Abstract：
:Steroid-responsive behaviors have been reported in various species; however, the reports thus far on the male Asian elephant (bull) during musth are few in number and most have been conducted on single captive animals for short time periods. The purpose of this investigation was to perform a longitudinal study on steroid-responsive behavior in 3 male Asian elephants from a captive herd of 11 male Asian elephants in Nepal. Male Asian elephants were 18, 25, and 43 years old. The animals had serum collected for 11 months and were observed on a daily basis for aggressive behavior according to the Species Survival Plan (SSP) collection protocol on SSP data sheets. Testosterone (T) and dihydrotestosterone (DHT) were measured in each animal by radioimmunoassay. Testosterone levels rose during musth 26-fold compared to nonmusth, and DHT was elevated 12-fold in musth. Maximal aggressive behavior episodes occurred during peak elevations of T and DHT, with correlation coefficients of 0.82 and 0.89, respectively. Therefore, we suggest that the aggressive episodes are dependent on elevated circulating androgens acting on androgen-responsive neural tissues.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Dickerman RD,Zachariah NY,Fouraker M,McConathy WJdoi
10.1016/s0031-9384(96)00563-xsubject
Has Abstractpub_date
1997-05-01 00:00:00pages
771-3issue
5eissn
0031-9384issn
1873-507Xpii
S0031-9384(96)00563-Xjournal_volume
61pub_type
杂志文章abstract：:Sexual behavior and serum levels of testosterone (T) and estradiol (E) were examined in five young and six old rhesus males (Macaca mulatta) before and after the injection of 500 and 1000 IU of HCG. The serum levels of T and E increased in both young and old males after injection of either dose of HCG. Serum levels of...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90346-6
更新日期：1989-10-01 00:00:00
abstract：:The effect of age and recurring stress responses on endogenous plasma arginine (ARG) concentrations were determined. Blood from catheterized young (3 months) and old (24 months) were used to ascertain the plasma concentrations of ARG under baseline conditions, during a 30-min immobilization experience and during a 3.5...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(93)90083-r
更新日期：1993-10-01 00:00:00
abstract：:Intake of saturated fats and simple carbohydrates, two of the primary components of a modern Western diet, is linked with the development of obesity and Alzheimer's Disease. The present paper summarizes research showing that Western diet intake is associated with cognitive impairment, with a specific emphasis on learn...
journal_title：Physiology & behavior
pub_type： 杂志文章,评审
doi：10.1016/j.physbeh.2010.12.003
更新日期：2011-04-18 00:00:00
abstract：:The examples of "synergism" reported in the taste literature fit the common definition of the term but may merely reflect normal additivity in the taste system. That is, the perceived intensities of these "synergistic" mixtures exceed the sums of the perceived intensities of the unmixed taste components (addition of p...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(80)90066-9
更新日期：1980-06-01 00:00:00
abstract：:California mice (Peromyscus californicus) breed primarily during the winter rainy season and generally terminate breeding during the dry summer months. This pattern of reproduction could be regulated by day length, availability of green vegetation, or water availability. The effects of photoperiod and green vegetation...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)00380-n
更新日期：1995-06-01 00:00:00
abstract：:Self-stimulation (SS) of both the medial prefrontal cortex (MPFC) and the dorsolateral hippocampus (HPC) is known to develop slowly, over a period of days. In both cases, the acquisition of bar-pressing can be markedly hastened by delivery of noncontingent electrical stimulation for several days prior to SS training. ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90198-8
更新日期：1986-01-01 00:00:00
abstract：:Recent studies suggest that the decreased drinking response to hypertonic saline produced by bilateral subdiaphragmatic vagotomy (VGX) is a function of the route of saline administration and the length of postoperative recovery. We determined the effects of VGX on drinking during the two hours after intraperitoneal an...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(82)90086-5
更新日期：1982-02-01 00:00:00
abstract：:Cocaine alters brain function from the early days of development throughout the entire life of an individual. Since the first preclinical research on cocaine sensitization was published, sex differences in response to the drug in adult rats have been noted. With the appearance of reports on "crack babies" during the 1...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2009.12.017
