Brazilian Journal of Biological Sciences最新文献

{"title":"Olive oil quality influenced by biostimulant foliar fertilizers","authors":"I. Zouari, B. Mechri, M. Tekaya, Olfa Dabbaghi, I. Cheraief, A. Mguidiche, K. Annabi, F. Laabidi, F. Attia, M. Hammami, M. Mezghani","doi":"10.21472/bjbs(2020)071501","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071501","url":null,"abstract":"Foliar fertilization has been used as an important tool to meet the tree nutrient demand and to be an environmental beneficial with the use of little quantities. Actually modern fruit trees physiology is focused on the stimulation of plant cell development and fruit production using biostimulants. In olive trees, few products have been used for improving oil quality. For this purpose, two biostimulants products have been tested and used simple or combined with a third product rich in nitrogen. The treatments were classified to: T1 (rich in nitrogen) and biostimulants treatments as following T2 (combination of boron, magnesium, sulfur and manganese associated with seaweed) TNi (biostimulant combining a protein extract with a calcium base), T12 (combined application of T1 and T2) and finally T12Ni (combined application of T1, T2 and TNi) with a control treatment CON (without foliar fertilization). All these foliar nutrients were sprayed during two successive years on trees issued of Chemlali cultivar cultivated in rain-fed conditions of central Tunisia. Biochemical parameters of the olive oil, like physiochemical characteristics, fatty acid profile total polyphenols, ortho-diphenols, chlorophyllic and carotenoids pigments were analyzed annually after the application of these foliar compounds. All the olive oils issued from the treatments were classified as extra virgin and the physiochemical parameters were sensitive to foliar fertilization except for some parameters. Quantitative changes were observed in the pool of the fatty acids composition and the treatment TNi (rich in Received November 21, 2019 Accepted March 11, 2020 Available on line on March 20, 2020 Released April 30, 2020","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"2 1","pages":"3-18"},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84447453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isolation and characterization of some flavonoids from the leaf of Tapinanthus globiferus growing on Vitex doniana","authors":"H. Abubakar, A. Musa, M. Abdullahi, V. Mzozoyana, A. Yusuf","doi":"10.21472/BJBS(2020)071701","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071701","url":null,"abstract":"Tapinanthus globiferus (A. Rich) Tiegh (Loranthacae) is a semi-parasitic plant growing on several plant species such as Vitex doniana. it is used in ethno-medicine for the treatment of fungal infection, itching, hypertension, ulcers, epilepsy, diabetes and cancer. The aim of this study was to isolate bioactive compound(s) from the leaf of T. globiferus. The powdered plant material was extracted with 90% methanol using maceration method and the resulting crude methanol leaf extract was partitioned into n-hexane, chloroform, ethylacetate and n-butanol fractions. The ethylacetate fraction was chromatographed on a silica gel and sephadex LH-20 column which led to the isolation of two flavonoids, and the identity of the compounds was determined on the basis of chemical test and NMR analysis. Based on the 1D and 2D NMR data, the compounds were 2-(3’4’-dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromane-4-one (quercetin) and 2-(2,4-dihydroxyphenyl)-5,7-dihydroxy-3-(3-methylhexyl)-4H-chromen-4-one. This is the first report of isolation of these compounds from T. globiferus growing on Vitex doniana.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77677868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impacts of gender education on female entreprenuership: Breaking the glass ceilings for a prosperous new Nigeria","authors":"Grace A.T. Scent, Christian Chima Chukwu, Obuzor Mezewo Emerinwe","doi":"10.21472/bjbs(2020)071509","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071509","url":null,"abstract":"Gender education and entrepreneurship have become worldwide phenomena for women, particularly in patriarchy societies where all kinds of discriminations, subjugation against them are frightening realities of contemporary times. As a result, female entrepreneurship has been weighed down by poor education, social norms, and lack of access to free credit facilities. It is in this context that this paper examines the impacts of gender education on female entrepreneurship in Enugu urban, Enugu state, Nigeria. A survey design was employed and 300 respondents were selected using the simple random sampling technique. Out of this number of respondents, only 280 (90.33%) structured questionnaire were returned and analyzed using both quantitative and qualitative methods. The distribution of the respondents showed 210 (75%) were female entrepreneurs, while 