Revista de Ciencias Agrícolas最新文献_第8页

Apprehension of illegal pesticides, agricultural productivity and food poisoning on the Brazilian state of Mato Grosso do Sul 巴西南马托格罗索州逮捕非法农药、农业生产力和食物中毒

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.106

Graziela Sant’ana, Sabrina H. C. Araujo, J. L. Pereira, E. E. Oliveira

{"title":"Apprehension of illegal pesticides, agricultural productivity and food poisoning on the Brazilian state of Mato Grosso do Sul","authors":"Graziela Sant’ana, Sabrina H. C. Araujo, J. L. Pereira, E. E. Oliveira","doi":"10.22267/rcia.1936e.106","DOIUrl":"https://doi.org/10.22267/rcia.1936e.106","url":null,"abstract":"The application of agrochemicals plays a key role in the world's food and agricultural products supply. Brazil, as one of the most relevant agricultural global players is highly dependent on the application of such products, which surely attracted not only companies that licitly commercialized the pesticides but also the so termed pesticide smugglers. Here, we conducted a retrospective survey (i.e., from 2010 to 2017) regarding the apprehension of illegal products, agricultural productivity and food poisoning in the state of Mato Grosso do Sul (MS). The statistical data were obtained by official agencies Such as Technical-Scientific Sector of the Federal Police Department of the MS State, The System of Control of Seized Goods, The National Toxic-Pharmacological Information System and The Brazilian Institute of Geography and Statistics, and by the non-official National Union of the Product Industry for Plant Protection agency. The results indicated that in 2011 the MS state had the largest number of seizures of illegal pesticides compared to other years. In addition, from 2010 to 2013, the state was among the regions with the highest number of seizures. In the same period, the agricultural productivity of the cotton, sugarcane, corn and soybean crops was lower compared to the other years. Regarding the food poisoning, the percentage of human intoxication by agrochemicals for agricultural use was low compared to all cases of intoxication by various toxic agents. It was concluded that the state MS presented a large amount of seizure of illegal pesticides.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124184770","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: 4

Effects of Lippia sidoides Cham. (Verbenaceae) essential oils on the honey bees, Apis mellifera (Apidae: Hymenoptera), foraging 利皮甙对中药的影响。(马鞭草科)精油对蜜蜂，蜜蜂蜜蜂(蜜蜂科:膜翅目)，觅食

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.104

Izabella Moreira da Cruz Pinheiro, João Henrique S. Luz, Luis Flávio N. Souza, A. Oliveira, E. E. Oliveira, R. S. Aguiar, G. R. Santos, T. P. Ferreira, M. C. A. Silveira-Tschoeke, Paulo Henrique Tschoeke

{"title":"Effects of Lippia sidoides Cham. (Verbenaceae) essential oils on the honey bees, Apis mellifera (Apidae: Hymenoptera), foraging","authors":"Izabella Moreira da Cruz Pinheiro, João Henrique S. Luz, Luis Flávio N. Souza, A. Oliveira, E. E. Oliveira, R. S. Aguiar, G. R. Santos, T. P. Ferreira, M. C. A. Silveira-Tschoeke, Paulo Henrique Tschoeke","doi":"10.22267/rcia.1936e.104","DOIUrl":"https://doi.org/10.22267/rcia.1936e.104","url":null,"abstract":"The use of plant essential oils has been adopted as less hazardous to the environment and human health than synthetic insecticides used for the control of insects that transmit diseases. Despite of exerting insecticidal activities against several insect disease vectors, the potential impacts on non-target organisms exerted by essential oils extracted from Lippia sidoides (Cham.) have not received adequate attention. Here, we evaluated the susceptibility and potential changes in consumption rates of honey bees, Apis mellifera (L.), when exposed to essential oils extracted from L. sidoides. Was exposed forager bees to honey syrup (50% v/v) containing L. sidoides essential oil for 5 h. After this exposure period, the bees received regular honey syrup for another 19 h period. Six essential oil concentrations was used, namely 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5 µL of essential oil/mL of syrup, and evaluated the syrup consumption and bees mortality in both periods (at the 5th and 24th h). The results reveal that independent of the essential oil concentration, the forager bees fed significantly less on L. sidoides essential oil-containing honey syrup. However, feeding on L. sidoides essential oil-containing honey syrup did not cause significant mortality when compared with bees that were not exposed to the essential oils. Thus, the results demonstrate that L. sidoides essential oils exhibited adequate selectivity against honey bees.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125719719","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

