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成年太行山猕猴头骨变量相关性及比较研究 总被引:2,自引:0,他引:2
对 12例成年太行山猕猴头骨变量进行测量和统计学分析的结果表明 :在耳点间宽 (X6 )、上面宽(X10 )、左眶宽 (X15)、两眶宽 (X16 )、上颌齿槽弓长 (X2 1)等变量间存在显著的性别差异。相关性分析结果显示 ,下颌角度 (X34 )、枕骨大孔长 (X36 )、枕骨大孔宽 (X37)分别与其它变量间相关不显著 ;颅骨最大长(X1)、眉间点 -人字点长 (X2 )、中眶间宽 (X13)分别与其它变量间相关性少数达到显著或极显著 ;其余头骨变量间相关性绝大多数都达到显著或极显著水平。与湘鄂、闽粤猕猴颅骨有关变量相比 ,有显著的不同。三个猕猴种群的聚类分析结果显示 ,湘鄂、闽粤猕猴种群间的生物学距离相对较近 ,而太行山猕猴与二种群间的距离均较远。 相似文献
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成年太行山猕猴肱骨与锁骨的初步研究 总被引:7,自引:1,他引:6
本项研究对成年太行山猕猴的肱骨(33例)及锁骨(29例)进行了全面测量及观察,计算了5项指数。对太行山猕猴、滇南猕猴、川西猕猴、湘鄂猕猴的肱骨、锁骨和桡骨有关测量指标及指数进行聚类分析,分析结果表明:与其他3个猕猴亚种相比,太行山猕猴肱骨与锁骨的形态结构更适应于地面上的活动,说明其在地上活动较多,在树上活动较少。 相似文献
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成年太行山猕猴肩关节变量的研究 总被引:4,自引:0,他引:4
本项研究对成年太行山猕猴桃肩并节变量进行了测量和统计,作了异速生长分析,并对太行山猕猴、滇南猕猴、川西猕猴、湘鄂猕猴肩并关节变量进行了比较和聚类分析,与上述3个亚种相比,太行山猕猴较短的肩胛骨,较小的锁肱指数,较大的三角肌止点指数和较小的摆荡指数,表明太行山猕猴肩关节形态结构更适应于地面上的活动,说明其在地面上活动较多,在树上活动较少。 相似文献
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成年太行山猕猴(Macaca mulatta tcheliensis)肩关节变量的研究 总被引:6,自引:0,他引:6
本项研究对成年太行山猕猴肩关节变量进行了测量和统计,作了异速生长分析,并对太行山猕猴(M.mulatta tcheliensis)、滇南猕猴(M.mulatta mulatta)、川西猕猴(M.mulatta lasiotis)、湘鄂猕猴(M.mulatta littoralis)肩关节变量进行了比较和聚类分析。与上述3个亚种相比,太行山猕猴较短的肩胛骨、较小的锁肱指数、较大的三角肌止点指数和较小的摆荡指数,表明太行山猕猴肩关节形态结构更适应于地面上的活动,说明其在地面上活动较多,在树上活动较少。 相似文献
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太行山猕猴髋骨变量研究初报 总被引:10,自引:1,他引:9
本文对22例(♂11,♀11)成年太行山地区猕猴髋骨有关变量进行测量,通过有关变量单因素方差分析、R型聚类和回归分析,结果表明:太行山猕猴的髋骨变量有较明显的自身特征,髋骨有关变量在雌雄之间有明显差异。 相似文献
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中国水域江豚颅骨的地理变异 总被引:5,自引:3,他引:2
本文根据144号江豚骨骼标本(其中长江种群标本40号,黄海种群标本59号,南海种群标本45号),选用42项颅骨测量变量,研究了颅骨在各地理种群之间的差异。t-检验和协方差分析表明:长江江豚成体的颅基长比较小。南海种群吻长小于其它两个种群,而吻宽则最大,长江种群次之,黄海种群最小。黄海种群的前颌骨宽、颧宽、眶前突最大宽和眶后突最大宽比其它两个种群的小。黄海种群的上颌齿较多,而南海种群则下颌齿较多,长 相似文献
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太行山猕猴下颌骨变量相关性研究 总被引:10,自引:2,他引:8
本研究测量了18例(雄4,雌14)成年太行山猕猴下颌骨的12项变量。通过对下颌骨变量的性别判别分析和相关分析。结果显示:太行山猕猴下颌骨变量有其自身特征,与其它猕猴下颌骨资料比较表现出一定差异;用Ottestat方法对有关变量建立性别判别函数式,其判别率达86.86%,下颌骨变量相关性研究表明,各变量之间有正相关,也有负相关,大多数变量之间相互程度较差,不同变量之间其相关程度存在一定差异。 相似文献
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H.-R. GREGORIUS 《Biological journal of the Linnean Society. Linnean Society of London》1984,23(2-3):157-165
For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment. 相似文献
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment. 相似文献
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In this article, we systematically review Dr. Wu Lien-Teh's academic achievements and outstanding contributions in the prevention and control of the plague epidemic in northeast China and introduce the development of the earliest public health epidemic prevention system in China in order to commemorate the 140th anniversary of Dr. Wu Lien-Teh's birth. We hope that this article will provide insights into the effective prevention and control of emerging infectious diseases as well as the current worldwide pandemic of COVID-19, facilitating the improvement and development of public health systems in China and around the globe. 相似文献
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