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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1925 1
1946 7
1947 9
1948 6
1949 7
1950 8
1951 8
1952 13
1953 11
1954 9
1955 4
1956 12
1957 6
1958 10
1959 7
1960 6
1961 15
1962 20
1963 15
1964 15
1965 11
1966 7
1967 41
1968 71
1969 71
1970 101
1971 115
1972 84
1973 96
1974 164
1975 154
1976 175
1977 177
1978 174
1979 153
1980 167
1981 126
1982 128
1983 125
1984 115
1985 115
1986 112
1987 137
1988 98
1989 103
1990 115
1991 124
1992 196
1993 520
1994 871
1995 1202
1996 1278
1997 1513
1998 1633
1999 1924
2000 1996
2001 2237
2002 2295
2003 2637
2004 3072
2005 3257
2006 2874
2007 3134
2008 3300
2009 2963
2010 2930
2011 3280
2012 3645
2013 3651
2014 3371
2015 3322
2016 2882
2017 2584
2018 2142
2019 1061
2020 36
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63,343 results
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Page 1
Daphnia females adjust sex allocation in response to current sex ratio and density.
Booksmythe I, et al. Ecol Lett 2018. PMID 29484799
We manipulated experimental populations, and made repeated observations of natural populations over their growing season, to disentangle effects of population density and the timing of sex from effects of adult sex ratio on sex allocation in cyclically parthenogenetic Daphnia magna. ...Thus, in line with sex ratio theory, we show that D. magna adjust offspring sex allocation in response to the current population sex ratio....
We manipulated experimental populations, and made repeated observations of natural populations over their growing season, to disentangle eff …
The sex chromosome system can influence the evolution of sex-biased dispersal.
Brom T, et al. J Evol Biol 2018. PMID 29927019
We propose a new perspective on this hypothesis by investigating the evolution of sex-biased dispersal when dispersal genes are sex-linked, that is when they are located on the sex chromosomes. We show that individuals of the heterogametic sex disperse relatively more than do individuals of the homogametic sex when dispersal genes are sex-linked rather than autosomal. ...
We propose a new perspective on this hypothesis by investigating the evolution of sex-biased dispersal when dispersal genes are se
Promoting diversity in neuroscience
[No authors listed] Nat Neurosci 2018. PMID 29269762
The Adaptive Sex in Stressful Environments.
Geffroy B and Douhard M. Trends Ecol Evol 2019 - Review. PMID 30952545
This debate has largely ignored some characteristics of the offspring, such as their sex, despite strong evolutionary and demographic implications of sex-ratio variation. ...Whereas exposure to GCs at around the time of sex determination in fish consistently produces males, the extent and direction of sex-ratio bias in response to stress vary in reptiles, birds, and mammals. ...
This debate has largely ignored some characteristics of the offspring, such as their sex, despite strong evolutionary and demographic …
Adult sex ratios and their implications for cooperative breeding in birds.
Komdeur J, et al. Philos Trans R Soc Lond B Biol Sci 2017 - Review. PMID 28760763 Free PMC article.
Importantly, ASR predicts helper sex ratio: in species with more male-biased ASR, helper sex ratio is also more male biased. ...In line with this result, we found that ASR (among both cooperatively and non-cooperatively breeding species) is inversely related to sex bias in dispersal distance, suggesting that the cost of dispersal is more severe for the further-dispersing sex. ...
Importantly, ASR predicts helper sex ratio: in species with more male-biased ASR, helper sex ratio is also more male biased. . …
The selfish germ
Read AF. PLoS Biol 2017. PMID 28700584 Free PMC article.
Curiosity about the sex life of a wasp led to a new way of thinking and a powerful demonstration that evolutionary science could be predictive. ...
Curiosity about the sex life of a wasp led to a new way of thinking and a powerful demonstration that evolutionary science could be p …
A father effect explains sex-ratio bias.
Malo AF, et al. Proc Biol Sci 2017. PMID 28855362 Free PMC article.
Sex ratio allocation has important fitness consequences, and theory predicts that parents should adjust offspring sex ratio in cases where the fitness returns of producing male and female offspring vary. ...We identified a male sperm morphological marker that is associated with the mechanism leading to sex ratio bias; differences among males in the sperm nucleus area (a proxy for the sex chromosome that the sperm contains) explain 22% variation in litter sex ratio. ...
Sex ratio allocation has important fitness consequences, and theory predicts that parents should adjust offspring sex ratio in
The potential pitfalls of studying adult sex ratios at aggregate levels in humans.
Pollet TV, et al. Philos Trans R Soc Lond B Biol Sci 2017 - Review. PMID 28760760 Free PMC article.
Specifically, we discuss distributional issues with aggregated measures of adult sex ratio, significance testing, and statistical non-independence when using aggregate data. Firstly, we show that there are severe distributional issues with national adult sex ratio, such as extreme cases. Secondly, we demonstrate that many 'meaningless' variables are significantly correlated with adult sex ratio (e.g. the max. elevation level correlates with sex ratio at US state level). ...
Specifically, we discuss distributional issues with aggregated measures of adult sex ratio, significance testing, and statisti …
Human sex ratios and sex distribution in sibships of size 2.
Stansfield WD and Carlton MA. Hum Biol 2007. PMID 18027818
National Health Interview Survey (NHIS, 1998 to 2002) on families with two biological children (10 years of age and younger) and found that the distribution of families with two boys, two girls, and one boy + one girl did not statistically conform to a binomial distribution regardless of the boy/girl sex ratio used. Using the best estimate of the sex ratio from the data, we found that there were significantly more families with opposite-sex siblings than families with same-sex siblings. ...
National Health Interview Survey (NHIS, 1998 to 2002) on families with two biological children (10 years of age and younger) and found that …
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