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目的 掌握塔里木盆地啮齿动物体外寄生虫群落组成、结构和分类。方法 根据地理区划和生境类型选择调查点,按样方法捕获啮齿动物,对体外寄生虫进行单独鉴定,采用群落生态学技术方法,计算各鼠类、蚤类群落的组成和结构参数,并采用聚类分析的方法,对该地区啮齿动物体外寄生虫群落进行分类。结果 在塔里木盆地共捕获啮齿动物7种351只,检获体外寄生蚤10种683只,蜱类3种321只,螨621只,虱29只,构建7个鼠类、蚤类群落;子午沙鼠体外寄生蚤的蚤指数、丰富度和多样性3项指标均较高,对该地区啮齿动物体外寄生虫群落的构成和稳定起到了积极作用,三趾跳鼠体外寄生虫群落与子午沙鼠存在一定的互补性,对维持塔里木盆地蚤类群落结构亦具有重要的作用。结论 经聚类分析可将塔里木盆地7种啮齿动物体外寄生虫群落聚类为4个类型:(1)短耳沙鼠、小林姬鼠、灰仓鼠和小家鼠体外寄生虫群落;(2)三趾跳鼠体外寄生虫群落;(3)大耳跳鼠体外寄生虫群落;(4)子午沙鼠体外寄生虫群落。 相似文献
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目的 澄清三种扇头蜱的存在,列出3种扇头蜱的鉴别要点.方法 从不同自然景观和家、野生动物体上采集蜱类进行分类鉴定.结果 共获得蜱类18 000余只.经鉴定隶属2科5属10种.结论 其中优势蜱种为璃眼蜱属Hyalomma中的种类.其次是扇头蜱属Rhipicephalus、革蜱属Dermacentor、血蜱属Haemaphysalis和钝缘蜱属Ornithodoros的种类. 相似文献
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目的掌握塔里木盆地啮齿动物体外寄生蚤的群落组成和结构。方法根据地理区划和生境类型选择调查点,按样方法捕获啮齿动物,对体外寄生蚤进行单独鉴定,采用群落生态学技术方法,计算各鼠类蚤类群落的组成和结构。结果在塔里木盆地共捕获啮齿动物7种351只,获体外寄生蚤10种683只,构建7个鼠类蚤类群落。结论子午沙鼠体外寄生蚤的蚤指数、丰富度和多样性3项指标均较高,对该地区蚤类群落的构成和稳定起到了积极的作用,长耳跳鼠和三趾跳鼠的蚤类群落结构相似,并与子午沙鼠蚤类群落形成结构上的互补性,对维持塔里木盆地蚤类群落构亦具有重要的作用;群落间的相似性比较分析表明,塔里木盆地的7个鼠类蚤类群落归为跳鼠蚤类群落、家栖或半家栖鼠类蚤类群落和子午沙鼠蚤类群落3个类群。 相似文献
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目的 对塔里木盆地区域的蜱类群落进行分类,了解和掌握不同蜱类群落的结构特征,探讨这些群落在整个区域范围的多样性。 方法 2004年3~5月,按地理区域和生态景观类型选择塔里木盆地区域19个县52个不同生态景观为调查点进行蜱类种类和数量调查,采用群落生态学技术方法,计算群落的丰富度、多样性和均匀性,并结合地质和植被环境指标,采用聚类分析法,对该地区的蜱类群落进行分类。 结果 调查点共采获蜱类5属10种18 181只,以亚东璃眼蜱(Hyalomma asiaticum kozlovi,占35.7%)和亚洲璃眼蜱指名亚种(Hyalomma asiaticum asiaticum,占33.6%)为该地区的优势种类。根据环境的地质类型,植被的种类、丰富度和覆盖度将该地区的生态景观划分为7个群落类型。 结论 塔里木盆地存在着丰富的蜱类群落,且这些群落在该地区整个生态幅度上存在连续的梯度变化。 相似文献
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Liang Shao Mulalibieke Heizhati Xiaoguang Yao Yingchun Wang Suofeiya Abulikemu Delian Zhang Ling Zhou Jing Hong Nanfang Li 《Sleep & breathing》2018,22(2):377-384
Purpose
In this cross-sectional study, we analyzed the potential association between sleep measures and blood pressure variability.Methods
Ninety-three middle-aged hypertensive males, who underwent polysomnography and 24-h ambulatory blood pressure monitoring, were enrolled. Blood pressure variability was assessed by blood pressure standard deviation. Obstructive sleep apnea (apnea hypopnea index ≥?15) was diagnosed in 52 (55.91%) patients. Mean body mass index and age were 27.77 ± 3.11 kg/m2 and 44.05 ± 8.07 years, respectively.Results
Hypertensive males with obstructive sleep apnea showed significantly higher 24-h, diurnal, and nocturnal diastolic blood pressure variability, compared to those without obstructive sleep apnea. While total cohort was further divided into two groups using the median of oxygen desaturation index, another indicator for severity of OSA, significant differences were also observed in 24-h, diurnal, and nocturnal diastolic blood pressure variability between two groups with higher and lower oxygen desaturation index. While subjects were also divided into two groups via the mean of sleep stage 1, hypertensive males with sleep stage 1 ≥?8.1% showed significantly higher diurnal diastolic blood pressure variability than those with sleep stage 1 <?8.1%. Apnea hypopnea index was independently associated with 24-h and nocturnal diastolic blood pressure variability; oxygen desaturation index of 3% with 24-h diastolic, diurnal, and nocturnal diastolic blood pressure; and sleep stage 1 was with 24-h and with diurnal diastolic blood pressure variability in all study subjects.Conclusion
Effects of obstructive sleep apnea on blood pressure variability may not be limited nocturnally.6.
