Testing the mate-choice hypothesis of the female orgasm
... Pollet & Nettle, 2009), Costa and Brody (2007) found that overall relationship quality was associated with greater orgasm frequency during penetrative sex. However, neither Zietsch et al. (2011) nor Thornhill et al. (1995) found a relationship between relationship commitment or length and orgasm fre ...
... Pollet & Nettle, 2009), Costa and Brody (2007) found that overall relationship quality was associated with greater orgasm frequency during penetrative sex. However, neither Zietsch et al. (2011) nor Thornhill et al. (1995) found a relationship between relationship commitment or length and orgasm fre ...
Pair-Bonding Strategies
... Everything about her delighted him. The lines of her body were athletic, lean, young, and hard. She laughed at all of his jokes and shared his twisted sense of humor and egocentric world-view. She seemed to understand everything about him, and he thought he understood everything about her. He looked ...
... Everything about her delighted him. The lines of her body were athletic, lean, young, and hard. She laughed at all of his jokes and shared his twisted sense of humor and egocentric world-view. She seemed to understand everything about him, and he thought he understood everything about her. He looked ...
Strategic Self-Promotion and Competitor
... context in which the tactic is performed and the sex of the actor who performed the tactic to account for the variance in effectivenessjudgments. We first present interaction hypotheses and then move to main effect hypotheses. Hypothesis 1: Tactics involving cues to sexual availability will be judge ...
... context in which the tactic is performed and the sex of the actor who performed the tactic to account for the variance in effectivenessjudgments. We first present interaction hypotheses and then move to main effect hypotheses. Hypothesis 1: Tactics involving cues to sexual availability will be judge ...
Modelling the evolution and consequences of mate choice
... This thesis considers the evolution and the consequences of mate choice across a variety of taxa, using game theoretic, population genetic, and quantitative genetic modelling techniques. Part I is about the evolution of mate choice. In chapter 2, a population genetic model shows that mate choice is ...
... This thesis considers the evolution and the consequences of mate choice across a variety of taxa, using game theoretic, population genetic, and quantitative genetic modelling techniques. Part I is about the evolution of mate choice. In chapter 2, a population genetic model shows that mate choice is ...
Developmental perspective on the evolution of sexual ornaments
... 1992; Rowe, 1999). Other sexual traits function to facilitate mate choice, copulation or gamete transfer mechanistically, as in the case of animals’ genitalia or plants’ flower displays. In this case, the morphology of the other sex (Eberhard, 1985; Dixson and Anderson, 2002), or that of pollinators ...
... 1992; Rowe, 1999). Other sexual traits function to facilitate mate choice, copulation or gamete transfer mechanistically, as in the case of animals’ genitalia or plants’ flower displays. In this case, the morphology of the other sex (Eberhard, 1985; Dixson and Anderson, 2002), or that of pollinators ...
Genetic Correlations with Floral Display Lead to Sexual Dimorphism
... stomatal ratio was set at 0.4 (the ratio of stomata on the two sides of the leaves in this species). All subsequent measurements of physiology were taken 1 month after flowering began for each plant for both selection programs. To measure dark respiration of leaves in selection program 1, plants wer ...
... stomatal ratio was set at 0.4 (the ratio of stomata on the two sides of the leaves in this species). All subsequent measurements of physiology were taken 1 month after flowering began for each plant for both selection programs. To measure dark respiration of leaves in selection program 1, plants wer ...
Parental Investment and Sexual Selection
... Bateman's argument can be stated in a more precise and general form such that the breeding system (for example, monogamy) as well as the adult sex ratio become functions of a single variable controlling sexual selection. I first define parental investment as any investment by the parent in an indivi ...
... Bateman's argument can be stated in a more precise and general form such that the breeding system (for example, monogamy) as well as the adult sex ratio become functions of a single variable controlling sexual selection. I first define parental investment as any investment by the parent in an indivi ...
SEXUAL SELECTION AND THE DESCENT OF MAN 1871-1971
... Bateman's argument can be stated in a more precise and general form such that the breeding system (for example, monogamy) as well as the adult sex ratio become functions of a single variable controlling sexual selection. I first define parental investment as any investment by the parent in an indivi ...
... Bateman's argument can be stated in a more precise and general form such that the breeding system (for example, monogamy) as well as the adult sex ratio become functions of a single variable controlling sexual selection. I first define parental investment as any investment by the parent in an indivi ...