更新日期：2010-06-01 00:00:00
abstract：:The purpose of the current investigation was to compare the acute perceptual responses during low-load resistance exercise (RE) with clinical blood flow restriction (cBFR-RE) and practical blood flow restriction (pBFR-RE), and during conventional low- (LL-RE) and high-load resistance exercise (HL-RE), to determine if ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2020.113137
更新日期：2020-12-01 00:00:00
abstract：:Four groups of pigeons each were trained to perform four visual-discrimination tasks of varying difficulty. Two groups received the training binocularly and the other two monocularly. Two types of stimulus displays were used. In one display the two pecking keys were mounted in a horizontal arrangement, whereas, in the...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(84)90204-x
更新日期：1984-05-01 00:00:00
abstract：:The plasma corticosterone levels of rats were examined prior to their morning meal on Days 1, 7 and 20 of a regimen of 1 hr access daily to food mash and water. The relationship between external cues and meal provision was varied by feeding some groups immediately upon room entry each morning, and others with a variab...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(84)90097-0
更新日期：1984-08-01 00:00:00
abstract：:Cold water swim (CWS, 2 degrees C, 3.5 min) decreases the responsiveness to nociceptive stimuli in rats. The influence of various parameters of the CWS condition on stress-induced analgesia were evaluated by means of naltrexone effects. Naltrexone dose-dependently (but significantly only at high doses--21 mg/kg) parti...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(84)90308-1
更新日期：1984-04-01 00:00:00
abstract：:Obesity is a major public health concern and overconsumption of unhealthy fats and sugary beverages are contributing factors. Time-restricted feeding can reduce obesity-associated pathophysiological parameters by limiting the time of food consumption; however, the effects of time-restricted sugary water consumption ar...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2020.112905
更新日期：2020-09-01 00:00:00
abstract：:Exercise-related affective responses, particularly in-task, have been implicated as influencing behavioral maintenance. An extensive body of literature, primarily using aerobic modes in laboratory settings, has identified a relatively consistent inverse relationship between intensity and affect. This relationship is p...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2020.113261
更新日期：2021-03-01 00:00:00
abstract：:Testosterone (T) is critical for maintaining male sexual behavior (MSB) in rodents, in part by altering protein synthesis in a well-defined neural circuit. The specific timing of protein synthesis essential for expression of MSB has never been investigated. We administered the protein synthesis inhibitor anisomycin (A...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2011.08.025
更新日期：2012-01-18 00:00:00
abstract：:Sleep/wake expression in mice varies predictably with circadian phase. Such circadian rhythms are known to depend on intact suprachiasmatic nuclei (SCN) in the hypothalamus, but the mechanism by which SCN activity modulates sleep/wake expression is unknown. This paper examines the possibility that circadian patterns o...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(88)90375-7
更新日期：1988-01-01 00:00:00
abstract：:When animals are reared for conservational releases it is paramount to avoid reducing genetic and phenotypic variation over time. This requires an understanding of how diverging behavioural and physiological traits affect performance both in captivity and after release. In Atlantic salmon, emergence time from the spaw...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2017.03.028
更新日期：2017-06-01 00:00:00
abstract：:Early Pb exposure is known to disrupt the development of the hippocampus and result in deficits in learning and memory capacities and altered seizure susceptibility. The excitatory amino acid, NMDA, is found in high concentrations in the hippocampus and has been implicated in learning and memory functions and seizure ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(92)90398-l
更新日期：1992-10-01 00:00:00
abstract：:Jejunoileal bypass (JIB) surgery reduces food intake and body weight in obese humans and rats. Human bypass patients report visceral discomfort following surgery, and the present study assessed the aversive consequences of JIB in rats using a conditioned taste aversion paradigm. In Experiment 1 rats given a cherry-fla...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(85)90369-5
