This dissertation looks at the position of the unmarried father in South Africa with regard to obtaining access to his illegitimate child. The writer has focused on three distinct eras in South African family law: the position of unmarried fathers in terms of: the common law; Natural Fathers of Children Born out of Wedlock Act; and the Children's Act. The writer has further focused on a case study. This is to emphasis the difficulty which unmarried fathers have when attempting to go through the courts to have access to his child. In terms of South African common law, fathers of illegitimate children did not have any form of parental authority over the child. The mothers of illegitimate children have full parental authority over such children. Access in terms of South African common-law is seen as an incident of parental authority. Unmarried fathers nevertheless had the right to approach the high court to obtain access to their children, if the mother of the child refuses to allow the father to have such access. In the late 1980's and early 1990's, there was an overwhelming amount of applications brought by unmarried fathers in the high courts so as to obtain access to their illegitimate children. The case of Van Erk v Holmer 1992 (2) SA 636 (W) sparked victory for unmarried fathers when the learned judge held that all unmarried fathers of children have an inherent right of access to their children. This victory was short-lived. Subsequent case law and in particular the case of B v S 1995 (3) SA 571 (A) enforced the common law and held that unmarried fathers do not have an automatic right to their illegitimate children and that such fathers will have to apply to the high court for such access. Due to the increase in litigation in the late 1980's and early 1990's regarding a father's access to his child born out of wedlock the Natural Fathers of Children Born out of Wedlock Act commenced on 4 September 1998. The South African legislature adopted the approach taken in the case of B v S 1995 (3) SA 571 (A) and rejected the approach taken in the case of Van Erk v Holmer 1992 (2) SA 636 (W) ie the common law continued to remain the approach taken in South Africa. Legislators recognised that the approach taken in the Natural Fathers of Children Born out of Wedlock Act does not conform to the provisions of the African Charter of the Rights and the Welfare of the Child, the United Nations Convention on the Rights of the Child and equality and dignity provisions of the Constitution of the Republic of South Africa. On 19 June 2006, the Children's Act was effected and will commence once promulgated in the Government Gazette. The writer then determines whether the Children's Act has in practice changed the position of the unmarried father. / JURISPRUDENCE / LLM

Text in Afrikaans, abstract in English / Writer investigates the constitutionality of section 18(4)(d) of the Child Care Act 74 of 1983 against the backdrop of the South African common law and the common law of comparative legal systems. In the South Africa law the mother of an illegitimate child has guardianship. The natural father does not have parental power which weakens his legal position. In analysing the judgement of the Constitutional Court, writer criticises the court for stating that in the case of a newborn baby the kind of discrimination which section 18( 4 )( d) authorises against a natural father may be justifiable in the initial period after the child is born. The constitutional position of the natural father in American jurisprudence is discussed at length. Writer concludes that the natural father has to take positive steps to vest a right to be heard in an adoption application. Proposals for legal reform are also made. / Private Law / LL. M. (Law)

Erst recht spät, durch Impulse der internationalen Forschung in den 1980er Jahren, etablierte sich in den deutschsprachigen Ländern ab den 1990er Jahren eine Männlichkeitsforschung innerhalb der Soziologie. Besonders wirkmächtig wurde dabei Connells Konzept der hegemonialen Männlichkeit. Männlichkeit wird hierbei als plural und variabel theoretisiert und konsequent mit einem Macht- und Herrschaftskonzept verbunden. Die Männlichkeitssoziologie thematisiert unter anderem (Prekarisierung der) Erwerbsarbeit, Sozialisation, Gewalt, Familie und Reproduktion aber auch neuere Felder der Geschlechtersoziologie wie Heteronormativität, Migration oder Körper.

No description available.