Chronic effects of fire suppressors on the reproduction of the copepod Nitocra sp. 灭火剂对桡足动物尼克拉繁殖的慢性影响。

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.109

Maysa Ueda-De-Carvalho, Lucas Buruaem-Moreira, Luciane Maranho-Alves, Denis Moledo-de-Souza-Abessa

{"title":"Chronic effects of fire suppressors on the reproduction of the copepod Nitocra sp.","authors":"Maysa Ueda-De-Carvalho, Lucas Buruaem-Moreira, Luciane Maranho-Alves, Denis Moledo-de-Souza-Abessa","doi":"10.22267/rcia.1936e.109","DOIUrl":"https://doi.org/10.22267/rcia.1936e.109","url":null,"abstract":"Fire suppressors are widely used in firefighting and their chemical composition may present a mixture of perfluorochlorinated surfactants (PFCs), including the perfluorooctane sulfonate (PFOS) which has been internationally banned due to its classification as a persistent organic pollutant (POP). PFCs have been found in environmental matrices and soft tissues of organisms, but the potential effect of such compounds on marine organisms has been overlooked. Here, it was evaluated whether the chronic exposures (i.e., seven days) to the fire suppressors Ageofoam, Cold Fire, Kidde and Argus could affect the reproduction of the copepod Nitocra sp. The tested concentrations consisted of those recommended on the products’ manuals and those ranging between 0.0001% and 1%. For each compound, the effective concentrations to 50% exposed organisms (EC50) and the lowest observed effect concentrations (LOEC) were estimated. All the fire suppressors exhibited high toxicity, causing fecundity reduction. At the recommended dilutions, 100% lethality occurred for all compounds. The EC50 values ranged from 0.00817% - Ageofoam - to 0.03081% - Argus. The LOECs ranged from 0.001% - Ageofoam - to 0.1% - Argus and Kidde; and were much lower than the concentrations recommended for commercial use. The fire suppressors showed high toxicity to the copepod, reducing the reproduction rates, even in very low concentrations, suggesting that the release of such substances in the estuary caused severe effects to the environment. This assessment provides subsides to the environmental regulation of fire suppressors in Brazil, because these compounds do not have national regulations for their use and disposal.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129990351","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: 7

Initial growth of coffee (Coffea arabica L. var) castillo in the coffee zone of Nariño Nariño咖啡区卡斯蒂略咖啡(Coffea arabica L. var)的初期生长

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.112

Hernando Criollo E., Johanna Muñoz B., Jorge Checa B., Wilmer Noguera R.

{"title":"Initial growth of coffee (Coffea arabica L. var) castillo in the coffee zone of Nariño","authors":"Hernando Criollo E., Johanna Muñoz B., Jorge Checa B., Wilmer Noguera R.","doi":"10.22267/rcia.1936e.112","DOIUrl":"https://doi.org/10.22267/rcia.1936e.112","url":null,"abstract":"The importance of coffee cultivation in Nariño is reflected in the fact that 64% of its municipalities grow coffee. The ruggedness of its Andean topography provides great diversity in terms of climatic conditions, which, in one way or another, affect the behavior of coffee in all its physiological processes. Therefore, this study sought to identify the variation in the growth processes and production processes in the different coffee areas of this department, including the coffee-growing municipalities Sandoná, Consacá, La Florida and La Unión in the Department of Nariño, using experimental lots located at different altitude ranges (B <1600msnm; M between 1600 and 1800msnm and A >1800msnm). The statistical design used for each municipality was Random Complete Blocks with three treatments and sixteen repetitions. The recorded climatic variables included photosynthetically active radiation, ambient temperature, precipitation and relative humidity, and the evaluated physiological variables were plant height, number of leaves, basal stem diameter, number of primary branches, number of secondary branches, length of primary branches, number of knots per branch and leaf area index. The variable plant height was statistically higher in the upper zone (A) in the municipalities La Florida (79.95 cm) and Consacá (64.31cm); in La Florida, the number of branches and the LAI were higher in the upper zone plants, while the diameter of the stems was higher in the middle zone. In the other municipalities, these variables were not affected by the altitude.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133164644","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