更新日期：1985-05-01 00:00:00
abstract：:We studied the effects of the androgenic hormone, androsterone sulfate, a 17-ketosteroid, on long term potentiation in the dentate gyrus (DG) of urethane anesthesized rats. Intravenous injection of 10 mg of the hormone dissolved in Nutralipid produced a significant increase of the population spike (PS), but not of the...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(00)00354-1
更新日期：2000-12-01 00:00:00
abstract：:Rabbit pups raised by mothers fed different diets during pregnancy and lactation show a clear preference for the diet of their mother at weaning. By supplementing does' lab chow diet with aromatic juniper berries, the present study aimed to investigate the relative importance of 1) fecal pellets deposited by the mothe...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)90322-0
更新日期：1994-11-01 00:00:00
abstract：:The pancreatic B-cell hormone amylin has been proposed to be both a satiation signal and an adiposity signal. The effects of peripheral amylin on energy balance are well investigated, but the effects of central amylin are less clear. We determined the effects of low doses of amylin administered into the 3rd cerebral v...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2010.04.012
更新日期：2010-08-04 00:00:00
abstract：:Learning and memory seem to be affected by chronic stress. Previous reports have considered chronic stress as a precipitating factor of different neuropsychological disorders, while others reported neurobiological adaptations following stress. The present study investigated the effects of chronic stress before, after,...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2014.12.004
更新日期：2015-02-01 00:00:00
abstract：:Explicit cues associated with food consumption when hunger prevails will enhance eating when they are subsequently presented under conditions of satiety. Here we examined whether contextual conditioned stimuli (CSs) paired with consumption of food pellets while rats were food-deprived would enhance consumption of this...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2006.09.031
更新日期：2007-02-28 00:00:00
abstract：:A possible role of endogenous opioids in male copulatory behavior was examined in six experiments which studied the effects of opiate antagonists on the copulatory behavior of male hamsters (Mesocricetus auratus). In Experiment 1, the acute administration of naloxone hydrochloride (4 mg/kg, SC) ten minutes before test...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90048-x
更新日期：1986-01-01 00:00:00
abstract：:Whether spontaneous food intake (SFI) is controlled by infused nutrient type or its caloric content, irrespective of nutrient type, was investigated. Rats were infused for 4 days with isocaloric solutions of different nutrient type but sharing the same intermediary metabolic oxidative pathway, providing 25% of daily c...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)00028-h
更新日期：1995-07-01 00:00:00
abstract：:Rats were instrumented with arterial catheters and directional-pulsed Doppler flow probes for assessment of blood pressure, heart rate, and blood flow in the renal, mesenteric, and hindquarter vascular beds. Subjects were tested in an intermittent shock procedure under paired and isolated social conditions and the car...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90198-4
更新日期：1989-12-01 00:00:00
abstract：:Aggressive behavior is a major public health problem worldwide and has been associated with many gene variants, especially those related to the serotonin (5-hydroxytryptamine, 5-HT) system, and environmental factors. However, the overall contribution of serotonin-related genes to aggressive behavior is not well unders...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2014.09.005
更新日期：2015-01-01 00:00:00
abstract：:Previous studies have shown that adult male rats, in which brain estrogen formation was inhibited neonatally by SC administration of the aromatase inhibitor 1,4, 6-androstatriene-3,17-dione (ATD), show an altered sexual partner preference. When tested in a three-compartment box, such gonadally intact ATD males approac...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(96)80023-0
更新日期：1996-08-01 00:00:00
abstract：:Five experiments were conducted to determine the effect of hepatic and jugular infusions of amino acid and lipid solutions on short-term food intake of cockerels. Neither jugular nor hepatic infusions of amino acids had any effect on food intake of Single-Comb White Leghorn (SCWL) cockerels. Lipid infusions had no eff...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90327-6
更新日期：1986-01-01 00:00:00
