la familia contemporánea y posiblemente está asociada a las rápidas transformaciones socioculturales que vienen ocurriendo en los últimos tiempos. Este estudio tiene como objetivo problematizar con los padres el ejercicio de sus competencias, especialmente en relación a colocar limites en el comportamiento de sus hijos. Su desenvolvimiento fue orientado por la teoría bio-ecológica del desarrollo humano en la cual los procesos proximales vivenciados en diferentes niveles del contexto de las personas, son considerados fundamentales para la adquisición de las competencias, en cada etapa del desarrollo. Metodología. Es un estudio exploratorio descriptivo, de naturaleza cualitativa, desenvuelto en el período de marzo a diciembre de 2005, en un Ambulatorio de Enfermería en Salud Mental, localizado en la región sur del Brasil. Cinco familias representadas por las madres participaron de este estudio cuyos datos fueron colectados al longo de cinco encuentros colectivos y diez individuales. Todos los encuentros fueron gravados y después transcriptos, complementando las informaciones con el diario de campo. Los datos fueron sometidos a análisis de contenido en la modalidad de análisis temática. Los resultados muestran tres categorías: retrato del cotidiano familiar; que se refiere a dificultad de colocar limites tal cual como es vivida en el día a día de las familias; a red de soporte social y las fuerzas de las familias. Las categorías abarcan algunos de los factores prioritarios asociados con esta dificultad experimentada por las familias. Dentro de estos, las interacciones entre padres e hijos; la fragilidad de las relaciones jerárquicas en el grupo familiar; y los recursos sociales con que as familias cuentan, según el punto de vista de las madres. Conclusiones. El estudio reafirma la influencia de los valores contemporáneos en las relaciones familiares y la importancia de una red de soporte informal de las familias. Las fuerzas de las familias se convierten en la base para el ejercicio de las competencias de los padres. Estos resultados son discutidos en el contexto de trabajo de enfermería en salud mental, desenvuelto en el ambulatorio donde el estudio fue realizado.
Widdig, Anja. "Paternal kinship among adult female rhesus macaques (Macaca mulatta)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2003. http://dx.doi.org/10.18452/14830.
Full textThe impact of maternal kinship on social behaviour has been studied in detail for many primate species, but it is difficult to assess the importance of kin selection in shaping the evolution of social behaviour when studies are limited to maternal kin, completely ignoring paternal kinship. This thesis aimed to investigate the extent of paternal kinship and its impact on the social relationships among adult females in one group of free-ranging rhesus macaques (Macaca mulatta) living on the island of Cayo Santiago. The main findings can be summarised as follows: Firstly, in order to access the extent of paternal kinship, paternity has been analysed for all infants of the study group born between 1993 and 1998. Results revealed that male reproduction was highly skewed over the study period as few males have sired a high number of offspring, but the majority of potential sires have sired no or few offspring. This created a kinship structure in which nearly all animals born during the study period had at least one paternal half-sibling in close age proximity, i.e., either of the same age (74%) or within a two-year age difference of themselves (15%). Assuming that male reproductive success is also skewed in other primate species, then the importance of paternal kinship in primate societies should be re-emphasised. One of the most important consequences of male reproductive skew is that many individuals will have more paternal than maternal half-siblings during their life time. Secondly, in order to access the impact of paternal kinship on the social relationships among adult females, focal data on affiliation and aggression have been collected on 34 adult females with respect to their social partners who were either their maternal half-sisters, paternal half-sisters or unrelated females. The present study confirmed that the closest affiliative relationships characterise maternal half-sisters. Probably the most important result of this study was the finding that adult females were significantly more affiliative with their paternal half-sisters than with their non-kin. The recognition of paternal sisters was more pronounced among females of the same age than among females of different age, with a decrease in affiliation as the exact age difference (measured in years) increased among paternal half-sisters. This indicates that age proximity had an additional regulatory effect upon affiliative behaviour. However, evidence for paternal kin discrimination was only found with respect to affiliation, but not with respect to dyadic aggression suggesting context-dependent kin discrimination. Thirdly, when more kin categories were included in the analysis, adult