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Search Results: 1 - 10 of 88035 matches for " Fernando Silva Teixeira-Filho "
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Idea es e tentativas de suicídio em adolescentes com práticas sexuais hetero e homoeróticas Suicide thoughts and attempts of suicide in adolescents with hetero and homoerotic sexual practices
Fernando Silva Teixeira-Filho,Carina Alexandra Rondini
Saúde e Sociedade , 2012, DOI: 10.1590/s0104-12902012000300011
Abstract: Esta pesquisa, que teve como popula o-alvo adolescentes com idade entre 12 e 20 anos, residentes em três municípios do interior Paulista, buscou conhecer as associa es entre orienta o sexual e idea es e tentativas de suicídio. Corroborando com as pesquisas internacionais, evidenciou-se que os n o heterossexuais têm mais chances de pensarem e tentarem suicídio, comparativamente aos heterossexuais. Todavia, encontrou-se que, dentre o grupo de adolescentes que se assumiram n o heterossexuais, os que est o mais vulneráveis s o aqueles que se autodefiniram bissexuais e "outros", os quais constituem o grupo de pessoas menos assumidas, dentre os n o heterossexuais. Do mesmo modo, constatou-se que os respondentes apresentam diversas opini es e valores homofóbicos, sexistas e heterocentrados, o que revela ser o espa o escolar, onde se encontram esses jovens n o heterossexuais, bastante carregado de posicionamentos discursivos discriminatórios. Conclui-se que a quest o do suicídio é uma problemática de saúde pública e que a popula o de jovens n o heterossexuais necessita de abordagens específicas para a preven o e de aten o relativas a essa conduta. This survey, which had as the target population adolescents aged between 12 and 20 years living in three municipalities in S o Paulo, sought to investigate the associations between sexual orientation and ideation and suicide attempts. Confirming international research findings, it is showed that non-heterosexuals are more likely to attempt and think about suicide, compared to heterosexuals. However, we found that among the group of teenagers who assumed to be non-heterosexuals, the most vulnerable are those who define themselves as bisexual and "other", which constitute the group of people less assumed, among non-heterosexuals. Similarly, it was found that the respondents have different homophobic, sexist and heterocentric opinions and values, which turn out to be the school environment, where these young non-heterosexual study, loaded with enough discriminatory discursive positions. We conclude that the issue of suicide is a public health problem and that the population of young non-heterosexual needs specific approaches for prevention and care in respect to this conduct.
Reflex?es sobre homofobia e educa??o em escolas do interior paulista
Teixeira-Filho, Fernando Silva;Rondini, Carina Alexandra;Bessa, Juliana Cristina;
Educa??o e Pesquisa , 2011, DOI: 10.1590/S1517-97022011000400004
Abstract: this is a survey conducted in 2009 with 2,282 students of both sexes enrolled in the three grades of high school in three cities of the west of sao paulo state (assis, presidente prudente and ourinhos). the data collection instrument was a self-administered and anonymous questionnaire with 131 questions. in this article, we reflect on how in schools the research participants reproduce and reinforce the hegemonic discourses of control of sexualities guided by the attempt to promote heterosexuality as the only form of sexual intelligibility, to the detriment of other forms of expression of sexuality. we discuss how homophobia and the devices of social control of sexuality (re) produce prejudices and stereotypies, resulting in vulnerabilities that non-heterosexual teenagers have, such as homophobic victimization, social and affective isolation, ideations and suicide attempts. the study shows that the invariant were discrimination, homophobic violence and the insults that are perpetrated in the values and discourses of adolescents at school and in their family, demonstrating the institutionalization of homophobia as a regulatory practice of the psychological and social construction of gender and sexual identities. we highlight how important it is for the school to appropriate the means of deconstruction of heterocentric normativity to preserve the rights and citizenship of the people who do not identify with the prevailing models of heterosexuality.
