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Blood and urinary parasites and associated risk factors in a rural community in Abia State, Nigeria 尼日利亚阿比亚州农村社区血液和泌尿寄生虫及相关危险因素
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.10
C. Okosa, O. M. Ukpai, Q. O. Lawrence, B. C. Chukwuemeka, P. O. Ikpi
The environment, climate, social behaviour, and economic factors make developing countries vulnerable to parasitic infections. A cross-sectional study was conducted (Dec 2017-May 2018) to determine the prevalence of blood and urine parasites in Obizi, Amakama-Olokoro, a rural community in Umuahia South LGA, Abia State. Blood and urine samples were collected from 284 respondents. Sample analyses were done using Rapid Diagnostic Test (RDT) kits and microscopy for blood and centrifugal sedimentation method for urine. Socio-demographic data and risk factors were collected with structured questionnaires. Statistical analysis was done using the Pearson’s Chi-square, with the PAST Statistical package. The results showed an overall blood parasitic prevalence of 32.4%. Plasmodium falciparum recorded the highest prevalence of 28.17% by RDT and 30.6% by microscopy. Trypanosoma brucei gambiense occurred as a mixed infection (1.8%). Schistosoma haematobium had a prevalence of 3.9%. Socio-demographic data showed there were more females (67.3%); more persons in the age group 61-70 years (31.0%) and more farmers (38.0%) in the studied population. More females were infected with Plasmodium falciparum (34.6%) while more males were infected with Schistosoma haematobium (8.6%) P. falciparum occurred in all the age groups. S. haematobium occurred only in three age groups with the highest prevalence found in the age group (11-20) years (26.9%). Malaria infection was higher in those who did not use ITNs (37.1%). Some reasons given for the non-usage of ITNs were high cost/non-availability and discomfort. Farming activities and swimming have been recognized as risk factors to the acquisition of Trypanosoma brucei gambiense and Schistosoma haematobium, respectively. Plasmodium falciparum, Trypanosoma brucei gambiense and Schistosoma haematobium still pose a serious health threat to the community. Eliminating vector breeding sites, the use of ITNs and changes in social behaviours will help reduce blood and urinary parasites and ensure a healthier and economically viable community. 
环境、气候、社会行为和经济因素使发展中国家容易受到寄生虫感染。研究人员于2017年12月至2018年5月进行了一项横断面研究,以确定阿比亚州Umuahia South LGA农村社区Amakama-Olokoro Obizi血液和尿液寄生虫的流行情况。收集了284名受访者的血液和尿液样本。血样分析采用快速诊断试验(RDT)试剂盒和镜检,尿样分析采用离心沉淀法。通过结构化问卷收集社会人口统计数据和危险因素。统计分析使用Pearson卡方和PAST统计软件包完成。结果显示,血寄生虫总流行率为32.4%。恶性疟原虫的流行率最高,RDT为28.17%,镜检为30.6%。布氏冈比亚锥虫为混合性感染(1.8%)。血血吸虫患病率为3.9%。社会人口统计数据显示,女性居多(67.3%);在研究人群中,61-70岁年龄组的人较多(31.0%),农民较多(38.0%)。恶性疟原虫感染以女性(34.6%)和男性(8.6%)居多,各年龄组均有恶性疟原虫感染。血红弧菌仅发生在3个年龄组,11-20岁年龄组患病率最高(26.9%)。未使用蚊帐者的疟疾感染率较高(37.1%)。不使用ITNs的原因是费用高/不可用和不舒服。农业活动和游泳分别被认为是感染布氏冈比亚锥虫和血血吸虫的危险因素。恶性疟原虫、布氏冈比亚锥虫和血血吸虫仍然对社区健康构成严重威胁。消除病媒滋生地、使用ITNs和改变社会行为将有助于减少血液和尿液寄生虫,并确保建立一个更健康和经济上可行的社区。
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引用次数: 0
In Vitro Assessment of anti plasmodial activity of Albizia chevalieri extracts against Plasmodium falciparum 山合欢提取物抗恶性疟原虫活性的体外评价
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.2
H. Labaran, H. U. Aliyu, A. Galadima, A. Sarki, M. Babangida