females showed a strong bias towards maternal kin in comparison to paternal kin. This bias towards maternal kin when the degree of relatedness was held constantly suggests, that maternal kinship had a larger impact on the social relationships among adult female rhesus macaques than paternal kinship at least in the study group. Both affiliation and aggression declined with decreasing degrees of relatedness, but distant kin still differentiated each other from non-kin contradicting the existence of a relatedness threshold. Fourthly, paternal kinship was finally investigated with respect to coalition formation. A coalition is formed when an individual intervenes in an ongoing conflict between two opponents in order to support one party against the other. Female rhesus macaques intervened most often on behalf of their maternal half-sisters. In addition, unrelated female peers supported each other more often than unrelated female non-peers. Females did not support their paternal half-sisters more often than non-kin, but data may indicate indirect evidence for paternal kin discrimination as females tended to target their paternal half-sisters less often than non-kin. This finding might be due to the fact, that paternal half-sisters can be very different in rank, while maternal half-sisters are of adjacent rank, implying that a low-ranking female cannot provide actual help to her paternal half-sisters, as she may risk a higher probability of retaliation when intervening in a conflict between two higher-ranking opponents. As a compromise, females may instead avoid to target their paternal half-sisters, suggesting that constraints to an individuals own competitive ability play an important role in coalition formation. Maternal and paternal half-sisters showed a stronger trend in reciprocity and interchange than non-kin and also provided a higher proportion of costly interventions towards each other. Finally, the results of the present study strongly suggest that familiarity among individuals can arise through association in early development by at least two alternatives: (i) mothers mediating familiarity among their offspring (which are maternal half-siblings) caused by the close mother-offspring relationship during lactation and (ii) age proximity is mediating familiarity among age mates (including both paternal related and unrelated peers) as peers go through important life history stages such as infancy, menarche, pregnancy or motherhood at similar times while females of different age do not. In any case, paternal half-siblings additionally need a mechanism such as phenotype matching to discriminate paternal half-siblings from non-kin even within their peer group.
Uusi-Heikkilae, Silva. "Body size, reproduction and size-selective harvesting." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2012. http://dx.doi.org/10.18452/16577.
Full textBody size is a fundamentally important trait for fitness in many animal species because it correlates positively with survival and reproductive success. In many fish species, large females exhibit higher fecundity and produce higher quality offspring compared to small females. Similarly, male body size can affect offspring quality and early life-history traits but the importance of these effects to the reproductive biology of fish is poorly studied. The extent to which variation in reproductive success is explained by parental body size is an important research topic because size-selective fishing usually reduces the average size of reproducing adults in a population. In my dissertation, I studied the parental size effects on reproductive success in a model species (zebrafish, Danio rerio). I also studied the effects of size-selective harvesting on body size, maturation and reproductive output. Body size and condition factor were important determinants of the initiation of maturation in zebrafish. Large females were found to have higher reproductive success compared to small females and a significant effect of male body size on early life-history traits was documented. I found that large males were also favored by the females resulting to differential allocation of reproductive resources toward large males. The maternal- and paternal-size effects ultimately led to elevated reproductive success of experimental spawning stocks consisting of large or random-sized individuals compared to spawning stocks consisting of small individuals. Size-selective harvesting induced rapid phenotypic and genetic changes, which persisted after selection was halted. This suggests that fishing-induced changes might be hard to reverse. My results emphasize the importance of body size to the reproductive biology of zebrafish and suggest that protecting large fish might be important to maintain the reproductive potential of exploited fish stocks.
Lamatsch, Dunja. "Molekulargenetische und zytogenetische Untersuchungen zur paternalen Introgression beim gynogenetischen Amazonenkärpfling, Poecilia formosa." Doctoral thesis, 2001. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-108.
