Aerial performance of stalk-eyed ¯ies that differ in eye span
... a given sex, usually males, experience a mating advantage through the mechanisms of female choice or male competition. Almost all recent theoretical models assume that elaborate male secondary sexual characteristics are costly to produce and to maintain (e.g., Grafen 1990a, b; Pomiankowski et al. 19 ...
... a given sex, usually males, experience a mating advantage through the mechanisms of female choice or male competition. Almost all recent theoretical models assume that elaborate male secondary sexual characteristics are costly to produce and to maintain (e.g., Grafen 1990a, b; Pomiankowski et al. 19 ...
CHARACTERISTICS OF THE MALE GAZER
... viewing the male figure may prove to be harmful. Given that females invest more during reproduction (i.e., biological investments like pregnancy), sexual arousal may lead to the pursuit of mating with a specific partner, and it may be in the female’s interest to not pursue as many potential mates so ...
... viewing the male figure may prove to be harmful. Given that females invest more during reproduction (i.e., biological investments like pregnancy), sexual arousal may lead to the pursuit of mating with a specific partner, and it may be in the female’s interest to not pursue as many potential mates so ...
Climate adaptation and speciation: particular focus on reproductive
... areas where the two species co-occur and are found in higher frequency in the hybrid zones. Gene flow from sympatric areas may increase the frequency of brown male pied flycatchers in allopatric populations and further expand the niche use of pied flycatchers into a more mixed forest habitat type. T ...
... areas where the two species co-occur and are found in higher frequency in the hybrid zones. Gene flow from sympatric areas may increase the frequency of brown male pied flycatchers in allopatric populations and further expand the niche use of pied flycatchers into a more mixed forest habitat type. T ...
Chapter Seven: Shame and Intimacy
... humiliated—and very many of these memories are about events which have to do with sex. It begins at a very early age. A baby boy may be made to feel he has done something wrong when he has a sexual erection—and particularly if he seems to be interested in it or proud of it. A baby girl may be made ...
... humiliated—and very many of these memories are about events which have to do with sex. It begins at a very early age. A baby boy may be made to feel he has done something wrong when he has a sexual erection—and particularly if he seems to be interested in it or proud of it. A baby girl may be made ...
Chapter 1 - Hull Hydra
... If this fonnulation of the problem of male powe r itself is quite remarkable for its time, the way in which it is framed in tenus of female values asa salvation remains thoroughlyorthoclox. Despite a degree of increasing self-awareness about this contradiction, Fowles continues to be caught up in it ...
... If this fonnulation of the problem of male powe r itself is quite remarkable for its time, the way in which it is framed in tenus of female values asa salvation remains thoroughlyorthoclox. Despite a degree of increasing self-awareness about this contradiction, Fowles continues to be caught up in it ...
Cognitive Dissonance and Sexual Regret Among College Students
... administrators were forced to set aside such policies in favor of co-ed dormitories (Bogle, 2005). Traditional dating scripts, where a date occurs first and then perhaps a sexual encounter happens later (Bogle), was no longer the dominant script for developing relationships. Students postponed marri ...
... administrators were forced to set aside such policies in favor of co-ed dormitories (Bogle, 2005). Traditional dating scripts, where a date occurs first and then perhaps a sexual encounter happens later (Bogle), was no longer the dominant script for developing relationships. Students postponed marri ...
Intergroup bias toward “Group X”
... commonalities. Singles do not have long-term sexual partnerships, which generates intergroup bias because sex is considered as an essential part of life in contemporary Western societies (DePaulo & Morris, 2005). In fact, committed sexual relationships are widely considered the one “true” peer relat ...
... commonalities. Singles do not have long-term sexual partnerships, which generates intergroup bias because sex is considered as an essential part of life in contemporary Western societies (DePaulo & Morris, 2005). In fact, committed sexual relationships are widely considered the one “true” peer relat ...
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 ...
Prevalence of the Human Immunodeficiency Virus, other
... anal sex was 18 years and majority (83.0%) were single while 10% reported being married/cohabiting with a woman. Of those interviewed, 31.8% assumed a receptive, 60.8% an insertive and 7.4% both an insertive and receptive position during last anal sexual contact. Condoms and lubricant use was fairly ...
... anal sex was 18 years and majority (83.0%) were single while 10% reported being married/cohabiting with a woman. Of those interviewed, 31.8% assumed a receptive, 60.8% an insertive and 7.4% both an insertive and receptive position during last anal sexual contact. Condoms and lubricant use was fairly ...