Postcopulatory sexual selection—sperm competition and cryptic female choice—has become a major area of research over the past 40 years. Within this field there are many outstanding questions at every level of analysis, from proximate to ultimate. The fitness consequences for both sexes in the period after copulation and before fertilization are considerable, but are obscured within the female reproductive tract. Our understanding of postcopulatory mechanisms is especially sparse in taxa other than birds and insects. Nearly nothing is known in reptiles except that multiple paternity is common and widespread, and often results from long-term sperm storage across breeding seasons. We present some of the very first data on the determinants of fertilization success in the context of sperm competition in reptiles, a group that accounts for 30% of terrestrial vertebrates. In the first chapter, "Asymmetric gametic isolation between two populations of red-sided garter snakes", we discuss the use of between-population crosses to reveal gametic isolation. The effect of population density and operational sex ratios on mating systems and the speciation process has fueled theoretical debate. We attempted to address these issues using two populations of red-sided garter snakes (Thamnophis sirtalis parietalis) from Manitoba, Canada. Our study populations differ markedly in their density mating aggregations, with a 10-fold difference between them. Using microsatellite markers for paternity analysis of litters produced from within and between population crosses. We found that the population with highest aggregation density, and presumably with the highest level of sexual conflict (i.e., when the evolutionary interests of the sexes differ) over mating, was also the population that exhibited homotypic sperm precedence. The less dense population showed a distinct postcopulatory male-size advantage. We also demonstrated that sperm stored within the female over hibernation can father 20-30% of offspring in a litter. In the second chapter, "Sperm competition and mate-order effects in red-sided garter snakes", we test whether females use mate-order effects to ensure that a larger (fitter) male will sire her offspring. Does that second male should have precedence in sperm competition? We tested for second-male precedence using singly-mated females that mated with a second male. Average proportion of paternity was shared equally among the first (P₁, i.e., proportion of offspring from a litter fathered by the first male to mate) and second males (P₂) to mate, and stored sperm (P[subscript ss]). This may be a case where last male precedence breaks down with more than two males. All females were spring virgins (they had not mated that spring, but may have stored sperm from fall matings); thus sperm stored presumably from fall matings is important in this system. As the interval between matings increased P₁ increased at the expense of P[subscript ss]. As the second male to mate's copulation duration increased, P₁ also increased at the expense of P₂. This last result may indicate female influence over sperm transfer during coerced matings. Copulatory plugs (CPs) are found in many taxa, but the functional significance is debated. Male garter snakes produce a gelatinous copulatory plug during mating that occludes the opening of the female reproductive tract for approximately two days. In chapter three, "Not just a chastity belt: the role of mating plugs in red-sided garter snakes revisited", we experimentally tested the role of the CPs. In snakes, sperm are produced in the testes and delivered through the ductus deferens, and the copulatory plug is thought to be produced by the sexual segment of the kidney and conveyed through the ureter. We manipulated the delivery of the two fluids separately by ligating the ducts. We confirmed that the CP is not formed in ureter-ligated males and that sperm leaks out immediately after copulation. The CP is analogous to a spermatophore. The protein matrix contains most of the sperm which are liberated as the plug dissolves within the female's vaginal pouch. One of the fundamental principles in sperm competition is that increased sperm numbers increase the odds of winning in competitions for fertilization success and males will adjust their ejaculate relative to competition and the quality of his mate. In chapter four, "Sperm depleted males and the unfortunate females who mate with them", we detect significant among-male variation in the number of sperm ejaculated, and that male mate-order reduces sperm numbers. Male sperm numbers drop significantly from one mating to the next, and this has implications for sperm competiveness, as Thamnophis sirtalis exhibits a disassociated reproductive tactic, in that sperm stores are produced outside the breeding season, and thus cannot be replenished after mating. Interestingly, however, the on average the mobility of the sperm increased for a male's second mating. Therefore, increased sperm quality may compensate for reduced numbers in a competitive context. Further, females increase their remating rate when mating with males that are unable to deliver sperm. In chapter five, "Sexual conflict during mating in red-sided garter snakes as evidenced by genital manipulation", we revisited the CP in the context of sexual conflict. Sex-differences in optimal copulation duration can be a source of conflict, as increased copulation duration may be advantageous for males as it delays female remating. Males of many species actively guard females to prevent them from remating, and in some cases males produce copulatory plugs to prevent remating. If precopulatory choice is limited at the time of her first mating, conflict may be especially onerous to a female. The size of the plug is influenced by the copulation duration. We experimentally tested the contribution of male and female control over copulation duration. We ablated the largest basal spine on the male's hemipene and found a reduction in copulation duration and an increase in the variation of plug mass. Further, we anesthetized the female's cloaca and found copulation duration increased, which suggests that males benefit from increased copulation duration while females actively try to reduce copulation duration. Therefore, sexual conflict is manifest in divergent copulation duration optima for males and females. / Graduation date: 2013

