منابع مشابه
Reproductive seasonality, sex ratio and philopatry in Argentina's common vampire bats
Common vampire bats (Desmodus rotundus) are a key rabies vector in South America. Improved management of this species requires long-term, region-specific information. To investigate patterns of demography and dispersal, we analysed 13 642 captures of common vampire bats in Northern Argentina from the period 1969-2004. In contrast with findings from more tropical regions, we found reproductive s...
متن کاملSeasonality of Clostridium difficile infections in Southern Germany
Between 2000 and 2009, the total number of patients with Clostridium difficile infections increased considerably in Southeastern Germany. A clear seasonality was observed with a higher number of affected patients occurring in the winter months (January-March). Moxifloxacin and erythromycin-resistant C. difficile PCR ribotypes 001 (72%) and 027 (4·6%) were the most commonly isolated strains.
متن کاملSex ratio of transsexuals in Germany: the development over three decades.
OBJECTIVE The higher incidence of man-to-woman transsexuals compared to woman-to-man transsexuals varies markedly from country to country. This is the first survey of the sex ratio to be made in Germany. METHOD It covers 1785 patients who between 1964 and 1998 were diagnosed as transsexual at the four largest German centres offering treatment. RESULTS From 1970 to 1994 the sex ratio remaine...
متن کاملSex Ratio Elasticity Influences the Selection of Sex Ratio Strategy
There are three sex ratio strategies (SRS) in nature-male-biased sex ratio, female-biased sex ratio and, equal sex ratio. It was R. A. Fisher who first explained why most species in nature display a sex ratio of ½. Consequent SRS theories such as Hamilton's local mate competition (LMC) and Clark's local resource competition (LRC) separately explained the observed deviations from the seemingly u...
متن کاملSurvey of Sex Ratio with Intracytoplasmic Sperm Injection
Abstract Introduction: In different studies worldwide, gender ratios derived from ICSI (Assisted reproductive techniques) have been reported differently. Objective: Evaluation of neonatal gender in ICSI women referred to Mehr Infertility Research Center of Rasht. Materials and Methods: In this descriptive-analytical study, the cases of infertile women referred to Mehr Infertility Research Ce...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Human Reproduction
سال: 1998
ISSN: 0268-1161,1460-2350
DOI: 10.1093/humrep/13.5.1401