Brazilian Journal of Biological Sciences最新文献

{"title":"Growth behaviour and metal accumulation of two varieties of maize Zea mays L. sown on a soil obtained from a mining site","authors":"S. Abiya, G. Ogunwole, B. Odiyi, A. Olanrewaju","doi":"10.21472/bjbs(2020)071503","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071503","url":null,"abstract":"A screen house study was conducted to evaluate the effect of gemstone mining on the growth behaviour of maize Zea mays L. A completely randomized design involving two samples of soil (FUTA (control) and Ijero (mined soil)), two varieties of the maize (TMZ234 and Sammarz 39) was used. The seeds were sown into experimental pots containing the soils and the whole set up was left for eight weeks. Growth parameters (plant height, leaf area and stem girth were taken at a weekly basis up till the eight week. Eight heavy metal (Cd, Cu, Cr, Fe, Ar, Zn, Pb and Ni) concentration in the soils, roots and shoots of the plants was determined at the end of the experiment using atomic absorption spectrophotometer. Baseline data indicates that the mined soil is acidic (pH 4.12), with low organic carbon (0.92), low organic matter (1.59) and low total nitrogen (0.76). Results obtained from this study show that all growth parameters were negatively affected by the mined soil. Plant height was significantly higher in the control varieties (82.28 and 40.46, respectively) when compared with the mined soil varieties (30.5 and 29, respectively) at 8 weeks after planting (WAP). Leaf area also followed the same pattern with varieties grown on control soil having significantly higher leaf area (48.22 and 25.22, respectively) than varieties grown on mined soil (19.08 and 19, respectively). Stem girth of variety TMZ234 in control soil was also significantly higher than the rest (2.24 as against 1.68, 1.5 and 1.74). Heavy metals concentration in the soil, shoot and root of the plants grown in mined soils were all higher than in those grown on control soils. In the soil, Cr, Ni and Pb were 0.24, 0.15, 0.10 and 0.20, 0.13, 0.10, respectively, in both varieties grown on mined soils as against 0.03, 0.01, 0.00 and 0.03, 0.08, 0.00 for Cr, Ni and Pb, respectively, for both varieties grown on control soils. Bioaccumulation and translocation factors for the metals were less than 1 in all the soils except for Ni which had BCF of 2.80 and 6.90 for both varieties grown in the control soils. The results from this study has shown the negative effect of gemstone mining activities on the growth of two varieties of Zea mays.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89802777","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":"Defensive behaviors of Tropidurus catalanensis Gudynas & Skuk, 1983 (Squamata, Tropiduridae)","authors":"T. Maia-Carneiro, Simone Langie-Santos, C. Navas","doi":"10.21472/bjbs(2020)071504","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071504","url":null,"abstract":"Tropidurus catalanensis Gudynas & Skuk, 1983 (Squamata, Tropiduridae) is a lizard species found in Argentina, Paraguay, Uruguay, and Brazil. Here, we present defensive behaviors performed by T. catalanensis, adding information about how these lizards avoid predation. Our observations were in an introduced urban population in the State of São Paulo, Brazil, where individuals performed immobility, locomotor escape by running and climbing, squirreling, tail waving, tail lifting, mouth opening, forced escape, and cloacal discharge. When approached by the potential predator, T. catalanensis tended to stay immobile, but always ran off with further approximation. After locomotor escape, some individuals displayed squirreling - i.e., flight from a side of tree or rock towards the opposite side of it - in order to conceal their presence and difficult visual detection. After flight, a T. catalanensis performed squirreling in a tree and climbed it along the trunk and a limb reaching a height of almost 6 m from the ground, which might difficult or impede capture by predators coming from below. Other individuals of T. catalanensis also did squirreling climbing up to lower heights on lower trees. When manipulated, a T. catalanensis undulated its tail trying to distract the potential predator in order to escape. Another T. catalanensis lifted its tail, which might also serve as a distraction to predators besides deceiving them by making a lizard look longer and/or bigger. While handled, some T. catalanensis opened their mouths in a threatening display and forced freeing. After capture, T. catalanensis discharged intestinal contents out of their cloaca. Discharges had solid and liquid fractions and repulsive taste and smell. The defensive behaviors reported here are likely advantageous for escaping and increasing chances of survival of lizards.