Relative feeding specialization may depress ontogenetic, seasonal, and sexual variations in diet: the endemic lizard Cnemidophorus littoralis (Teiidae)
Teixeira-Filho, P. F.;Rocha, C. F. D.;Ribas, S. C.;
Brazilian Journal of Biology , 2003, DOI: 10.1590/S1519-69842003000200017
Abstract: we investigated the feeding habits of the teiid lizard cnemidophorus littoralis in the markedly seasonal habitat of restinga da barra de maricá (22o57's, 43o50'w), rio de janeiro state, brazil, to evaluate to what extent its diet is ontogenetically, sexually, and/or seasonally conservative. lizard stomach contents were analyzed, identified, counted, estimated for volume (in mm3), and grouped in four classes (active, sedentary, and clumped preys, and plant material). the relative contribution of each food class to the total prey volume consumed by adult males and females and juveniles was compared in three ways: between juveniles and adults, sexes, and seasons (wet and dry). sexual dimorphism in head size was tested by comparing head width and jaw length using analysis of covariance (ancova). isopterans were the most important prey item, occurring in 93% of the lizard stomachs examined and corresponding to 96.4% of total prey content and 69.7% of total prey volume. they occurred in high frequencies in the stomachs of c. littoralis throughout all study months. we found no sexual, ontogenetic, or seasonal differences in c. littoralis diet although the sexes differed significantly in head width. we concluded that isopterans are the main item in the diet of c. littoralis in restinga da barra de maricá, both for juveniles and adults. the lack of seasonal, sexual, or ontogenetic variation in its diet results from the massive consumption of these insects. isopterans are small, occur in clumps, and are available year-round, and thus are an advantageous food item for the active forager c. littoralis. we also found sexual dimorphism in the head size of c. littoralis: males have wider heads than females. this dimorphism, however, does not seem to be related with the diet of the species, and is probably a result of sexual selection.
ECOMORPHOLOGICAL RELATIONSHIPS IN SIX LIZARD SPECIES OF RESTINGA DA BARRA DE MARICá, RIO DE JANEIRO, BRAZIL RELACIONES ECOMORFOLóGICAS EN SEIS ESPECIES DE LAGARTOS DE LA RESTINGA DE LA BARRA DE MARICá, RíO DE JANEIRO, BRASIL
Pedro Teixeira-Filho,Oscar Rocha-Barbosa,Viviane Paes,Sueli Carvalho Ribas
Revista chilena de anatomía , 2001,
Abstract: We studied some ecomorphological relationships in six lizard species (Ameiva ameiva, Cnemidophorus littoralis, Tropidurus torquatus, Liolaemus lutzae, Mabuya agilis and M. macrorhyncha) from Restinga de Barra de Maricá, RJ. These species have marked differences in microhabitat utilization and in foraging behavior, which vary from active to sit-and-wait . In this study, we compared the morphology of the fingers and claws of these lizards species with the different behaviors. The species that showed higher degree of arboreality (T. torquatus and M. macrorhyncha) had the 4th finger of the forelimb as the largest, while the other species had the 3rd. This seems to give some advantage for vertical sustains of the arboreal species. All species had the 4th finger as the largest of the hind limb. The two scincids (M. agilis and M. macrorhyncha) had more curved and shorter claws, which appears to aid in the climbing on the leaves of the bromeliad Neoregelia cruenta. In addition, the claws of the essentially ground-dwelling species were larger than in the other species, suggesting that larger claws give some advantage for support on sand (providing a better impulse and speed), in the excavation of burrows, in the defense against predators, in the dispute for foraging ranges and in mate selection. In this study, the foraging strategy does not seem to be related to the absolute size of the fingers of the lizards, but with relative differences in the fingers of the forelimbs Estudiamos algunas relaciones ecomorfológicas en seis especies de lagartos (Ameiva ameiva, Cnemidophorus littoralis, Tropidurus torquatus, Liolaemus lutzae, Mabuya agilis y M. macrorhyncha) de la Restinga de la Barra de Maricá, RJ. Estas especies poseen marcadas diferencias en la utilización del microhabitat y en el comportamiento en la búsqueda de alimento, que varía de activo a sienta-y-espera . Comparamos la morfología de los dedos y de las garras de especies de lagartos con estos comportamientos diferentes. Las especies que mostraron el grado más alto de arborealidad (T. torquatus e M. macrorhyncha) tenían el 4o dedo del miembro anterior como el más grande, y las otras especies tenían el 3o. Esto parece otorgarle una ventaja para la sustentación vertical de las especies arboreas. Todas las especies tenían el 4o dedo como el más grande del miembro posterior. Los dos scincídeos (M. agilis e M. macrorhyncha) tenían garras más cortas y curvas, que parecen ajudarle para la escalada de las hojas de la bromelia Neoregelia cruenta. Adicionalmente, las garras de las especies esencialmente terrícola
