Ontogenesis
Mostrando 1-12 de 70 artigos, teses e dissertações.
-
1. Hunting paths in the Amazon: technics and ontogenesis among the Panará
Resumo Este trabalho apresenta uma descrição da caça e uma análise das relações técnicas entre os Panará, grupo indígena que vive na Amazônia meridional. O texto tem como foco dois processos genéticos da caça: a individuação do caçador e a constituição de um território de caça. Nesse sentido, aborda a constituição da pessoa do caçador e
Vibrant, Virtual Braz. Anthr.. Publicado em: 04/11/2019
-
2. Generation of a triple-fluorescent mouse strain allows a dynamic and spatial visualization of different liver phagocytes in vivo
ABSTRACT Resident and circulating immune cells have been extensively studied due to their almost ubiquitous role in cell biology. Despite their classification under the “immune cell department”, it is becoming increasingly clear that these cells are involved in many different non-immune related phenomena, including fetus development, vascular formation,
An. Acad. Bras. Ciênc.. Publicado em: 16/10/2017
-
3. Pericarp ontogenesis with emphasis on the dispersal apparatus of three weed species of Faboideae (Fabaceae)
It is known that the efficient dispersal is one among other features that amplify the invasion potential of a plant. Knowledge of the ontogeny, morphology and fruit dispersal of species is indispensable for weed control in crops. To identify the pericarp structures involved in the fragmentation and dehiscence processes and other features related to dispersal
Acta Bot. Bras.. Publicado em: 2013-12
-
4. Ontogênese de conexinas no cerebelo. / Ontogenesis of connexins in the cerebellum.
As junções comunicantes formadas por conexinas (Cx) ligam o citoplasma de células adjacentes e permitem a passagem de moléculas e íons entre elas. No sistema nervoso, esses canais constituem as sinapses elétricas e são fundamentais para a fisiologia glial. No desenvolvimento, as conexinas estão envolvidas nos processos de migração, proliferação e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2012
-
5. Ontogênese do ritmo de consumo de oxigênio em operárias de Melipona quadrifasciata (Hymenoptera; Meliponini): a influência da luz / Ontogenesis of respiratory rhythms in Melipona quadrifasciata workers: the influence of light
As operárias de Melipona quadrifasciata exercem diferentes funções na colônia, segundo sua faixa etária. No interior da colônia, os indivíduos mais jovens, nutrizes, ficam localizados na região mais interna e aproximam-se progressivamente das regiões periféricas à medida que envelhecem. Os indivíduos mais velhos, forrageiras, saem da colônia dia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/04/2012
-
6. Early ontogenesis of the angelfish, Pterophyllum scalare Schultze, 1823 (Cichlidae)
This study describes the egg membrane structures of angelfish (Pterophyllum scalare), morpho-physiological changes during angelfish embryogenesis from activation to hatching under optimal conditions (28°C; pH 6.8), the developing larvae and fry, the effect of alkaline pH on the early developmental stages of the species, the relationship between food item si
Neotrop. ichthyol.. Publicado em: 04/09/2012
-
7. Estudo da ontogênese dos ritmos biológicos em neonatos humanos e ratos. / Study of the ontogenesis of biological rhythms in newborns humans and rats.
Fatores ambientais podem modificar o desenvolvimento dos ritmos biológicos em neonatos, como já demonstrado em ratos. Neste contexto insere-se o estudo de recém-nascidos pré-termo mantidos em unidades de cuidado neonatal. Descrevemos neste trabalho a evolução da ritmicidade no ciclo vigília/sono, atividade/repouso, temperatura do punho e alimentação
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/08/2011
-
8. Ontogenesis and functional morphology of the digestive system of the freshwater prawn, Macrobrachium amazonicum (Decapoda: Palaemonidae)
The appropriate feeding regime for larvae and post-larvae of crustacean decapods is essential for successful larval culture. Reports on the development and morphology of the mouthparts and foregut of these crustaceans have aided in the selection of appropriate larval foodstuffs and consequently increased larval survival and growth rate during development. In
Zoologia (Curitiba). Publicado em: 2011-06
-
9. Análise comparativa da expressão dos genes Dapper (Dpr) durante a ontogênese dos membros de camundongo (Mus musculus C57BL/6) e galinha (Gallus gallus) / Comparative analysis of Dapper (Dpr) gene expression during limbs ontogeny of mouse (Mus musculus C57BL/6) and chicken (Gallus gallus)
Among the molecules involved in molecular signaling during development, those involved in the Wnt and TGF-ß pathways are particularly important. Studies have shown that the Dapper protein family (Dpr) can modulate Wnt and TGF-ß signaling. The Dpr gene family consists of three members: Dpr1, Dpr2 and Dpr3 in zebrafish, mice and humans, and only two: Dpr1 an
Publicado em: 2011
-
10. Differential patterns of myosin Va expression during the ontogenesis of the rat hippocampus
Myosin Va is an actin-based, processive molecular motor protein highly enriched in the nervous tissue of vertebrates. It has been associated with processes of cellular motility, which include organelle transport and neurite outgrowth. The in vivo expression of myosin Va protein in the developing nervous system of mammals has not yet been reported. We describ
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-09
-
11. Morphologic analysis of developmental phases and gill ontogenesis in neotropical species Poecilia vivipara (Cyprinodontiformes: Poeciliidae) exposed to different salinities
The present study evaluated and characterized the different phases of development and the cell types present in the gill epithelium of embryos, larvae, and fingerlings of guppy (Poecilia vivipara Bloch & Schneider, 1801) specimens exposed to water with salinity ranging from 0‰ to 20‰. The development of P. vivipara was classified into eight phases. The y
Zoologia (Curitiba). Publicado em: 2010-08
-
12. Ontogênese, função e evolução das traqueídes vasculares em Cactaceae, tendo como modelo o cacto colunar Pilosocereus aurisetus (Werdern.) Byles &G. D. Rowley / Ontogenesis, function and evolution of wide-band tracheids in Cactaceae: Ontogenesis, function and evolution of wide-band tracheids in Cactaceae: using Pilosocereus aurisetus as a model cactus.
Studies with wide-band tracheids have adressed phylogenetic and functional questions. Although these cells have been described as tracheids, with secondary cell walls thicker than 2µm, their recent register in different tissues of other families has pointed out that this definition may not be well established. The aim of the present study is to understand t
Publicado em: 2010