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74840847","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":"Violence against women as an obstacle to women's productivity in Nigeria: A challenge to recreate contemporary Nigerian society","authors":"Christian Chima Chukwu, I. S. Ume","doi":"10.21472/bjbs(2020)071508","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071508","url":null,"abstract":"Women’s lives and their bodies have been the unacknowledged casualties of men for too long. As a result of violence perpetrated against them, their productivity in workplaces have decreased over time. Understanding that productivity improvement is a key objective for industries, the thrust of the study is, therefore, to evaluate, from a sociological perspective, the consequences of violence on women’s productivity in contemporary Nigerian society. A sample 595 respondents was selected through the multistage sampling techniques amongst working class women. The questionnaire was subjected to face and content validation by experts from gender and women studies. Chi-square was adopted to test the hypotheses at 0.05 levels of significance. Findings reveal that violence against women disrupts women’s lives, destroys their health, undermines their confidence, and takes away their psychological sense of esteem, as well as undermines their full participation in social life. Secondly, the study show that women make several medical visits every year to treat injuries resulting from assaults by spouse thereby limiting the number of hours spent in the office. Essentially, violence against women lessens the woman’s inability to work and promote productivity. Based on this, the study concludes that since women represent an important population group in Nigeria, there is an urgent need to address marital violence against them, particularly those in the formal sector of the economy because they make meaningful contributions to the overall labour force and general societal well-being of all and sundry. In view of this, the study recommends, amongst others, that government through state and non-state actions should ensure the strict enforcement of laws that protect women’s rights, as well as deter their partners from subjecting them to violence. In addition, educational and religious institutions should re-orientate men to be more accommodating in their relationship with their women partners on the ills associated with marital violence particularly wife abuse, with a view to getting them unlearn such violent behaviours. Finally, there is a need for advocacy and concerted action that will involve the educational, health, civil and religious sectors of the society to evolve sustainable structures that will empower women and Received","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"6 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":"83738850","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":"Host-parasite translocation: A potential source of zoonoses emergence in Nigeria","authors":"T. Arotolu, A. O. Oladejo, A. Arojo","doi":"10.21472/BJBS(2020)071704","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071704","url":null,"abstract":"Zoonoses are infectious diseases that are spread between animals and people. These diseases are transmitted to humans in many ways, such as direct contacts, indirect contacts, vector-borne, foodborne, and inhalation. Translocation and introduction of animals to new geographic regions correspond to increased human global travel and commerce as underlying factors for infectious disease emergence. In this review, we examined some potential notable driving mechanism of zoonosis in Nigeria. The population explodes, and demand for animal products has resulted in the expansion of animal trade, both local and international, animal and human movements, and intensification of livestock production systems. The above mentioned have an indirect role in zoonotic disease distribution. Animal husbandry, wildlife hunting, and hunting with dogs are potential routes of parasite translocation, most notably when infected animals are killed. Zoonotic diseases cause severe economic loss in the pathogenic spoilage of milk, contaminated animal products, carcass quality, weight loss, infertility, and loss of animal population. The cost of disease control decreases in household income due to a reduction in livestock/product sales. Also, consumption impacts due to reduced food availability, increased household vulnerability where livestock is used as a risk-coping mechanism, and effects on household finance, which influences household savings. Our suggestions for future effective zoonoses control include, an improved surveillance system, well-structured quarantine services, institutionalized one health approach, public enlightenment, interdisciplinary research, and ultimately a strict conservation rules and regulation may be turned into law to avoid transmission of Zoonosis through the consumption of wild animal which is most reservoir of causative pathogen.