Tierra del Fuego is situated at the southern tip of the American continent, which conditions its environmental and climatic characteristics. The colonizing population arrived, at the end of the 19th century, from other Chilean regions (particularly from Chiloé) and diverse European countries, especially Britain and Croatia, but also Germany, Spain and Italy. In the present study, the existence of a seasonal pattern in 5430 births registered in the Chilean population of Tierra del Fuego from 1890 to 1995 was analysed. The analysis showed no seasonal distribution of births in the periods 1890-1920 and from 1946 to the present day, a phenomenon rarely reported in the literature. The absence of seasonality in birth distribution could be related to the great diversity in the origins of the population's families, the constant renovation of this and the declining importance of the administrative capital of the province of Tierra del Fuego, Porvenir, in favour of Punta Arenas, capital of the Magellanic region. In the period of maximum development of the capital of the province, a seasonal pattern was detected with a peak in April and a trough in October, which corresponds with a maximum of conceptions in July and, in general, during the early southern winter and a decline in births from late spring to mid-summer, with a trough in January. This birth distribution is interpreted as a subordination of activity and social life to the annual sheep cycle. In addition to temporal trends, the influence on the observed patterns of environmental parameters, father's occupation, seasonality of marriage and the origin of the parents were analysed.

译文

Tierra del Fuego位于美洲大陆的南端,具有其环境和气候特征。19世纪底,殖民地人口来自其他智利地区 (尤其是奇洛埃) 和欧洲不同国家,特别是英国和克罗地亚,以及德国,西班牙和意大利。在本研究中,分析了在智利火地岛1890年1995年的智利人口中登记的5430例婴儿的季节性模式。分析显示,在1890-1920和1946年的时期内,出生没有季节性分布,这一现象在文献中很少报道。出生分布缺乏季节性可能与人口家庭起源的巨大多样性,不断的翻新以及Porvenir火地岛 (Tierra del Fuego) 省行政首都的重要性下降有关,而蓬塔阿雷纳斯 (Punta Arenas) 是麦哲伦地区的首都。在省会最大发展时期,发现了一种季节性模式,4月达到高峰,10月达到低谷,这与7月的最大概念相对应,在南方初冬期间,从春末到仲夏的出生人数下降,1月出现低谷。这种出生分布被解释为活动和社会生活对年度绵羊周期的从属关系。除了时间趋势外,还分析了对观察到的环境参数模式,父亲的职业,婚姻的季节性和父母的起源的影响。

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