This dissertation looks at the position of the unmarried father in South Africa with regard to obtaining access to his illegitimate child. The writer has focused on three distinct eras in South African family law: the position of unmarried fathers in terms of: the common law; Natural Fathers of Children Born out of Wedlock Act; and the Children's Act. The writer has further focused on a case study. This is to emphasis the difficulty which unmarried fathers have when attempting to go through the courts to have access to his child. In terms of South African common law, fathers of illegitimate children did not have any form of parental authority over the child. The mothers of illegitimate children have full parental authority over such children. Access in terms of South African common-law is seen as an incident of parental authority. Unmarried fathers nevertheless had the right to approach the high court to obtain access to their children, if the mother of the child refuses to allow the father to have such access. In the late 1980's and early 1990's, there was an overwhelming amount of applications brought by unmarried fathers in the high courts so as to obtain access to their illegitimate children. The case of Van Erk v Holmer 1992 (2) SA 636 (W) sparked victory for unmarried fathers when the learned judge held that all unmarried fathers of children have an inherent right of access to their children. This victory was short-lived. Subsequent case law and in particular the case of B v S 1995 (3) SA 571 (A) enforced the common law and held that unmarried fathers do not have an automatic right to their illegitimate children and that such fathers will have to apply to the high court for such access. Due to the increase in litigation in the late 1980's and early 1990's regarding a father's access to his child born out of wedlock the Natural Fathers of Children Born out of Wedlock Act commenced on 4 September 1998. The South African legislature adopted the approach taken in the case of B v S 1995 (3) SA 571 (A) and rejected the approach taken in the case of Van Erk v Holmer 1992 (2) SA 636 (W) ie the common law continued to remain the approach taken in South Africa. Legislators recognised that the approach taken in the Natural Fathers of Children Born out of Wedlock Act does not conform to the provisions of the African Charter of the Rights and the Welfare of the Child, the United Nations Convention on the Rights of the Child and equality and dignity provisions of the Constitution of the Republic of South Africa. On 19 June 2006, the Children's Act was effected and will commence once promulgated in the Government Gazette. The writer then determines whether the Children's Act has in practice changed the position of the unmarried father. / JURISPRUDENCE / LLM

Text in Afrikaans, abstract in English / Writer investigates the constitutionality of section 18(4)(d) of the Child Care Act 74 of 1983 against the backdrop of the South African common law and the common law of comparative legal systems. In the South Africa law the mother of an illegitimate child has guardianship. The natural father does not have parental power which weakens his legal position. In analysing the judgement of the Constitutional Court, writer criticises the court for stating that in the case of a newborn baby the kind of discrimination which section 18( 4 )( d) authorises against a natural father may be justifiable in the initial period after the child is born. The constitutional position of the natural father in American jurisprudence is discussed at length. Writer concludes that the natural father has to take positive steps to vest a right to be heard in an adoption application. Proposals for legal reform are also made. / Private Law / LL. M. (Law)

No description available.

