Abstract：
:The song of songbirds is a testosterone-sensitive behavior that is controlled by brain regions expressing androgen receptors. At higher latitudes, seasonal singing is stimulated by increasing day-length and elevated circulating testosterone. However, a large number of songbird species inhabit equatorial regions under a nearly constant photoperiod, and the neuroendocrine mechanisms of seasonal song in these species have rarely been investigated. We studied males from an equatorial population of the silver-beaked tanager (Ramphocelus carbo), an Amazonian songbird. We found seasonality in dawn-song behavior, which was displayed continuously for more than half a year throughout an extended breeding territoriality stage. The seasonal activation of dawn-song was correlated with an increased area of androgen receptor expression in HVC, a major brain area of song control. However, testosterone levels remained low for several weeks after activation of dawn-song. Circulating levels of testosterone were elevated only later in the breeding season, coinciding with a higher dawn-song output and with the mating period. Our results suggest that the seasonal activation of dawn-song and territoriality involves an increase of androgen target cells in HVC. This mechanism could potentially function to circumvent adverse effects of high testosterone levels in a species with an extended breeding season.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Quispe R,Sèbe F,da Silva ML,Gahr Mdoi
10.1016/j.physbeh.2015.12.027subject
Has Abstractpub_date
2016-03-15 00:00:00pages
1-7eissn
0031-9384issn
1873-507Xpii
S0031-9384(15)30224-9journal_volume
156pub_type
杂志文章abstract：:Applying high temperature cooling concepts, i.e. high temperature cooling (T(supply) is 16-20°C) HVAC systems, in the built environment allows the reduction in the use of (high quality) energy. However, application of high temperature cooling systems can result in whole body and local discomfort of the occupants. Non-...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2012.07.008
更新日期：2012-09-10 00:00:00
abstract：:Data are presented which demonstrate the task generality of pituitary-adrenal changes that accompany avoidance conditioning. In two experiments a conditioned aversion to milk was established by pairing it with lithium chloride (LiCl). In Experiment 1 conditioned pituitary-adrenal activation occurred when, in a conflic...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(76)90006-8
更新日期：1976-12-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：2006-03-30 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.10.022
更新日期：2016-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(90)90148-w
更新日期：1990-02-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(92)90202-d
更新日期：1992-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(93)90309-4
更新日期：1993-11-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(88)90202-8
更新日期：1988-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：
更新日期：1996-08-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(82)90112-3
更新日期：1982-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.07.025
更新日期：2015-12-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2017.04.017
更新日期：2017-08-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 信件
doi：10.1016/j.physbeh.2018.11.007
更新日期：2019-02-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.05.012
更新日期：2015-10-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90261-1
更新日期：1986-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(02)00912-5
更新日期：2002-12-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：
更新日期：2014-01-30 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)00050-s
更新日期：1995-08-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2011.01.002
更新日期：2011-03-28 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(83)90015-x
更新日期：1983-02-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(01)00511-x
更新日期：2001-07-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(75)90213-9
更新日期：1975-10-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0031-9384(02)00882-x
更新日期：2002-11-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(91)90021-f
更新日期：1991-10-01 00:00:00
abstract：:The aim of this work was to study the evolution of rat food choice in relation to their age and metabolic parameters. Eighty Wistar rats were studied from birth to 13 weeks of age. At weaning, six litters were fed on a macronutrient self-selecting diet and four on a standard diet. In self-selecting males, protein inta...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(02)00676-5
更新日期：2002-05-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)02182-5
更新日期：1996-04-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)00314-9
更新日期：1995-04-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2019.02.028
更新日期：2019-05-15 00:00:00
abstract：:There is strong evidence from animal studies that prenatal stress has different effects on male and female offspring. In general, although not always, prenatal stress increases anxiety, depression and stress responses, both hypothalamic-pituitary-adrenal and cardiovascular, in female offspring rather than in male. Mal...
journal_title：Physiology & behavior
pub_type： 杂志文章,评审
doi：10.1016/j.physbeh.2012.02.011
更新日期：2012-07-16 00:00:00
