Abstract：
:We investigated whether juveniles of the nocturnal fish jundiá (Rhamdia quelen) and the diurnal fish Nile tilapia (Oreochromis niloticus) are able to chemically communicate stress to conspecifics. Groups of 8 fish were reared in tanks under recirculated water (water exchanged among all the tanks) for each species. Fish were handled in half of the tanks (stressor fish) and whole-body cortisol concentrations were compared among handled fish, non-handled fish exposed to water from the handled fish, and non-handled control fish held with no water communication. For each treatment cortisol concentrations were determined before exposure to the stressor (basal levels) and after 1, 2, 4, 8, and 24h. Basal levels of cortisol confirmed fish were unstressed in the beginning of the experiment. Cortisol was increased in the stressor fish 1h after handling. Fish receiving water from the stressor fish increased cortisol levels later (2h after the stressor fish were handled). As the isolated control group maintained cortisol levels unchanged throughout the experiment, we concluded that some chemical factor was released by the stressed fish in the water and thus stressed the conspecifics. This pattern was similar for both unrelated species, thus suggesting that this communication might have evolved earlier in fish and reinforcing the biological value of this kind of information.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Barcellos LJ,Volpato GL,Barreto RE,Coldebella I,Ferreira Ddoi
10.1016/j.physbeh.2011.03.009subject
Has Abstractpub_date
2011-06-01 00:00:00pages
372-5issue
3-4eissn
0031-9384issn
1873-507Xpii
S0031-9384(11)00126-0journal_volume
103pub_type
杂志文章abstract：:Intermale aggression is a natural form of psychosocial stress that can alter a variety of physiological functions, including immune function. In Experiment 1, daily fighting between pairs of previously isolated male mice differentially altered immunological measures of T-cell responsiveness in dominant and submissive ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(90)90378-h
更新日期：1990-06-01 00:00:00
abstract：:Schisantherin A (STA) is a main bioactive lignan isolated from Schisandra chinensis (Turcz.) Baill., which has been widely used as a tonic in traditional Chinese medicine for many years. Lots of studies have reported that STA exhibited anti-inflammatory and antioxidant effects. This paper was designed to investigate t...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2014.04.046
更新日期：2014-06-10 00:00:00
abstract：:Chronic exposure to a diet rich in fats changes the gastrointestinal milieu and alters responses to several signals involved in the control of food intake. Oleoylethanolamide (OEA) is a gut-derived satiety signal released from enterocytes upon the ingestion of dietary fats. The anorexigenic effect of OEA, which requir...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2014.04.039
更新日期：2014-09-01 00:00:00
abstract：:This study evaluated the utility of the compound nerve action potential (CAP) and spinal nociceptive withdrawal (R3) reflex in identifying and quantifying peripheral afferent activity evoked by sural nerve stimulation in humans. The results of this work demonstrate that currents less than or equal to that which elicit...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(93)90374-o
更新日期：1993-06-01 00:00:00
abstract：:A causal relationship between declining nocturnal core temperature, increasing peripheral temperature, and sleep onset has been reported. The exact trigger for these thermoregulatory changes around sleep onset, however, is unknown. Our aim was to examine one possible trigger: prior knowledge of bedtime. Fourteen young...
