Abstract:
:Brazil and the southeastern United States have faunistic similarities and differences which are of fundamental interest to the environmental scientist. These similarities and differences provide natural experimental organisms and habitats which can provide answers to basic and applied questions. What are the lethal limits of organisms to environmental changes? How do animals functionally adjust to various ecological parameters? How have basic biological systems evolved in response to new environments? Although the comparative functional attributes of individual species has been stressed in this paper, knowledge of the comparative dynamics os is vitally needed before man can gain an understanding of how systems function, and, equally important, how to manage and manipulate coastal marine environments. This critical area is where man has the potential to exert his greatest influence on the future existence and evolution of specific organisms and ecosystems.
journal_name
An Acad Bras Ciencjournal_title
Anais da Academia Brasileira de Cienciasauthors
Vernberg FJ,Vernberg WBsubject
Has Abstractpub_date
1976-01-01 00:00:00pages
69-74eissn
0001-3765issn
1678-2690journal_volume
47pub_type
杂志文章abstract::We used skeletochronology to compare age, size, reproductive parameters and growth patterns of two related, anuran amphibians from Northern Argentina: Leptodactylus bufonius (n=69) and L. latinasus (n=56), in order to better understand their coexistence in syntopy. Previous studies showed that the two species overlap ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3675201920180507
更新日期:2019-07-29 00:00:00
abstract::In this work we study the problem of modeling identification of a population employing a discrete dynamic model based on the Richards growth model. The population is subjected to interventions due to consumption, such as hunting or farming animals. The model identification allows us to estimate the probability or the ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652010000400028
更新日期:2010-12-01 00:00:00
abstract::The aim of this study was to evaluate the production performance of Nile tilapia post-larvae and fingerlings fed with increasing levels of alcoholic extract of propolis into diets. In Experiment 1, 1800 post-larvae were distributed in 30 tanks, in a completely randomized design with five treatments composed by the inc...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201920180297
更新日期:2019-05-23 00:00:00
abstract::Candidiasis has become an important concern for clinical practice, especially with the increasing incidence of immunocompromised patients. In this scenario, the development resistance to fluconazole presents a challenge for treating these opportunistic infections. The aim of this study was to evaluate some epidemiolog...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201520140717
更新日期:2015-08-01 00:00:00
abstract::The Bahía Blanca estuary (Argentina) has a morphological configuration resulting from hydrological and sedimentary processes related to Late Quaternary sea level changes. This estuarine system occupies a large coastal plain with a dense net of tidal channels, low-altitude islands and large intertidal flats. Little is ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:
更新日期:2014-06-01 00:00:00
abstract::Penguins identify their mate or chick by an acoustic signal, the display call. This identification is realized in a particularly constraining environment: the noisy world of a colony of thousands of birds. To fully understand how birds solve this problem of communication, we have done observations, acoustic analysis, ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652004000200015
更新日期:2004-06-01 00:00:00
abstract::It is known that hormones influence significantly the prostate tissue. However, we reported that mating induces an increase in androgen receptors, revealing a neural influence on the gland. These data suggested that somatic afferents (scrotal and genitofemoral nerves) and autonomic efferents (pelvic and hypogastric ne...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652010000200015
更新日期:2010-06-01 00:00:00
abstract::The present study aimed to assess the accuracy of linear measurements performed with two software packages in multislice (MSCT) and cone beam (CBCT) computed tomography (CT) images. The sample consisted of 10 human mandibles marked standardly 8 times with metallic orthodontic wires. The mandibles underwent both MSCT a...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201720170227
更新日期:2017-10-01 00:00:00
abstract::Toxoplasmosis is the most common cause of infectious uveitis in Brazil, with a higher frequency in the South of the country. We have collected samples from porcine tongue and diaphragm obtained in both large and small abattoirs and used molecular biological technique to determine the prevalence of infection and RFLP a...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652007000100013
更新日期:2007-03-01 00:00:00
abstract::The effects of food restriction (FR) on the morphoquantitative aspects of the wall and myenteric neurons of the proximal colon in adult rats were analysed. FR was imposed by duplication of the experimental brood size in relation to the control brood during lactation. The FR group received a 50% reduction of food from ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201420140163
更新日期:2014-12-01 00:00:00
abstract::Pathogenic microbial detection and control in laboratory animal facilities is essential to guarantee animal welfare, data validity and reproducibility. Helicobacter spp. are known to affect mice health, what may interfere with experimental outcomes. This study aimed to screen for Helicobacter spp. in mice from animal ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765202020191517
更新日期:2020-01-01 00:00:00
abstract::Coffee is one of the most important Brazilian agricultural commodities exported, and Minas Gerais and Espírito Santo States are the main coffee producers. Scale insects are important coffee pests, and 73 species of Cerococcidae (3), Coccidae (18), Diaspididae (6), Eriococcidae (1), Ortheziidae (3), Pseudococcidae (21)...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201720160689
更新日期:2017-10-01 00:00:00
abstract::We propose a new four-parameter lifetime model, called the extended log-logistic distribution, to generalize the two-parameter log-logistic model. The new model is quite flexible to analyze positive data. We provide some mathematical properties including explicit expressions for the ordinary and incomplete moments, pr...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201720150579
更新日期:2017-01-01 00:00:00
abstract::This study investigated the ability of formulation containing Zingiber officinale (ginger) to reverse health changes promoted by unhealthy diet in Wistar rats. Five compounds from the gingerol family and three from the shogaol family were identified in the chromatographic analyzes of the extract. The animals were fed ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201920180975
