social selection, sexual selection and ecological competition
... with plumage signals that enable them to determine fighting ability and establish social dominance without direct physical contests [42–44]. Many other species use vocal [9] or visual [24] signals to defend foraging territories during the non-breeding season. In all cases, the traits mediating compe ...
... with plumage signals that enable them to determine fighting ability and establish social dominance without direct physical contests [42–44]. Many other species use vocal [9] or visual [24] signals to defend foraging territories during the non-breeding season. In all cases, the traits mediating compe ...
Fixing broken masculinity: Viagra asa technology for the production
... Foucault used the term "technologies of sex" to refer to institutions of the nineteenth century that medicalized and controlled deviant sexualities. For example, the medicine of perversions and the programs of eugenics were two great innovations of the technology of sex of the second half of the nin ...
... Foucault used the term "technologies of sex" to refer to institutions of the nineteenth century that medicalized and controlled deviant sexualities. For example, the medicine of perversions and the programs of eugenics were two great innovations of the technology of sex of the second half of the nin ...
REVIEW Social modulation of androgens in male vertebrates: meta
... the highest androgen responsiveness has been observed in males from monogamous species with paternal incubation, and the lowest in males from promiscuous, nonpaternal species. Studies of a number of vertebrate species have discussed the extension of the challenge hypothesis predictions to nonavian v ...
... the highest androgen responsiveness has been observed in males from monogamous species with paternal incubation, and the lowest in males from promiscuous, nonpaternal species. Studies of a number of vertebrate species have discussed the extension of the challenge hypothesis predictions to nonavian v ...
040323A nursing perspective on the misuse of anabolic steroids
... British tennis player Greg Rusedski was cleared by the Association of Tennis Professionals of knowingly taking a banned substance following a positive test for the steroid nandrolone. Anabolic-androgenic steroids are synthetic derivatives related to the male sex hormone, testosterone (androgens). Th ...
... British tennis player Greg Rusedski was cleared by the Association of Tennis Professionals of knowingly taking a banned substance following a positive test for the steroid nandrolone. Anabolic-androgenic steroids are synthetic derivatives related to the male sex hormone, testosterone (androgens). Th ...
Deconstructing Sexual Harassment
... could not understand. MacKinnon chose to ignore the fact that many of the working class women who experienced the harassment—Michelle Vinson not among them—had developed ways of coping with their male co-workers and superiors and were not inclined to view the problem as a problem. “You have to, uh, ...
... could not understand. MacKinnon chose to ignore the fact that many of the working class women who experienced the harassment—Michelle Vinson not among them—had developed ways of coping with their male co-workers and superiors and were not inclined to view the problem as a problem. “You have to, uh, ...
Mediascape
... the state. For instance, his successful disguise as a hospital cleaner in order to obtain antibiotics speaks to assumptions about the identities of the working class, namely, that they would not be medically trained doctors. As someone who also depends on surface invisibility, Juliette speaks to Okw ...
... the state. For instance, his successful disguise as a hospital cleaner in order to obtain antibiotics speaks to assumptions about the identities of the working class, namely, that they would not be medically trained doctors. As someone who also depends on surface invisibility, Juliette speaks to Okw ...
BMC Evolutionary Biology
... functions are in different individuals, or when a single individual possesses both male and female functions. When gender differentiation is absent, mating type systems guarantee that sexual fusions are between different types. However, the absence of both gender and mating type differentiation has ...
... functions are in different individuals, or when a single individual possesses both male and female functions. When gender differentiation is absent, mating type systems guarantee that sexual fusions are between different types. However, the absence of both gender and mating type differentiation has ...
Climate adaptation and speciation: particular focus on reproductive
... reproductive isolation. This is surprising because researchers as early as Darwin (1859) and Wallace (1878) suggested that ecological adaptations in the temperate zone should be largely driven by climate. There is also a general agreement that neutral genetic change through drift is a slow process c ...
... reproductive isolation. This is surprising because researchers as early as Darwin (1859) and Wallace (1878) suggested that ecological adaptations in the temperate zone should be largely driven by climate. There is also a general agreement that neutral genetic change through drift is a slow process c ...
The frequency of sex in fungi
... asexual growth by mitotic cell divisions of the haploid cells and instead of producing fruiting bodies form diploid cells by fusion of two haploids that immediately initiate meiosis. Fusion occurs between cells of equal size and function, and these species are thus isogamous. Consequently, there is ...