Sexual Communication with Pheromones Ring T. Card6 and
... chemically attract females from a few centimeters away after they have been attracted from long distances by the females' pheromone (Baker and Cardk, 1979b). In the salt marsh caterpillar, Estigmene acraea, males hang from plants just after sunset and inflate huge coremata at the end of their abdome ...
... chemically attract females from a few centimeters away after they have been attracted from long distances by the females' pheromone (Baker and Cardk, 1979b). In the salt marsh caterpillar, Estigmene acraea, males hang from plants just after sunset and inflate huge coremata at the end of their abdome ...
Human Hips, Breasts and Buttocks: Is Fat Deceptive?
... not: Why should deceptive fat deposits have evolved, rather than the evolution of greater extremes in the actual traits that are being mimicked by the fat deposits? The implication is that there are expenses associated with having wide pelvises and large mammary glands that are compensated for in se ...
... not: Why should deceptive fat deposits have evolved, rather than the evolution of greater extremes in the actual traits that are being mimicked by the fat deposits? The implication is that there are expenses associated with having wide pelvises and large mammary glands that are compensated for in se ...
Tess of the D`Urbervilles
... Alec often presented on horseback or driving a carriage / cart – Actions symbolically suggestive of his position of power which he uses to exploit, dominate and control Tess. Eg. the dog-cart ride shows Alec’s mastery of the mare - “If any living man can manage this horse I can”; ‘…it was evident th ...
... Alec often presented on horseback or driving a carriage / cart – Actions symbolically suggestive of his position of power which he uses to exploit, dominate and control Tess. Eg. the dog-cart ride shows Alec’s mastery of the mare - “If any living man can manage this horse I can”; ‘…it was evident th ...
Defining individual quality over lifetimes and selective contexts
... mating success as a measurement of fitness. In this species, males compete for mates and larger size confers increased competitive success and allows males to overcome female resistance. By contrast, females prefer smaller males resulting in opposing selection on male size. Several other species tha ...
... mating success as a measurement of fitness. In this species, males compete for mates and larger size confers increased competitive success and allows males to overcome female resistance. By contrast, females prefer smaller males resulting in opposing selection on male size. Several other species tha ...
THE EVOLUTION OF MALE TRAITS IN SOCIAL INSECTS Jacobus J
... 89, 103, 111), the increased longevity of queens induced selection for a similar life span for males (111, 125). However, only the females build nests and provision offspring in the Hymenoptera (115, 120), so that the longevity of stored sperm had to increase with female life span. This happened mul ...
... 89, 103, 111), the increased longevity of queens induced selection for a similar life span for males (111, 125). However, only the females build nests and provision offspring in the Hymenoptera (115, 120), so that the longevity of stored sperm had to increase with female life span. This happened mul ...
A Guide to Sexual Selection Theory
... odors, ornaments, and conspicuous behaviors that are present in one sex only and cannot be easily explained as adaptations to the ecological conditions of a species. Darwin was well aware of the complex nature of sexual selection, “depending as it does, on the ardour of love, the courage, and the ri ...
... odors, ornaments, and conspicuous behaviors that are present in one sex only and cannot be easily explained as adaptations to the ecological conditions of a species. Darwin was well aware of the complex nature of sexual selection, “depending as it does, on the ardour of love, the courage, and the ri ...
Polyandry as a mediator of sexual selection before and after mating
... (figure 2a,c). It is now clear that female reproductive success can also depend on number of mates, because of direct and indirect benefits, and because of effects of genetic diversity within broods. Indeed, a recent study of the cricket Gryllus campestris reported that, in a natural population, the ...
... (figure 2a,c). It is now clear that female reproductive success can also depend on number of mates, because of direct and indirect benefits, and because of effects of genetic diversity within broods. Indeed, a recent study of the cricket Gryllus campestris reported that, in a natural population, the ...
Sexual selection, sexual conflict and the evolution of ageing and life
... species. For example, male–male combat may result in cumulative somatic deterioration. This is particularly true in insects, which are unable to repair damage to their exoskeleton. Since females do not engage in combat, such cumulative damage may result in higher mortality and ageing rates in males, ...
... species. For example, male–male combat may result in cumulative somatic deterioration. This is particularly true in insects, which are unable to repair damage to their exoskeleton. Since females do not engage in combat, such cumulative damage may result in higher mortality and ageing rates in males, ...
variation in mate choice and mating preferences: a review of causes
... unchanged. At present, evidence for stability is based on data that the mean preference function at the population level is unchanged (e.g. Ryan et al., ). However, selection on female choosiness could lead to very different patterns of mate choice. For example, two species could both have audit ...
