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*  CAES NEWSWIRE | Human sex ratios
Most animal sex ratios are 50:50. But that ratio can be changed by environmental factors like temperature or even by seasonal ... "Sex ratios are not necessarily tied to socioeconomic status or natural disasters, as those are always changing. There are all ... What her first-ever global analysis on birth sex ratio shows is that people living in areas with longer, darker winters - such ... Navara is currently studying the cues that affect the sex ratios in poultry. ...
http://www.caes.uga.edu/newswire/story.html?storyid=3439&story=Human-sex-ratios
*  Delhi's child sex ratio at birth increases - Nation
The child sex ratio in the capital registered an increase from 886 females per 1,000 males in 2012 to 895 in 2013, the Delhi ... Delhi's child sex ratio at birth increases The infant mortality rate in Delhi (per thousand live births) saw a marginal dip ... Delhi's child sex ratio at birth increases. 23 Aug 2014, 10:03Jagran Post News Desk Jagran Post Editorial , Last Updated: 23 ... New Delhi: The child sex ratio in the capital registered an increase from 886 females per 1,000 males in 2012 to 895 in 2013, ...
http://post.jagran.com/delhis-child-sex-ratio-at-birth-increases-1408768428
*  Dioecy and the evolution of sex ratios in ants | Proceedings of the Royal Society of London B: Biological Sciences
The equilibrium sex ratio, , and the conditions for the production of split sex ratios are changed, with split sex ratios ... The population equilibrium sex ratio becomes. and the condition for the development of split sex ratios becomes y(z+k),k+y, ... Solving for the equilibrium sex ratio: , which when y=z=1 leads to , in other words a 3 : 1 female-biased sex ratio. Solving ... Although the population sex ratio varied over time, a given colony's sex ratio was stable. Both year (F6,225=5.55, p,0.001) and ...
http://rspb.royalsocietypublishing.org/content/276/1664/2125
*  Reproductive behaviour of female rosy bitterling Rhodeus ocellatus in response to a female-biased operational sex ratio » ...
Three levels of OSR (male/female ratio 1:1, 1:3 and 1:5) were tested. We demonstrated that inspection of the mussel (spawning ... While the effect of Operational Sex Ratio (OSR) on reproductive behaviour of males has been studied extensively, little is ... Kvarnemo C. , Ahnesjö I. ( 2002). "Operational sex ratios and mating competition". - In: Sex ratios: concepts and research ... Vincent A. , Ahnesjo I. , Berglund A. ( 1994). "Operational sex ratios and behavioral sex differences in a pipefish population ...
http://booksandjournals.brillonline.com/content/journals/10.1163/1568539x-00003168
*  Malekilling Bacteria And Ladybug Sex Ratios - Insect Species
The population sex ratio of the majority of sexually reproducing organisms is close to 1 1 selection will normally promote the ... so that the stable strategy is for sex ratio equality. Female-biased sex ratios were first recorded in the ladybug A. ... The population sex ratio of the majority of sexually reproducing organisms is close to 1:1; selection will normally promote the ... Malekilling Bacteria And Ladybug Sex Ratios. Thu, 04 May 2017 , Insect Species ...
https://www.phrygane.tk/insect-species/malekilling-bacteria-and-ladybug-sex-ratios.html
*  Genetics of signal transduction and the effect of maternal smoking on sex ratio of offspring - UnissResearch
We investigated the possible effects of ACP1 on the relationship between maternal smoking and sex ratio of offspring. ACP1 is a ... In newborns from smoking mothers there was a positive correlation between sex ratio and ACP1 activity. The data suggest ... Genetics of signal transduction and the effect of maternal smoking on sex ratio of offspring ... Genetics of signal transduction and the effect of maternal smoking on sex ratio of offspring.. American Journal of Human ...
http://eprints.uniss.it/2823/
*  Vampire bats of Argentina | Open Science
2) Are sex ratios biased? We examined evidence that sex ratios of both juvenile and adults were male-biased, both in maternity ... To evaluate the sex ratio of adults, we only used counts from nocturnal captures, because sex ratios from diurnal captures are ... Male-biased sex ratios. The group sizes and sex ratios of vampire bat maternity and bachelor roosts are consistent with ... Sex ratios. We consistently observed male-biased sex ratios. Males comprised 57.1% of 9509 adults caught at night, 56.9% of ...
http://rsos.royalsocietypublishing.org/content/4/4/160959
*  Sex ratio of Haryana improves - Thaindian News
The sex ratio of both the rural and urban population has recorded an increase. ... The sex ratio in Haryana has improved with 877 females in 2011, from 861 in 2001, for every 1,000 males, said an official ... "The sex ratio of both the rural and urban population has recorded an increase. The sex ratio in rural areas increased to 880 ... Rural child sex ratio declining sharply: Census - Jul 16, 2011. *Declining child sex ratio matter of concern: Tirath - Mar 31, ...