Structure of claws and toes of two tropidurid lizard species of Restinga from Southeastern Brazil: adaptations to the vertical use of the habitat Estructura de garras y dedos en dos lagartos tropidúridos de Restinga, sureste de Brasil: adaptaciones al uso vertical del hábitat
Sueli Carvalho Ribas,Ana Lucia Rosario Velloso,Pedro Teixeira-Filho,Oscar Rocha-Barbosa
Revista chilena de historia natural , 2004,
Abstract: Tropidurus torquatus and Liolaemus lutzae, found in a restinga habitat, show some morphological differences associated with differential microhabitats use. There were made measurements of the snout-vent length, length and width of the largest toe of hand and foot, and length, width, height and curvature of the claws. We counted the number of adhesive lamellae of the largest toe of each member. T. torquatus has larger toes, greater number of adhesive lamellae and higher and more curve claws than L. lutzae. No significant differences in toe and claw widths were found. These results suggest that the differences found in the morphology of toes and claws of these two species would be associated with the differential microhabitat use. T. torquatus has morphological adaptations that allow it to use the microhabitat both vertically or horizontally, while L. lutzae use it only horizontally Tropidurus torquatus y Liolaemus lutzae hallados en un hábitat de restinga, muestran algunas diferencias morfológicas asociadas a el uso diferencial de microhábitats. Se realizaron mediciones de la longitud "snout-vent", longitud y ancho del dedo mayor de la mano y el pie y, longitud, ancho, altura y curvatura de las garras. Se contó el número de lamelas adhesivas del dedo mayor de cada miembro. T. torquatus posee dedos más grandes, mayor número de lamelas adhesivas y garras más altas y curvadas que L. lutzae. No se hallaron diferencias significativas en los anchos de dedos y garras. Estos resultados sugieren que las diferencias encontradas en la morfología de dedos y garras de estas dos especies estarían asociadas con el uso diferencial del microhábitat. T. torquatus posee adaptaciones que le permiten utilizar el microhábitat tanto vertical como horizontalmente, mientras que L. lutzae solamente lo utiliza en forma horizontal
Relative feeding specialization may depress ontogenetic, seasonal, and sexual variations in diet: the endemic lizard Cnemidophorus littoralis (Teiidae)
Teixeira-Filho P. F.,Rocha C. F. D.,Ribas S. C.
Brazilian Journal of Biology , 2003,
Abstract: We investigated the feeding habits of the teiid lizard Cnemidophorus littoralis in the markedly seasonal habitat of Restinga da Barra de Maricá (22o57'S, 43o50'W), Rio de Janeiro State, Brazil, to evaluate to what extent its diet is ontogenetically, sexually, and/or seasonally conservative. Lizard stomach contents were analyzed, identified, counted, estimated for volume (in mm3), and grouped in four classes (active, sedentary, and clumped preys, and plant material). The relative contribution of each food class to the total prey volume consumed by adult males and females and juveniles was compared in three ways: between juveniles and adults, sexes, and seasons (wet and dry). Sexual dimorphism in head size was tested by comparing head width and jaw length using analysis of covariance (ANCOVA). Isopterans were the most important prey item, occurring in 93% of the lizard stomachs examined and corresponding to 96.4% of total prey content and 69.7% of total prey volume. They occurred in high frequencies in the stomachs of C. littoralis throughout all study months. We found no sexual, ontogenetic, or seasonal differences in C. littoralis diet although the sexes differed significantly in head width. We concluded that isopterans are the main item in the diet of C. littoralis in Restinga da Barra de Maricá, both for juveniles and adults. The lack of seasonal, sexual, or ontogenetic variation in its diet results from the massive consumption of these insects. Isopterans are small, occur in clumps, and are available year-round, and thus are an advantageous food item for the active forager C. littoralis. We also found sexual dimorphism in the head size of C. littoralis: males have wider heads than females. This dimorphism, however, does not seem to be related with the diet of the species, and is probably a result of sexual selection.
