Abstract：
:To determine across-year patterns in plasma testosterone (T) and corticosterone (B) levels in free-living birds, we took blood samples in the same 2-week breeding period during 4 consecutive years from territorial male red-winged blackbirds. We used our data to test predictions of the "challenge hypothesis" of T secretion and also to examine hormonal correlations with age, breeding experience, breeding density, and reproductive success. Average T and B levels across years were not significantly different. Within individuals, T levels between years were, in general, highly variable. T levels of males with territories in high-density breeding areas were significantly higher than those of males with territories in low-density areas. T levels were positively correlated with harem size and there was a trend for males with high T levels to fledge more offspring. We found no relationships between T and B levels and male age or breeding experience. Some results of the study were consistent with the predictions of the challenge hypothesis. This study constitutes one of the few examinations of across-year patterns in circulating hormone levels in wild populations.
journal_name
Horm Behavjournal_title
Hormones and behaviorauthors
Beletsky LD,Orians GH,Wingfield JCdoi
10.1016/0018-506x(92)90011-jkeywords:
subject
Has Abstractpub_date
1992-09-01 00:00:00pages
420-32issue
3eissn
0018-506Xissn
1095-6867pii
0018-506X(92)90011-Jjournal_volume
26pub_type
杂志文章abstract：:Testosterone is thought to be positively associated with "mating effort", or the initiation and establishment of sexual relationships (Wingfield et al., 1990). Yet, because testosterone is negatively associated with nurturance (van Anders et al., 2011), high levels of testosterone may be incompatible with relationship...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2014.03.003
更新日期：2014-04-01 00:00:00
abstract：:Progesterone (P₄) and its metabolites, rapidly facilitate lordosis of rats partly through actions in the ventral tegmental area (VTA). The study of membrane progestin receptors (mPRs), of the Progestin and AdipoQ Receptor (PAQR) superfamily, has been limited to expression and regulation, instead of function. We hypoth...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2013.05.012
更新日期：2013-08-01 00:00:00
abstract：:During late pregnancy, female mice of the DBA/2J inbred strain are more likely to exhibit aggressive behavior toward a standard stimulus intruder male than C57BL/6J females. This strain difference can not be accounted for by differences in circulating levels of progesterone (P) since pregnant DBA/2J and C57BL/6J femal...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(88)90033-5
更新日期：1988-03-01 00:00:00
abstract：:In a previous study we found that mother rats show more drinking responses than virgins in the punished drinking paradigm, an animal model for anxiety. The present investigation was carried out to determine the possible mechanisms underlying this naturally occurring anticonflict effect. In Experiment 1, we investigate...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(90)90004-h
更新日期：1990-06-01 00:00:00
abstract：:Ghrelin is an orexigenic hormone that regulates homeostatic and reward-related feeding behavior. Recent evidence indicates that acylation of ghrelin by the gut enzyme ghrelin O-acyl transferase (GOAT) is necessary to render ghrelin maximally active within its target tissues. Here we tested the hypothesis that GOAT act...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2012.08.009
更新日期：2012-11-01 00:00:00
abstract：:Short-term fluctuations in steroid hormones such as estradiol (E2) and progesterone (P) can affect the concentration of hippocampal dendritic spines in adult, cycling nulliparous female rats. Pregnancy is characterized by a significantly longer duration of substantially elevated E2 and P compared to the estrous cycle....
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2005.05.017
更新日期：2006-02-01 00:00:00
abstract：:The concept of personality implies individual differences in behavior and physiology that show some degree of repeatability/consistency over time and across contexts. Most studies of animal personality, particularly studies of individuals' variation in physiological mechanisms, have been conducted on selected individu...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2006.10.006
更新日期：2007-02-01 00:00:00
abstract：:There is recent evidence that cryoanesthesia, commonly used during neonatal hormone manipulations (e.g., gonadectomy), has deleterious effects on the morphology of the splenium of the corpus callosum and primary visual cortex in adult rats of both sexes. (Nuñez and Juraska, 1998; Nuñez, Kim, and Juraska, 1998). In the...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.2000.1572
更新日期：2000-05-01 00:00:00
abstract：:The role of gonadal hormones in the production of five odors that are attractive to the opposite sex was investigated in meadow voles, Microtus pennsylvanicus. Preferences of intact male and female voles for the scents of same- versus opposite-sex conspecifics were examined. The attractiveness of opposite-sex scents f...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1993.1038
更新日期：1993-12-01 00:00:00
abstract：:Ovariectomized rats were hormonally primed with 10 microg estradiol benzoate or with estradiol benzoate plus 500 microg progesterone. Rats received a bilateral infusion with 200 ng of the 5-HT(1B/1D) receptor antagonist, N-[4-methoxy-3-(4-methyl-1-piperazinyl)phenyl]-2'-methyl-4'-(5-methyl-1,2,4-oxadiazol-3-yl)-1-1'-b...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2008.09.011
更新日期：2009-01-01 00:00:00
abstract：:The precise impact of age-related changes in hormone levels on cognition in men is still unclear due to differing study designs and contradictory findings. This study was undertaken to examine the relationship between endogenous sex hormone levels and cognitive functioning in healthy older men using a comprehensive ba...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2010.01.004
更新日期：2010-03-01 00:00:00
abstract：:In many species, females are more sexually attractive to males near ovulation. Some evidence suggests a similar pattern in humans, but methodological limitations prohibit firm conclusions at present, and information on physiological mechanisms underlying any such pattern is lacking. In 202 normally-cycling women, we e...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2012.11.007
更新日期：2013-01-01 00:00:00
abstract：:The effects of prolonged estrogen treatment were studied in two groups of eight ovariectomized heifers. In Group I, four animals were treated with increasing doses of estradiol benzoate (300 micrograms/day to 1.5 mg/day) for 180 days. In Group II, four animals were treated with 1.5 mg/day for 90 days. In each group th...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(90)90016-q
更新日期：1990-09-01 00:00:00
abstract：:Social competence - the ability of animals to dynamically adjust their social behavior dependent on the current social context - is fundamental to the successful establishment and maintenance of social relationships in group-living species. The social opportunity paradigm, where animals rapidly ascend a social hierarc...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2016.11.001
更新日期：2017-01-01 00:00:00
abstract：:It has been suggested that male achievement in sports and athletics is correlated with a putative measure of prenatal testosterone the 2nd to 4th digit ratio (2D:4D). It is not known whether this association also extends to females, or whether the association results from an effect of testosterone on behavior (such as...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2005.11.006
更新日期：2006-04-01 00:00:00
abstract：:This confirmatory work is aimed to test that the hypothesis that the gastrin releasing peptide (GRP) receptor - the BB2 receptor - is necessary for reduction of meal size (MS) and prolongation of the intermeal interval (IMI) by the small and the large forms of GRP in the rat, GRP-10 and GRP-29, and to confirm the site...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2016.06.012
更新日期：2016-09-01 00:00:00
abstract：:It has previously been shown that pre-pubertal or adult gonadectomy (GX) increases ethanol intake in male rats. This study examined whether this sex-selective increase reflects a GX-induced maintenance in males of more adolescent-typical responsiveness to ethanol characterized by enhanced sensitivity to positive (e.g....