Medicinal plants play a key role in malaria control in Africa, especially in remote areas where health facilities are limited. This study was carried out with the aim to investigate the anti plasmodial activity of Albizia chevalieri against Plasmodium falciparum. The three aerial parts of Albizia chevalieri were extracted using methanol via maceration process. Anti plasmodial assay was carried out in duplicate in the 96-well microtitre plate. The anti Plasmodial activity of A. chevalieri methanolic extracts observed in this study may be attributed to the presence of some bioactive compounds. The effect of A. chevalieri methanolic extracts and reference drugs showed a decrease in percentage parasitaemia with increasing concentration. With regard to concentrations administered, a dose-dependent antimalarial activity was clearly shown for crude extract, isolates and the reference drugs. Artemether, the root isolate and leaf isolate exhibited a remarkable antiplasmodial activity. Root, leaf extracts and the pure isolates when compared with the standard drug that has the highest percentage inhibition shows no significance difference at (P>0.05). However, when compared with the other drugs such as Chloroquine, Quinine shows a significance percentage inhibition difference at (P>0.05). Considering the inhibitory effect of A. chevalieri methanol extracts on the growth of P. falciparum as reported in this study, it is concluded that the anti plasmodial activity of the plant on P. falciparum suggests its potency in the treatment of malaria infection. Further study on this plant is on-going to isolate, identify and characterize the bioactive compounds from this plant responsible for this bioactivity, and also to carry- out the drug synthesis.
药用植物在非洲的疟疾控制中发挥着关键作用,特别是在卫生设施有限的偏远地区。本研究的目的是研究山合欢对恶性疟原虫的抗疟原虫活性。采用甲醇浸渍法对山合欢的三个地上部分进行了提取。在96孔微量滴定板上进行两次抗疟原虫测定。在这项研究中观察到的山藻甲醇提取物的抗疟原虫活性可能归因于一些生物活性化合物的存在。雪莲甲醇提取物和参考药物的效果显示,随着浓度的增加,副菌血症的百分比降低。就给药浓度而言,粗提取物、分离物和参考药物具有明显的剂量依赖性抗疟活性。Artether、根分离物和叶分离物均表现出显著的抗疟原虫活性。根、叶提取物和纯分离物与抑制率最高的标准药物相比无显著差异(P>0.05)。但与氯喹等其他药物相比,Quinine的抑制率差异显著(P>0.05)。考虑到本研究中所报道的雪莲甲醇提取物对恶性疟原虫生长的抑制作用,得出结论,该植物对恶性疟原虫的抗疟原虫活性表明其在治疗疟疾感染方面的效力。对该植物的进一步研究正在进行中,以从该植物中分离、鉴定和表征负责该生物活性的生物活性化合物,并进行药物合成。
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引用次数: 0
Haemoparasitic infection and haematological parameters of cattle slaughtered at four abattoirs in Kano Metropolis, Nigeria 尼日利亚卡诺大都会四家屠宰场屠宰的牛的血液寄生虫感染和血液学参数
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.9
A. Yusuf, A. Dambo, S. Luka, A.M. Bringa
This study aims to investigate and provide information on the prevalence and haematological parameters of haemoparasites in cattle slaughtered in selected abattoirs in Kano metropolis, Nigeria. A total of 384 blood samples were randomly collected between January and July 2021 and screened for haemoparasites by examining Giemsa-stained thin blood smears. TRBC count, TWBC count, PCV, Hb concentration and DLC were determined using standard methods. An overall parasitaemia of 10.68% was recorded for Anaplasma centrale 14 (3.65%), Anaplasma marginale 11 (2.86%), Theileria mutans and Babesia bigemina with 8 (2.08%) each. Abattoir-specific prevalence indicated 13 (3.39%), 11 (2.86%), 9 (2.34%) and 8 (2.08%) for Unguwa-Uku, Kano central, Bachirawa and Tudun-Wada abattoirs respectively (p>0.05). Young cattle had a significantly (p<0.05) higher prevalence of 11.58% compared to adults with 8.08%. Gender-related parasitaemia revealed that females had higher prevalence of 10.73% than males with 10.60% which was not statistically significant (p>0.05). Breed-specific prevalence showed 9.24%, 11.54% and 16.67% for White Fulani, Red Bororo and Sokoto Gudali respectively, which was statistically significant (p<0.05). Season-related parasitaemia showed that dry season had higher prevalence of 13.54% compared to rainy season with 7.81% which was statistically significant (p<0.05). All haematological parameters were within the recognized reference intervals for cattle. Significant decrease in mean values of PCV, TRBC and slight increase in TWBC was recorded. Routine treatment of animals and regular vector control to reduce the prevalence of haemoparasites in the study area is highly recommended.