Nanfang Li Li Cai Mulalibieke Heizhati Lin Wang Mei Li Delian Zhang Suofeiya Abulikemu Xiaoguang Yao Jing Hong Bo Zou Jianxin Zhao 《Journal of clinical hypertension (Greenwich, Conn.)》2020,22(10):1884
We aimed to investigate whether month of birth is associated with blood pressure (BP) and prevalent hypertension in adults from a region with frost‐free days of <150 days and average temperatures − 13°C in winter, Xinjiang, China. We analyzed data for 6158 subjects from several surveys. We divided participants into April to August (n = 2624) and September to March (n = 3534) groups, based on length of maternal exposure to cold months, and analyzed BP, prevalent hypertension, and related factors. Diastolic BP in total subjects and systolic and diastolic BP in male subjects born between April and August were significantly higher than in those born between September and March. In sensitivity analysis, untreated males born between April and August showed significantly higher systolic and diastolic BP than did their counterparts. Subjects born between April and August showed significantly higher prevalence of hypertension (31.3% vs 27.8%, P = .003), and isolated systolic (23.3% vs 20.8%, P = .018) and diastolic hypertension (24.5% vs 21.4%, P = .004), than those born between September and March, which is similar for men. Birth between April and August showed 1.68 (95% CI: 1.06‐2.67, P = .027)‐fold increased odds for the prevalence of hypertension, independent of gender, age, body mass index, waist circumference, cigarette consumption, alcohol intake, and family history, compared with their counterparts. In conclusion, maternal exposure to cold spells during pregnancy may be associated with the increased risk of hypertension in offspring later in life, particularly among males, suggesting the involvement of maternal cold exposure during pregnancy in offspring hypertension development. 相似文献
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为掌握塔里木盆地蜱类群落的结构特征,探讨该地区生态环境的差异对蜱类群落结构的影响,按照地理区划和生境类型选择调查点进行蜱类种类和数量调查,采用群落生态学技术方法,分析不同生态环境条件下的蜱类群落的丰富度、多样性和均匀性。共在该地区采获蜱类5属10种,扇头蜱和革蜱在盐碱湿地生态景观中占主要地位,亚洲璃眼蜱是植被发育良好的盐碱沙地或沙漠化生态景观中的优势蜱类。在土壤以盐碱湿地为主的生态环境中,游离蜱群落组成单一,优势种类突出,优势度高,丰富度、多样性和均匀性低;在草本植物和灌木发育良好,地质较为干燥的盐碱和盐碱沙化生态环境中,蜱类群落的丰富度、多样性和均匀性高,优势度适中等;在草本和灌木发育良好的漠化的生态环境中,蜱类的组成较为简单,优势度高,丰富度、多样性和均匀性低,优势种的蜱指数高;在乔木密集,草本植物和灌木稀少的干旱的盐碱和盐碱沙化生态环境中,地面游离蜱的种类和数量均十分稀少。高海拔戈壁湿地生态景观的蜱类群落与其他生态景观的蜱类群落的相似性指数最低,其次为沙漠化生态景观,但该生态景观的2类生境中的蜱类群落具有非常高的相似性;盐碱类生态景观中的各蜱类群落间具有较高相似性,均在0.9以上,且该类生态景观中的蜱类群落与具有较高植被覆盖度的盐碱沙化生态景观和戈壁原生景观的蜱类群落也具有较高的相似性;盐碱沙化生态景观的蜱类群落与其他生态景观中的蜱类群落具有中等水平的相似性指数,在0.5~0.9之间,蜱类群落结构的类型介于盐碱和沙漠化类生态景观的蜱类群落结构形态之间。 相似文献
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Xiaoguang Yao Nanfang Li Yujie Zhang Juhong Zhang Suofeiya Abulikm Delian Zhang Guijuan Chang Keming Zhou Jianqiong Kong 《Medicine》2015,94(10)
