Reprint
... of female resistance to one manipulative male trait favours evolution of a new male trait to which females do not yet have a defence. It is also assumed that there are many pathways along which males can manipulate females. In short, the theory predicts that sexually antagonistic coevolution will ca ...
... of female resistance to one manipulative male trait favours evolution of a new male trait to which females do not yet have a defence. It is also assumed that there are many pathways along which males can manipulate females. In short, the theory predicts that sexually antagonistic coevolution will ca ...
anita_repro_assignment_1
... DEFINITION Coitus is the sexual union between the male and female genitals. It is usually accompanied by rhythmic movements and orgasms. During coitus, the male genitalia (penis) enters the vagina of the female and begins the process of rhythmic movements, in order to stimulate the female and to cau ...
... DEFINITION Coitus is the sexual union between the male and female genitals. It is usually accompanied by rhythmic movements and orgasms. During coitus, the male genitalia (penis) enters the vagina of the female and begins the process of rhythmic movements, in order to stimulate the female and to cau ...
Why Creativity is Sexy: for Creative Abilities in Humans
... the most time, effort, and resources to creative activities had the highest reproductive success. There is some evidence of differences in reproductive success not only between people in creative professions and those outside them, but also among the individuals in creative occupations. Clegg, Nettl ...
... the most time, effort, and resources to creative activities had the highest reproductive success. There is some evidence of differences in reproductive success not only between people in creative professions and those outside them, but also among the individuals in creative occupations. Clegg, Nettl ...
Sexual selection of male parental care in giant water bugs
... Females that prefer caring males may also derive indirect genetic benefits, if the caring males have good genes to overcome the cost of parental care [8]. In such species, males may in turn advertise their parental intent to females [10]. The sexual selection hypothesis of evolution of paternal care ...
... Females that prefer caring males may also derive indirect genetic benefits, if the caring males have good genes to overcome the cost of parental care [8]. In such species, males may in turn advertise their parental intent to females [10]. The sexual selection hypothesis of evolution of paternal care ...
Title: Too Many Men: The Violence Problem? Authors: Ryan Schacht
... order for the ideas suggested above to be testable (e.g., avoid combining multiple measures). We need to know, ...
... order for the ideas suggested above to be testable (e.g., avoid combining multiple measures). We need to know, ...
Sexual Selection: Harem Size and the Variance in Male
... morphologies involved in mating success was 0.16, indicating that the opportunity for selection is often much greater than the strength of directional selection on a particular trait. Our estimates of Imates and the opportunity for sexual selection measure the variance in relative male reproductive ...
... morphologies involved in mating success was 0.16, indicating that the opportunity for selection is often much greater than the strength of directional selection on a particular trait. Our estimates of Imates and the opportunity for sexual selection measure the variance in relative male reproductive ...
Microsatellite analysis of maternity and the mating system in the Gulf
... theory (Vincent et al. 1992). This reversal is thought to result from a female biased operational sex ratio (OSR), such that more females than males are available to mate at any given time (Emlen & Oring 1977). The net effect is that males become a limiting resource in reproduction and females are e ...
... theory (Vincent et al. 1992). This reversal is thought to result from a female biased operational sex ratio (OSR), such that more females than males are available to mate at any given time (Emlen & Oring 1977). The net effect is that males become a limiting resource in reproduction and females are e ...
Microsatellite analysis of maternity and the mating system Syngnathus scovelli
... theory (Vincent et al. 1992). This reversal is thought to result from a female biased operational sex ratio (OSR), such that more females than males are available to mate at any given time (Emlen & Oring 1977). The net effect is that males become a limiting resource in reproduction and females are e ...
... theory (Vincent et al. 1992). This reversal is thought to result from a female biased operational sex ratio (OSR), such that more females than males are available to mate at any given time (Emlen & Oring 1977). The net effect is that males become a limiting resource in reproduction and females are e ...
Sexual Selection and Mate Choice
... sticklebacks (Gasterosteus aculeatus), males are more brightly colored than females, suggesting that sexual selection is stronger in males, despite the fact that males alone care for the brood. Therefore, and because parental investment is notoriously difficult to quantify (Clutton-Brock, 1991), Clu ...
... sticklebacks (Gasterosteus aculeatus), males are more brightly colored than females, suggesting that sexual selection is stronger in males, despite the fact that males alone care for the brood. Therefore, and because parental investment is notoriously difficult to quantify (Clutton-Brock, 1991), Clu ...