本研究旨在调查尼日利亚卡诺市选定屠宰场屠宰的牛中血液寄生虫的流行情况和血液学参数,并提供相关信息。在2021年1月至7月期间,随机收集了384份血液样本,并通过检查吉姆萨染色的薄血涂片筛查血液寄生虫。采用标准方法测定TRBC计数、TWBC计数、PCV、Hb浓度、DLC。中央无形体14(3.65%)、边缘无形体11(2.86%)、变形芽孢杆菌和双巴贝斯虫各8(2.08%),总寄生率为10.68%。Unguwa-Uku、Kano central、Bachirawa和Tudun-Wada屠宰场的特异性患病率分别为13(3.39%)、11(2.86%)、9(2.34%)和8 (2.08%)(p < 0.05)。犊牛极显著(p0.05)。白富拉尼犬、红波罗罗犬和索科托古达利犬的品种特异性患病率分别为9.24%、11.54%和16.67%,差异均有统计学意义(p<0.05)。与季节相关的寄生虫病发病率,旱季为13.54%,高于雨季的7.81%,差异有统计学意义(p<0.05)。所有血液学参数均在牛的公认参考区间内。PCV、TRBC平均值显著降低,TWBC略有升高。强烈建议对动物进行常规治疗并定期控制病媒,以减少研究地区血液寄生虫的流行。
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引用次数: 0
Detection of Tritrichomonas foetus in cattle at the Kumasi abattoir Kumasi屠宰场牛的Tritrichomonas胎儿检测
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.6
F. Sallu, D. Asare, N.T. Aseno, D. Essel-Cobbinah, B. Emikpe
The study was conducted to determine the prevalence of Tritrichomonas foetus in slaughtered cattle at the Kumasi abattoir. A total of one hundred (100) slaughtered cattle were sampled randomly (60-bulls and 40 cows) with preputial wash and vaginal lavage collected after slaughter for laboratory analysis using Wet-mount technique. Data obtained were analyzed by descriptive statistics using MS Excel and the results expressed in percentages and graphs. The prevalence of bovine Tritrichomoniasis was 34% with the cows recording 20% and the bulls 14% of the sampled population. Out of the cows sampled, twenty (20) were positive representing 50% and out of the bulls sampled, fourteen (14) were positive representing 23.3%. This clearly shows that cows had the highest prevalence compared to the bulls, therefore sex has a significant effect on the infection, since p˂0.05. The WASH and the Zebu cattle had relatively higher % positivity of 41.7% and 40.7%. N’dama cattle recorded 28.6% positivity which was same as the 28.6% positivity in the White Fulani, while the Sanga breed recorded the least positivity (21.4%) of the infection. Breed of cattle however had no significant effect on infection (p>0.05). The highest prevalence of Tritrichomonas infection was 47.2% in adult cattle of 4 years old whiles adult cattle of 3 years old had a prevalence rate of 28.6% whereas cattle of 2 years of age recorded the lowest prevalence rate of 22.7%. However, age had no significant effect (p>0.05) on the infection. Further studies should be conducted to ascertain the rate of infection in the country by using a larger sample size. In order to reduce the level of infection it is advisable to screen all breeding bulls and cull the affected ones.
