Abstract:
:Seasonal changes in the length of the daily photoperiod induce significant changes in social behavior. Hamsters housed in winter-like short photoperiods (SP) can express significantly higher levels of aggression than hamsters housed in long photoperiods (LP) that mimic summer. The mechanisms responsible for increasing aggressiveness in SP-exposed female hamsters are not well understood but may involve seasonal changes in the endocrine system. In experiment 1, the effects of SP exposure on the circulating levels of three adrenal hormones were determined. Short photoperiod exposure was found to significantly depress the circulating levels of cortisol and the adrenal androgen dehydropiandrosterone (DHEA) but significantly increased the circulating levels of the sulfated form of DHEA, DHEAS. Experiment 2 examined the effects of gonadal hormones on several different measures of aggression including its intensity in females housed in both long and short photoperiod. Exposure to SP resulted in high levels of aggression regardless of the endocrine state of the animal or the measure used to quantify aggression. In contrast, administration of estradiol to hamsters housed in LP significantly reduced aggression. The data of the present study support the hypothesis that SP-housed females are more aggressive than LP-housed females because SP exposure renders females insensitive to the aggression-reducing effects of ovarian hormones.
journal_name
Horm Behavjournal_title
Hormones and behaviorauthors
Gutzler SJ,Karom M,Erwin WD,Albers HEdoi
10.1016/j.yhbeh.2009.08.007subject
Has Abstractpub_date
2009-10-01 00:00:00pages
481-9issue
4eissn
0018-506Xissn
1095-6867pii
S0018-506X(09)00186-Xjournal_volume
56pub_type
杂志文章abstract::Perinatal treatment of female rats with androgen decreases the nuclear volume of the anteroventral periventricular nucleus of the preoptic area (AVPvN-POA). In order to examine the effect of androgen on neurogenesis, bromodeoxyuridine (BrdU) was given once on Day 15 of gestation (= E15) to pregnant rats that also rece...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1994.1027
更新日期:1994-12-01 00:00:00
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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
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2005.03.005
更新日期:2005-09-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1995.1002
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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
pub_type: 杂志文章
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更新日期:2018-01-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
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journal_title:Hormones and behavior
pub_type: 杂志文章
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更新日期:2006-12-01 00:00:00
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journal_title:Hormones and behavior
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更新日期:2012-04-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/0018-506x(86)90014-0
更新日期:1986-06-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/0018-506x(88)90008-6
更新日期:1988-09-01 00:00:00
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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
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2003.09.010
更新日期:2004-02-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2007.08.011
更新日期:2008-06-01 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.2018.05.008
更新日期:2018-08-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/0018-506x(88)90064-5
更新日期:1988-06-01 00:00:00
abstract::Our review focuses on findings from mammals as part of a Special Issue "30th Anniversary of the Challenge Hypothesis". Here we put forth an integration of the mechanisms through which testosterone controls territorial behavior and consider how reproductive experience may alter these mechanisms. The emphasis is placed ...
journal_title:Hormones and behavior
pub_type: 杂志文章,评审
doi:10.1016/j.yhbeh.2019.104645
更新日期:2020-07-01 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
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journal_title:Hormones and behavior
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pub_type: 杂志文章
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/0018-506x(90)90003-g
更新日期:1990-06-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2009.03.002
更新日期:2009-06-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/j.yhbeh.2013.12.011
更新日期:2014-02-01 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.2013.01.015
更新日期:2013-07-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.1994.1039
更新日期:1994-12-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
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更新日期:2006-08-01 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.2012.05.003
更新日期:2013-02-01 00:00:00
abstract::Japanese quail selected bidirectionally for adult mating frequency were utilized to study in vivo aromatization of testosterone (T) in relation to masculine copulatory behavior. Functionally castrated high (HM) and low mating (LM) line quail were injected with 75 microCi of [3H]T. One hour after the injection, all rad...
journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1016/0018-506x(83)90031-4
更新日期:1983-09-01 00:00:00