Altitude affects the reproductive performance in monoicous and
... make bryophytes good models for the study of plant reproductive strategies. Our aim was to test if differences in sexual reproductive performance of bryophytes in tropical rainforests are driven by the breeding system of the species (monoicous or dioicous) or are mainly affected by the habitat. Meth ...
... make bryophytes good models for the study of plant reproductive strategies. Our aim was to test if differences in sexual reproductive performance of bryophytes in tropical rainforests are driven by the breeding system of the species (monoicous or dioicous) or are mainly affected by the habitat. Meth ...
Sex in an Evolutionary Perspective: Just Another Reaction Norm
... discrete classes (even when leaving aside the obvious case of hermaphroditic organisms, for instance most plants). We may recognise the sexes as categories, on the basis of morphology or—when applicable—sex chromosomes, and it is of course often useful to search for and investigate statistical diffe ...
... discrete classes (even when leaving aside the obvious case of hermaphroditic organisms, for instance most plants). We may recognise the sexes as categories, on the basis of morphology or—when applicable—sex chromosomes, and it is of course often useful to search for and investigate statistical diffe ...
Differences in Pelvic Fin Length Represent Sexual Dimorphism in
... study does not test sexual selection as a means whereby this dimorphism arises, it is possible that sexual selection is the cause of the dimorphism and that the presence of a predator acts in opposition to this form of selection. For example, in the Trinidad guppy, Poecilia reticulata, females selec ...
... study does not test sexual selection as a means whereby this dimorphism arises, it is possible that sexual selection is the cause of the dimorphism and that the presence of a predator acts in opposition to this form of selection. For example, in the Trinidad guppy, Poecilia reticulata, females selec ...
Adolescents are HDEV
... experience prejudice and discrimination. Their cultural heroes may be ignored. A relative scarcity of successful role models can be a problem, particularly for youth who live in poverty. Identifying too strongly with the dominant culture may also lead to rejection by the minority group. On the other ...
... experience prejudice and discrimination. Their cultural heroes may be ignored. A relative scarcity of successful role models can be a problem, particularly for youth who live in poverty. Identifying too strongly with the dominant culture may also lead to rejection by the minority group. On the other ...
Treating Erectile Dysfunction - STA HealthCare Communications
... impotence often come from sexually repressed backgrounds, where sex was not discussed or was treated as sinful and immoral. function. The individual causes are many, and each cause may work by more than one mechanism (e.g., diabetes mellitus can cause ED through vascular and neurologic causes). Addi ...
... impotence often come from sexually repressed backgrounds, where sex was not discussed or was treated as sinful and immoral. function. The individual causes are many, and each cause may work by more than one mechanism (e.g., diabetes mellitus can cause ED through vascular and neurologic causes). Addi ...
The evolution of reversed sexual size dimorphism in hawks, falcons
... et al. (2000) for a detailed comparison. Behavioural hypotheses suggest that female size has increased to dominate the male and hence aid maintenance of the pair bond and to increase food provisioning by the male through this female dominance (Amadon, 1975; Mueller, 1986), or because females compete ...
... et al. (2000) for a detailed comparison. Behavioural hypotheses suggest that female size has increased to dominate the male and hence aid maintenance of the pair bond and to increase food provisioning by the male through this female dominance (Amadon, 1975; Mueller, 1986), or because females compete ...
SV Church Resource singles 1 A4 PGS
... It’s one thing to recognize that it’s time to speak out and to act. Do we as the church have the necessary resources to address GBV? I applaud the many South African churches that are starting to speak out, but more needs to be done. Even though churches are eager to do something, they do not feel a ...
... It’s one thing to recognize that it’s time to speak out and to act. Do we as the church have the necessary resources to address GBV? I applaud the many South African churches that are starting to speak out, but more needs to be done. Even though churches are eager to do something, they do not feel a ...
Polyandry and sex-specific gene expression
... as testis size under polyandry comes at a cost to immune function [53 –55]. We might also expect elevated levels of purifying selection on both the gene sequence and gene expression patterns related to sperm production [56,57]. In mating systems with no or very little sperm competition, males need o ...
... as testis size under polyandry comes at a cost to immune function [53 –55]. We might also expect elevated levels of purifying selection on both the gene sequence and gene expression patterns related to sperm production [56,57]. In mating systems with no or very little sperm competition, males need o ...