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2014.04.015
更新日期：2014-07-01 00:00:00
abstract：:Among the suite of seasonal adaptations displayed by nontropical rodents, some species demonstrate increased territorial aggression in short compared with long day lengths despite basal levels of testosterone. The precise physiological mechanisms mediating seasonal changes in aggression, however, remain largely unknow...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2004.07.001
更新日期：2004-12-01 00:00:00
abstract：:Aggressive encounters are accompanied by a release of stress hormone, and this corticosterone (CORT) secretion could influence aggressive behavior in subsequent encounters. We investigated the modulating effects of CORT on aggressive behavior in the context of a 5-day social experience in male green anole lizards. In ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/s0018-506x(03)00139-9
更新日期：2003-09-01 00:00:00
abstract：:We examined associations between prenatal exposure to perfluorohexane sulfonic acid (PFHxS), perfluoroheptanoic acid (PFHpA), perfluorononanoic acid (PFNA), and perfluorodecanic acid (PFDA) - and child behaviour (SDQ-total) and hyperactivity (sub-scale) at 5-9years of age in birth cohorts from Greenland and Ukraine. P...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2017.11.007
更新日期：2018-05-01 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
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2013.08.006
更新日期：2013-09-01 00:00:00
abstract：:This article is part of a Special Issue "Chemosignals and Reproduction". In mammalian species, odor cues emitted by the newborn are essential to establish maternal behavior at parturition and coordinate early mother-infant interactions. Offspring odors become potent attractive stimuli at parturition promoting the cont...
journal_title：Hormones and behavior
pub_type： 杂志文章,评审
doi：10.1016/j.yhbeh.2014.06.018
更新日期：2015-02-01 00:00:00
abstract：:Extended biparental care is rare in insects but provides an excellent opportunity to investigate the interaction between the endocrine system and the physical and social environment in the regulation of this behavior. Burying beetles (Nicrophorus spp.) have facultative biparental care and depend on locating a small ve...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2003.09.012
更新日期：2004-03-01 00:00:00
abstract：:Naked mole-rats (Heterocephalus glaber) are fossorial, eusocial rodents that live in colonies which typically include 60-80 individuals. Generally, only one of the females and 1-3 of the males in a colony are reproductives. The reproductives engage in mutual genital nuzzling behavior that is rarely exhibited by subord...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2006.01.013
更新日期：2006-06-01 00:00:00
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 i...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2007.01.007
更新日期：2007-04-01 00:00:00
abstract：:Female hormonal contraceptive use has been associated with a variety of physical and psychological side effects. Women who use hormonal contraceptives report more intense affective responses to partner infidelity and greater overall sexual jealousy than women not using hormonal contraceptives. Recently, researchers ha...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2011.10.011
更新日期：2012-01-01 00:00:00
abstract：:Previous studies in our laboratory have shown that estradiol and progesterone affect beta-endorphin and Met-enkephalin levels in specific brain regions and that these effects are diurnally controlled. The present investigation was conducted to evaluate the effects of estradiol and progesterone on pain latency and brai...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1996.0029
更新日期：1996-09-01 00:00:00
abstract：:Studies examining the roles of estrogens and progestins on spatial cognition have been highly contradictory. To determine if the hormonal environment of pregnancy affects spatial cognition, pregnant (n = 7) and virgin (n = 7) Hooded Long-Evans rats were tested in a Morris water maze throughout the 3 weeks of pregnancy...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2005.08.002
更新日期：2006-03-01 00:00:00
abstract：:Experiments were conducted to investigate the sex-specific differences to feeding responses of the shore crab Carcinus maenas throughout the year. Results demonstrate that female shore crabs exhibit stronger feeding responses than males throughout the year with a significantly reduced feeding response in males during ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2007.03.004
更新日期：2007-08-01 00:00:00
abstract：:Most seasonally breeding songbirds display dramatic seasonal fluctuations in plasma testosterone (T) levels and mate attraction behaviors, including song. However, males of some songbird species, such as the European starling (Sturnus vulgaris), continue to sing at high levels after the breeding season, when T levels ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.2002.1824
更新日期：2002-11-01 00:00:00