... asexual growth by mitotic cell divisions of the haploid cells and instead of producing fruiting bodies form diploid cells by fusion of two haploids that immediately initiate meiosis. Fusion occurs between cells of equal size and function, and these species are thus isogamous. Consequently, there is ...
Differences in Pelvic Fin Length Represent Sexual Dimorphism in
... Utah chub (Gila atraria) is a member of the family Cyprinidae, and is generally considered a sexually monomorphic species [1], other than some temporary dichromatism during the breeding season in which males display a slight gold coloration [2] relative to females. However, in a large sample of Utah ...
... Utah chub (Gila atraria) is a member of the family Cyprinidae, and is generally considered a sexually monomorphic species [1], other than some temporary dichromatism during the breeding season in which males display a slight gold coloration [2] relative to females. However, in a large sample of Utah ...
Evolution`s Rainbow
... the popular notion of the selfish gene, which is imagined to singlehandedly control development for its own ends. Instead, I emphasize that genes must cooperate lest the common body they inhabit sink like a lifeboat filled with squabbling sailors. I dwell at length on genetic, physiological, and anato ...
... the popular notion of the selfish gene, which is imagined to singlehandedly control development for its own ends. Instead, I emphasize that genes must cooperate lest the common body they inhabit sink like a lifeboat filled with squabbling sailors. I dwell at length on genetic, physiological, and anato ...
Let’s Get Serious: Communicating Commitment in Romantic Relationships Please share
... Indeed, the qualities that women tend to be most selective about consist of the qualities that will help to ensure the fitness of women and their children, such as material resources and signals of relationship commitment and provisioning (Li et al., 2002). Building on these ideas, the discrepancy i ...
... Indeed, the qualities that women tend to be most selective about consist of the qualities that will help to ensure the fitness of women and their children, such as material resources and signals of relationship commitment and provisioning (Li et al., 2002). Building on these ideas, the discrepancy i ...
The effects of sexual selection and ecology on adaptation and
... selection, meaning these two evolutionary processes work in opposition. Alternatively, sexual selection may act to increase population mean fitness by reinforcing natural selection, promoting the fixation of advantageous alleles and the purging of deleterious ones. This may occur through a good gene ...
... selection, meaning these two evolutionary processes work in opposition. Alternatively, sexual selection may act to increase population mean fitness by reinforcing natural selection, promoting the fixation of advantageous alleles and the purging of deleterious ones. This may occur through a good gene ...
Critical period conditioning by orgasm during heterosexual oral sex
... & Rutter, 2010). In this way, it is shown that critical periods not only exist in theory, but there is a strong biological basis for critical period learning. Much research has examined the critical period learning in humans. Research has shown that young children’s brains are more malleable in the ...
... & Rutter, 2010). In this way, it is shown that critical periods not only exist in theory, but there is a strong biological basis for critical period learning. Much research has examined the critical period learning in humans. Research has shown that young children’s brains are more malleable in the ...
A Cross-Cultural Analysis of the Behavior of Women and Men
... pressures that shaped psychological sex differences emerged from an asymmetry in the sexes’ parental investment. Women, as the sex that invested more in offspring (e.g., through gestation and nursing), became choosier about potential mates than men, the sex that invested less in offspring. As a resu ...
... pressures that shaped psychological sex differences emerged from an asymmetry in the sexes’ parental investment. Women, as the sex that invested more in offspring (e.g., through gestation and nursing), became choosier about potential mates than men, the sex that invested less in offspring. As a resu ...
Reprint
... the ‘lek paradox’ (Borgia, 1979) have led many to question the validity of such ‘good genes’ arguments (Taylor and Williams, 1982; Kirkpatrick, 1996; Kirkpatrick and Barton, 1997). The lek paradox states that strong directional selection on male display can remove variance in display. Without varian ...
... the ‘lek paradox’ (Borgia, 1979) have led many to question the validity of such ‘good genes’ arguments (Taylor and Williams, 1982; Kirkpatrick, 1996; Kirkpatrick and Barton, 1997). The lek paradox states that strong directional selection on male display can remove variance in display. Without varian ...