这项研究是为了确定库马西屠宰场屠宰牛中Tritrichomonas胎儿的流行率。随机抽取一百(100)头屠宰牛(60头公牛和40头奶牛),屠宰后收集包皮冲洗液和阴道灌洗液,使用湿式技术进行实验室分析。使用MS Excel对获得的数据进行描述性统计分析,结果用百分比和图表表示。牛Tritrichomoniasis的患病率为34%,其中奶牛占20%,公牛占14%。在采样的奶牛中,二十(20)头呈阳性,占50%,在采样的公牛中,十四(14)头呈阴性,占23.3%。这清楚地表明,与公牛相比,奶牛的患病率最高,因此性别对感染有显著影响,因为p<0.05。WASH和泽布牛的阳性率相对较高,分别为41.7%和40.7%。恩达马牛的阳性阳性率为28.6%,与白富拉尼牛的28.6%相同,而桑加牛的感染阳性率最低(21.4%)。然而,牛的品种对感染没有显著影响(p>0.05)。4岁成年牛的Tritrichomonas感染率最高,为47.2%,3岁成年牛感染率为28.6%,而2岁的牛感染率最低,为22.7%。然而,年龄对感染没有显着影响(p>0.05)。应该进行进一步的研究,通过使用更大的样本量来确定该国的感染率。为了降低感染水平,建议对所有繁殖公牛进行筛查并扑杀受感染的公牛。
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引用次数: 0
Water closets as breeding sites for Aedes mosquitoes in dry seasons 旱季厕所为伊蚊孳生地
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.19
C. Ojianwuna, V. Enwemiwe
The challenges of reducing vectors that transmit diseases such as mosquitoes have been very tasking, especially in dry seasons where there are no visible  breeding habitats. The identification of these breeding habitats and control measures during dry periods are important in the integrated control approach. This study assessed various water closets to ascertain the occurrence and density of mosquitoes and the physicochemical parameters of the water in a University in Southern Nigeria. Water closets in the main campus and its annexes were examined for either the presence or absence of immature stages and adult mosquitoes. Mosquito density in each sampled closet was determined. Water parameters were taken using standard techniques. The association between the density of immature stages and adults with water parameters was equally determined. Mosquitoes were morphologically identified. Hydrogen ion concentration (7.57), electrical conductivity (498.60 μS/cm), and salinity (249.20 ppm) were highest in closets with mosquitoes compared to the closets without mosquitoes. Significant differences were observed between all the sampled water parameters of closets with and without mosquitoes (p< 0.05). Mean larval density (40.77) and occurrence were higher than eggs, pupal and adults. All adult mosquitoes (49) identified was Aedes aegypti. Out of the closets sampled, 48.2% had  mosquitoes. Temperature and Hydrogen ion concentration (pH) positively influenced larval and pupae density while conductivity and salinity showed no correlation to all stages of mosquitoes. This study revealed that closets in this area also serve as reservoir habitats for Aedes aegypti especially when they are not in use during dry seasons and has implications for disease transmission in the region. This requires urgent awareness and prompt public health interventions.
减少蚊子等传播疾病的媒介的挑战是非常艰巨的任务,特别是在没有明显繁殖栖息地的干旱季节。在综合防治方法中,识别这些繁殖栖息地和在干旱期采取防治措施是重要的。本研究评估了尼日利亚南部一所大学的各种厕所,以确定蚊子的发生和密度以及水的理化参数。检查了主校区及其附属设施的厕所是否存在未成熟阶段和成蚊。测定每个取样壁橱的蚊子密度。用水参数采用标准技术。未成熟阶段和成虫密度与水参数之间的关系同样确定。对蚊子进行了形态鉴定。有蚊间氢离子浓度(7.57)、电导率(498.60 μS/cm)和盐度(249.20 ppm)高于无蚊间。有蚊间和无蚊间取样水参数差异有统计学意义(p< 0.05)。平均幼虫密度为40.77,发生率高于卵、蛹和成虫。鉴定成蚊49只,均为埃及伊蚊。在抽样的壁橱中,48.2%有蚊子。温度和氢离子浓度(pH)对幼虫和蛹密度有显著影响,而电导率和盐度对各阶段蚊类均无显著影响。这项研究表明,该地区的壁橱也是埃及伊蚊的水库栖息地,特别是在干旱季节不使用的壁橱,并对该地区的疾病传播产生影响。这需要紧急认识和迅速的公共卫生干预。
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引用次数: 0
Hunting: A risk factor associated with malaria infection in Ogun State, Southwest Nigeria 狩猎:尼日利亚西南部奥贡州与疟疾感染相关的风险因素
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.