Sexual Intercourse and Relationship Development
... intercourse with a partner on the development of the relationship: feelings of pressure/obligation to engage in intercourse, relationship quality as a sexual decision factor, and sexual satisfaction. Feelings of pressure and obligation to engage in sexual activity come from many directions. For exam ...
... intercourse with a partner on the development of the relationship: feelings of pressure/obligation to engage in intercourse, relationship quality as a sexual decision factor, and sexual satisfaction. Feelings of pressure and obligation to engage in sexual activity come from many directions. For exam ...
Sexually selected females in the monogamous Western Australian
... sexual selection in a field population of seahorses. Our results show that females, but not males, are under sexual selection in our focal population of the Western Australian seahorse. We do not know the mechanism of the observed sexual selection on females, i.e. whether it is generated by intrasex ...
... sexual selection in a field population of seahorses. Our results show that females, but not males, are under sexual selection in our focal population of the Western Australian seahorse. We do not know the mechanism of the observed sexual selection on females, i.e. whether it is generated by intrasex ...
Chapter 3
... research for evolutionary psychology. Unlike social scientists who usually claim that mating choices are a function of socio-economic pressures and culturallyshaped gender roles (Wood & Eagly 2002), evolutionary psychologists defend the view that mating preferences are innate psychological adaptatio ...
... research for evolutionary psychology. Unlike social scientists who usually claim that mating choices are a function of socio-economic pressures and culturallyshaped gender roles (Wood & Eagly 2002), evolutionary psychologists defend the view that mating preferences are innate psychological adaptatio ...
Problems in sexual selection theory and neo
... biologists.18 He also claimed that in no case has it been demonstrated scientifically that sexual selection in wild populations has significantly changed an animal’s physical traits. This conclusion is not unexpected, because it would be necessary to show not only that the females selected males wi ...
... biologists.18 He also claimed that in no case has it been demonstrated scientifically that sexual selection in wild populations has significantly changed an animal’s physical traits. This conclusion is not unexpected, because it would be necessary to show not only that the females selected males wi ...
Mutual Mate Choice Models as the Red Pill in
... we have called “theories” (e.g., “dual process theory,” “terror management theory,” “cognitive dissonance theory”) were mostly simplistic dichotomies, warmed-over philosophy, or pretentious terms that relabeled some empirical observation without really explaining it. When EP started using MCFC sexua ...
... we have called “theories” (e.g., “dual process theory,” “terror management theory,” “cognitive dissonance theory”) were mostly simplistic dichotomies, warmed-over philosophy, or pretentious terms that relabeled some empirical observation without really explaining it. When EP started using MCFC sexua ...
- NRC Research Press
... different selective forces operating in males and females, i.e., that body shape is ideally adapted for different ecological, social, or reproductive roles. One widespread complication is that all the abovementioned sexual differences were reported when a single trait, snout–vent length (SVL), was t ...
... different selective forces operating in males and females, i.e., that body shape is ideally adapted for different ecological, social, or reproductive roles. One widespread complication is that all the abovementioned sexual differences were reported when a single trait, snout–vent length (SVL), was t ...
Sex roles and sexual selection
... copulating with several partners than there is for females, leading to stronger competition between males over mates and stronger selection on males than on females. However, Bateman also showed that sexual selection in females may be strong because multiple mating by females also influenced their r ...
... copulating with several partners than there is for females, leading to stronger competition between males over mates and stronger selection on males than on females. However, Bateman also showed that sexual selection in females may be strong because multiple mating by females also influenced their r ...
pride and prejudice or children and cheating? jane austen`s
... while the costs are that he might gain a reputation as a ‘womanizer’ or face injury or death at the hands of a jealous rival. For the reasons outlined above, men are more likely than women to pursue short-term strategies, as the costs associated with short-term strategies are higher for women and th ...
... while the costs are that he might gain a reputation as a ‘womanizer’ or face injury or death at the hands of a jealous rival. For the reasons outlined above, men are more likely than women to pursue short-term strategies, as the costs associated with short-term strategies are higher for women and th ...
Sexual Selection
... - not really a level, but recognized in the same way - as a deviation from predictions offered by a strict selection model. 1. The Basics - many species show sexual dimorphism (morph or behav) - WHY? If adaptive (must be tested), then selective pressures differ - Some traits appear COSTLY to surviva ...
... - not really a level, but recognized in the same way - as a deviation from predictions offered by a strict selection model. 1. The Basics - many species show sexual dimorphism (morph or behav) - WHY? If adaptive (must be tested), then selective pressures differ - Some traits appear COSTLY to surviva ...