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"30 1","pages":"283-295"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85641623","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":"Assessment of the haematological parameters and biochemical indices of albino rats fed with spores of Trichoderma viride","authors":"E. A. Ekundayo","doi":"10.21472/BJBS(2020)071707","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071707","url":null,"abstract":"The haematological as well as some enzymes biomarkers of albino rats orogastically dosed with different concentrations of Trichoderma viride as well as T. viride subjected to various treatments were evaluated. Generally, red blood cell count, haemoglobin content and packed cell volume of the control group were significantly higher than that of animals dosed with different concentrations of T. viride. The same trend was observed when T. viride was amended with 1% lactose, sodium nitrate and sodium chloride. There were no significant differences in the alanine aspartate, alkaline phosphatase and alanine transaminase values of animals dosed with lower concentrations of T. viride. This study suggests that lower concentration of T. viride could be used in controlling fungal phytopathogens.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90542060","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":"Nutritional, phytoconstituents, and free radical scavenging potentials of Cola lepidota K. Schum. and Irvingia gabonensis (Aubry-Lecomte ex O'Rorke) Baill. leaves","authors":"Agada Adaeze Bob-Chile, P. Amadi","doi":"10.21472/bjbs(2020)071505","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071505","url":null,"abstract":"This study was carried out to determine the essential oil components, protein qualities, fatty acid composition, and free radical scavenging potentials of leaves of Cola lepidota K. Schum. (Malvaceae) and Irvingia gabonensis (Aubry-Lecomte ex O’Rorke) Baill. (Irvingiaceae) using chromatographic and spectrophotometric methods. Thirty five bioactive components were isolated from C. lepidota leaves with myrcene, phytol, ephedrine, hexadecanoic acid, and 1,14-tetradecanediol as the main compounds while phytol, 2-furancarboxaldehyde, 5-(hydroxymethyl)-, 1-hexadecyne, carotene, and humulene were the predominant components of the I. gabonensis leaves. Leucine and arginine were the predominant essential amino acids, whereas glutamic acid and serine were the main nonessential amino acids in both leaves. The total amino acid (TAA) (70.92 g/100g), total non-essential amino acid (TNEAA) (45.87 g/100 g), and total acidic amino acid (TAAA) (23.01 g/100 g) of C. lepidota were high whereas I. gabonensis recorded higher Total essential amino acid (TEAA) (28.98 g/100 g), total aromatic amino acid (TArAA) (7.21 g/100 g), total branched chain amino acid (TBCAA) (14.28 g/100g), predicted protein efficiency ratios (P-PERs), and essential amino acid index (EAAI). C. lepidota contained 55.72% of unsaturated fatty acids, with predominance of linolenic and linoleic acids, while I. gabonensis produced 74.46% of saturated fatty acids, having myristic, lauric, and palmitic acid as the main compounds. All the radical scavenging potentials of both leaves were concentration dependent and produced higher DPPH, hydrogen peroxide, and ABTS radical scavenging potentials than the standards. This study has thus provided the scientific backing for the inclusion of both leaves for dietary and therapeutic purposes.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"25 1","pages":"43-57"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81716742","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":"Effects of nickel on growth and the reproductive organs of Vicia faba plants","authors":"Sondes Healoui, I. Boughattas, Sabrine Hattab, Marouane Mkhinini, M. Banni","doi":"10.21472/BJBS(2020)071706","DOIUrl":"https://doi.org/10.21472/BJBS(2020)071706","url":null,"abstract":"High concentration of nickel (Ni) could provoke numerous toxic effects in plant tissues. The present study was undertaken to determine the effects of nickel (Ni) treatment on agronomic and production parameters of bean plants (Vicia faba). For that, plants were treated with four increasing concentrations of Ni: control: 0 mg/kg, C1: 150 mg/kg, C2: 250 mg/kg, and C3: 500 mg/kg. The effects of these Ni concentrations on growth, dry matter, pollen germination and viability, flower number and yield per plant were determined in bean plants. Our data demonstrated that Ni caused threats to plant growth and development. Also, our results showed a substantial reduction of pollen germination and viability in different concentrations of Ni loads. Furthermore, a clear negative effect of nickel was observed in fruit weight and seed set. Our study must be carefully considered in view of soil contamination and its subsequence effect on crop production.