journal
MENU ▼
Read by QxMD icon Read
search

Brazilian Journal of Biology, Revista Brasleira de Biologia

journal
https://www.readbyqxmd.com/read/28492807/biochemical-parameters-of-silver-catfish-rhamdia-quelen-after-transport-with-eugenol-or-essential-oil-of-lippia-alba-added-to-the-water
#1
J Salbego, C Toni, A G Becker, C C Zeppenfeld, C C Menezes, V L Loro, B M Heinzmann, B Baldisserotto
The transport of live fish is a routine practice in aquaculture and constitutes a considerable source of stress to the animals. The addition of anesthetic to the water used for fish transport can prevent or mitigate the deleterious effects of transport stress. This study investigated the effects of the addition of eugenol (EUG) (1.5 or 3.0 µL L-1) and essential oil of Lippia alba (EOL) (10 or 20 µL L-1) on metabolic parameters (glycogen, lactate and total protein levels) in liver and muscle, acetylcholinesterase activity (AChE) in muscle and brain, and the levels of protein carbonyl (PC), thiobarbituric acid reactive substances (TBARS) and nonprotein thiol groups (NPSH) and activity of glutathione-S-transferase in the liver of silver catfish (Rhamdia quelen; Quoy and Gaimard, 1824) transported for four hours in plastic bags (loading density of 169...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492806/plankton-crustaceans-in-bays-with-different-trophic-status-in-llanquihue-lake-41%C3%A2-s-chile
#2
P De Los Ríos Escalante, D Soto, R Santander-Massa, P Acevedo
The Llanquihue lake is included in the called Araucanian or Nord Patagonian lakes located between 38-41° S. These lakes are characterized by their oligo-mesotrophic status due to human intervention which takes to the increase in nutrients inputs from industries and towns. Effects on zooplankton assemblages are observed with marked increase of daphnids abundance. The aim of the present study is to analyze the trophic status and zooplankton relative abundance in different bays of Llanquihue lake. It was found direct associations between chlorophyll a with daphnids percentage, total dissolved nitrogen with reactive soluble phosphorus nitrogen/phosphorus molar radio with cyclopoids percentage, and an inverse relation between daphnids and calanoids percentages...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492805/first-record-of-craspedacusta-sowerbii-lankester-1880-hydrozoa-limnomedusae-in-a-natural-freshwater-lagoon-of-uruguay-with-notes-on-polyp-stage-in-captivity
#3
M G Failla Siquier, W S Serra Alanis, C Martinez Debat
The freshwater cnidarian Craspedacusta sowerbii Lankester 1880, has invaded lakes and ponds as well as artificial water bodies throughout the world. The first record in Uruguay corresponding to the jellyfish was made in 1961 in two artificial fountains, with no mention of the polyp form. Although local reports of other related polyp species have been made, information on the benthic form of C. sowerbii is lacking. Here we report the finding of live frustules, solitary individuals, medusae and colonies from a natural lagoon in August 2010, allowing us to observe the morphology and behavior of the polyp stage in captivity...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492804/post-fire-reproduction-of-herbs-at-a-savanna-gallery-forest-boundary-in-distrito-federal-brazil
#4
K G Massi, C U O Eugênio, A C Franco
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 the savannas in Central Brazil. Thus, an accidental burning gave us the opportunity to describe the reproductive activity of the ground layer vegetation after a fire event along a savanna-forest boundary at the IBGE Ecological Reserve, Brasília, Brazil...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492803/tropical-forages-morphoanatomy-of-plants-grown-in-areas-with-the-death-of-pasture-syndrome
#5
N G Ribeiro-Júnior, O S Fagundes, A S Benevenuti, O M Yamashita, A A B Rossi, M A C Carvalho, I V Silva
Roots and leaves of Panicum maximum Tanzânia, Mombaça and Massai; Urochloa brizantha Piatã, Marandu and Xaraés; Urochloa humidicola Llanero; Urochloa ruziziensis Ruzizienses; Urochloa hybrida Mulato II and Cynodon nlemfuensis Estrela-roxa were analyzed, seeking to identify characters for better adaptation to the environment that may interfere with digestibility of tissue from the point of view of the rumen in cattle. Were planted ten cultivars in a completely randomized blocks with three repetitions. Was collected vegetative material, which histological slides were prepared from middle third of the sections of roots and leaves...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492802/gonadotrophic-prolactin-corticosterone-and-gonadal-hormones-levels-over-15-months-in-giant-amazon-river-turtles-podocnemis-expansa-schweigger-1812-testudines-podocnemididae-in-captive-conditions
#6
G E Freneau, V A Sá, C R Franci, D Vieira, B N Freneau