http://www.thaindian.com/newsportal/business/sex-ratio-of-haryana-improves_100556198.html
*  Sex ratio and politics - Newspaper - DAWN.COM
... the sex ratio for the world sans these three countries stands good at 101.4. Had the sex ratio for these three countries been ... The sex ratio inched forward in the first two decades of the country's life to reach 87.5 in the 1972 census - it experienced ... The next census was conducted 17 years later in 1998 and it put the sex ratio at 92.2. The annual average increase came down to ... Starting from a dismal sex ratio of 85.9 females per 100 males in the 1951 census, Pakistan has now improved the figure by 9.3 ...
https://www.dawn.com/news/amp/1381661
*  Bird mating behaviour influenced by sex ratios
... also found that both sexes were more polygamous when the ratio was skewed towards the opposite sex. ... Researchers found that when the sex ratio was skewed, divorce and infidelity was more common. (Credit: O. Kruger). A joint ... "We found that a female bias in sex ratio destabilises the pair bond system, although it is unclear as to whether this is due to ... Bird mating behaviour influenced by sex ratios. Birds in female-dominated populations are more likely to ditch and 'divorce' ...
https://www.bath.ac.uk/announcements/bird-mating-behaviour-influenced-by-sex-ratios/
*  LE SEX-RATIO DE LA GIRAFE : Mammalia
Prices in US$ apply to orders placed in the Americas only. Prices in GBP apply to orders placed in Great Britain only. Prices in € represent the retail prices valid in Germany (unless otherwise indicated). Prices are subject to change without notice. Prices do not include postage and handling if applicable. RRP: Recommended Retail Price ...
https://www.degruyter.com/view/j/mamm.1961.25.issue-4/mamm.1961.25.4.467/mamm.1961.25.4.467.xml?format=INT
*  Sex ratio is not the stock market - Taipei Times
... for the sex ratio and having mood swings whenever there are short-term fluctuations in the ratio is treating the sex ratio as ... Yet it is not unreasonable for the authorities to be concerned about the sex ratio. The problem with the DOH is that it imposes ... As the department sees it, if the sex birth ratio goes any higher than 1.06, it means that female fetuses are being aborted. ... Even more laughably, as soon as the sex ratio fell from 1.09 to 1.079, the department claimed that it had saved 993 girl babies ...
http://www.taipeitimes.com/News/editorials/archives/2013/07/12/2003566899
*  LATE FERTILIZATION AND SEX-RATIO IN TROUT | Science
Thank you for your interest in spreading the word about Science.. NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.. ...
http://science.sciencemag.org/content/58/1502/291
*  Government Takes Tough Stand Against Falling Sex Ratio
Health news on Indian Governements tough stand on infant female foeticide and the falling ratio of male to female child in the ... Fresh Stakes in the Oldest Trade Sexual Intercourse Facts Safe Sex Top Ten Trivial Sex Facts Top Ten Sex Tips for Men Sex ... Government Takes Tough Stand Against Falling Sex Ratio. by Medindia Content Team on November 7, 2005 at 9:15 PM Indian Health ... The falling sex ratio is a genuine cause for concern in India, where even today the birth of a girl child inspires ...
http://www.medindia.net/news/view_news_main.asp?x=5594
*  Parental investment, sexual selection and sex ratios. - PubMed - NCBI
... analogous to Fisherian sex ratio selection, that favours increased parental investment by whichever sex faces more intense ... We emphasize the need to distinguish between the ASR and the operational sex ratio (OSR). If mortality is higher when caring ... The second argument takes the reasonable premise that anisogamy produces a male-biased operational sex ratio (OSR) leading to ... Conventional sex roles imply caring females and competitive males. The evolution of sex role divergence is widely attributed to ...
https://www.ncbi.nlm.nih.gov/pubmed/18462318?dopt=Abstract
*  Sex ratio: the hidden horrors - | Print View
TABLE 1: Child Sex RAtio (CSR) and Overall Sex Ratio (OSR) 1951 1961 1971 1981 1991 2001 ... However, during the same decade, the Overall Sex Ratio (OSR, which looks at the ratio of all females to males, and not just ... Sex ratio: the hidden horrors Millions of males are falling victim to illnesses at much faster rates, skewing the demographic ... During the final decade of the last millennium, the Child Sex Ratio (CSR, the number of girls in the age group of 0 to 6 years ...
http://www.indiatogether.org/articles/csratio-health/print
*  Worldwide Human Sex Ratio at Birth
Sex ratio is the number of males for each female. Current world sex ratio at birth: 1.07:1 male(s)/female (107 baby boys to 100 ... Sex ratio at birth has recently emerged as an indicator of cer ... This map shows worldwide human sex ratio at birth. ... Sex ratio is the number of males for each female.. Current world sex ratio at birth: 1.07:1 male(s)/female (107 baby boys to ... Sex ratio at birth has recently emerged as an indicator of certain kinds of sex discrimination in some countries. For instance ...