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78098933","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":"Biochemical changes in Mucuna sloanei (ukpo) seeds induced by six pathogenic fungi and comparative analysis of the pathogenic fungi","authors":"U. N. Emiri, E. Enaregha","doi":"10.21472/bjbs(2020)071502","DOIUrl":"https://doi.org/10.21472/bjbs(2020)071502","url":null,"abstract":"Biochemical changes in Mucuna sloanei Fawc. & Rendle (Fabaceae) seeds induced by six pathogenic fungi and comparative analysis of the pathogenic fungi were investigated. The fungal pathogens isolated from partially rotted seeds of M. sloanei seeds include Rhizopus stolonifer, Aspergilus flavus, Aspergillus niger, Penicillium italicum, Alternaria altermata and Fusarium oxysporum. These fungi were used as test fungi to inoculate healthy M. sloanei seeds aseptically. The results of proximate analysis in (%w/w)/100 g of seeds inoculated with the test fungi and uninoculated (control) seeds carried out revealed that there was a significant increase (P < 0.05) in moisture, ash, lipid and carbohydrate content of seeds inoculated with the test fungi, relative to uninoculated (control) seeds. While fiber and protein content decreased in fungi inoculated seeds relative to uninoculated seeds. There was a significant difference (P < 0.05) in mineral content evaluated. Calcium, phosphorus and sodium increased in seeds inoculated with the test fungi relative to the uninoculated, while iron, potassium and magnesium decreased in seeds inoculated with the test fungi. Phytochemical (anti-nutrient) contents (tannin, saponins, total oxalate and cynogenic glucoside) increased in the fungi inoculated seeds, relative to uninoculated seeds. Significant differences also occurred among the test fungi. Fusarium oxysporum, Alternaria altermata and Penicillium italicum appeared to induce more changes in proximate and mineral composition. Penicillium italicum also recorded the highest increase in phytochemical content (tannin, saponin and total oxalate) in seeds inoculated with test fungi relative to the uninoculated (control) seeds.","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":"76567489","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":"Reproductive behavior of women from a rural community in Tefé, Amazonas, Brazil","authors":"Ivone Cabral, Wilsandrei Cella, Silvia Regina Sampaio Freitas","doi":"10.21472/bjbs.061402","DOIUrl":"https://doi.org/10.21472/bjbs.061402","url":null,"abstract":"\u0000 The objective of this descriptive and retrospective study was to delineate the reproductive profile of women living in a rural community of Tefé Municipality, Amazonas State, Brazil. The target audience included women (n = 10), aged 18 years and older, living in the Agrovila community, rural area, distant 13.2 km from the center of Tefé. All participants were interviewed, individually, based on a questionnaire designed exclusively for the present study. The results of the descriptive analyzes indicated that the interviewees reached the menarche between 13 and 17 years old, and the first pregnancy occurred during adolescence, between 14 and 16 years old. Half of the women interviewed reported regular use of contraceptive methods regularly. However, the average number of children per woman was 4.6 children. All women reported prenatal care in all pregnancies. However, 50% reported complications during pregnancy; while 20% had one or two miscarriages due to eclampsia. These data point to the need to improve prenatal consultations, raise awareness about the risks of eclampsia for maternal health, as well as the creation of reproductive health programs that recognize the social and cultural conditions of isolated Amazonian communities.\u0000","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75503184","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":"Digenetic trematodes of the Subfamily Aphanurinae Skrjabin & Guschanskaja, 1954 infecting the commercially important fish Thryssa malabarica (Bloch, 1795) (Clupeiformes, Engraulidae) from the brackishwater bodies of Kerala, India","authors":"P. Nisha, P. Prasadan","doi":"10.21472/bjbs.061410","DOIUrl":"https://doi.org/10.21472/bjbs.061410","url":null,"abstract":"Three species of digenetic trematodes of the Family Hemiuridae Looss, 1899, Subfamily Aphanurinae Skrjabin & Guschanskaja, 1954 with their prevalence, intensity of infection and mean abundance are reported Aphanuroides lethrini, Aphanurus stossichii and Aphanurus tuberculatus. A total of 26 specimens of Thryssa malabarica (Bloch, 1795) were examined for digenean infection. Prevalence of infection of A. lethrini, A. stossichii and A. tuberculatus were 11.53%, 69.23% and 15.38%, respectively, the intensity of infection were 1.6, 3.1 and 2.5 and the mean abundance were 0.19, 2.15 and 0.38, respectively. The prevalence, intensity and mean abundance of infection were at the maximum level in A. stossichii infection. Recovery of these parasites from T. malabarica represents a new host record and the first report from Kerala. The characteristic features of the recovered digeneans are discussed.","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84726351","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}