Spring 2008 - FORUM: University of Edinburgh Postgraduate Journal
... the marketing of RealDolls and their cousins from other manufacturers tends to be based on the idea that they are ‘the perfect woman,’ perfect because they’re always ready and available, because they provide all the benefits of a human female partner without any of the complications involved with hu ...
... the marketing of RealDolls and their cousins from other manufacturers tends to be based on the idea that they are ‘the perfect woman,’ perfect because they’re always ready and available, because they provide all the benefits of a human female partner without any of the complications involved with hu ...
Sexual selection and extinction in deer
... selected traits vary among individuals, both in response to life history trade-offs and in short timescale as a response to environmental conditions (Griffith et al. 1999). Decrease in sexually selected traits due to predation is one example of response to life history trade-off. Variation in second ...
... selected traits vary among individuals, both in response to life history trade-offs and in short timescale as a response to environmental conditions (Griffith et al. 1999). Decrease in sexually selected traits due to predation is one example of response to life history trade-off. Variation in second ...
The influence of sex and body size on food habits of a giant tropical
... © 1998 British Ecological Society, ...
... © 1998 British Ecological Society, ...
Patterns of sexual dimorphism in Pan and Gorilla limb bones Tessa
... For Figure 2A, which shows the geometric corrected data for Gorilla, as described in methods, Factor 2 is graphed against Factor 3. The overall species graph shows defined sexual dimorphism. Factor 2 consists of high negative loadings for lengths and one positive loading for radius medio-lateral mid ...
... For Figure 2A, which shows the geometric corrected data for Gorilla, as described in methods, Factor 2 is graphed against Factor 3. The overall species graph shows defined sexual dimorphism. Factor 2 consists of high negative loadings for lengths and one positive loading for radius medio-lateral mid ...
between men
... men for sexual release. “Men need to use their dick to feel like men, and if they don’t have a woman, then they screw a guy,” explains Enrique, a prisoner in Costa Rica. Most sexual acts between men are consensual. However, some men are raped or otherwise forced into sex, especially if they are youn ...
... men for sexual release. “Men need to use their dick to feel like men, and if they don’t have a woman, then they screw a guy,” explains Enrique, a prisoner in Costa Rica. Most sexual acts between men are consensual. However, some men are raped or otherwise forced into sex, especially if they are youn ...
flycatchers Ficedula Speciation in
... because closely related species often differ markedly in sexually selected traits, which gives rise to sexual isolation between them. However, theoretical models show that sexual selection is much less powerful when operating alone than when combined with either natural selection on the relevant tra ...
... because closely related species often differ markedly in sexually selected traits, which gives rise to sexual isolation between them. However, theoretical models show that sexual selection is much less powerful when operating alone than when combined with either natural selection on the relevant tra ...
14_chapter 5
... In the turtle Cuora amboinensis, there is size dimorphism between the male and female species. The females are found to be comparatively larger than the males [Plate 5b and 5c]. The mean female SCL was 166mm in comparison to the mean male SCL of 156mm. Lim and Das (1999) had recorded a carapace leng ...
... In the turtle Cuora amboinensis, there is size dimorphism between the male and female species. The females are found to be comparatively larger than the males [Plate 5b and 5c]. The mean female SCL was 166mm in comparison to the mean male SCL of 156mm. Lim and Das (1999) had recorded a carapace leng ...
Conflict on the Sex Chromosomes: Cause, Effect, and Complexity
... the Y and W chromosomes to degenerate at many loci in both gene sequence and expression, as well as allowing them to accumulate repetitive elements (Bachtrog 2013), and this is what causes the cytological and functional differences between X and Y and between Z and W chromosomes. The likelihood that ...
... the Y and W chromosomes to degenerate at many loci in both gene sequence and expression, as well as allowing them to accumulate repetitive elements (Bachtrog 2013), and this is what causes the cytological and functional differences between X and Y and between Z and W chromosomes. The likelihood that ...
Speciation in Ficedula flycatchers - Philosophical Transactions of
... because closely related species often differ markedly in sexually selected traits, which gives rise to sexual isolation between them. However, theoretical models show that sexual selection is much less powerful when operating alone than when combined with either natural selection on the relevant tra ...
... because closely related species often differ markedly in sexually selected traits, which gives rise to sexual isolation between them. However, theoretical models show that sexual selection is much less powerful when operating alone than when combined with either natural selection on the relevant tra ...