Decreased lifetime fecundity in women with PCOS: findings from a high fecundity population
نویسندگان
چکیده
منابع مشابه
Estimating the heritability of female lifetime fecundity in a locally adapted Drosophila melanogaster population.
The heritability of genome-wide fitness that is expected in finite populations is poorly understood, both theoretically and empirically, despite its relevance to many fundamental concepts in evolutionary biology. In this study, we used two independent methods of estimating the heritability of lifetime female fecundity (the predominant female fitness component in this population) in a large, out...
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Organisms live in heterogeneous environments, so strategies that maximze fitness in such environments will evolve. Variation in traits is important because it is the raw material on which natural selection acts during evolution. Phenotypic variation is usually thought to be due to genetic variation and/or environmentally induced effects. Therefore, genetically identical individuals in a constan...
متن کاملLognormal distribution of individual lifetime fecundity: insights from a 23-year study.
Individual variance in lifetime fecundity within populations is a life-history parameter of crucial evolutionary and ecological significance. However, knowledge of its magnitude and underlying mechanisms in natural populations is biased toward short-lived taxa. This paper summarizes results of a 23-year study on a population of the Mediterranean shrub Lavandula latifolia. We document the within...
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Farrowing rate and number of pigs born alive were compared after use of either frozen semen or combined fresh and frozen semen matings in nulliparous gilts. Estrus was synchronized using Altrenogest (AT: Regu-Mate® Solution, Hoescht Roussel Vet, Warren, New Jersey) and detected with a mature boar. The farrowing rate was 74% for females inseminated with frozen semen, and 88% for females insemina...
متن کامل[Fecundity reduction and aging in fertile women population in the period 1990-2004 in Chile].
BACKGROUND Chile is in the advanced stage of demographic transition with a low natural growth and a progressively aging population. AIM To analyze births by range of maternal age and to establish if population aging is expressed in the women's fertile age range. MATERIAL AND METHODS Trend analysis of births and age-specific birth rates in the period 1990-2004, in the Chilean women populatio...
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ژورنال
عنوان ژورنال: Fertility and Sterility
سال: 2019
ISSN: 0015-0282
DOI: 10.1016/j.fertnstert.2019.07.1111