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| Registros recuperados: 1.256 | |
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| Vinatea, Luis; UFSC; Muedas, Walter; UFMA; Arantes, Rafael; UFSC. |
| A simulation was conducted to determinate the impact caused by the combination of Litopenaeus vannamei respiratory rate (mg O2 shrimp-1 h-1), the behavior of SOTR (kg O2 h-1) of mechanical aerators as a function of salinity, as well as the oxygen consumption rate of the pond water and soil (mg O2 L-1 h-1) on the aeration of shrimp ponds (1, 10, 50 and 100 ha) stocked with different densities (10, 40 and 120 shrimp m-2), salinities (1, 13, 25 and 37 ppt), temperatures (20, 25 and 30°C), and shrimp wet weight (5, 10, 15 and 20 g). Results showed that under lower salinity, with larger shrimp, and higher stocking density, higher will be the quantity of required 2-HP aerators to keep dissolved oxygen over 50% saturation. In addition, under low salinity, with 5... |
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Palavras-chave: Aeration; Shrimp farming; Respiration; Oxygen consumption; Density Aeration; Shrimp farming; Respiration; Oxygen consumption; Density. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7018 |
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| Moreira, Luís Henrique de Aquino; UEM; Yamada, Fábio Hideki; UEM; Ceschini, Tiago Lopes; UEM; Takemoto, Ricardo Massato; UEM; Pavanelli, Gilberto Cezar; UEM. |
| The study analyzed 84 specimens of Metynnis lippincottianus (Cope, 1870) (Characidae) from two environments with different degrees of impact due to a hydroeletric plant; 44 hosts from the upper Parana river floodplain (low degree of impact) and 40 from Paranapanema tributaries (Corvo and Guairacá rivers, high degree of impact). The prevalence found, among the total collected fishes, was 77.4%. One digenetic species, Dadayus pacupeva, and four nematodes, Spinoxyuris oxydoras, Contracaecum sp. (larval stage), Procamallanus (Spirocamallanus) inopinatus and Raphidascaris (Sprentascaris) mahnerti were identified. In the floodplain, the fishes parasitized by D. pacupeva and S. oxydoras presented better relative condition factor (Kn) than non-parasitized species.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecology; Parasites; Nematode; Digenetic; Hydroelectric plants ecology; Parasites; Nematode; Digenetic; Hydroelectric plants Parasitologia. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3668 |
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| Serragiotto, Mariana Cristina; Universidade Estadual de Maringá; Souza Filho, Edvard Elias de; Universidade Estadual de Maringá; Couto, Edivando Vitor do; Universidade Estadual de Maringá; Manetta, Gislaine Iachstel; Universidade Estadual de Maringá; Benedito, Evanilde; Universidade Estadual de Maringá. |
| The present study examined the influence of the availability of riparian vegetation and C3 emergent aquatic macrophytes on carbon assimilation by Prochilodus lineatus. The vegetal cover of these producers, available at 30 m of the bank, for the terrestrial ecosystem of the rivers Baia, Ivinheima and Paraná, was quantified with the image processing Landsat 5 TM, of the year 2000, period of sampling of the biological material at each river. The assimilation of the energy sources (riparian vegetation and C3 aquatic macrophytes, C4 aquatic macrophytes, periphyton, and phytoplankton) by P. lineatus was determined by analysis of stable carbon isotopes (δ13C). The area of vegetal cover was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Primary producer; Remote sensing; Stable isotopes; Fish Ecologia. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19820 |
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| Gimenes, Michele de Faveri; Universidade Estadual de Maringá; Takeda, Alice Michiyo; Universidade Estadual de Maringá; Benedito, Evanilde; Universidade Estadual de Maringá. |
| This study aimed to identify potential sources of organic matter in sediment, using stable isotopes of carbon (delta13C) and nitrogen (delta15N). Sediment samples were gathered from the margin and in center of three subsystems: Ivinheima, Paraná and Baia, in August/2001. The samples were fractionated granulometrically and separated by size (< 200 µm; 70-200 µm; > 70 µm), prepared and sent to CENA / USP, for identifying the isotopes proportions. Significant differences were detected in the isotopic ratios of the sediment only between sampling stations. The Baía channel presented the lowest delta13C values, while the highest ones were recorded in Paraná river. At this last, delta15N values were negative (-14.41‰). We did not verify significant... |
| Tipo: Ecologia |
Palavras-chave: Www.cnpq.br/areasconhecimento/2.htm energy flow; Delta13C; Delta15N Ecologia. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9335 |
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| André, Edison Sanfelice; Bruno-Neto, Rafael; Valle, Angela Cristina do; Timo-Iaria, César. |