Isosporoid Coccidia (Apicomplexa: Eimeriidae) parasites of tanagers (Passeriformes: Thraupidae) from the Marambaia Island, Brazil
Berto, Bruno P.;Luz, Hermes R.;Flausino, Walter;Teixeira-Filho, Walter L.;Ferreira, Ildemar;Lopes, Carlos Wilson G.;
Pesquisa Veterinária Brasileira , 2011, DOI: 10.1590/S0100-736X2011000900012
Abstract: in recent years some coccidian parasites of birds were recorded in marambaia island, which is a protected environment with a great biodiversity of birds, mainly tanagers. in this current study isospora tiesangui, i. sepetibensis, i. ramphoceli, i. navarroi, i. cadimi and i. marambaiensis were identified according to their respective thraupid hosts of the marambaia island. these species were characterized with histograms, linear regression and analysis of variance (anova). the main feature of identification was the morphology of the sporocyst, mainly stieda and substieda bodies, since the morphometry did not provide sufficient differentiation. besides, dacnis cayana and thraupis palmarum were reported as new hosts to i. sepetibensis and i. navarroi respectively.
ECOMORPHOLOGICAL RELATIONSHIPS IN SIX LIZARD SPECIES OF RESTINGA DA BARRA DE MARICá, RIO DE JANEIRO, BRAZIL
Teixeira-Filho,Pedro; Rocha-Barbosa,Oscar; Paes,Viviane; Carvalho Ribas,Sueli; de Almeida,Josimar R.;
Revista chilena de anatomía , 2001, DOI: 10.4067/S0716-98682001000100007
Abstract: we studied some ecomorphological relationships in six lizard species (ameiva ameiva, cnemidophorus littoralis, tropidurus torquatus, liolaemus lutzae, mabuya agilis and m. macrorhyncha) from restinga de barra de maricá, rj. these species have marked differences in microhabitat utilization and in foraging behavior, which vary from active to ?sit-and-wait?. in this study, we compared the morphology of the fingers and claws of these lizards species with the different behaviors. the species that showed higher degree of arboreality (t. torquatus and m. macrorhyncha) had the 4th finger of the forelimb as the largest, while the other species had the 3rd. this seems to give some advantage for vertical sustains of the arboreal species. all species had the 4th finger as the largest of the hind limb. the two scincids (m. agilis and m. macrorhyncha) had more curved and shorter claws, which appears to aid in the climbing on the leaves of the bromeliad neoregelia cruenta. in addition, the claws of the essentially ground-dwelling species were larger than in the other species, suggesting that larger claws give some advantage for support on sand (providing a better impulse and speed), in the excavation of burrows, in the defense against predators, in the dispute for foraging ranges and in mate selection. in this study, the foraging strategy does not seem to be related to the absolute size of the fingers of the lizards, but with relative differences in the fingers of the forelimbs
Os segredos da ado??o e o imperativo da matriz bioparental
Teixeira Filho, Fernando Silva;
Revista Estudos Feministas , 2010, DOI: 10.1590/S0104-026X2010000100015
Abstract: this paper aims to interrogate the relation between the secrets of adoption and what we propose as a bioparental matrix. in according with our experience at the project ties of love: adoption, gender, citizenship and rights developed at the department of clinical psychology (unesp, assis, sp, brazil), this arbitrary ties reinforce the suffering, the stigma and the segregation that lay on adopted people or those that will supposedly be. in that sense, we point out the culture of adoption as an important reference in the construction of the inter-subjective relationship between biological, and/or adoptive parents and adopted children in the sense that, based upon a heteronormative matrix, which presupposes a continuum among sex/gender/desire, establishes a binary distinction among legal and non-legal children based on their blood ties.
Structure of claws and toes of two tropidurid lizard species of Restinga from Southeastern Brazil: adaptations to the vertical use of the habitat
Carvalho Ribas,Sueli; Velloso,Ana Lucia Rosario; Teixeira-Filho,Pedro; Rocha-Barbosa,Oscar; Evangelista,Heitor; Alves dos Santos,Elaine;
Revista chilena de historia natural , 2004, DOI: 10.4067/S0716-078X2004000400003
Abstract: tropidurus torquatus and liolaemus lutzae, found in a restinga habitat, show some morphological differences associated with differential microhabitats use. there were made measurements of the snout-vent length, length and width of the largest toe of hand and foot, and length, width, height and curvature of the claws. we counted the number of adhesive lamellae of the largest toe of each member. t. torquatus has larger toes, greater number of adhesive lamellae and higher and more curve claws than l. lutzae. no significant differences in toe and claw widths were found. these results suggest that the differences found in the morphology of toes and claws of these two species would be associated with the differential microhabitat use. t. torquatus has morphological adaptations that allow it to use the microhabitat both vertically or horizontally, while l. lutzae use it only horizontally
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