... unchanged. At present, evidence for stability is based on data that the mean preference function at the population level is unchanged (e.g. Ryan et al., ). However, selection on female choosiness could lead to very different patterns of mate choice. For example, two species could both have audit ...
Possible ecological risks of transgenic organism release when
... number of transgenic fish will spread as a result of enhanced mating advantage, but the reduced viability of offspring will cause eventual local extinction of both populations. Such risks should be evaluated with each new transgenic animal before release. ...
... number of transgenic fish will spread as a result of enhanced mating advantage, but the reduced viability of offspring will cause eventual local extinction of both populations. Such risks should be evaluated with each new transgenic animal before release. ...
Reprint
... Arnqvist 2001; Hosken et al. 2002; Nilsson et al. 2002; Long et al. 2006). However, analyses of formal models suggest that patterns yielded from population crosses cannot be used to distinguish sexually antagonistic coevolution from alternative models of male female coevolution (Parker & Partridge 1 ...
... Arnqvist 2001; Hosken et al. 2002; Nilsson et al. 2002; Long et al. 2006). However, analyses of formal models suggest that patterns yielded from population crosses cannot be used to distinguish sexually antagonistic coevolution from alternative models of male female coevolution (Parker & Partridge 1 ...
parent-offspring conflict over mating: a replication and extension study
... Likert scale: 3 = indispensable, 2 = important, 1 = desirable, but not very important, and 0 = irrelevant or unimportant. In-law vs. Mating Preferences Comparisons Sexually mature individuals with children were chosen as subjects for this study, because they can act both as parents and mate seekers. ...
... Likert scale: 3 = indispensable, 2 = important, 1 = desirable, but not very important, and 0 = irrelevant or unimportant. In-law vs. Mating Preferences Comparisons Sexually mature individuals with children were chosen as subjects for this study, because they can act both as parents and mate seekers. ...
Sexual segregation in ungulates: a comparative test of three
... was proposed as a central factor in the evolution of sexual segregation in ungulates. We tested three hypotheses put forward to explain sexual segregation : the predation-risk, the forage-selection, and the activity budget hypothesis. We included in our analyses ungulate species ranging from non-dim ...
... was proposed as a central factor in the evolution of sexual segregation in ungulates. We tested three hypotheses put forward to explain sexual segregation : the predation-risk, the forage-selection, and the activity budget hypothesis. We included in our analyses ungulate species ranging from non-dim ...
Phenotypic correlates of male reproductive success in western gorillas
... assessments of the social structure have shown that up to 45% of silverbacks are living alone or in non-breeding groups with other males, longer-term measurements suggest that more than 80% of them may eventually acquire females (Parnell, 2002b; Gatti et al., 2004; Breuer et al., 2010), stressing th ...
... assessments of the social structure have shown that up to 45% of silverbacks are living alone or in non-breeding groups with other males, longer-term measurements suggest that more than 80% of them may eventually acquire females (Parnell, 2002b; Gatti et al., 2004; Breuer et al., 2010), stressing th ...
Male mating success and survival in the field with respect to size
... It has been suggested that the proportions of copulating and solitary males can be used to estimate the variance in male mating success (e.g., Arnold and Wade, 1984b). However, in our case the males were scanned only once. Since even the most attractive can not be in copula constantly, this approach ...
... It has been suggested that the proportions of copulating and solitary males can be used to estimate the variance in male mating success (e.g., Arnold and Wade, 1984b). However, in our case the males were scanned only once. Since even the most attractive can not be in copula constantly, this approach ...
Reprint
... occur. Furthermore, the strength of natural selection operating on the female preference function appears to determine the extent to which female fitness is depressed by antagonistic evolution. Identifying the nature of genetic variation in female preference functions and the strength of natural sel ...
... occur. Furthermore, the strength of natural selection operating on the female preference function appears to determine the extent to which female fitness is depressed by antagonistic evolution. Identifying the nature of genetic variation in female preference functions and the strength of natural sel ...
Evolutionary Psychology - College of Agriculture and Life Sciences
... When asked what his study of the natural world had revealed about the nature of God, biologist J. B. S. Haldane is reported to have made this reply: “That he has an inordinate fondness for beetles.” Haldane’s retort refers to the extraordinary diversity of beetle species found throughout the world—s ...
... When asked what his study of the natural world had revealed about the nature of God, biologist J. B. S. Haldane is reported to have made this reply: “That he has an inordinate fondness for beetles.” Haldane’s retort refers to the extraordinary diversity of beetle species found throughout the world—s ...
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.