Rape Myth Acceptance - University of Minnesota Duluth
... as token, whereas men learn to act out their sexual interest and they are told that in certain circumstances, it is not necessary to control their sexual urge, such as dating situations or marriage. Women in these situations are viewed as sexual objects whose function is to satisfy men’s needs so th ...
... as token, whereas men learn to act out their sexual interest and they are told that in certain circumstances, it is not necessary to control their sexual urge, such as dating situations or marriage. Women in these situations are viewed as sexual objects whose function is to satisfy men’s needs so th ...
Plantas com efeito na impotência
... Resumo: The aim of this study was to examine the effect of Ginkgo biloba on antidepressant-induced sexual dysfunction. The Ginkgo biloba (n=19) and the placebo groups (n=18) were divided; each to be administered with Ginkgo biloba and placebo respectively for 2 months by means of a randomized placeb ...
... Resumo: The aim of this study was to examine the effect of Ginkgo biloba on antidepressant-induced sexual dysfunction. The Ginkgo biloba (n=19) and the placebo groups (n=18) were divided; each to be administered with Ginkgo biloba and placebo respectively for 2 months by means of a randomized placeb ...
Genetic Correlations with Floral Display Lead to Sexual Dimorphism
... the sexes are thought to arise at least initially from sexual selection, which acts through differences in reproductive success caused by competition for mates (Darwin 1871). Sexual selection is usually considered distinct from viability selection because it operates specifically through variation i ...
... the sexes are thought to arise at least initially from sexual selection, which acts through differences in reproductive success caused by competition for mates (Darwin 1871). Sexual selection is usually considered distinct from viability selection because it operates specifically through variation i ...
Evolutionary Psychology
... tion is that women will prefer men as potential mates who express a willingness to invest in them and their offspring (Buss, 1995). This is derived from the hypothesis that in paternally investing species, females will use cues to a man’s willingness to invest as a criterion for mate selection. In t ...
... tion is that women will prefer men as potential mates who express a willingness to invest in them and their offspring (Buss, 1995). This is derived from the hypothesis that in paternally investing species, females will use cues to a man’s willingness to invest as a criterion for mate selection. In t ...
Engaging in the Hookup Culture: A Self
... Consistent with most previous studies, it is expected that males will engage in more hookups and have a greater number of partners compared to their female peers. Furthermore, Whites are expected to engage in more hookups compared to their peers of other ethnicities. This study will be the first to ...
... Consistent with most previous studies, it is expected that males will engage in more hookups and have a greater number of partners compared to their female peers. Furthermore, Whites are expected to engage in more hookups compared to their peers of other ethnicities. This study will be the first to ...
Persistence of the sexes in metapopulations under intense
... and males greater production of asexual propagules. Some patches and even entire populations lose males or, more rarely, females. 5. In the model, males were often eliminated by competition from individual patches, but both sexes almost always persisted in the metapopulation (as in nature), with fem ...
... and males greater production of asexual propagules. Some patches and even entire populations lose males or, more rarely, females. 5. In the model, males were often eliminated by competition from individual patches, but both sexes almost always persisted in the metapopulation (as in nature), with fem ...
Hooking Up and Risk Behaviors Among First
... study hooked up during the semester, and these hookups largely included penetrative sex behaviors (73%, oral sex and=or intercourse). Central to the current study, they found that men were more likely to hook up if they had done so in the four months prior to the study. We attempted to extend these ...
... study hooked up during the semester, and these hookups largely included penetrative sex behaviors (73%, oral sex and=or intercourse). Central to the current study, they found that men were more likely to hook up if they had done so in the four months prior to the study. We attempted to extend these ...
Friend or Foe Who Can You Trust? - Kirklees Safeguarding Children
... Sexual exploitation has been identified as an issue throughout the UK, in both rural and urban areas. Not only does it rob children of their childhood, it can have a serious long term impact on every aspect of their lives. It damages the lives of whole families and carers and can lead to family brea ...
... Sexual exploitation has been identified as an issue throughout the UK, in both rural and urban areas. Not only does it rob children of their childhood, it can have a serious long term impact on every aspect of their lives. It damages the lives of whole families and carers and can lead to family brea ...
Human male sexuality
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Human male sexuality covers physiological, psychological, social, cultural, and political aspects of the human male sexual response and related phenomenon. It encompasses a broad range of issues, including male sexual desires and behaviors which as a part of human sexuality, have also been addressed by principles of ethics, morality, and religion.