F. Akande, O. Ejilude, O. Adelakun, A. Idowu
Malaria is a known major health problem affecting half of the world’s population. The disease prevalence is associated with some occupational risks. The aim of this study was to determine malaria prevalence among hunters in Ogun state, southwest Nigeria. Structured questionnaires were administered on 212 consenting hunters whose blood samples were collected. The blood samples were screened for Plasmodium species by microscopy using both thin and thick blood smears. Blood parameters were monitored in both infected and non-infected hunters; Packed Cell Volume (PCV), haemoglobin concentration, WBC count, and RBC count. Plasmodium falciparum was observed in the blood of 38 hunters (17.9%), of which three had a PCV of ≤ 33%. There was no significant difference in the prevalence of Plasmodium parasite and gender of the hunters but there was a significant difference with PCV, RBC, haemoglobin concentration, age, sleeping in the bush, mosquito bite, level of education and hunting experience of the hunters as regards Plasmodium infection. With the prevalence recorded from this study, there is need for hunters to be educated on the risk of malaria and the need to use insecticide treated nets, repellents and protective clothing during their hunting adventures. 
疟疾是一个已知的主要健康问题,影响着世界上一半的人口。患病率与一些职业风险有关。这项研究的目的是确定尼日利亚西南部奥贡州猎人中的疟疾流行率。对212名自愿采集血样的猎人进行了结构化问卷调查。使用薄血涂片和厚血涂片通过显微镜对血液样本进行疟原虫种类筛选。对感染和未感染猎人的血液参数进行监测;压缩细胞体积(PCV)、血红蛋白浓度、白细胞计数和红细胞计数。在38名猎人(17.9%)的血液中观察到恶性疟原虫,其中3人的PCV≤33%。疟原虫的流行率和猎人的性别没有显著差异,但在疟原虫感染方面,PCV、红细胞、血红蛋白浓度、年龄、丛林睡眠、蚊虫叮咬、教育水平和猎人的狩猎经历有显著差异。根据这项研究记录的流行率,猎人有必要接受关于疟疾风险的教育,以及在狩猎过程中使用驱虫蚊帐、驱虫剂和防护服的必要性。
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引用次数: 0
Prevalence of urinary schistosomiasis among school children In Ago Aduloju Community, Ado LGA of Ekiti State, Nigeria 尼日利亚埃基提州阿多LGA Ago Aduloju社区学童尿血吸虫病患病率
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.18
F. Oluwafemi, T. Oluwadare, B. Fasuba, C. Faeji, O. Kukoyi, I. O. Oni, E. J. Akele, S.O. Uzoayia
Schistosomiasis is a common neglected tropical disease in sub-Saharan Africa, with the greatest number of infected people residing in Nigeria. Several factors have been shown to facilitate the continuous transmission of schistosomiasis in endemic countries, especially water activity in freshwater bodies where the snail vector lives and socio-economic factors. Available control efforts rely on epidemiological information for better targeting of intervention; however, this information is lacking in some research-naive communities in Ekiti State. Therefore, this study is aimed at determining the prevalence of schistosomiasis in the Ago-Aduloju community. The urine sample was collected from 315 consenting community-based school children and screened for schistosomiasis infection using the filtration technique. Data were gathered utilizing questionnaires and laboratory analysis. 315 participants within the age range of 5-19 years comprising 55.2% males, 44.8% females were examined. The prevalence of schistosomiasis was found to be 6.35% with 4.44% in females and 1.91% in males. Among the participant, the questionnaire revealed 84.1% and 95.6% had received praziquantel and albendazole, respectively. 6.41% of the participant who took praziquantel tested positive for schistosomiasis infection. Haematuria was positive in 0.95% of participants. Although 61.3% of participants are aware of schistosomiasis infection, none of them knew the intermediate host involved in the transmission. The findings showed that there is a significant difference (p>0.05) between respondents that have taken praziquantel and those that are positive for schistosomiasis. Conclusively, the study revealed that schistosomiasis is still of concern among the school children in the Ago-Aduloju community and that continuous Mass Drug Administration and health education is imperative to sensitize and educate the school children on transmission, risk, and prevention of schistosomiasis.