| Possible interactions between the sleep-wakefulness cycle and a new kind of spontaneous epilepsy, expressed as absence-like seizures and spike-wave bursts in FMUSP rats, are evaluated. The electro-oscillograms of some cortical and subcortical regions of the brain were recorded, as well as head, rostrum/vibrissae and eye movements. Recordings were performed uninterruptedly during 24 hours. The seizures were mostly concentrated in the wakefulness state but they could occur in any other phase, including paradoxical sleep. After the seizure, the rats usually returned to the same phase that was interrupted, although they often returned to wakefulness. There was an intense fragmentation of the sleep-wakefulness cycle. The incidence of each cycle phase was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.07.02.01-9 epilepsy; Absence seizures; Spike-wave; Sleep; Wakefulness; Rats Neurofisiologia. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/26908 |
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| Mormul, Roger Paulo; Universidade Estadual de Maringá - UEM; Padial, André Andrian; Universidade Federal de Goiás & Instituto Federal de Educação, Ciência e Tecnologia do Mato Grosso do Sul. |
| Fractals seemed to have permeated most scientific fields, including ecology. In fact, biodiversity and ecological processes are affected by spatial complexity, and fractals can help understand patterns at multiple scales. In this paper we evaluated the main quantitative trends and the profile of ecology publications using fractals. Publications about fractals in Ecology experienced a high increase in the last two decades, and most articles were published in highly visible ecology journals. However, studies were authored mainly by US scientists, and researchers from developing countries had a minor contribution. In addition, studies were highly biased towards terrestrial environments, and empirical approaches were preferred. |
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Palavras-chave: 2.05.00.00-9 Fractal geometry; Ecology; Spatial complexity; Scientometrics Ecologia fractal geometry; Ecology; Spatial complexity; Scientometrics Ecologia. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7701 |
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| Mantovani, Daniel; Universidade Federal do Paraná; Cardozo Filho, Lúcio; Universidade Estadual de Maringá; Santos, Leonilda Correia; Unversidade Estadual do Oeste do Paraná; Souza, Vera Lúcia Ferreira de; Universidade Estadual de Maringá; Watanabe, Cecilia Sumie; Universidade Estadual de Maringá. |
| Nowadays, there is a great interest in the research and the production of functional foods, such as isoflavones. Which present proven action on the prevention of health problems, such as cancer and cardiovascular diseases. Considering the importance of soybean supplements standardization, this study aimed identifying and quantifying the isoflavones in products sold at different pharmacies. Isoflavones samples were acquired in six different pharmacies specialized in the production of phytotherapic medications. The isoflavones were extracted, quantified and identified in HPLC. None of the samples, from different pharmacies, presented the isoflavones content presented on the label, i.e., 20 mg. In relation to the isoflavones profile, the highest levels found... |
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Palavras-chave: 2.08.00.00-2 Daidzein; Genistein; Functional compounds; Soybean; Quantity bioquimica Daidzein; Genistein; Functional compounds; Soybean; Quantity. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/6876 |
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| Abdallah, Vanessa Doro; Universidade Federal Rural do Rio de Janeiro; Azevedo, Rodney Kozlowiski de; Universidade Federal Rural do Rio de Janeiro; Luque, José Luis Fernando; Universidade Federal Rural do Rio de Janeiro. |
| Current essay describes three new Monogenean species, namely, Cosmetocleithrum striatuli sp. nov., Jainus leporini sp. nov. and Rhabdosynochus guanduensis sp. nov., parasites on the gills of Trachelyopterus striatulus (Steindachner, 1877), Leporinus copelandii Steindachner, 1875 and Centropomus undecimalis (Bloch, 1792), respectively. Fish were collected from the Guandu river, State of Rio de Janeiro, Brazil between August 2005 and November 2008. Cosmetocleithrum striatuli sp. nov. differs from all other congeneric species by the shape of an accessory piece (more robust and resembling a crustacean claw or chela) and by the shape of its ventral and dorsal bars (not V-shaped and with expanded lateral ends directed to the rear). Jainus leporini sp. nov.... |
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Palavras-chave: 2.03.00.00-0 Centropomus undecimalis; Cosmetocleithrum striatuli sp. nov.; Jainus leporini sp. nov.; Rhabdosynochus guanduensis sp. nov.; Trachelyopterus striatulus; Leporinus copelandii 2.13.00.00-3. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10466 |
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| Carvalho, Adriano Reder de; Universidade Federal Rural do Rio de Janeiro; Luque, José Luis Fernando; Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais. |
| Three new species of monogeneans parasitic on the gills and esophagus of Trichiurus lepturus (Linnaeus, 1758) in the Southern Brazilian coast are described herein. Between July 2006 and June 2007, 120 specimens of T. lepturus were acquired from local fishermen in Guanabara Bay (23°1’52”S, 43º11’56”W), Rio de Janeiro State, Brazil. Pseudempleurosoma guanabarensis sp. nov. (Dactylogyridae) presented 15% prevalence and mean intensity 1.8, and differs from all congeners by presenting larger body, largest rectangular dorsal bar, and larger MCO with muscular sheath in the base. Encotyllabe souzalimae sp. nov. (Capsalidae) showed 7.5% prevalence and mean intensity 1.3, differs from all congeners by the size and position of the... |
