Brazilian Journal of Biological Sciences最新文献_第9页

Bioaccumulation potential and health risk assessment of heavy metals in Corchorus olitorius L. (Malvaceae) and Amaranthus hybridus L. (Amaranthaceae) obtained from a selected dump site in Akure, Nigeria 尼日利亚阿库雷某垃圾场采收的锦葵科和苋菜科植物重金属生物蓄积潜力及健康风险评价

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061214

F. Ologundudu, Adegbite Tobi, Omotola Fopeyemi

{"title":"Bioaccumulation potential and health risk assessment of heavy metals in Corchorus olitorius L. (Malvaceae) and Amaranthus hybridus L. (Amaranthaceae) obtained from a selected dump site in Akure, Nigeria","authors":"F. Ologundudu, Adegbite Tobi, Omotola Fopeyemi","doi":"10.21472/BJBS.061214","DOIUrl":"https://doi.org/10.21472/BJBS.061214","url":null,"abstract":"\u0000 Heavy metal contamination of polluted site has become a recurring decimal globally posing a threat to human life and biodiversity. This study was carried out to investigate the bioaccumulation potential and health risk assessment associated with the consumption of two indigenous vegetables Corchorus olitorius L. (Malvaceae) and Amaranthus hybridus (Amaranthaceae) in Akure. Initial pre soil analysis showed that the heavy metal concentration were above the safe limit as recommended by World Health Organization (WHO). The heavy metals investigated include Cr, Ni, Cd, Fe and Pb for their bioaccumulation factor to provide baseline data regarding environmental safety and suitability of the vegetables for human consumption. Translocation factor, Daily Intake of Metal (DIM), Health Risk Index (HRI) and Oral Refrence Dose (RFD) were calculated following standard methods. This study concludes that different vegetables accumulate and translocate variable amount of heavy metals from the soil into their tissues. Hence, it is not advisable to consume vegetable samples collected from this site based on the permissible limits as recommended by World Health Organization (WHO).\u0000","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81431586","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}

引用次数: 2

Effect of ecdysteroids on oogenesis in the freshwater crab Travancoriana schirnerae Bott, 1969 (Crustacea: Gecarcinucidae) 体外甾体激素对淡水蟹(tranancoriana schirnerae Bott)产卵的影响(甲壳纲:蟹科)

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061208

S. Raghavan, A. Ayanath

{"title":"Effect of ecdysteroids on oogenesis in the freshwater crab Travancoriana schirnerae Bott, 1969 (Crustacea: Gecarcinucidae)","authors":"S. Raghavan, A. Ayanath","doi":"10.21472/BJBS.061208","DOIUrl":"https://doi.org/10.21472/BJBS.061208","url":null,"abstract":"\u0000 This study evaluated the reproductive performance of female Travancoriana schirnerae Bott, 1969 (Crustacea: Gecarcinucidae) administered with 20-OH ecdysone during different phases of the oogenic cycle. The effect of administration was evaluated by comparing the mean gonadosomatic index, oocyte diameter, oocyte proportion values and histological features of the control and concurrent control ovaries with those of the experimentals. The results clearly indicated that 20-OH ecdysone can stimulate ovarian growth and maturation in all phases of the oogenic cycle, though it caused statistically significant effects only during the early and middle vitellogenic phases, evidenced from the accelerated gonadosomatic index, oocyte diameter and oocyte proportion values, occurrence of vitellogenic oocytes in avitellogenic and previtellogenic ovaries, increased degree of yolk deposition and proliferation of gonia in the experimental ovaries compared to the controls. The outcome of this study is quite promising in the aquaculture practice of this locally abundant edible freshwater crab which forms a cheap protein substitute for the malnourished tribes/poor people of Wayanad.\u0000","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81378511","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}

引用次数: 3

Birds and bats captured in a managed forest in Southwestern Brazilian Amazonia: Results and recommendations from a short-term study 在巴西西南部亚马逊地区的管理森林中捕获的鸟类和蝙蝠:短期研究的结果和建议