In order to achieve successful captive breeding the Podocnemis expansa, it is necessary to study their reproductive endocrinology. The purpose of this research was to evaluate and characterize plasma concentrations in gonadotrophic, gonadic, corticosterone and prolactin hormones from Giant Amazon Turtles under captive conditions. Blood samples were collected over a 15 month period. The samples were assayed by the use of radioimmunoassay, prolactin, corticosterone, LH, FSH, testosterone, 17β-estradiol and progesterone...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492801/orthotopic-tumorgrafts-in-nude-mice-as-a-model-to-evaluate-calcitriol-effects-in-breast-cancer
#7
V C N Fonseca-Filho, M L H Katayama, E C Lyra, D A Maria, R A Basso, S Nonogaki, J M Guerra, S Maistro, J C G S Góes, M A A K Folgueira
Objectives: To establish a tumorgraft model, from freshly collected breast cancer samples, which were directly implanted in nude mice, to study calcitriol effects. Methods: Breast cancer samples collected from 12 patients were orthotopically implanted into nude mice. Animals were treated with weekly intratumoral injections of calcitriol 3 μg/Kg, which was previously shown to induce peak serum calcitriol levels in the predicted therapeutic range. Results: Success engraftment rate was 25%...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492800/fungal-infection-control-by-garlic-extracts-allium-sativum-l-and-modulation-of-peritoneal-macrophages-activity-in-murine-model-of-sporotrichosis
#8
J P Burian, L V S Sacramento, I Z Carlos
Garlic (Allium sativum L.) is grown all over the world as seasoning and medicinal vegetable since 3,000 BC. Allicin is the main component of garlic, being attributed to it the most of its biological activities, such as bactericidal, antifungal and antiviral actions. However, other compounds of garlic present antioxidant, hypocholesterolemic, vasodilator activities, protective action against different types of cancer, and immunomodulatory. Fungal infections are important causes of morbidity and mortality in people mainly in immunosuppressed ones...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492799/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
#9
C P Coelho, D C Gomes, F A G Guilherme, L F Souza
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 system was conducted in an urban forest fragment in Jataí, GO. Distribution data were gathered from floristic surveys and digital plant databases. The floral morphology and the pollination mechanism were studied on through field observations and preserved flowers...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492798/medicinal-plants-profile-used-by-the-3rd-district-population-of-macei%C3%A3-al
#10
S A S Griz, T J Matos-Rocha, A F Santos, J G Costa, K C Mousinho
Herein the use of medicinal plants by the population of the 3rd Sanitary District of Maceió-AL city is reported. Transversal description was conducted from February 2013 to January 2014, with a sample of 116 individuals of both Gender Genders aged over 18 years. The ethnobotanical information interviews ethnobotanical information were obtained through semi - structured questionnaire featuring the use of medicinal plants and social and economical data. Descriptive statistics was applied for quantitative variables as mean and standard deviation and proportions for qualitative variables in the frequency table format...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28355393/seed-removal-of-dipteryx-alata-vog-leguminosae-faboidae-in-the-edge-and-interior-of-cerrado
#11
J Ragusa-Netto
Post-dispersal seed agents of mortality include pathogens, invertebrates, and vertebrates, which may shape tropical tree populations and communities. In this study I experimentally evaluated Dipteryx alata endocarp removal both in the interior and edge of Cerrado vegetation. Specifically, I simulated primary dispersion of endocarps by bats and evaluated secondary removal intensity according to habitat, season, and endocarp number. This study was developed in the Pombo Natural Municipal Park, a large Cerrado remnant with an area of 9,000 ha, located in the Western Brazil...
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28355392/insect-diversity-in-organic-rice-fields-under-two-management-systems-of-levees-vegetation
#12
L G Acosta, S M Jahnke, L R Redaelli, P R S Pires
Simplified environments characterize agroecosystems, reducing the diversity of associated plants, which are not cultivated for economic purposes, causing unbalances that can promote the emergence of cultivated plants pests, as well as the reduction of their natural enemies. Management systems that increase diversity in agroecosystems can extend the action of natural enemies of pests. Studies to understand the diversity of insects associated with rice cultivation and determine their ecological guilds can provide information about the composition and structure of such ecosystems, which can be applied to integrated pest management...