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Palavras-chave: Monogenea; Pseudempleurosoma; Encotyllabe; Octoplectanocotyla 2.13.02.02-2. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10360 |
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| Souza, Hilton Marcelo de Lima; Barreto, Lindimar Rosas; Mota, Adolfo José da; Oliveira, Luiz Antônio de; Barroso, Hileia dos Santos; Zanotto, Sandra Patricia. |
| Tolerance to Polycyclic Hydrocarbons Aromatic (PAHs) is considered an important characteristic when assessing the bioremediation potential of microorganisms. Given this, the objective of this research was to assay filamentous fungi from the Amazon region, isolated from sediments with differents levels of contamination by PAHs, for tolerance to phenanthrene and pyrene. To achieve this, fungal cultures plugs (5 mm), obtained after 7 days growth, were transferred to petri dishes containing 20% Sabouraud dextrose agar medium, after surface innoculation with phenanthrene and pyrene crystals, separately. Radial mycelial growth was evaluated after 10 days at five different concentration levels for each contaminant and control group, all in triplicate for each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.12.00.00-9 phenanthrene; Pyrene; Fungal growth inhibition; Amazon. Microbiologia ambiental. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34709 |
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| Lima, Fabiano Campos; Universidade Federal de Uberlândia; Santos, André Luiz Quagliatto; Universidade Federal de Uberlândia; Lima, Betania Carvalho; Universidade Federal de Uberlândia; Vieira, Lucélia Gonçalves; Universidade Federal de Uberlândia; Hirano, Líria Queiroz Luz; Universidade Federal de Uberlândia. |
| To gain an understanding of the detailed anatomical aspects of Mazama gouazoubira (brocket deer), this paper describes the relationships between its spinal cord and the vertebral canal, adding information with a clinical and surgical approach. Three specimens of M. gouazoubira were prepared following the methods normally used in anatomy. The epaxial muscles and vertebral arches were removed to expose the spinal cord and the spinal nerve roots. The dimensions of the medullary segments were measured using a pachymeter with 0.05 mm precision. The spinal cord is cylindroidal, dorsoventrally flattened, with an average craniosacral length of 656.27 mm, and has two dilatations corresponding to the cervical and lumbar intumescences. The cervical, thoracic, lumbar... |
| Tipo: Estudos morfológicos |
Palavras-chave: 2.06.04.02-5 brocket deer; Neural system; Skeletopy; Spinal cord Anatomia Animal brocket deer; Neural system; Skeletopy; Spinal cord. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5061 |
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| Venturini, Francine Perri; FCAV/UNESP; Cruz, Claudinei da; UNESP; Pitelli, Robinson Antonio; FCA/UNESP. |
| Os caramujos podem se tornar um problema ambiental e econômico, podendo causar muitos prejuízos. O trabalho teve como objetivo estimar a toxicidade aguda do sulfato de cobre pentaidratado (CuSO4.5H2O) e do extrato aquoso de folhas secas de nim para o P. canaliculata, em condição de laboratório. Para determinação da CL (I)(50;96h), o caramujo foi exposto a seis concentrações crescentes de sulfato de cobre (0,0; 0,01; 0,03; 0,05; 0,07 e 0,1 mg L-1) e a seis concentrações crescentes de extrato aquoso de folhas secas de nim (0,0; 100; 125; 150; 175 e 200 mL de extrato aquoso de folhas secas de nim L-1 de água), equivalente a 0,0; 1,18; 1,47; 1,77; 2,06; e 2,36 mg de azadiractina L-1, com três repetições e um tratamento-controle em um experimento no... |
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Palavras-chave: 2.00.00.00-6 Ciências Biológicas concentração letal; Molusco; Pesticida natural; Cobre 2.05.00.00-9 Ecologia. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3615 |
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| Henares, Matheus Nicolino Peixoto; UNESP; Cruz, Claudinei da; UNESP; Gomes, Gabriela Roncada; UNESP; Pitelli, Robinson Antonio; UNESP; Machado, Marcia Rita Fernandes; UNESP. |
| A concentração letal 50% e os efeitos histopatológicos do herbicida diquat para a tilápia nilótica (Oreochromis niloticus) foram avaliados em três experimentos. Os peixes foram expostos às concentrações de 0; 25; 30; 35; 40; 45; 50; 55; e 60 mg de diquat L-1 e a histologia da brânquia e do fígado foi avaliada nos peixes sobreviventes. A CL (I) 50-96h do diquat estimada foi de 37,28 mg L-1, com limite inferior de 33,12 mg L-1 e superior de 41,44 mg L-1. No tratamento com 30, 35 e 40 mg L-1, ocorreram início de fusão apical das lamelas secundárias; com 45 e 50 mg L-1 ocorreram congestão nas lamelas primárias e no tratamento com 55 mg L-1, ocorreu congestão sangüínea nas lamelas secundárias. O fígado dos peixes dos tratamentos controle, 30 e 35 mg L-1 estavam... |
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Palavras-chave: 2.07.01.00-4 Fisiologia Geral brânquia; Fígado; Concentração letal; Histopatologia; Peixe teleósteo; Herbicida 2.07.01.00-4 Fisiologia Geral. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1462 |
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| Registros recuperados: 1.256 | |
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