Mate choice: From sexual cues to cognitive adaptations
... females) come ready-made, predictions from sexual selection theory are often fairly simple, and results attract widespread media interest. But there’s much more to mate choice than sex differences. Modern sexual selection theory provides a framework for analyzing one of the most important decision d ...
... females) come ready-made, predictions from sexual selection theory are often fairly simple, and results attract widespread media interest. But there’s much more to mate choice than sex differences. Modern sexual selection theory provides a framework for analyzing one of the most important decision d ...
Founder effects and the evolution of asymmetrical
... evolution of reduced female choosiness at low population densities. A key prediction of this hypothesis is the evolution of asymmetrical sexual isolation wherein females from the ‘ancestral’ source population discriminate against males from the ‘derived’ population (due to missing courtship element ...
... evolution of reduced female choosiness at low population densities. A key prediction of this hypothesis is the evolution of asymmetrical sexual isolation wherein females from the ‘ancestral’ source population discriminate against males from the ‘derived’ population (due to missing courtship element ...
Is Music More Than Auditory Cheesecake?
... In most cultures, music serves to assist in the process of increasing communication and enabling people to function together more effectively. It provides a means of expressing a wide variety of human feelings, love, sadness and a sense of belonging which people sometimes find difficult to verbalize ...
... In most cultures, music serves to assist in the process of increasing communication and enabling people to function together more effectively. It provides a means of expressing a wide variety of human feelings, love, sadness and a sense of belonging which people sometimes find difficult to verbalize ...
Sexual conflict
... suggests that there is substantial antagonistic adult fitness variation, with genes that benefit males being simultaneously detrimental to females and vice versa. However, it is possible that much of the adult fitness variation attributable to unconditionally deleterious mutations have been removed ...
... suggests that there is substantial antagonistic adult fitness variation, with genes that benefit males being simultaneously detrimental to females and vice versa. However, it is possible that much of the adult fitness variation attributable to unconditionally deleterious mutations have been removed ...
Sexual conflict - Evolutionary Biology
... suggests that there is substantial antagonistic adult fitness variation, with genes that benefit males being simultaneously detrimental to females and vice versa. However, it is possible that much of the adult fitness variation attributable to unconditionally deleterious mutations have been removed ...
... suggests that there is substantial antagonistic adult fitness variation, with genes that benefit males being simultaneously detrimental to females and vice versa. However, it is possible that much of the adult fitness variation attributable to unconditionally deleterious mutations have been removed ...
Cat Behavior and Training - Cat Neutering and Behavior
... and an incision is made over each side of the scrotal sac so that each testicle can be excised or completely removed. External sutures are not generally required. In males both testicles descend prior to birth from inside the abdominal cavity through the inguinal canal into the scrotal sac. In some ...
... and an incision is made over each side of the scrotal sac so that each testicle can be excised or completely removed. External sutures are not generally required. In males both testicles descend prior to birth from inside the abdominal cavity through the inguinal canal into the scrotal sac. In some ...
Ecology and Evolution of the Enigmatic Eclectus Parrot
... each nest tree comprised parents with their grown offspring, and it was hypothesized that the parents used their ability to manipulate the sex of offspring to skew output toward males because they help at the nest. However, the finding that the additional males are all unrelated to the breeders and ...
... each nest tree comprised parents with their grown offspring, and it was hypothesized that the parents used their ability to manipulate the sex of offspring to skew output toward males because they help at the nest. However, the finding that the additional males are all unrelated to the breeders and ...
Seduction
Seduction is the process of deliberately enticing a person, to lead astray, as from duty, rectitude, or the like; to corrupt, to persuade or induce to engage in sexual behaviour. The word seduction stems from Latin and means literally ""to lead astray"". As a result, the term may have a positive or negative connotation. Famous seducers from history or legend include Lilith, Giacomo Casanova and the fictional character Don Juan. Seduction as a phenomenon is not the subject of scientific interest, although similar, more specific terms like short-term mating, casual sex or mating strategies are used in evolutionary psychology. The Internet enabled the existence of a seduction community which is based on pseudoscientific discourse on seduction.Seduction, seen negatively, involves temptation and enticement, often sexual in nature, to lead someone astray into a behavioral choice they would not have made if they were not in a state of sexual arousal. Seen positively, seduction is a synonym for the act of charming someone — male or female — by an appeal to the senses, often with the goal of reducing unfounded fears and leading to their ""sexual emancipation"" Some sides in contemporary academic debate state that the morality of seduction depends on the long-term impacts on the individuals concerned, rather than the act itself, and may not necessarily carry the negative connotations expressed in dictionary definitions.