Growth performance of Astyanax altiparanae fed with plant and/or animal lipid sources 添加植物和/或动物脂源饲料的天牛生长性能研究

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.107

William T. Chaves, E. C. Almeida, Cristiana Carneiro, Larisa Magnone, Nilton Martins, M. Bessonart, J. Zuanon, A. L. Salaro

{"title":"Growth performance of Astyanax altiparanae fed with plant and/or animal lipid sources","authors":"William T. Chaves, E. C. Almeida, Cristiana Carneiro, Larisa Magnone, Nilton Martins, M. Bessonart, J. Zuanon, A. L. Salaro","doi":"10.22267/rcia.1936e.107","DOIUrl":"https://doi.org/10.22267/rcia.1936e.107","url":null,"abstract":"The lambari, Astyanax altiparanae, exhibits a great potential for aquaculture due to its omnivory, rapid growth and ease captive production. Despite of fish lipid metabolism being directly related to the dietary lipid consumed, which may lead to changes in fish growth, nothing much have been established regarding the lipid sources that can be applied in A. altiparanae captive production. Thus, this present research was conducted aiming to evaluate the growth performance and whole body composition of A. altiparanae fed with lipid sources of plant and/or animal origins. Were used a Completely Randomized design experiment with five treatments. The treatments consisted of isoproteic and isoenergetic diets, containing the following lipid sources: T1: linseed, chia and sunflower oils; T2: linseed and corn oils; T3: linseed, chia, corn and sunflower oils; T4: sunflower, corn and fish oils; T5: linseed, chia, sunflower, corn oils and bovine fat. Each treatment was replicated six times, where the experimental units consists of 10 fishes (averaged weight: 4.0 + 0.5 g) placed in an aquarium containing 80L of dechlorinated water. Were compared the growth performance parameters among the treatments by applying an one-way analysis of variance (ANOVA) at 5% significance (P < 0.05). The results revealed that both growth performance and whole body composition of A. altiparanae were not affected by the lipid source, which indicate that these fishes can efficiently use both vegetable lipid sources as well as mixtures of vegetable and animal lipid sources without any growth disadvantages.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133765489","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

Potential of diatomaceous earth as a management tool against Acanthoscelides obtectus infestations 硅藻土作为一种防治棘藻侵害的管理工具的潜力

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.105

L. V. Viteri Jumbo, M. Pimentel, E. E. Oliveira, P. Toledo, Lêda Rita D'Antonino Faroni

{"title":"Potential of diatomaceous earth as a management tool against Acanthoscelides obtectus infestations","authors":"L. V. Viteri Jumbo, M. Pimentel, E. E. Oliveira, P. Toledo, Lêda Rita D'Antonino Faroni","doi":"10.22267/rcia.1936e.105","DOIUrl":"https://doi.org/10.22267/rcia.1936e.105","url":null,"abstract":"The weevil Acanthoscelides obtectus (Say) (Coleoptera: Chrysomelidae: Bruchinae) is a cosmopolitan pest that causes high losses in stored beans in small storage units and especially on-farm storages. Here, it was tested the efficacy of the inert dust diatomaceous earth (DE) as an alternative to control A. obtectus in common beans (i.e., Phaseolus vulgaris L.) on different storage temperatures and exposure intervals. Using a Completely Randomized design four doses (0.25, 0.50, 0.75 and 1.00g kg-1) of diatomaceous earth on beans kept at different temperatures (25, 28, 30, 32 and 35°C). Insect mortality was evaluated after two or five days of exposure. The impacts of diatomaceous earth in the offspring of five days-exposed A. obtectus adults were evaluated. The offspring production (emerged adults) was evaluated 60 days after the exposure. The results revealed that A. obtectus mortality caused by diatomaceous earth was dose, temperature and exposure period dependent. For instance, at the lowest temperature (25°C), diatomaceous earth dose (0.25g kg-1 of beans) and exposure period of two days, the efficacy of diatomaceous earth was significantly reduced when compared to the other treatments. When applied at temperatures above 30°C, the diatomaceous earth treatments always resulted in A. obtectus mortality of at least 90%. Curiously, offspring production (F1) was reduced to over 95% in all diatomaceous earth, temperatures and exposure period treatments. Therefore, the results demonstrated that diatomaceous earth has the potential to be used as a tool to manage A. obtectus infestations in stored beans, considering that such control practice adequately reduced these insect infestations in several possible scenarios.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114572402","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