70 respondents (25%) were male entrepreneurs. Among the findings, an overwhelming majority of the respondents are of the view that the female entrepreneurs are important for the socio-economic transformation of the Enugu State, and by extension, Nigeria. Secondly, the study agrees that there is hardly a society where gender stereotypes do not exist but that these aspects of the gender belief system which are antifemale entrepreneurs’ development have been over taken by the power of gender education. In addition, the study shows that gender education is the most viable and veritable vehicle for guaranteeing and sustaining female entrepreneurs to continue to expand entrepreneurship in Nigeria. Thirdly, this study has presented a different picture of women making some tremendous efforts in spite of all odds cannot be underestimated because their contributions have been remarkable despite the challenges they face in their quest to transform the patriarchal Igbo society, especially Enugu State. Based on this, the study concludes that the contributions of female entrepreneurs in Nigeria’s entrepreneurship development cannot be underestimated Received","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"101 1","pages":"79-100"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79329427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pregnant mice submitted to Surgical Embryo Euthanasia (SEE) induce loss of expression of inducible nitric oxide synthase isoform and NO concentration in the maternal-fetal interface","authors":"Lidia Jacinta Nunes Fernandes, E. Lippe","doi":"10.21472/bjbs(2020)071507","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071507","url":null,"abstract":"The well-succeeded pregnancy in humans and rodents is the consequence of close interaction between maternal and fetal cells with intervening of cytokines and chemical mediators. In this process a pregnant uterus subset NK cells - uterine Natural Killer cells (uNK cells) play a pivotal modulatory role under the influence of local physiological hypoxia and other alterations. The aim of the present work was to evaluate the expression and commitment of induced form of nitric oxide synthase (iNOS) and NO concentration in the homeostasis of pregnant uterus. It was used normal pregnant mice on gd 10th and those submitted to surgical intervention to induce mechanical lesion in the embryos (SEE). Uterine samples were collected at 0.5, 1, 2 and 6 h after embryo lesion and processed for paraffin embedding and tissue homogenate. The samples destinate for paraffin embedding was performed the Dolichos biflorus (DBA) lectin cytochemistry and anti-iNOS immunocytochemistry. The samples destinate to tissue homogenates were processed for SDS-PAGE and Western-blot using anti-iNOS and evaluate of NO concentration. The embryo-injured uterine segments showed hyperemia and hemorrhage at mesometrial region in which the DBA lectin reaction showed altered uNK cells suggesting the degranulation. Positive reaction with anti-iNOS was seen on uNK cells, trophoblast giant cells, endometrial stromal and decidual cells and smooth muscle cells in the normal pregnant uterus, but 1 and 2 h after embryo lesion, the iNOS labeling decreased or was absent only in uNK cells. The same results was obtained with NO concentration. These results confirm the unique constitutive expression of iNOS in the pregnant mice uterus, being the uNK cells the only one responsive against stress of embryo failure, besides showing that excessive NO produced by quick activation of uNK-iNOS should affect the local vascular permeability.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84905522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Murraya koenigii (L.) Sprengel (Rutaceae) extracts on lifespan and oxidative stress markers in Drosophila melanogaster Meigen, 1830 (Diptera)","authors":"Dinesh Kumar, S. Sunita, V. Bhan","doi":"10.21472/bjbs(2020)071506","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071506","url":null,"abstract":"The free radicals (ROS and RNS) damage to proteins, DNA, lipids of the cell. These free radicals creates the imbalance in physiological functions and acts as a prevalent cause of various diseases such as cancer, diabetes, cardiovascular diseases, aging, oxidative stress and metabolic syndrome by dysfunction of antioxidant enzyme system of cell. Using the fruit fly Drosophila melanogaster Meigen, 1830 (Diptera) as a model we examined the antioxidant properties of Murraya koenigii (L.) Sprengel (Rutaceae) on the life history parameters. We demonstrate a novel physiological interaction between free radicals, oxidative stress and antioxidant enzyme system by using extracts of M. koenigii in standard diet of the fly. This study describes how this interaction impacts a very early cellular defect associated with ageing and ageing associate diseases. We also describe progressive deficits in flies expressing the superoxide dismutase gene, catalase and lipid peroxidation. Collectively, our work demonstrates that Drosophila can be used to study the cellular, physiological and behavioral basis of human ageing related diseases.