Results: 262

The ethical-normative gap in the Brazilian regulation of assisted reproductive techniques: the instrumentalization of human embryos for medical-scientistic knowledge through pre-implantation genetic diagnosis

Rev. colomb. bioét; 13 (2), 2018
This paper pursues a better interpretation of new reproductive technologies by making a counterpoint to the scientistic bias of bills being processed in a country that excels in defending the interests of professionals, especially in clinics and laboratories, disregarding the new person generated. The so...

Sexuality and reproduction in women with spinal cord injury

Fisioter. Mov. (Online); 30 (4), 2017
Abstract Introduction: Spinal cord injury (SCI) is debilitating and results in different social representations for the women affected in terms of their sexuality and reproduction. Objective: Describe the experience of women with SCI regarding sexuality and reproduction under these conditions. Method...

Post-fire reproduction of herbs at a savanna-gallery forest boundary in Distrito Federal, Brazil

Braz. j. biol; 77 (4), 2017
Abstract In Cerrado, studies of post-fire vegetation recovery show that some herbaceous species are able to flower shortly after fires. However, these were mainly short-term studies that focused on grasslands and savannas. Little is known about the effects of fire on ground layer of forests that border t...

Reproductive biology of endemic Solanum melissarum Bohs (Solanaceae) and updating of its current geographic distribution as the basis for its conservation in the Brazilian Cerrado

Braz. j. biol; 77 (4), 2017
Abstract The genus Solanum (family Solanaceae) includes more than 1400 species and has buzz-pollinated flowers with poricidal anthers. The present study aimed to describe the distribution, breeding system and pollination mechanism of Solanum melissarum, a species endemic to Brazil. The study of breeding ...

Transcriptome analysis of female and male flower buds of Idesia polycarpa Maxim. var. vestita Diels

Background: Idesia polycarpa Maxim. var. vestita Diels, a dioecious plant, is widely used for biodiesel due to the high oil content of its fruits. However, it is hard to distinguish its sex in the seedling stage, which makes breeding and production problematic as only the female tree can produce fruits, ...

Curar ou criar pessoas: caminhos reprodutivos distintos ou similares?

Rev. bioét. (Impr.); 25 (2), 2017
Resumo Trata-se de pesquisa qualitativa, descritiva e exploratória, realizada entre setembro e dezembro de 2015, mediante entrevistas com dez estudantes de enfermagem e medicina com o objetivo de analisar sua compreensão sobre situações práticas no campo da reprodução humana e planejamento familia...

Selenocysteine modulates resistance to environmental stress and confers anti-aging effects in C. elegans

Clinics; 72 (8), 2017
OBJECTIVE: The free radical theory of aging suggests that cellular oxidative damage caused by free radicals is a leading cause of aging. In the present study, we examined the effects of a well-known anti-oxidant amino acid derivative, selenocysteine, in response to environmental stress and aging using Ca...

Lightweight males of Podisus nigrispinus (Heteroptera: Pentatomidae) neglect lightweight females due low reproductive fitness

Braz. j. biol; 77 (2), 2017
Abstract Sexual choice by male stink bugs is important because females that experience food shortages lay fewer eggs with lower viability compared with well-fed females. In this study, we investigated whether Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) males fed with a low-quality diet durin...

Reproduction of the Atlantic Forest endemic star-throated antwren, Rhopias gularis (Aves: Thamnophilidae)

Braz. j. biol; 77 (2), 2017
Abstract The Thamnophilidae are one of the most speciose Neotropical bird families, yet aspects of their natural history remain poorly documented. Here we provide information on breeding phenology, the length of incubation and nestling periods, parental care, and nesting success of the Star-throated Antw...

Biological performance of the predatory mite Neoseiulus idaeus (Phytoseiidae): a candidate for the control of tetranychid mites in Brazilian soybean crops

Braz. j. biol; 77 (2), 2017
Abstract The soybean (Glycine max (L.): Fabaceae) is considered the most important agricultural crop in Brazil. Phytophagous tetranychid mites as Mononychellus planki McGregor, Tetranychus ludeni Zacher and T. urticae Koch have been considered pest in soybean crops. Neoseiulus idaeus Denmark & Muma (...