• males sing and fe
  • Zebra finch song behavior is sexually dimorphic: males sing and females do not.We have overcome these barriers by creating digital tools, including an image library of song nuclei from zebra finch brains.We have used this library for several terms, and students not only obtain significant experimental results but also make gains in understanding content, experimental controls, and inferential statistics (analysis of variance and post hoc tests). (nih.gov)
  • Zebra finch song behavior is sexually dimorphic: males sing and females do not. (nih.gov)
  • dimorphism
  • Trivers posited that differential parental investment between males and females drives the process of sexual selection, which leads to the evolution of sexual dimorphism in mate choice, competitive ability, and courtship displays (see also secondary sex characteristics). (wikipedia.org)
  • Additionally when looking at all standard external measurements it has been found they demonstrate significant sexual dimorphism. (wikipedia.org)
  • The alleles responsible for sexual dimorphism can be limited to expression in only one sex when they first appear, or the alleles could begin by being expressed in both sexes then become modified (repressed or promoted) in one sex by modifier genes or regulatory elements. (wikipedia.org)
  • maternal
  • Young animals can learn about flavors from the maternal diet that appear in the amniotic fluid and mother's milk, which may reduce neophobia for similarly flavored food types at weaning. (biomedsearch.com)
  • We investigated the effects of pre- and postnatal flavor exposure through the maternal diet on acceptance of a similarly flavored food and subsequent growth, health and behavior of newly weaned piglets. (biomedsearch.com)
  • monogamy
  • The Myth of Monogamy: Fidelity and Infidelity in Animals and People is a 2001 book by psychologist David P. Barash and psychiatrist Judith Eve Lipton. (wikipedia.org)
  • Sorry I was unfaithful, my brain chemicals made me do it Independent.ie Advice on monogamy from the animal kingdom New Scientist Monogamy not the norm among animals Providence Journal Can we learn about monogamy from animals? (wikipedia.org)
  • depends
  • The extent of the burrowing behavior depends on the type of soil present: in areas with fine deep soil their tunnels average 10.7m long and up to 51cm beneath the surface, whereas in shallow rocky soils the average length is 3.3m and they do not extend deeper than 19.4cm. (wikipedia.org)
  • populations
  • Given that the utilization of alternative mating strategies has been shown to fluctuate over time, it has been suggested that frequency or negative frequency-dependent selection is the mechanism through which alternative mating strategies are maintained in animal populations. (wikipedia.org)
  • biology
  • In 1999, she founded the Institute for Mind and Biology at the University of Chicago, a research institute designed to foster transdisciplinary research in mind-body interactions and the biological basis of behavior. (wikipedia.org)
  • sexes
  • It was found that during the critical period for sexual differentiation, histones associated with promoters of essential genes in masculinization of the brain (estrogen receptor α and aromatase) in the medial preoptic area, an area necessary for male sexual behavior, were differentially acetylated between the sexes. (biomedsearch.com)
  • For instance, mate choice and sexual selection can accelerate the evolution of physical differences between the sexes. (wikipedia.org)
  • Phenomena
  • It lists 26 phenomena not explained by current sexual-selection theory that are better explained by social selection. (wikipedia.org)
  • effects
  • He studied the effects of endocrines on behaviors through methods such as castration, isolation, brain legions, and hormone manipulation. (wikipedia.org)
  • anorexia
  • Flavor learning may be beneficial for piglets, which after the rather abrupt weaning in pig husbandry frequently show a period of anorexia, reduced health, and stress-induced behaviors. (biomedsearch.com)
  • selection
  • Love darts thus play a role in post-copulatory sexual selection. (wwnorton.com)
  • She is well known for her theistic evolutionism and critical studies on Charles Darwin's theory of sexual selection. (wikipedia.org)
  • In her 2009 book The Genial Gene, the case against sexual selection theory is continued and social-selection theory presented as an alternative. (wikipedia.org)
  • According to Roughgarden, sexual selection theory derives from a view of natural behavior predicated on the selfish-gene concept, competition and deception, whereas the social-selection theory derives from teamwork, honesty, and genetic equality. (wikipedia.org)
  • The major histocompatibility complex in sexual selection concerns how major histocompatibility complex (MHC) molecules allow for immune system surveillance of the population of protein molecules in a host's cells. (wikipedia.org)
  • Research on human mating strategies is guided by the theory of sexual selection, and in particular, Robert Trivers' concept of parental investment. (wikipedia.org)
  • The study of alternative mating strategies is critical to correctly characterizing the diverse sexual behavior practiced by animals in a population and understanding the strength of selection on these individuals. (wikipedia.org)
  • Successful strategies will be maintained through sexual selection. (wikipedia.org)
  • Alternative behaviors will be maintained through frequency-dependent selection because of their equal fitness benefits and functional equivalence. (wikipedia.org)
  • A second proposed model for the maintenance of alternative mating behaviors is status-dependent selection. (wikipedia.org)
  • brain
  • Studies of the brain have proven that pleasure and displeasure are an important component in the lives of animals. (wikipedia.org)
  • Through extensive research, scientists have been able to conclude that the brain reward system in animals is extremely similar to that of humans. (wikipedia.org)
  • Histone deacetylation during brain development is essential for permanent masculinization of sexual behavior. (biomedsearch.com)
  • experiments
  • They live a solitary life, however, experiments have shown that sociality does alter the rat's behaviors and that the rat does indeed have some ability to form generalized sociality. (wikipedia.org)
  • mate
  • Animal sexual behavior and mate choice directly affect social structure and relationships in many different mating systems, whether monogamous, polygamous, polyandrous, or polygynous. (wikipedia.org)
  • In a case where two phenotypes and strategies are possible, such as mate guarding or sneaking, there will be an intermediate point of intersection where the fitness gained from these alternative behaviors will be equivalent. (wikipedia.org)
  • individuals
  • In evolutionary psychology and behavioral ecology, human mating strategies are a set of behaviors used by individuals to attract, select, and retain mates. (wikipedia.org)
  • Though males and females in a given population typically employ a predominant reproductive strategy based on the overarching mating system, there is still significant variation in behavior among individuals of the same sex. (wikipedia.org)
  • Under changing circumstances, the existence of a variety of strategies allows individuals to choose the conditional behavior that will currently maximize their fitness. (wikipedia.org)
  • mates
  • As a result, certain animals will successfully use a conventional mating strategy while others employing this strategy will not obtain mates. (wikipedia.org)
  • Body Weight
  • Yet, prenatally exposed animals showed a higher food intake and a higher body weight in the first days after weaning, and a lower occurrence of diarrhoea than non-exposed piglets. (biomedsearch.com)
  • attitudes
  • This "sexual revolution" lead to more relaxed attitudes about sex outside of marriage and had a significant effect on women's ability to plan their families and careers. (csmonitor.com)
  • Your preschooler will continue to learn important sexual attitudes from you - from how you react to people of the opposite sex to how you feel about nudity. (kidshealth.org)
  • normal
  • They're reassured that these behaviors are perfectly normal and told that even the youngest children naturally explore their bodies. (kidshealth.org)
  • Society
  • She is also a fellow of the American Association for the Advancement of Science, the Animal Behavior Society, the American Psychological Society, the American Psychological Association, and the International Academy of Sex Research. (wikipedia.org)
  • social
  • These mating relationships may or may not be associated with social relationships, in which the sexual partners stay together to become parenting partners. (wikipedia.org)