血吸虫病是撒哈拉以南非洲一种常见的被忽视的热带疾病,感染人数最多的是尼日利亚。有几个因素已被证明有助于血吸虫病在流行国家的持续传播,特别是蜗牛病媒生活的淡水水体中的水活动和社会经济因素。现有的控制工作依赖于流行病学信息,以便更好地针对干预措施;然而,在埃基提州的一些研究幼稚的社区中缺乏这些信息。因此,本研究旨在确定Ago-Aduloju社区的血吸虫病流行率。从315名同意的社区学童身上采集尿液样本,并使用过滤技术进行血吸虫病感染筛查。通过问卷调查和实验室分析收集数据。315名年龄在5-19岁之间的参与者接受了检查,其中55.2%为男性,44.8%为女性。血吸虫病患病率为6.35%,女性为4.44%,男性为1.91%。调查问卷显示,参与者中分别有84.1%和95.6%接受过吡喹酮和阿苯达唑治疗。6.41%服用吡喹酮的参与者血吸虫病感染检测呈阳性。0.95%的受试者出现血尿。尽管61.3%的参与者知道血吸虫病感染,但他们都不知道参与传播的中间宿主。研究结果表明,服用吡喹酮的受访者与血吸虫病阳性的受访者之间存在显著差异(p>0.05)。总之,该研究表明,血吸虫病仍然是Ago-Aduloju社区学童关注的问题,持续的大规模药物管理和健康教育对于提高学童对血吸虫病传播、风险和预防的认识和教育至关重要。
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引用次数: 2
Necrophagous arthropods associated with Rat (Rattus norvegicus) Carrion in Abraka, Delta State, Nigeria 尼日利亚三角洲州阿布拉卡与大鼠(褐家鼠)尸体相关的吞噬性节肢动物
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.16
E. Umeh, O. Nmorsi
Carrion is an ecosystem in which different fauna arrive and depart at different times. The arrival time and the growth rate of organisms inhabiting carrion are used to determine circumstances surrounding deaths. Studies on Arthropods associated with Rattus norvegicus carrion have great potential in forensic investigations. The present study was undertaken to determine the abundance of some forensically important arthropods on the carrion of rats buried at different depths namely; 0.6m & 1.21m and on the soil surface in six successions in Abraka, Delta State Nigeria. Entomological analysis was carried out on the carrion by standard procedure. Site climatic factors such as temperature and relative humidity were recorded using a digital thermo-hygrometer. A total of 531 Arthropods consisting of Chrysomya species 61(11.4%), Streblognathus aethiopicus 82(15.4%), Musca domestica 55(10.3%) Necrobia rufipes 35(6.5%) Heteronychus arator 38 (7.1%), Onitis sp. 50(9.4%), Saprinus chalcites 83(15.6%), Bryocharis analis 37(6.9%), Piesocorynus lateralis 25(4.7%), Acropteroxys gracilis 12(2.2%), Trochosa sp.5 (0.9%), Nicrophorus sp. 5(0.9%), Solenopsis sp. 26(4.8%), Cartharsius triconutus 1(0.1%), Margaritus feedatus 6(1.1%) Diaperis sp. 4(0.7%), Olibrus liquidus 4(0.7%), Erytus sp. 1(0.1%) and Julus sp. 1(0.1%) were collected from Rattus norvegicus carrion. The difference in the relative abundance of these necrophagous organisms was statistically significant (F=7.168, p<0.05). More arthropods were collected on the soil surface (51.9%) than 0.61m depth (27.4%) and 1.21m depth (20.5%) and these differences were statistically different (F=2.904, p<0.05). The relative humidity showed a positive correlation with relative abundance (r= 0.49). The organisms collected during the wet months were more in abundance than in the dry months and the difference was statistically significant (t= 0.6736, p<0.05). It is hoped that the data in this study will contribute to post-mortem interval monitoring and forensic investigation in our locality.
