印度东北部一些特定人群中自然选择的机会。
Opportunity for natural selection among some selected population groups of Northeast India.
作者信息
Das Farida Ahmed, Mithun Sikdar
机构信息
Department of Anthropology, Dibrugarh University, Dibrugarh, Assam - 786 004, India.
出版信息
Indian J Hum Genet. 2010 May;16(2):61-6. doi: 10.4103/0971-6866.69328.
BACKGROUND
Selection potential based on differential fertility and mortality has been computed for seven population groups inhabiting different geographical locations of Northeast India.
MATERIALS AND METHODS
Crow's as well as Johnston and Kensinger's index have been used for the present purpose.
RESULTS AND CONCLUSION
Irrespective of the methodology, the total index of selection was found to be highest among the Deoris followed by the Kaibartas. The lowest selection index was found among the Oraon population. If the relative contribution of fertility and mortality components to the total index is considered to be multiplicative, it is observed that in all these communities the fertility component exceeds that of mortality component, which may indicate initiation of demographic transitional phase in the selected populations with the betterment of healthcare and socioeconomic condition within the last few decades.
背景
已针对居住在印度东北部不同地理位置的七个种群计算了基于差异生育率和死亡率的选择潜力。
材料与方法
本研究采用了克劳氏指数以及约翰斯顿和肯辛格指数。
结果与结论
无论采用何种方法，发现选择总指数在德奥里斯人群中最高，其次是凯巴塔人群。在奥拉昂人群中发现选择指数最低。如果将生育率和死亡率成分对总指数的相对贡献视为相乘关系，可以观察到在所有这些社区中，生育率成分超过了死亡率成分，这可能表明在过去几十年中，随着医疗保健和社会经济状况的改善，所选人群已开始进入人口转变阶段。
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