Abstract：
:C-peptide of insulin presents a promising new tool for behavioral ecologists that allows for regular, non-invasive assessment of energetic condition in wild animals. C-peptide is produced on an equimolar basis with insulin, thus is indicative of the body's response to available glucose and, with repeated measurement, provides a biomarker of energy balance. As yet, few studies have validated the efficacy of C-peptide for monitoring energy balance in wild animals. Here, we assess seasonal and interindividual variation in urinary C-peptide concentrations of East African chimpanzees (Pan troglodytes schweinfurthii). We assayed 519 urine samples from 13 adult male chimpanzees in the Kanyawara community of Kibale National Park, Uganda. C-peptide levels were significantly predicted by the total amount of fruit and the amount of preferred fruit in the diet. However, chimpanzees had very low C-peptide titers during an epidemic of severe respiratory illness, despite highly favorable feeding conditions. Kanyawara males had significantly lower C-peptide levels than males at Ngogo, a nearby chimpanzee community occupying a more productive habitat. Among Kanyawara males, low-ranking males had consistently higher C-peptide levels than dominant males. While counterintuitive, this result supports previous findings of costs associated with dominance in male chimpanzees. Our preliminary investigations demonstrate that C-peptide has wide applications in field research, providing an accessible tool for evaluating seasonal and individual variation in energetic condition, as well as the costs of processes such as immune function and reproduction.
journal_name
Horm Behavjournal_title
Hormones and behaviorauthors
Emery Thompson M,Muller MN,Wrangham RW,Lwanga JS,Potts KBdoi
10.1016/j.yhbeh.2008.11.005subject
Has Abstractpub_date
2009-02-01 00:00:00pages
299-305issue
2eissn
0018-506Xissn
1095-6867pii
S0018-506X(08)00313-9journal_volume
55pub_type
杂志文章abstract：:The adaptive value of social affiliation has been well established. It is unclear, however, what endogenous mechanisms may mediate affiliative behavior. The Australian zebra finch (Taeniopygia guttata) breeds colonially and adults maintain lifelong pair bonds that may be disrupted in the wild due to high mortality rat...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/s0018-506x(02)00012-0
更新日期：2003-01-01 00:00:00
abstract：:Rodent alarm chemosignals elicit various behavioral and physiological responses in conspecifics. This study employed a bioassay method, using a modification of the forced swim test, to demonstrate that the pituitary mediates production and/or secretion of an alarm chemosignal in rats subjected to stress. This was show...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1994.1011
更新日期：1994-06-01 00:00:00
abstract：:Exposure of female rats to estradiol during the perinatal period has profound effects on GABAergic neurotransmission that are crucial to establish sexually dimorphic brain characteristics. We previously showed that neonatal β-estradiol 3-benzoate (EB) treatment decreases brain concentrations of the neurosteroid allopr...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2016.10.005
更新日期：2017-01-01 00:00:00
abstract：:The morphology and behavior of female rodents is partially masculinized as a result of residence near males in the same uterine horn (Clemens effect). Two hypothetical mechanisms have been proposed to account for this effect. In the first hypothesis ("contiguity") androgens secreted by males in utero are proposed to d...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(84)90032-1
更新日期：1984-12-01 00:00:00
abstract：:Competition among males for a limited number of females may result in the expression of condition-dependent alternative mating tactics. In such cases, decision rules mediating mating tactic expression are likely to be influenced by a male's external as well as internal environment. For example, experimental studies wi...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2005.09.004
更新日期：2006-04-01 00:00:00
abstract：:Among rodents that carry hantaviruses, males are more likely to engage in aggression and to be infected than females. One mode of hantavirus transmission is via the passage of virus in saliva during wounding. The extent to which hantaviruses cause physiological changes in their rodent host that increase aggression and...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2007.07.001
更新日期：2007-11-01 00:00:00
abstract：:This paper reviews evidence that, in some cases, steroid hormones rapidly modulate behaviors by binding to specific cell-surface receptors on neurons. The evidence comes from research with an amphibian model, Taricha granulosa. In Taricha, stress and corticosterone inhibit reproductive behaviors with a rapidity that i...
journal_title：Hormones and behavior
pub_type： 杂志文章,评审
doi：10.1006/hbeh.1994.1049
更新日期：1994-12-01 00:00:00
abstract：:In the tammar wallaby, Macropus eugenii, the expression of male-type sexual behavior is apparently determined by the activating effects of testicular hormones in adulthood. The incidence of male-type copulatory behavior and sexual checking behavior was compared in intact (control) males, control females, testosterone-...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1996.0049
更新日期：1996-12-01 00:00:00
abstract：:Transient shifts in testosterone occur during competition and are thought to positively influence dominance behavior aimed at enhancing social status. However, individual differences in testosterone reactivity to status contests have not been well-studied in relation to real-time expressions of competitive behavior am...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2019.104665
更新日期：2020-07-01 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：:We administered the synthetic estrogen, diethylstilbestrol (DES), or the antiestrogen, tamoxifen, to pregnant guinea pigs and observed the consequences for sexual differentiation of their female offspring. Hormones were administered during the period when treatment of fetuses with testosterone influences the developme...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(87)90024-9
更新日期：1987-09-01 00:00:00
abstract：:In New World monkeys of the family Callitrichidae (marmosets and tamarins), females frequently give birth to dizygotic twins. Twins share a placental circulation throughout fetal development and are hemopoietic chimeras. Despite this, there is no masculinization (freemartinism) in females which develop next to a male ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1993.1016
更新日期：1993-06-01 00:00:00
abstract：:Most nonhuman primate research on risk factors underlying vulnerability to stress has focused on early psychosocial experiences in various species of macaques. To test for genetic and experiential effects on emotional vulnerability in randomly bred squirrel monkeys, here we combined a paternal half-sibling analysis wi...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1999.1547
更新日期：1999-12-01 00:00:00
abstract：:The anti-estrogen tamoxifen (Tam), which has been shown to dramatically suppress offensive behavior in male rats without markedly influencing other aspects of the social encounter, was tested for its effectiveness in mice. TO strain albino mice were given control injections or 50 or 100 micrograms of Tam for 4 or 8 da...