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061226

Diego Pedroza, R. S. Verde, E. Guilherme

{"title":"Birds and bats captured in a managed forest in Southwestern Brazilian Amazonia: Results and recommendations from a short-term study","authors":"Diego Pedroza, R. S. Verde, E. Guilherme","doi":"10.21472/BJBS.061226","DOIUrl":"https://doi.org/10.21472/BJBS.061226","url":null,"abstract":"\u0000 Understanding the activity pattern and the height of capture of birds and bats can help to optimize the sampling of both groups. Our aimed was to determine the rates of capture at different times of day/night, and the overlap in the height of capture; classify the trophic guilds, and check variation in the capture rates of the birds and bats. We conducted the study in the Antimary State Forest, in March, 2017. We set mist-nets at the same location during five consecutive days, and were open between 06:00 h and 00:00 h. The birds presented a bimodal activity pattern, as well as bats. Bats were captured at higher levels than birds. Most of the birds captured were insectivores, where as most of the bats were frugivores. Neither group presented a clear pattern of variation in capture rates. Therefore, the first hours of the morning are fundamental for the capture of birds. For bats, we would recommend the captures only after 17:00 h. Mist-nets should be set at ground level for birds, whereas for bats, they should be set above a height of 0.5 m. Thus, the captures should be optimized.\u0000","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77047212","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}

引用次数: 2

Antibacterial effect of some wild medicinal plants in Palestine against multidrug resistant Escherichia coli clinical isolate 巴勒斯坦一些野生药用植物对耐多药大肠杆菌临床分离株的抑菌作用

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061209

L. Abdallah, G. Omar

{"title":"Antibacterial effect of some wild medicinal plants in Palestine against multidrug resistant Escherichia coli clinical isolate","authors":"L. Abdallah, G. Omar","doi":"10.21472/BJBS.061209","DOIUrl":"https://doi.org/10.21472/BJBS.061209","url":null,"abstract":"\u0000 Due to the emergence of antibiotic resistant pathogens, plants are being an excellent alternate to fight the further spread of multidrug resistant microorganisms. In this study, six plant species grown wildly in Palestine were used to determine their efficacy against multidrug resistant clinical isolate of Escherichia coli. The dried areal parts of Calamintha incana, Lupins pilosus, Parietaria judica, Satureja thymbra, Thymbra spicata and Verbascum fruticulosum were extracted with water, ethanol and methanol solvents. All extracts were screened for their antibacterial activity using micro-dilution method. Plant extraction with alcohol solvents provided stronger antibacterial effect compared to the aqueous ones. All alcoholic extracts have an inhibitory effect against E. coli except the ethanol extract of L. pilosus and the methanol extracts of V. fruticulosum and C. incana. Moreover, C. incana aqueous extract was the only aqueous extract with bacteriostatic activity. Among the studied plant species, ethanol extract of T. spicata was the most potent one with MBC value 12.5 mg/mL. However, P. judica ethanol extract which exhibited the best MIC effect (6.25 mg/mL) killed E. coli isolate at a 25 mg/mL. In conclusion, obtained results confirmed the efficacy of using some plant extracts as natural antibacterial alternatives. Therefore, it suggests the possibility of using them as drugs for the treatment of other multidrug resistant bacterial isolates.\u0000","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73694267","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}

引用次数: 5

Efficiency of Acalypha wilkesiana (Muell Arg.) leaf oil extract applied as a biocide against Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) 金针树叶油提取物对斑点小蠹(Callosobruchus maculatus)的杀虫效果研究

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061216

M. Oni

引用次数: 1

Using the step by step models to evaluate field application uniformity of subsurface drip irrigation systems 采用逐级模型评价地下滴灌系统的田间施用均匀性