Effects of imidacloprid-sodium chloride association on survival and reproduction of the stink bug Podisus nigrispinus 吡虫啉-氯化钠联用对黑足虱存活和繁殖的影响

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.108

G. S. Ramos, P. Paulo, P. Toledo, K. Haddi, J. C. Zanuncio, E. E. Oliveira

{"title":"Effects of imidacloprid-sodium chloride association on survival and reproduction of the stink bug Podisus nigrispinus","authors":"G. S. Ramos, P. Paulo, P. Toledo, K. Haddi, J. C. Zanuncio, E. E. Oliveira","doi":"10.22267/rcia.1936e.108","DOIUrl":"https://doi.org/10.22267/rcia.1936e.108","url":null,"abstract":"Pesticide effects on natural enemies in an agroecosystem are of paramount importance for integrated pest management programs. Natural enemies can be subject to direct and indirect exposure to insecticides and synergistic molecules (e.g., sodium chloride - NaCl) which are used to control various pests of agricultural crops such as soybean. Here, we evaluated the potential effects of imidacloprid and its interaction with NaCl as an enhancer on the survival and reproductive abilities of the non-target predator Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae). The insects were exposed to the stink bugs control field recommended dose of imidacloprid associated or not with the salt at the concentration of 0.5% (w/v). NaCl as a pesticide enhancer did not affect the survival of P. nigrispinus adults after 48 h of exposure (less than 12% of mortality was always recorded). However, the fifth instar nymph mortality was almost 50%. The effects of imidacloprid on the reproductive parameters of P. nigrispinus included a decrease in the oviposition, showing fewer eggs per day. However, the fertility was not affected. The NaCl addition, therefore, had no effect on the mortality, survival, and reproduction of the non-target predator. The use of NaCl associated to imidacloprid and other pesticides in the presence of P. nigrispinus demonstrated compatibility, however, it requires further evaluation to endorse the set of these pest control strategies.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125228291","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: 6

Carbon storage potential of windbreaks in the United States 美国防风林的碳储存潜力

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.111

William Ballesteros Possú, J. Brandle, Héctor Ramiro Ordóñez

{"title":"Carbon storage potential of windbreaks in the United States","authors":"William Ballesteros Possú, J. Brandle, Héctor Ramiro Ordóñez","doi":"10.22267/rcia.1936e.111","DOIUrl":"https://doi.org/10.22267/rcia.1936e.111","url":null,"abstract":"In the United States of America, agriculture is performed on large farms of monocultures, affecting ecosystems and making a great contribution to climate change. The carbon storage potential for twelve field windbreak designs containing one-, two- and three-rows and nine farmstead windbreaks encompassing three- to ten-rows of mixed tree species were analyzed in nine regions: Northern Lake States (NLS), Corn Belt (CB), Southern Plains (SP), Delta States (DS), Appalachia (AP), Rocky Mountains North (RMN), Rocky Mountains South (RMS), North East (NE), y Northern Plains (NP), using the US Forest Inventory and Analysis database and allometric equations. Carbon storage potentials for different field windbreak designs across regions ranged from 0.3 Mg C km-1 yr-1 for a single-row small-conifer windbreak in the Northeast region to 5.8 Mg C km-1 yr-1 for a three-row tall-deciduous windbreak in the Appalachia region. Carbon storage potentials for farmstead windbreaks ranged from 0.8 Mg C 300 m-1 yr-1 for a three-row of mixed tree species windbreak in the Rocky Mountain North to 12.7 Mg C 300-1 yr-1 for a ten-row of mixed tree species windbreak in Delta States region.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129514402","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

Black twig borer, Xylosandrus compactus (Eichhoff), as a potential threat to the coffee production 黑枝螟Xylosandrus compactus (Eichhoff)对咖啡生产的潜在威胁