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：:We hypothesize that beneficial effects of estradiol on cognitive performance diminish with age and time following menopause due to a progressive decline in basal forebrain cholinergic function. This study tested whether galanthamine, a cholinesterase inhibitor used to treat memory impairment associated with Alzheimer'...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2011.08.010
更新日期：2011-11-01 00:00:00
abstract：:Stress during pregnancy and the postpartum can influence the well-being of both the mother and her offspring. Prolonged elevated levels of glucocorticoids are associated with depression and we developed an animal model of postpartum depression/stress based on high levels of corticosterone (CORT) during the postpartum....
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2010.07.012
更新日期：2010-11-01 00:00:00
abstract：:This study examined the effects of long-term estrogen treatment (sc 17 beta-estradiol minipellets) on learning in C57BL/6J female and male mice using a position discrimination task in the T-maze and a win-stay task (1/8 arms baited) in the radial arm maze (RAM). In addition, hippocampal monoamines and ChAT activity we...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.2001.1738
更新日期：2002-02-01 00:00:00
abstract：:Mating, marking and the sexually dimorphic area (SDA) were studied in male gerbils that were castrated or sham-operated on the day of birth and in females given testosterone (T) propionate or oil 1 day later. Other females received dihydrotestosterone (DHT), R1881, estradiol benzoate (EB), R2858, DHT and EB, or DHT an...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1996.0015
更新日期：1996-06-01 00:00:00
abstract：:Most work investigating modulation of testosterone (T) levels in birds has focused on northern temperate and Arctic species, and to a lesser degree, tropical species. Studies exploring modulation of T in birds in temperate regions of the Southern Hemisphere are lacking. Here we explore patterns of T secretion across t...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2011.05.002
更新日期：2011-07-01 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：:Androgens act on the CNS to affect motor function through interaction with a widespread distribution of intracellular androgen receptors (AR). This review highlights our work on androgens and process outgrowth in motoneurons, both in vitro and in vivo. The actions of androgens on motoneurons involve the generation of ...
journal_title：Hormones and behavior
pub_type： 杂志文章,评审
doi：10.1016/j.yhbeh.2008.01.014
更新日期：2008-05-01 00:00:00
abstract：:The intravenous injection of several corticosteroids in the spayed estrogen-primed rat resulted, 5 min later, in a remarkable induction of lordosis response for deoxycorticosterone and 11-deoxycortisol. A lower but important effect was induced with corticosterone and 17 alpha-hydroxyprogesterone. A chemical structure-...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(90)90033-t
更新日期：1990-12-01 00:00:00
abstract：:Chronic stress in various forms increases the risk for cognitive dysfunction, dementia and Alzheimer's disease. While the pathogenesis behind these findings is unknown, growing evidence suggests that chronic increase in neurosteroid levels, such as allopregnanolone, is part of the mechanism. We treated wild-type C57BL...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2015.10.010
更新日期：2016-02-01 00:00:00
abstract：:Neonatal administration of clomipramine (CMI) induces diverse behavioral and neurochemical alterations in adult male rats that resemble major depression disorder. However, the possible behavioral alterations in adult female rats subjected to neonatal treatment with clomipramine are unknown. Therefore, the aim of this ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2017.06.004
更新日期：2017-08-01 00:00:00
abstract：:This study investigated the effect of exogenous 11-ketotestosterone (11KT) and testosterone (T), two important androgens involved in fish reproduction, as well as cyproterone acetate (CYA), an antiandrogen, on behaviors of male bluegill (Lepomis macrochirus) during prespawning and parental care periods. Parental male ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(91)90011-6
更新日期：1991-09-01 00:00:00
abstract：:Attention-deficit/hyperactivity disorder (ADHD) in adults is associated with significant impairment in many life activities and may thus increase the risk of chronic stress in everyday life. We compared adults with a DSM-IV ADHD diagnosis (n=28) with healthy controls (n=28) regarding subjective stress and amounts of s...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2008.12.004
更新日期：2009-03-01 00:00:00
abstract：:We studied the role of progesterone receptor (PR) in the display of female sexual behavior during postpartum estrus in rats. Adult female rats were treated with the PR antagonist, RU486 (1.25 and 5 mg), 3 h after parturition and sexual behavior was evaluated throughout the first postpartum day. Estradiol and progester...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2010.10.008
更新日期：2011-01-01 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：: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
abstract：:It is known that the early environment affects the mental development of rodent and human offspring. However, it is not known specifically whether a postpartum depressive state influences the depressive state in offspring. Using learned helplessness (LH) in rats as an animal model of depression, we examined the influe...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2009.03.016
更新日期：2009-06-01 00:00:00