Increasing evidence showed a link between arterial elasticity and stiffness and pulse pressure (PP), in which plasma aldosterone may play a role. The observational study aimed to explore the potential relations between plasma aldosterone concentration (PAC) and PP in patients with hypertension.We evaluated the relation between PP and PAC in supine, seated, and upright positions in 195 patients with primary hypertension who underwent postural stimulation test. They were divided into 3 groups by tertiles of PP: PP ≤ 44 mm Hg (n = 70), 44 mm Hg < PP ≤ 51 mm Hg (n = 63), and PP ≥ 51 mm Hg (n = 62). The PAC in different postures was compared, respectively.The results showed the following. First, segregated by tertiles of PP, serum K+, 24-hour systolic blood pressure, 24-hour diastolic blood pressure, sex, upright PAC, and seated PAC showed statistically significant differences in groups. Second, the PAC were significantly different in 3 levels of PP regardless of postures, the individuals with PP ≥ 51 mm Hg had the highest PAC. On contrast, the patients with PAC > 12 ng/dL showed greater PP than those with PAC ≤ 12 ng/dL. Third, weak associations between PP and upright (r = 0.288, P < 0.001), seated (r = 0.265, P < 0.001), and supine postures (r = 0.191, P = 0.008) were detected by simple correlation analysis. After corrected serum K+, age, and sex, the partial correlation coefficients did not change greatly. Fourth, the logistic regression model was constructed with PP ≥ 40 mm Hg or PP < 40 mm Hg as the dependent variable; the serum K+[OR = 0.043, 95% CI: 1.09(1.00–1.12)] and PAC [OR = 0.025, 95%CI: 0.35(0.13–0.88)] were included as significant contributing factors.The results showed that higher PAC was weakly, but significantly, correlated to greater PP regardless of different postures, suggesting that higher PAC may be a risk factor of reduced arterial elasticity in patients with hypertension. 相似文献
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目的掌握塔里木盆地蜱类生态位宽度和生态位重叠,从蜱类生态学角度探讨该地区蜱类在蜱媒自然疫源性疾病上的作用。方法在该地区蜱类群落聚类分类基础上,采用harmon—Wiener的生态位宽度指数公式和Pianka(1973)的生态位重叠公式,计算各蜱类的生态位宽度和生态位重叠指数。结果亚洲璃眼蜱指名亚种和亚东璃眼蜱的生态位宽度最大,分别为0.5257和0.468,其次为图兰扇头蜱和银钝革蜱(0.379和0.299),血红扇头蜱最小(0);图兰扇头蜱、银钝革蜱和血红扇头蜱三者相互之间的生态位重叠值最高均在0.9以上,2种璃眼蜱间的重叠值次之,为0.3479。亚洲璃眼蜱指名亚种与银钝革蜱、亚东璃眼蜱与图兰扇头蜱之间生态位重叠值分别为0.2387和0.1617。亚东璃眼蜱与血红扇头蜱和银钝革蜱,以及亚洲璃眼蜱指名亚种和2种扇头蜱之间的生态位重叠值都在0.1以下。结论亚洲璃眼蜱指名亚种和亚东璃眼蜱在塔里木盆地蜱类群落中占有十分重要的地位,并存在栖息地分布上的分离。 相似文献
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目的 掌握塔里木盆地蜱类群落的组成和分布规律。方法 按照地理区划和生境类型选择调查点进行蜱类种类和数量调查,采用群落生态学技术方法,计算不同生态环境条件下的蜱类群落组成。结果 在塔里木盆地共采获蜱类5属9种,以亚东璃眼蜱(Hyalomma asiaticum kozlovi)和亚洲璃眼蜱指名亚种(Hyalomma asiaticum asiaticum)为优势种类,分别占35.8%和33.6%。但在不同地区和生态环境的蜱类群落组成有所不同。叶尔羌河流域及北部塔里木河中上游地区蜱类种类丰富,共采获5属8种,占捕获总种数的88.9%。游离蜱指数较塔里木东部和南部低,分别为30.47、84.30和85.31,寄生蜱指数高,分别为15.19、10.10和10.85。璃眼蜱属蜱类以亚东璃眼蜱为主,占92.0%,亚洲璃眼蜱占有很少比例,为5.8%,寄生蜱以图兰扇头蜱(Rhipicephalus turanicus)为主,但较塔里木东部和南部低,分别为55.8%、65.8%和74.7%,血红扇头蜱(Rhipicephalus sanguineus)仅占很小的比例,占0.2%;塔里木盆地东部和南部蜱类群落组成基本一致,均为2属5种,较西北部少。游离蜱指数明显较西北部高,寄生蜱指数低。游离蜱中亚洲璃眼蜱指名亚种在南部地区占主要地位,为72.6%,而在东部地区以亚东璃眼蜱为主,为66.9%,存在25%左右的交叉,寄生蜱中以图兰扇头蜱为主,并较西北部的比例偏高,血红扇头蜱的比例达10%左右,与银盾革蜱(Dermacentor niveus)基本一致,较西北部高出20倍左右。结论 塔里木盆地蜱类动物地理区划在宏观上是基本一致的,但在不同地理景观和生态环境中蜱类的群落结构却存在极大的差异。 相似文献
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