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28355391/nesting-of-morelet-s-crocodile-crocodylus-moreletii-dumeril-and-bibron-in-los-tuxtlas-mexico
#13
A Villegas, G D Mendoza, J L Arcos-García, V H Reynoso
We evaluated the nesting by Crocodylus moreletii in Lago de Catemaco, Veracruz, southeastern, Mexico. During the nesting and hatching seasons, we searched for nests along the northern margins of the lake and small associated streams. We investigated egg mortality by weekly monitoring each of the nests found, recording sign of predation (tracks and holes dug into the nest) and the effect of water level fluctuations. We not found differences to nest between inland or flooded zones. However, we found that egg size varied among nests...
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28355390/could-fidicina-mannifera-hemiptera-cicadoidea-fidicinini-promote-a-resource-pulse-in-two-brazilian-cerrado-vegetation-classes
#14
R N Oliveira, S S Caramori, D H B Maccagnan
Cicadas are usually studied regarding their importance in agriculture. However, the possibility of this group to represent a pulse of nutrients can also imply on the success of a given species in the biome. The aim of this study was to assess the level of total soluble proteins and lipids of Fidicina mannifera (Fabricius, 1803), and to determine whether the species can promote a pulse of nutrients in two vegetation classes of the Brazilian Cerrado. To assess the pulse of nutrients, it was concluded the determination of total soluble proteins and lipids from samples of males and adult females of F...
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28355389/leptodactylus-chaquensis-cei-1950-leptodactylidae-leptodactylinae-extension-of-the-distribution-in-state-of-rio-grande-do-sul-southern-brazil
#15
V H S Teixeira, F M Quintela, D Loebmann
No abstract text is available yet for this article.
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28355388/-in-vitro-evaluation-of-the-bacterivore-potential-of-three-cladoceran-species-occurring-in-tropical-and-subtropical-regions
#16
L H Hayashi-Martins, A S Mansano, K F Hisatugo, O Rocha, M H R Seleghim
Cladocerans occupy an important position among the bacterial consumers in freshwater food webs, being relatively non-selective filter feeders that can exert a strong impact on microbial populations. We evaluated the bacterivory potential of three cladocerans species of subtropical and tropical occurrence (Ceriodaphnia silvestrii, Daphnia gessneri and Ceriodaphnia cornuta) at different life stages, by scanning electron microscopy (SEM) and by the quantification of their bacterial consumption rates using fluorescently labeled bacteria (FLB)...
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28355387/effects-of-soil-and-space-on-the-woody-species-composition-and-vegetation-structure-of-three-cerrado-phytophysiognomies-in-the-cerrado-amazon-transition
#17
L Maracahipes-Santos, E Lenza, J O Santos, H A Mews, B Oliveira
The Cerrado Biome is considered one of the world's biodiversity hotspots because of its rich biodiversity, the high level of endemism and the increasing threat. The Cerrado is composed by a mosaic of different vegetation types, including physiognomies that vary from grasslands (campo limpo) to savannas (typical cerrado or cerrado sensu stricto) and cerrado woodlands (cerradão). However, the factors that determine the composition of the Cerrado's flora and the structure of the physiognomies that compose this biome are still poorly understood...
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28355386/biological-invasion-at-an-early-stage-first-record-of-the-banjo-catfish-pseudobunocephalus-iheringii-siluriformes-aspredinidae-in-the-tramanda%C3%A3-river-basin-brazil-and-the-potential-invasion-pathway-to-this-system
#18
R A Silveira, J Ferrer, F G Becker, S M Hartz
No abstract text is available yet for this article.
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28300945/cytotaxonomy-of-the-maculata-subcomplex-hemiptera-triatominae
#19
C H L Imperador, F F F Moreira, J A Rosa, M T V Azeredo-Oliveira, K C C Alevi
No abstract text is available yet for this article.
March 13, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28300944/phytophagy-of-the-predator-podisus-nigrispinus-dallas-1851-hemiptera-pentatomidae-fed-on-prey-and-brassicaceae
#20
J F J Grigolli, M M Kubota Grigolli, D G Ramalho, A L Martins, A M Vacari, S A De Bortoli
The purpose of this study was to investigate the development and reproduction of the zoophytophagous predator Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) fed kale, broccoli and cabbage affects its. Nymphs and adults of this predator were fed on larvae of Plutella xylostella (L.) (Lepidoptera: Plutellidae) as prey with kale, cabbage, or broccoli. In the nymph period, the duration and prey consumption were similar with all the Brassicacea cultivar. However, nymph viability was higher for predators with broccoli leaves...
March 13, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
journal
journal
39877
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"