Full textOne of the greatest challenges in evolutionary biology is explaining the widespread occurrence of sexual reproduction and the associated process of genetic recombination. Comparing the advantages and disadvantages of sexual and asexual reproduction is expected to give major insights to that "queen of questions". Whereas asexual females have the short term advantage of producing twice as many daughters as sexual females, they are also expected to suffer from long-term constraints: Due to the absence of genetic recombination, asexuals are prone to accumulate deleterious mutations (Muller´s ratchet), and adaptation to changing environments or the escape from parasite load will be aggravated. The Amazon molly, P. formosa, resembles an organism which shows an alternative reproductive mode to the ubiquitous bisexual reproduction. Being an all-female species due to interspecific hybridization, it reproduces gynogenetically: Unreduced diploid eggs are only activated by sperm of males of closely related sympatric species. Without karyogamy the oocytes develop parthenogenetically leading to genetically identical (clonal) offspring. Molecular phylogenetic data suggest that P. formosa might have survived longer than predicted by Muller´s ratchet. To explain this paradox, two phenomena which have been observed in natural populations as well as in laboratory broods are taken into consideration: Triploidy and occurrence of microchromosomes as a consequence of paternal introgression. Triploidy results from the successful insemination of the unreduced diploid eggs with haploid host sperm and subsequent karyogamy, whereas microchromosomes are small supernumerary chromosomes that seem to be the left over of the enzymatic machinery which normally clears the egg from the sperm nucleus after activation has occurred. Both forms of paternal introgression may also occur in combination. Surprisingly, these individuals developed spontaneously into males. The results on paternal introgression obtained here can contribute to answer the question why P. formosa as well as other unisexual vertebrates survived longer than predicted. Contradictory to common knowledge, gynogenesis might not be an imperfect parthenogenesis but a well adapted reproductive mode combining the advantages of asexual and sexual reproduction
Books on the topic "Paternagem"
Die Unsicherheit der Väter: Zur Herausbildung paternaler Bindungen. Berlin: Trafo, 2009.
Find full textA fine young man: What parents, mentors, and educators can do to shape adolescent boys into exceptional men. New York: Jeremy P. Tarcher/Putnam, 1998.
Find full textGurian, Michael. Un buen muchacho: Lo que padres y educadores pueden hacer para transformar adolescentes en hombres excepcionales. México, D.F: Diana, 2002.
Find full textCómo lidiar con los 7 problemas mayores de sus hijos: Mentir, hacer trampa, robar, actividad sexual, drogas y alcohol, suicidio, violencia. México, D.F: Panorama, 2007.
Find full textGurian, Michael. A Fine Young Man: What Parents, Mentors, and Educators Can Do to Shape Adolescent Boys into Exceptional Men. Tarcher, 1999.
Find full textConference papers on the topic "Paternagem"
Herden, R., and C. Eberle. "Paternale Einflussfaktoren auf das Diabetes-Risiko der Nachkommen." In Diabetes Kongress 2018 – 53. Jahrestagung der DDG. Georg Thieme Verlag KG, 2018. http://dx.doi.org/10.1055/s-0038-1641924.
Full textEberle, C., and M. Kirchner. "Paternale Programmierung: Präkonzeptionelle Risikofaktor in Bezug auf das Diabetes-Risiko der Nachkommen." In Diabetes Kongress 2019 – 54. Jahrestagung der DDG. Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1688273.
Full textRogenhofer, N., A. Markoff, X. Ennerst, N. Bogdanova, and CJ Thaler. "Maternale sowie paternale M2/Annexin-A5 Trägerschaft als Risikofaktor für rezidivierendes Implntationsversagen (RIF)." In Kongressabstracts zur Tagung 2020 der Deutschen Gesellschaft für Gynäkologie und Geburtshilfe (DGGG). © 2020. Thieme. All rights reserved., 2020. http://dx.doi.org/10.1055/s-0040-1717691.
Full textHobbiebrunken, E., H. Lorenz, A. Abicht, EMC Schwaibold, A. Hell, and E. Willichowski. "Talus vertikalis bei einem Kind mit kongenitalem myasthenen Syndrom und homozygoter CHRNE-Mutation auf Chromosom 17 durch paternale uniparentale Isodisomie." In 24. Kongress des Medizinisch-Wissenschaftlichen Beirates der Deutschen Gesellschaft für Muskelkranke (DGM) e.V. Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1685108.
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