Made available in DSpace on 2016-06-02T20:20:30Z (GMT). No. of bitstreams: 1 3280.pdf: 5102569 bytes, checksum: f511b08e43998ea79e0f9b0ac5ed969b (MD5) Previous issue date: 2010-08-06 / Universidade Federal de Sao Carlos / Population genetic parameters and genetic relatedness estimates were carried out for Roseate Spoonbill (Platalea ajaja), Wood Stork (Mycteria americana) and Great Egret (Ardea alba egretta) reproductive colonies in Amapa, Pantanal and Rio Grande do Sul (RS), Brazil. Microsatellite genotypes were used to investigate kinship patterns between nestlings sampled inside the same nests, using a variety of analytical approaches. Unrelated nestling-pairs were observed in Roseate Spoonbill nests (6.12% of analyzed nests) and in Wood Stork nests (11.34%); half-siblings were present in Roseate Spoonbill nests as well (1.36%). Only full-siblings were detected inside Great Egret nests. Conspecific brood parasitism (CBP) and extra-pair paternity were proposed to account for the presence of unrelated nestmates and half-siblings, respectively, in Roseate Spoonbill and Wood Stork nests. Those results suggest the occurrence of a mating system different than genetic monogamy in natural populations of those waterbirds. Genetic relatedness was also investigated for adults and offspring, as well as for supposed siblings in Roseate Spoonbill families kept in three zoological facilities in the U.S. Paternity and maternity allocation analyses through maximum-likelihood revealed that errors were present in zoo‟s studbooks in relation to the familial records. We also identified mating between related individuals that were not detected previously by zookeepers. Population genetic parameters were also estimated and demographic processes were assessed for Great Egret reproductive colonies in the Pantanal and Rio Grande do Su, Brazil. Bayesian clustering analyses, assignment tests, analysis of molecular variance, F-statistics estimates, allelic frequency distribution and the G-W index revealed that: i) Pantanal reproductive colonies are genetically differentiated from Rio Grande do Sul colonies; ii) an IBD-like pattern alone cannot explain that differentiation; and iii) genetic signal of a reduction of population size was present for two colonies in the Pantanal and one in Rio Grande do Sul. Results were discussed considering a metapopulation dynamic and also considering that populations from both Brazilian regions represent distinct units and deserve to be treated separately when planning and carrying out conservation and management programs that aim to preserve the species‟ genetic diversity. / Estudos de genética de populações e de parentesco genético foram desenvolvidos em colhereiro (Platalea ajaja), cabeça-seca (Mycteria americana) e garça-branca-grande (Ardea alba egretta), de colônias reprodutivas do Amapá, Pantanal e Rio Grande do Sul (RS), Brasil. Genótipos em locos de microssatélites foram utilizados para se investigar os padrões de relacionamento entre ninhegos amostrados dentro dos mesmos ninhos com diferentes metodologias de análise. Pares de ninhegos não-relacionados foram encontrados nos ninhos de colhereiro (6,12% dos pares analisados) e de cabeça-seca (11,34%); meio-irmãos foram observados nos ninhos de colhereiro (1,36%). Em garça branca grande foi detectada apenas a presença de irmãos-completos dentro dos ninhos. Parasitismo de ninho intraespecífico e paternidade extra-par podem explicar a presença de ninhegos não-relacionados e meio-irmãos nos ninhos de colhereiro e cabeça-seca, o que indica a presença de um sistema de acasalamento diferente da monogamia genética nas populações naturais dessas espécies. Relações de parentesco entre adultos e filhotes e entre supostos irmãos foram determinadas em famílias de colhereiro de três zoológicos dos EUA. Análises de atribuição de maternidade e paternidade por máxima verossimilhança revelaram erros nos registros dos zoológicos quanto às relações progenitor-progênie e identificaram acasalamentos entre indivíduos aparentados que não tinham sido registrados. Parâmetros genético-populacionais e processos demográficos foram investigados em populações de garça-branca-grande do Pantanal e do Rio Grande do Sul. Análises Bayesianas, testes de alocação de indivíduos, análises de variância molecular, estimativa de estatísticas F, exame da distribuição das freqüências alélicas e cálculo do índice de G-W permitiram identificar que: i) há diferenciação genética significativa entre colônias reprodutivas do Pantanal e do Rio Grande do Sul; ii) o padrão de isolamento pela distância não explica essa diferenciação; e iii) duas populações no Pantanal e uma população no RS apresentaram sinais genéticos de redução demográfica. Os resultados foram discutidos considerando que as populações de garça-branca-grande localizadas no Pantanal e no Rio Grande do Sul são unidades populacionais independentes e devem se tratar separadamente no planejamento e desenvolvimento de programas de manejo para a conservação da diversidade genética total da espécie.

The United States is the only developed nation that fails to provide its citizens with paid parental leave. The lack of parental benefit provision operates to the detriment of individuals and society as a whole by contributing to inequity across gender, race, socioeconomic status, and sexual orientation. As the demographics of the American workforce have changed, public policy has not kept pace. Paid parental leave is associated a number of health, economic, and social benefits. However, the greatest barrier to legislating paid parental leave is the philosophical underpinnings of American politics, specifically the strong current of liberal individualism and absence of maternalism. This thesis examines the policy option space for paid parental leave in the United States and recommends a paid parental leave policy that is gender-neutral and has a combination of three months individual leave and three months of shared leave at 100 percent wage replacement.