Abstract:
:Androgen levels show strong patterns throughout the year in male vertebrates and play an important role in the seasonal modulation of the frequency, intensity and persistence of aggression. The Challenge Hypothesis (Wingfield, J.C., Hegner, R.E., Dufty, A.M., Ball, G.F., 1990. The "Challenge Hypothesis": Theoretical implications for patterns of testosterone secretion, mating systems, and breeding strategies. Am. Nat. 136, 829-846) predicts that seasonal patterns in androgen levels vary as a function of mating system, male-male aggression and paternal care. Although many studies have addressed these predictions, investigators have often assumed that the ratio of the breeding season maximum and breeding baseline concentrations (termed "androgen responsiveness") reflects hormonal responses due to social stimulation. However, increasing evidence suggests that seasonal androgen elevations are not necessarily caused by social interactions between males. Here, we separate the seasonal androgen response (R(seasonal)) and the androgen responsiveness to male-male competition (R(male-male)) to begin to distinguish between different kinds of hormonal responses. We demonstrate that R(seasonal) and R(male-male) are fundamentally different and should be treated as separate variables. Differences are particularly evident in single-brooded male birds that show no increase in plasma androgen levels during simulated territorial intrusions (STIs), even though R(seasonal) is elevated. In multiple-brooded species, STIs typically elicit a rise in androgens. We relate these findings to the natural history of single- and multiple-brooded species and suggest a research approach that could be utilized to increase our understanding of the factors that determine different types of androgen responses. This approach does not only include R(seasonal) and R(male-male), but also the androgen responsiveness to receptive females (R(male-female)) and to non-social environmental cues (R(environmental)), as well as the physiological capacity to produce and secrete androgens (R(potential)). Through such studies, we can begin to better understand how social and environmental factors may lead to differences in androgen responses.
journal_name
Horm Behavjournal_title
Hormones and behaviorauthors
Goymann W,Landys MM,Wingfield JCdoi
10.1016/j.yhbeh.2007.01.007subject
Has Abstractpub_date
2007-04-01 00:00:00pages
463-76issue
4eissn
0018-506Xissn
1095-6867pii
S0018-506X(07)00009-8journal_volume
51pub_type
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.2002.1771
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abstract::The self-grooming behavior of prepubescent male and female rats is described. Sex differences were observed in components of grooming addressed to the genitals, but not in other aspects of grooming. A hormonal basis for the sex difference was examined in two experiments. When females were injected with testosterone pr...
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journal_title:Hormones and behavior
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abstract::The transition to motherhood results in a number of hormonal, neurological, and behavioral changes necessary to ensure offspring survival. Once motherhood is established, further neurological and behavioral changes may result with additional parity and mothering. Recent research has shown that motherhood enhances both...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2005.05.016
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abstract::Although psychological changes are recognized to occur in rape assault survivors there is no information on the biochemical changes in these victims. This study compares urinary catecholamines and metabolites in 17 rape victims to two female control groups (one of which engaged in normal sexual intercourse and the oth...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/0018-506x(90)90027-u
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abstract::The objective of this study was to investigate the role of palmitoylethanolamide (PEA) in the regulation of energy homeostasis in goldfish (Carassius auratus). We examined the effects of acute or chronic intraperitoneal treatment with PEA (20 μg·g-1 body weight) on parameters related to food intake and its regulatory ...
journal_title:Hormones and behavior
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abstract::Genetic, social, and environmental conditions contribute to the development of depression, but the pathophysiological mechanisms are still unclear. Data accumulated in recent years provide significant evidence for a direct role of galanin (GAL). This study aimed to investigate the relation between SNPs in the galanine...
journal_title:Hormones and behavior
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doi:10.1016/j.yhbeh.2017.10.001
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journal_title:Hormones and behavior
pub_type: 杂志文章,评审
doi:10.1016/j.yhbeh.2014.02.007
更新日期:2014-06-01 00:00:00
abstract::Sexually selected traits confer greater reproductive benefits to individuals with more elaborate forms of the signal. However, whether these signals convey reliable information about the physiology underlying trait development remains unknown in many species. The steroid hormone corticosterone (CORT) mediates importan...
journal_title:Hormones and behavior
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/0018-506x(89)90063-9
更新日期:1989-06-01 00:00:00
abstract::The effects of marijuana's major psychoactive cannabinoid, ∆9-tetrahydrocannibinol (∆9-THC), were examined on memory in female rats by training subjects to respond under a repeated acquisition and delayed-performance procedure. During this task, subjects acquired a different 4-response sequence each session, which was...
journal_title:Hormones and behavior
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abstract::In estradiol-primed nonreceptive ovariectomized rats, activation of G protein-coupled estrogen receptor 1 (GPER) in the arcuate nucleus of the hypothalamus (ARH) rapidly facilitates sexual receptivity (lordosis). Estradiol priming activates ARH β-endorphin (β-END) neurons that then activate medial preoptic (MPN) μ-opi...
journal_title:Hormones and behavior
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abstract::The first issue of Hormones and Behavior was published 50 years ago in 1969, a time when most of the techniques we currently use in Behavioral Endocrinology were not available. Researchers have during the last 5 decades developed techniques that allow measuring hormones in small volumes of biological samples, identify...
journal_title:Hormones and behavior
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更新日期:2020-02-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章,评审
doi:10.1016/j.yhbeh.2007.08.007
更新日期:2008-01-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2013.04.001
更新日期:2013-05-01 00:00:00
abstract::Eating tasty foods dampens responses to stress - an idea reflected in the colloquial term 'comfort foods'. To study the neurobiological mechanisms by which palatable foods provide stress relief, we previously characterized a limited sucrose intake (LSI) paradigm in which male rats are given twice-daily access to 4 ml ...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2019.07.005
更新日期:2019-09-01 00:00:00
abstract::Testosterone (T) is often referred to as the "male hormone," but it can influence aggression, parental behavior, and immune function in both males and females. By experimentally relating hormone-induced changes in phenotype to fitness, it is possible to ask whether existing phenotypes perform better or worse than alte...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2013.03.005
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
pub_type: 杂志文章
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.2002.1839
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abstract::Fetal programming is emerging as a major conceptual model for understanding developmental origins of health and disease, including behavioral outcomes. As part of a larger study of prenatal stress and child development, we examined the association between prenatal hormone exposure and fear reactivity, a temperament di...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2009.12.012
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