Carrion是一个生态系统,不同的动物在不同的时间到达和离开。栖息在腐肉中的生物的到达时间和生长速度被用来确定死亡的环境。褐家鼠腐肉与节肢动物的研究在法医学研究中具有巨大的潜力。本研究旨在确定埋在不同深度的大鼠尸体上一些具有法律意义的节肢动物的丰度,即:;0.6米和1.21米,在尼日利亚三角洲州阿布拉卡的六个序列中分布在土壤表面。采用标准程序对腐肉进行昆虫学分析。使用数字温湿度计记录现场气候因素,如温度和相对湿度。共有531种节肢动物,包括Chrysomya 61种(11.4%)、Streblognathus aethiopicus 82种(15.4%)、Musca domestica 55种(10.3%)Necrobia rufipes 35种(6.5%)Heteronychus arator 38种(7.1%)、Onitis sp.50种(9.4%)、Saprinus chalcites 83种(15.6%)、Bryocharis analis 37种(6.9%)、Piesocorinus lateralis 25种(4.7%)、Acroteroxys gracilis 12种(2.2%)、Trochosa sp.5种(0.9%)、Nicroporus sp.5种,从褐家鼠腐肉中采集到Solenopsis sp.26(4.8%)、Cartharsius tricnutus 1(0.1%)、Margaritus feedutus 6(1.1%)、Diaperis sp.4(0.7%)、Olibrus liquidus 4(0.7%),Erytus sp.1(0.1%)和Julus sp.1(0.1%)。这些噬尸生物的相对丰度差异具有统计学意义(F=7.168,p<0.05)。土壤表面采集的节肢动物(51.9%)多于0.61m深度(27.4%)和1.21m深度(20.5%),这些差异具有统计学差异(F=2.904,p<0.05),相对湿度与相对丰度呈正相关(r=0.49)丰水月份采集的生物体数量多于丰水月份,差异具有统计学意义(t=0.6736,p<0.05)。希望本研究的数据能为我地区的尸检间隔监测和法医学调查提供参考。
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引用次数: 0
Occurrence and risk factors associated with Eimeria species infections in Clarias gariepinus and Heteroclarias species 加里皮氏Clarias gariepinus和异Clarias感染艾美耳球虫的发生率和危险因素
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.13
A. D. Adah, S. Lawal, S. Oniye, O.O. Okunbabjo, S. Ola-Fadunsin, A. Adah
Eimeria infection can cause a serious health risk to fish in the wild and especially to the fish production enterprise. Eimeria species are a group of protozoan parasites common in many fish farming systems with little information available on the occurrence, impact, and risks associated with the infection in fish populations. This study was conducted to ascertain the prevalence and risk factors associated with Eimeria species infections in three hundred and seventy-six Clarias gariepinus and Heteroclarias species from some selected fish farms in Kaduna state, Nigeria. Using direct smear techniques, oocysts were recovered from the mucous and intestinal content of the fish. Data on the risk factors were obtained by administering a well-structured questionnaire to the fish farmers. An overall prevalence of 30.3 % was obtained for the apicomplexan parasite of the genus Eimeria. The monthly prevalence of Eimeria species infection among fish was highest in October and the lowest in July. Some risk factors were significantly (p <0.05) associated with fishes in the univariate model. Sex of fish, level of formal education of farmers, feeding of fish with dead poultry and fish, and the number of ponds in a fish farm were the significant risk factors in the multivariate model. This finding indicates that Eimeria species infection is endemic and of great concern among the fish population, thereby posing significant health problems. There is a need for improved fish management practices and biosecurity protocols.