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77175119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phytochemical screening and antifungal potency of Vernonia amygdalina (bitter leaf) extract against post harvest mycodeterioration of tomato (Lycopersicum esculentum)","authors":"U. N. Emiri, E. Enaregha","doi":"10.21472/BJBS(2020)071708","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071708","url":null,"abstract":"The study investigated fungi associated with post harvest tomato fruits sold in the open market in Port Harcourt Metropolis. The antifungal activity (bitter leaf) extracts against spoilage was studied using well-in-agar diffusion method. Results showed that mean percentage incidence of fungi isolated from tomato fruits were Rhizopus stolonifer (56%), Aspergillus niger (62%) and Altermaria altermata (35%). Aqueous and ethanolic extracts of Vernonia amygdalina at different concentrations (20%, 40%, and 60%) (w/v) were used against fungi isolates, while water and ketoconzole (0.5 mg/mL) served as negative and positive control, respectively. Aqueous and ethanolic extracts of V. amygdalina inhibited the growth of all three test fungi. There were significant differences (p > 0.05) in the mean inhibitory effects of plant extracts and control. Antifungal activity measured as diameter of zone of inhibition revealed that V. amygdalina acqueous extract at 60% was very active against Aspergillus niger (16.50 mm) and Alternaria altermata (16.00 mm), while being moderately active against Rhizopus stolonifer (13.00 mm). However, 60% ethanolic extract of V. amygdalina was very active against A. niger (19.00 mm), A. altermata (17.00 mm) and Rhizopus stolonifer (15.80 mm). Phytochemical screening of V. amygdalina revealed the presence of tannins, oxalate, saponnins, flavanoid, cynogenic glucoside, phytate and Alkaloids V. amygdalina could serve as a potentially viable alternative to chemical fungicides in the preservation of post harvest tomato fruits (Lycopersicum esculentum).","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88465057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Body lifting, flattening, and burying of Tropidurus catalanensis Gudynas & Skuk, 1983 (Squamata, Tropiduridae): Defense, thermoregulation, or both?","authors":"T. Maia-Carneiro, C. Navas","doi":"10.21472/BJBS(2020)071709","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071709","url":null,"abstract":"Lizards of the genus Tropidurus display different behaviors for thermoregulation and defense. Here, we report new displays for Tropidurus catalanensis, which helps to understand how these lizards behave. Captive individuals lifted, flattened, and buried their bodies. Flattening and upstanding the bodies allow looking larger and may discourage attacks, as well as respectively enhance and decrease the approximation and the contact of body surfaces with substrates to thermoregulate. Burying themselves into earth and sand may help lizards to avoid or escape from menaces. When we first opened the containers, the T. catalanensis were already partially covered by vermiculite, which did not allow stating if they did it in response to supposed risks of predation because perceived the movements in the room or were already buried. Tropidurus catalanensis possibly may bury themselves to avoid detection during periods of inactivity. The self-burying behavior may be useful also for thermoregulation using substrate temperatures. Tropidurus catalanensis may increase the chances of getting out safe from dangerous interactions and of effective thermoregulation by performing such behaviors. Although we discussed the behaviors on the views of defense and thermoregulation, the body lifting, the flattening, and the burying seemed have occurred in a defensive context.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91193523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ichthyofaunal composition and diversity of Stubbs Creek, Ibeno, in Akwa Ibom State, Nigeria","authors":"H. R. Anwan, M. Anetekhai","doi":"10.21472/BJBS(2020)071705","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071705","url":null,"abstract":"The fish abundance and distribution of Stubbs Creek were examined in order to provide information for the management and sustainable exploitation of the ecosystem services. Fish samples obtained from the fishermen landing sites were identified using FAO species identification guide. Data were analyzed using descriptive statistics. Species diversity and community abundance were determined using Shannon-Weiver diversity index (H) and Margalef's species richness (d). Twenty nine fish species, twenty two genera in nineteen families and eight orders were identified from the three landing stations during the study. Station 1 (Iwokpom) recorded the highest taxa (24) consisting of 993 fishes (43.14%) of the total catch. Landing site 2 (Iwuchang) and 3 (Ubenekang) both recorded 22 taxa each comprising 556 (24.15%) and 753 (32.71%) fishes, respectively. Iwokpom recorded the highest diversity in fish species d = 3.333, but the lowest general ecosystem diversity (H = 2.781). Ubenekang (Station 3) had the lowest species richness d = 3.17, but recorded the highest biodiversity (H = 2.839) in the study. Evenness was generally high among the stations but Iwopom recorded the lowest value of e = 0.6722 and Ubenekang had the highest, e = 0.7769. Iwuchang (Station 2) came next to Iwopon in species richness d = 3.322, but was next to Ubenekang in general diversity (H = 2.833) and evenness e = 0.7725, respectively. The present study indicated that stub creek is rich in fish biodiversity. Therefore users of this water body should maintain responsible fishing activities in order to conserve this biodiversity.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87974998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fisheries of Ilaje Community, Badagry, Lagos, Nigeria","authors":"O. A. Osodein, M. Anetekhai","doi":"10.21472/BJBS(2020)071703","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071703","url":null,"abstract":"This study examined the fisheries of Ilaje Fishing Community, Badagry, Lagos State. The species composition, length-weight relationships, correlation parameters of landings, fishing gears and crafts, post-harvest technology and socio-economic profile of Fishermen were investigated. Species were sampled fortnightly from July to December, 2017 and respondents were sampled with structured questionnaire and discussion with key informants and focused group. The slope (b) values obtained for the 36 fish species from 22 families ranged from -1.5826 to 8.4126 with most of the fish species having negative allometric growth. Lowest condition factor (K) (0.321) was recorded in Trichiurus lepturus (Trichiuridae) while the highest value (20.304) was observed in Calappa rubroguttata (Calappidae). Majority of the canoe are motorized by 40 horse powered engine, with the fish species captured preserved with the use of traditional smoking kiln, while socioeconomic status of the fisherfolks is concluded to be average/low. Output of analyses of length and weight measurement of some species, which were landed in Ilaje Fishing Community, Badagry, Lagos State, Nigeria, which have not been reported, are available for referrer for further studies.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"56 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91486025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of jamun Syzygium cumini seed and orange Citrus sinensis peel extracts against microcystin LR induced histological damage in the kidney of rat","authors":"B. D. Srivastava, M. Srivastava, M. Urata, Nobuo Suzuki, A. Srivastav","doi":"10.21472/BJBS(2020)071702","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071702","url":null,"abstract":"In this study we evaluated the protective effects of jamun Syzygium cumini seed and orange Citrus sinensis peel extracts on renotoxicity of microcystin LR in male rats. Groups A-F were given daily treatments for 30 days. Group A (Control): No treatment was given; Group B: microcystin (10 µg/kg body wt); Group C: microcystin (10 µg/kg body wt) and jamun seed extract (200 mg/kg body wt); Group D: microcystin (10 µg/kg body wt) and orange peel extract (200 mg/kg body wt; Group E: orange peel extract (200 mg/kg body wt); Group F: jamun seed extract (200 mg/kg body wt). Kidney were fixed at 15th and 30th day after the treatments. In 15 day MCLR (group B) treated rats shrunken glomeruli, hypertrophy of epithelial cells of tubules. vacuolation of cytoplasm and obliterated tubular lumina were noticed. In MCLR+JSE (group C) and MCLR+OPE (group D) treated rats almost similar changes were noticed as seen in MCLR treated rats. In OPE (group E) and JSE (group F) treated rats no visible morphological alterations were nojticed. Following 30 day MCLR treatment (group B), increased cellularity of glomeruli, no space between the Bowman's capsule and glomerulus, glomerular degeneration, dilated tubules, separation of tubular epithelial cells from underlying basement membrane, tubular vacuolization and degeneration with necrotic nuclei in lumina and deposition of eosin-positive material in the tubules were observed. In MCLR+JSE (group C) and MCLR+OPE (group D) treated rats the glomeruli were swollen showing increased cellularity. No degeneration was noticed in glomeruli. Tubules were dilated, however, at few places few epithelial cells were degenerating. Necrotic nuclei were not seen in tubular lumina. In OPE (group E) and JSE (group F) treated rats the kidney exhibited no histological changes.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78425361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}