http://chartsbin.com/view/2332
*  Sex ratio - Wikipedia
... primary sex ratio - ratio at fertilization secondary sex ratio - ratio at birth tertiary sex ratio - ratio in sexually mature ... Evolution of sex Operational sex ratio Sex allocation Trivers-Willard hypothesis XY sex-determination system Humans: Human sex ... Hamilton W.D. (April 1967). "Extraordinary sex ratios. A sex-ratio theory for sex linkage and inbreeding has new implications ... The sex ratio is the ratio of males to females in a population. In most sexually reproducing species, the ratio tends to be 1:1 ...
https://en.wikipedia.org/wiki/Sex_ratio
*  Suburbanization, estrogen contamination, and sex ratio in wild amphibian populations | PNAS
Sex Ratios.. Offspring sex ratio varied as a function of land use. Overall, the percentage of females was greater (t test: n = ... only the percent of Developed Land Use was a significant predictor of frog sex ratios (Fig. 3); sex ratios became increasingly ... 2000) Maternal control of sex ratio in Rana rugosa: Evidence from DNA sexing. Mol Ecol 9(11):1711-1715. ... Suburban frogs: Sex ratios and estrogens. Max R. Lambert, Geoffrey S. J. Giller, Larry B. Barber, Kevin C. Fitzgerald, David K. ...
https://www.pnas.org/content/112/38/11881
*  Hepatitis B virus and sex ratio of offspring | Science
Thank you for your interest in spreading the word about Science.. NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.. ...
http://science.sciencemag.org/content/201/4357/687
*  Dienekes' Anthropology Blog: Temperature and sex ratio
Ambient temperature predicts sex ratios and male longevity. Ralph Catalano et al.. Abstract. The theory that natural selection ... we find that cold ambient temperatures during gestation predict lower secondary sex ratios and longer life span of males in ... by which women subjected to environmental stressors abort frail male fetuses implies that climate change may affect sex ratio ...
http://dienekes.blogspot.com/2008/02/temperature-and-sex-ratio.html
*  Association of placenta praevia and sex ratio at birth. | The BMJ
Association of placenta praevia and sex ratio at birth. Br Med J (Clin Res Ed) 1987; 294 :544 ... Association of placenta praevia and sex ratio at birth.. Br Med J (Clin Res Ed) 1987; 294 doi: https://doi.org/10.1136/bmj. ...
http://www.bmj.com/content/294/6571/544.1
*  Abnormal sex ratios in human populations: Causes and consequences | PNAS
The Sex Ratio at Birth and the Population Sex Ratio. These two terms need to be clearly differentiated. The "sex ratio at birth ... The population sex ratio depends on three factors: the sex ratio at birth, differential mortality rates between the sexes at ... sex ratio and the sex ratio at birth will gradually decline over the next two to three decades in these high-sex-ratio ... The Impact of Son Preference on Sex Ratio. The impact of son preference on the population sex ratio can be seen in census data ...
http://www.pnas.org/content/103/36/13271
*  INTERSPECIFIC TRANSFER OF THE "SEX-RATIO" CONDITION IN DROSOPHILA | Genetics
INTERSPECIFIC TRANSFER OF THE 'SEX-RATIO' CONDITION IN DROSOPHILA Message Subject (Your Name) has forwarded a page to you from ... INTERSPECIFIC TRANSFER OF THE "SEX-RATIO" CONDITION IN DROSOPHILA. Chana Malogolowkin, G. G. Carvalho and M. C. da Paz ... INTERSPECIFIC TRANSFER OF THE "SEX-RATIO" CONDITION IN DROSOPHILA. Chana Malogolowkin, G. G. Carvalho and M. C. da Paz ... INTERSPECIFIC TRANSFER OF THE "SEX-RATIO" CONDITION IN DROSOPHILA. Chana Malogolowkin, G. G. Carvalho and M. C. da Paz ...
http://www.genetics.org/content/45/11/1553
*  Human sex ratio - Wikipedia
Intersex § Population figures Operational sex ratio Sex selection Sex-selective abortion and infanticide Surplus women XY sex- ... High birth sex ratios, some claim, may be caused in part by social factors. Reported sex ratios at birth, outside the typical ... "Sex ratio at birth (per 100 female newborn, 2005-2010 data)". United Nations Data Division. "Trend Analysis of the Sex Ratio at ... "UN Sex Ratio Statistics". United Nations Population Division. "Sex ratio at birth (per 100 female newborn)". United Nations ...
https://en.wikipedia.org/wiki/Human_sex_ratio