更新日期:2019-11-11 00:00:00
abstract::With the advance and popularization of molecular techniques, the identification of genetic mutations that cause diseases has increased dramatically. Thus, the number of laboratories available to investigate a given disorder and the number of subsequent diagnosis have increased over time. Although it is necessary to id...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章,评审
doi:10.1590/0001-3765201520140711
更新日期:2015-08-01 00:00:00
abstract::One of the most important steps is to clarify the juice, which are added synthetic polymer acrylamide base, aiming the fast settling of impurities present in the juice. However, this input is expensive and may have carcinogenic and neurotoxic actions to humans. The search for new natural flocculants that have similari...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201720170473
更新日期:2017-10-01 00:00:00
abstract::During the ageing process the enteric nervous system undergoes morphofunctional changes, such as enteric neurodegeneration. Neuronal death can be attributed to increase radicals free, and ascorbic acid (AA), known antioxidant, could minimize damage cause by oxidative stress. The objective of this study is to analyse t...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/S0001-37652013005000002
更新日期:2013-03-01 00:00:00
abstract::Studies aiming at improving the activity and stability of dispersed W and Mo containing Pt catalysts for the CO tolerance in proton exchange membrane fuel cell (PEMFC) anodes are revised for the following catalyst systems: (1) a carbon supported PtMo electrocatalyst submitted to heat treatments; (2) Pt and PtMo nanopa...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201820170559
更新日期:2018-04-16 00:00:00
abstract::Sea anemones are considered as polyphagous opportunistic predators and it has been suggested that their diet reflects the structure of the community they inhabit. The feeding ecology of intertidal species is an interesting topic to study due to their wide variety of strategies to obtain food. In this sense, we studied...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765202020190520
更新日期:2020-10-19 00:00:00
abstract::Sugarcane crop conventional tillage has been replaced by deep soil preparation with few studies about its effect on soil quality and sustainability. The aim of this study was to assess structural volumes ina dystrophic Red-Yellow Latosol subjected to conventional tillage (CT) and deep localized soil tillage (DLST) to ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765202020190450
更新日期:2020-01-01 00:00:00
abstract::A new azhdarchoid pterosaur from the Upper Cretaceous of Patagonia is described. The material consists of an incomplete edentulous lower jaw that was collected from the upper portion of the Portezuelo Formation (Turonian-Early Coniacian) at the Futalognko site, northwest of Neuquén city, Argentina. The overall morphol...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201720170478
更新日期:2017-01-01 00:00:00
abstract::In vitro and in vivo activity of the Lippia alba essential oil (EO) against Aeromonas sp. was evaluated. In the in vitro assay the minimum inhibitory concentration (MIC) and a minimum bactericidal concentration (MBC) of EO for Aeromonas cells were determined using the microdilution method. Twenty five strains of Aerom...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201520130442
更新日期:2015-03-01 00:00:00
abstract::Microglial cells within the developing central nervous system (CNS) originate from mesodermic precursors of hematopoietic lineage that enter the nervous parenchyma from the meninges, ventricular space and/or blood stream. Once in the nervous parenchyma, microglial cells increase in number and disperse throughout the C...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章,评审
doi:10.1590/s0001-37652000000100013
更新日期:2000-01-01 00:00:00
abstract::The non-dinosaurian dinosauriform silesaurids are the closest relatives of crown-group dinosaurs and are thus, important for understanding the origins of that group. Here, we describe the limb bone histology of the Late Triassic silesaurid Sacisaurus agudoensis from the Candelária Sequence of the Santa Maria Supersequ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201920180643
更新日期:2019-06-19 00:00:00
abstract::Hypostomus commersoni Valenciennes 1836, Hypostomus cordovae (Günther 1880) and Hypostomus laplatae (Eigenmann 1907) have been little studied since their original descriptions. This study shows a comprehensive review of these species from the Lower La Plata Basin, including their taxonomic history, distribution, color...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201920180131
更新日期:2019-01-01 00:00:00
abstract::Annulated thienopyrimidine derivatives attracted big interest of the scientific community due to their broad spectrum of biological activities among which are the inhibition of phosphodiesterase, antiproliferative and antimicrobial activities. As a continuation of our studies on the synthesis and biological activity o...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201820170798
更新日期:2018-04-23 00:00:00
abstract::Most herbicides applied in crop field, stay in the soil for a period, affecting next crop or even the plants using as green manure. Nowadays, the use of herbicides grow to increase productivity, mainly in the grain producing region north of Rio Grande do Sul state. The objective of this study was to evaluate the effec...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201820170482
更新日期:2018-04-01 00:00:00
abstract::The storage of high level radioactive waste is still an unresolved problem of the nuclear industry, being geological disposal the most favoured option and, naturally, the one requiring the strongest geo-mechanical input. Most conceptual designs for the deep geological disposal of nuclear waste envisage placing the can...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652010000100013
更新日期:2010-03-01 00:00:00
abstract::The use of sensors and optical fibers for monitoring structures is continuously growing. Strains, displacements, accelerations, temperatures are just a few of the monitoring possibilities. In the case of dam structures, concrete face rockfill dams constitute a type of structures where the monitoring of water infiltrat...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201820170144
更新日期:2018-04-01 00:00:00
abstract::Plutella xylostella L. is one of the main agents to cause damages to plants of Brassica genus, provoking negative impacts in cultures. The use of botanical extracts in plants protection has been related in literature, however, their use in the species analyzed in this study is not yet reported. We assessed the effect ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201620150236
更新日期:2016-01-01 00:00:00