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061221

Ghazouani Hiba, Basma Latrech, M. Amel, B. Douh, G. Issam, A. Boujelben

{"title":"Using the step by step models to evaluate field application uniformity of subsurface drip irrigation systems","authors":"Ghazouani Hiba, Basma Latrech, M. Amel, B. Douh, G. Issam, A. Boujelben","doi":"10.21472/BJBS.061221","DOIUrl":"https://doi.org/10.21472/BJBS.061221","url":null,"abstract":"\u0000 Compared to other irrigation methods, drip irrigation systems (DI) are considered one of the most efficient form of irrigation. Subsurface drip irrigation allowed reducing water losses by evaporation, runoff, and deep percolation comparing to other irrigation systems supplying water on soil surface. Field evaluation of Uniformity of water applications and its stability, however, are still a matter of controversy and deserve more investigation, since the collection of water discharged needs to excavate the soil around the emitters. Experiments carried out at the Department of Rural and Agrifood Engineering of Polytechnic University of Valencia allowed describing a methodology to assess the performance of drip irrigation through hydraulic characterizations and an emission uniformity coefficient, using the step by step models. Calculations evidenced that operating pressures on emitters ranged between 127.6 kPa and 131.7 kPa, whereas the corresponding flow rates varied from 4.00 L/h and 4.07 L/h, with an average value of 4.02 L/h. Variability in the emitters’ flow rate resulted very limited due to the short length of the lateral (25.6 m). However, more attention should be paid to this for a longer field dimensions. Consequently, the value of emission uniformity coefficient was equal to 96.3%, testifying the uniform water distribution within the sub-plot.\u0000","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81499165","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}

引用次数: 1

Antifungal activity of selected plant extracts against Trichothecium roseum (Pers.) Link (1809) (Sordariomycetes: Hypocreales), causal organism of fungal rot of Solanum melongena L. (Solanales: Solanaceae) in Kashmir, India 部分植物提取物对玫瑰曲霉的抑菌活性研究Link (1809) (Sordariomycetes: Hypocreales)，印度克什米尔茄属(Solanum melongena L.， solanes: Solanaceae)真菌腐烂的致病微生物

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061211

J. Koka, A. Wani, M. Bhat, S. Parveen, M. Fazili, Nusrat Ahmad

{"title":"Antifungal activity of selected plant extracts against Trichothecium roseum (Pers.) Link (1809) (Sordariomycetes: Hypocreales), causal organism of fungal rot of Solanum melongena L. (Solanales: Solanaceae) in Kashmir, India","authors":"J. Koka, A. Wani, M. Bhat, S. Parveen, M. Fazili, Nusrat Ahmad","doi":"10.21472/BJBS.061211","DOIUrl":"https://doi.org/10.21472/BJBS.061211","url":null,"abstract":"\u0000 Egg plant Solanum melongena L. (Solanales: Solanaceae) is an important vegetable grown in Kashmir. It is attacked by number of fungal pathogens in storage and in the field. These fungi caused several fungal rot diseases resulting heavy losses to the growers. Therefore, present study was carried out to study the incidence and management of fungal rot of egg plant using some selected plant extracts. It was revealed from the study that Trichothecium roseum (Pers.) Link (1809) (Sordariomycetes: Hypocreales) causing decaying of egg plant under storage. Study was also undertaken to evaluate the efficacy of some plant extract against Trichothecium roseum on inhibition of spore germination and mycelial growth under in vitro conditions. It was observed from the results that amongst the plant extracts, plant extract of Ajuga bracteosa at highest concentration was found most effective against Trichothecium roseum and cause highest inhibition in the mycelial growth and spore germination followed by plant extract of Taraxicum officinale, Mentha arvensis and Iris kashmiriana at the same concentrations. Other concentrations of plant extracts also bought about significant reduction in mycelial growth and spore germination of the test fungus but to a lesser extent as compared to control.\u0000","PeriodicalId":9319,"journal":{"name":"Brazilian Journal of Biological Sciences","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85314680","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}

引用次数: 0

Use of mollusks in zoohandicraft manufacturing in the Amazon Region 亚马逊地区软体动物在动物工艺品制造中的应用

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061224

M. Barros, R. Chagas

引用次数: 8

GABAergic transmission and modulation of anxiety: A review on molecular aspects gaba能在焦虑中的传递与调节:分子方面的研究进展

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061202

Francisco Isaac Fernandes Gomes, M. B. Aragão, M. Bezerra, H. Chaves

引用次数: 2

Bioengineering of malaria vectors, anopheles mosquitoes (Diptera: Culicidae) as a control strategy: An overview 疟疾病媒、按蚊(双翅目:库蚊科)的生物工程防治策略综述

Brazilian Journal of Biological Sciences Pub Date : 2019-04-30 DOI: 10.21472/BJBS.061204

K. Ileke, Isaac Omotayo Olabimi

引用次数: 0