艾美耳球虫感染对野生鱼类特别是鱼类生产企业造成严重的健康危害。艾美耳球虫是许多鱼类养殖系统中常见的一组原生动物寄生虫,关于鱼类种群感染的发生、影响和风险的信息很少。本研究旨在确定尼日利亚卡杜纳州一些选定的养鱼场中376种加里平克拉尾鱼和异克拉尾鱼的艾美耳亚种感染的流行情况和相关危险因素。使用直接涂片技术,从鱼的粘液和肠道内容物中回收卵囊。通过对养鱼户进行结构良好的问卷调查,获得了有关风险因素的数据。艾美耳球虫属顶复体寄生虫总流行率为30.3%。鱼类艾美耳球虫感染月流行率以10月最高,7月最低。在单变量模型中,部分危险因素与鱼类显著相关(p <0.05)。在多元模型中,鱼的性别、养殖者的正规教育水平、用死禽和死鱼喂养鱼以及养鱼场的池塘数量是显著的危险因素。这一发现表明,艾美耳球虫感染是地方性的,在鱼类种群中引起极大关注,从而造成重大的健康问题。有必要改进鱼类管理做法和生物安全协议。
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引用次数: 0
Molecular characterization and species differentiation of Fasciola parasite isolated from cattle slaughtered at Sokoto modern abattoir, Nigeria 尼日利亚Sokoto现代屠宰场屠宰牛中分离的片形虫寄生虫的分子特征和物种分化
Q4 Immunology and Microbiology Pub Date : 2022-05-28 DOI: 10.4314/njpar.v43i1.14
M. Salihu, A. Musawa, B. Garba, Y. Yakubu, M. Bello, A. A. Magaji, A. Junaidu, A. Jibril, F. M. Ballah, C. Achi
Fascioliasis is an important zoonotic disease endemic in many African countries, causing significant financial losses due to reduced productivity and visceral condemnation at slaughter. Fasciola hepatica and F. gigantica are the main causative agents of fascioliasis in domestic animals and humans. Traditional species differentiation based on their morphometric characteristics is subjective and can be challenging. This study was undertaken to identify the Fasciola species associated with cattle infection using a molecular approach. Thirty-eight Fasciola parasite samples collected from cattle slaughtered at the Sokoto modern abattoir were characterised by PCR-RFLP analysis of ITS1 and ITS2 genes using RsaI restriction enzyme, sequencing, and phylogenetic analysis. The results revealed that the isolates belonged to the F. gigantica species based on RFLP patterns. Similarly, phylogenetic results showed clustering with F. gigantica when compared with sequences from neighbouring African countries obtained from the GenBank. This study affirmed that F. gigantica is the predominant Fasciola species affecting cattle in Sokoto state, Nigeria. The results also demonstrate the discriminatory potentials of RFLP and its ability to determine genetic variability among Fasciola Parasites.
筋膜炎是许多非洲国家流行的一种重要的人畜共患疾病,由于生产力下降和屠宰时发自内心的谴责,造成了重大的经济损失。肝片吸虫和巨大吸虫是家畜和人类筋膜炎的主要病原体。基于形态计量特征的传统物种分化是主观的,可能具有挑战性。本研究采用分子方法鉴定与牛感染相关的筋膜属物种。使用RsaI限制性内切酶、测序和系统发育分析,通过ITS1和ITS2基因的PCR-RFLP分析,对从索科托现代屠宰场屠宰的牛身上采集的38份筋膜吸虫寄生虫样本进行了表征。结果表明,根据RFLP图谱,这些分离株属于巨型F.gigantica种。同样,与从GenBank获得的来自非洲邻国的序列相比,系统发育结果显示与巨型F.gigantica聚类。这项研究证实,巨型F.gigantica是影响尼日利亚索科托州牛的主要吸虫物种。结果还证明了RFLP的判别潜力及其确定吸虫寄生虫遗传变异的能力。
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引用次数: 1
期刊
Nigerian Journal of Parasitology
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