Ontogeny
Mostrando 1-12 de 445 artigos, teses e dissertações.
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1. Immune system: development and acquisition of immunological competence
Abstract Objectives: To describe the ontogeny of the immune system and the adaptive mechanisms of the immune system in the neonatal period, with an emphasis on transplacental antibody transport and breastfeeding. Source of data: Non-systematic literature review in the PubMed database. Summary of the findings: The last two decades have witnessed a great ad
J. Pediatr. (Rio J.). Publicado em: 2021-04
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2. A new device to autonomously feed individualized mantids on extended periods of time
ABSTRACT Mantises can live for many months, are naturally voracious, and feed invariably on live prey. Many species have a propensity for cannibalism and cannot be kept together for most of their life cycle, which makes large-scale rearing typically time-consuming, thus easily becoming prohibitive. This is particularly true for early instars, because they ar
Rev. Bras. entomol.. Publicado em: 13/01/2020
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3. Synflorescence morphology of species of Typha L. (Typhaceae): anatomical and ontogenetic bases for taxonomic applications
ABSTRACT The inflorescence of plants of the genus Typha L. consists of a polytelic system with the fertile region containing staminate flowers in the terminal portion and pistillate flowers in the basal portion. Although some useful morphological information has been provided to characterize species of the genus, various divergent typologies have arisen due
Acta Bot. Bras.. Publicado em: 07/10/2019
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4. Phytophthora palmivora: agente causal da podridão da base do estipe da pupunheira no Brasil
RESUMO A área plantada com pupunheira (Bactris gasipaes) para a produção de palmito tem aumentado nos estados da Bahia, Espírito Santo, Rio de Janeiro, Tocantins, São Paulo, Paraná e Santa Catarina. Nestas regiões os plantios são atacados pela podridão da base do estipe (PBE), associada ao oomiceto Phytophthora palmivora. Há poucos trabalhos sobre
Summa phytopathol.. Publicado em: 10/07/2019
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5. New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
Abstract: Tapejaridae is a clade of toothless pterosaurs typically characterized by a large nasoantorbital fenestra and a premaxillary crest that extends from the anterior to the posterior part of the skull. Sinopterus dongi was the first reported Chinese tapejarid. Another genus “Huaxiapterus” was described, but it was later on determined that “Huaxia
An. Acad. Bras. Ciênc.. Publicado em: 27/06/2019
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6. Changes in digestive enzymes activities during the initial ontogeny of wolf cichlid, Parachromis dovii (Perciformes: Cichlidae)
ABSTRACT Wolf cichlid, Parachromis dovii, is a species with a high potential for aquaculture in Central America; however, the knowledge of the digestive physiology in larvae period is limited. For these reason, this study evaluated the changes on digestive enzymes (alkaline and acid proteases, trypsin, chymotrypsin, aminopeptidase, carboxypeptidase, lipases,
Neotrop. ichthyol.. Publicado em: 29/04/2019
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7. What are tilosomes? An update and new perspectives
ABSTRACT Characterization of tilosomes and study of their development revealed that they are similar to the cell wall ingrowths of transfer cells. Roots from Anathallis sclerophylla were used to examine the development, histochemistry and ultrastructure of tilosomes using light, confocal and electron microscopy (both SEM and TEM). Tilosomes initiate as cellu
Acta Bot. Bras.. Publicado em: 29/11/2018
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8. New data on the Late Cretaceous lizard Dicothodon bajaensis (Squamata, Borioteiioidea) from Baja California, Mexico reveals an unusual tooth replacement pattern in squamates
Abstract Borioteiioids comprise an extinct family of squamates that inhabited the Northern Hemisphere during the Cretaceous and were characterized by varying patterns of tooth replacement and dental morphology. Understanding the evolution of these tooth replacement patterns has, however, been largely hampered by an extremely fragmentary fossil record. Here w
An. Acad. Bras. Ciênc.. Publicado em: 19/07/2018
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9. A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
ABSTRACT Body-size is significantly correlated with the number of vertebrae (pleomerism) in multiple vertebrate lineages, indicating that somitogenesis process is an important factor dictating evolutionary change associated to phyletic allometry and, consequently, species fitness and diversification. However, the role of the evolution of extreme body sizes (
An. Acad. Bras. Ciênc.. Publicado em: 17/05/2018
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10. Larval development of the Mexican Snook, Centropomus poeyi (Teleostei: Centropomidae)
ABSTRACT We document for the first time the early ontogeny of Centropomus poeyi based on captive raised material representing 0-19 days posthatch (dph). The achievement of early developmental landmarks (i.e., yolk-sac depletion, flexion, development of fins) and changes in pigmentation are described (1.4 mm NL-10.6 mm SL; 0-19 dph) and documented for a subse
Neotrop. ichthyol.. Publicado em: 26/03/2018
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11. Comportamento alimentar de paralarvas do polvo Octopus vulgaris Tipo II (Cuvier, 1797) alimentadas com artêmia enriquecida com microalgas e suplementada com DHA
ABSTRACT The inexistence of nutritionally adequate diets in paralarval rearing is the main bottleneck for commercial production of the common octopus Octopus cf. vulgaris. We report the feeding behavior of O. vulgaris Type II paralarvae fed on Artemia sp (0.1 individual. mL-1) nauplii enriched with microalgae Isocrysis galbana and Pavlova lutheri microalg
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2018-03
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12. Mechanisms involved in hearing disorders of thyroid ontogeny: a literature review
ABSTRACT Endocochlear, retrocochlear and/or central origin hearing damage may be related to the absence of appropriate levels of thyroid hormone during morphogenesis and/or auditory system development. Hearing disorders related to the thyroid are not well studied, despite speculation on the pathophysiological mechanisms. The objective of this review was to c
Arch. Endocrinol. Metab.. Publicado em: 18/09/2017