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.102

Amanda C. Túler, Wilson R. Valbon, H. S. Rodrigues, L. R. Noia, L. Santos, Isac Fogaça, V. M. Rondelli, A. C. V. Filho

{"title":"Black twig borer, Xylosandrus compactus (Eichhoff), as a potential threat to the coffee production","authors":"Amanda C. Túler, Wilson R. Valbon, H. S. Rodrigues, L. R. Noia, L. Santos, Isac Fogaça, V. M. Rondelli, A. C. V. Filho","doi":"10.22267/rcia.1936e.102","DOIUrl":"https://doi.org/10.22267/rcia.1936e.102","url":null,"abstract":"In robusta coffee, Coffea canephora, the black twig borer Xylosandrus compactus (Eichhoff) (Coleoptera: Curculionidae) causes considerable damage. Although this has been reported in many crops for years in Brazil, recently, the injury caused by X. compactus in coffee has been ignored. This present study aimed to report the current status of X. compactus in Brazil, and to investigate its attack frequency in different robusta coffee genotypes. In this study, we reported the occurrence of X. compactus in robusta coffee plants in the state of Rondônia for the first time. We also evaluated the occurrence of this pest in different robusta coffee genotypes in the state of Espírito Santo. In all plants, the plagiotropic branches were attacked; however, the genotypes G2, G6, G8, G20, G48, G50, G51 and G52 showed a high number of attacked plagiotropic branches, whereas the genotypes G24 and G41 showed a low attack frequency. Thus, these can be promising candidates for pest resistance studies. Moreover, it was reported that Almeidea rubra, Alseis floribunda, Plinia grandifolia and Casearia Sylvestris can serve as hosts of X. compactus. Thus, our findings suggest that X. compactus is a threat to coffee production, and that future studies are necessary to find appropriate tools for its management.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116541943","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: 4

Hystometric evaluation of nickel chronic exposure effects on large instestine of adult Wistar male rats 镍慢性暴露对成年Wistar雄性大鼠大肠镜的影响

Revista de Ciencias Agrícolas Pub Date : 2019-10-16 DOI: 10.22267/rcia.1936e.103

Maria Luiza Assis Rodrigues, Sirlene Souza Rodrigues Sartori, Priscila Izabel Santos Totaro, Sérgio Luis Pinto da Matta

{"title":"Hystometric evaluation of nickel chronic exposure effects on large instestine of adult Wistar male rats","authors":"Maria Luiza Assis Rodrigues, Sirlene Souza Rodrigues Sartori, Priscila Izabel Santos Totaro, Sérgio Luis Pinto da Matta","doi":"10.22267/rcia.1936e.103","DOIUrl":"https://doi.org/10.22267/rcia.1936e.103","url":null,"abstract":"The ingestion of considerable amounts of water or food contaminated with nickel can be very toxic. The present work was conducted aiming to evaluate the effects of nickel exposures on ascending colon of adult Wistar male rats at hystometric level. We used 12 animals that were divided in a control (ingested uncontaminated water) and a nickel-contaminated (i.e., 25 mg de nickel/L of water) groups. Nickel chloride was offered in declorinated water and the experiment had a 56 days exposure period. A portion of the ascending colon was removed of the animals and subjected to hystological labelling processes using blue toluidin (for general hystometric description), Alcian Blue (AB, for acid mucins) and periodic acid-Schiff (PAS) technique (for neutral mucins). The potential differences between groups were desgined by applying the Whitney test and t test (p < 0.05). The crypts were smaller for the nickel-contaminated group, even though these organism exhibited broader and higher crypts. Nickel-contaminated animals exhibited a smaller amount of calyceform cells with AB and PAS positive reactions as well as a less mucus quantities when compared with nickel-uncontaminated animals. Such reductions on the amount of calyceform cells with AB and PAS positive reactions may be related wiht the shallower crypts, which possibly reduced the synthesis and secretion of mucins, compromissing the functional aspects (e.g., lubrification and intestinal mucosa protection) of the nickel-contaminated large intestines. Interestingly, the wider and higher crypts and higher epithelium collumn on the nickel-contaminated animals may represent a relevant trade-off for the intestinal mucosa protection.","PeriodicalId":211714,"journal":{"name":"Revista de Ciencias Agrícolas","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130637887","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