Evolutionary consequences of age-specific harvesting: age at first reproduction

Socio­-economic Differentials of Female Age at First Marriage: A study of Chuadanga District, Bangladesh

This paper aims to investigate the main socio­economic determinants of female age at first marriage in Chuadanga dis­ trict, Bangladesh, over the year 2005, and attempts to find some explanations for the differences in the age at marriage among socio­ economic characteristics. The findings of the multiple classification analysis (MCA) suggest that among all the variables analyzed in...

Age-specific cost of first reproduction in female southern elephant seals.

When to commence breeding is a crucial life-history decision that may be the most important determinant of an individual's lifetime reproductive output and can have major consequences on population dynamics. The age at which individuals first reproduce is an important factor influencing the intensity of potential costs (e.g. reduced survival) involved in the first breeding event. However, quant...

Contrasted patterns of age-specific reproduction in long-lived seabirds.

While the number of studies providing evidence of actuarial senescence is increasing, and covers a wide range of taxa, the process of reproductive senescence remains poorly understood. In fact, quite high reproductive output until the last years of life has been reported in several vertebrate species, so that whether or not reproductive senescence is widespread remains unknown. We compared age-...

Paternal age and reproduction.

BACKGROUND Due to various sociological factors, couples in developed countries are increasingly delaying childbearing. Besides ethical, economical and sociological issues, this trend presents us with several complex problems in reproduction. Although it is well-known that maternal age has a negative effect on fertility and increases the risk of adverse outcome during pregnancy and in offspring,...

Age-specific Reproduction by Female Laughing Gulls (larus Atricilla)