journal_title：Physiology & behavior
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.physbeh.2006.11.018
更新日期：2007-03-16 00:00:00
abstract：:Three groups of rats were normally reared by dams, artificially reared but not exposed to alcohol or artificially reared and exposed to 6.6 g/kg/day of ethanol condensed into 8 h of each 24-h period. Alcohol exposure was given from postnatal day 4 through 9 and artificial rearing was conducted from postnatal day 4 to ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(91)90314-e
更新日期：1991-04-01 00:00:00
abstract：:Sedentary, adult rats of both sexes fed Purina chow and a 32% sucrose solution overate, gained excess weight and had higher Lee Indexes of obesity than control animals fed only Purina chow. The magnitude of these effects was similar in the males and females. Animals of both sexes fed the sucrose diet showed a slower r...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(82)90012-9
更新日期：1982-08-01 00:00:00
abstract：:The need to obtain data from individual laboratory animals has forced many researchers to singly-house small animals. This is costly to the researcher and isolation can adversely affect animal physiology and behavior which in turn may threaten the validity and generalization of experiment results to humans. We assesse...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2008.04.025
更新日期：2008-09-03 00:00:00
abstract：:Our recent studies have shown that the difference in basal pain sensitivity to mechanical and thermal stimulation between Dark-Agouti (DA) rats and a novel congenic DA.1U rats is major histocompatibility complex (MHC) genes dependent. In the present study, we further used DA and DA.1U rats to investigate the role of M...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.04.009
更新日期：2015-08-01 00:00:00
abstract：:We have monitored parturition and different behavioral rhythms of does, the activity of suckling pups and behavioral rhythms of rabbits after weaning until adulthood. All animals were living in continuous light conditions (LL). As a consequence of the free-run of the does parturition, which takes place during the rest...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)00006-5
更新日期：1995-07-01 00:00:00
abstract：:The effects of stress on risk assessment behavior in mice were studied by examining latency to emerge from a safe compartment into a large, well-lit open field. In the first experiment different groups of mice were exposed for 1 h to tube restraint, fixed interval 2-min foot shock, or attack by an aggressive conspecif...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)02140-x
更新日期：1996-04-01 00:00:00
abstract：:Artificial stimuli were used to study transient changes in responsiveness of female hamsters in natural estrus to tactile stimuli occurring during mating. Tactile stimulation just lateral to the vagina produces a transient facilitation of responses to stimulation of the contralateral side, while tactile stimulation of...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(88)90157-6
更新日期：1988-01-01 00:00:00
abstract：:Lactic acid in arterial blood, systolic and diastolic blood pressures, and heart rates of baboons were examined for three naive subjects, and for five experimental subjects during baseline conditions and during training to elevate diastolic blood pressure through operant conditioning methodology. Lactic acid and cardi...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(82)90235-9
更新日期：1982-10-01 00:00:00
abstract：:Multiple theta cells in the dentate granule cell area of the hippocampal formation of the freely moving rabbit were analyzed during three behavioral conditions: (1) voluntary motor patterns, termed Type 1 theta behaviors; (2) automatic motor patterns, termed Type 2 LIA behaviors; (3) alert immobility with presentation...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(83)90104-x
更新日期：1983-07-01 00:00:00
abstract：:When Norway rat litters are nursed communally, postpartum-conceived litters born asynchronously are female biased at birth. To determine if one or more mechanisms produced this sex ratio bias, we studied litters conceived at a postpartum estrus, and systematically varied the presence or absence of a litter suckling du...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)90207-0
更新日期：1994-08-01 00:00:00
abstract：:The possibility of socially stressing the dominant/aggressive member of a pair of male mice is tested. Male mice (NMRI outbreed strain) were housed in pairs to assess dominant and subordinate roles by agonistic interactions and urine-marking test. Social stress for dominant males consisted in 30 min/day of exposure to...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(01)00460-7
更新日期：2001-06-01 00:00:00
abstract：:To study some metabolic features during feeding in food-restricted rats two groups of animals were maintained on a 2 hr feeding/22 hr fast schedule. Group D (n = 38) received a meal every day from 8:00 to 10:00 a.m. Group N (n = 34) was given the meal from 8:00 to 10:00 p.m. The average total amount of food ingested b...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(85)90399-3
更新日期：1985-11-01 00:00:00
abstract：:Animal shelters are an extremely stressful environment for a dog, most specifically due to social isolation and novel surroundings. The stress response of dogs housed in this environment may be alleviated through human interaction shortly after arrival. During their second day in a public animal shelter, adult stray d...
journal_title：Physiology & behavior
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.physbeh.2005.12.001
更新日期：2006-03-30 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：:Bariatric surgery is an effective treatment for obesity that involves both peripheral and central mechanisms. To elucidate central pathways by which oral and visceral signals are influenced by high-fat diet (HFD) and Roux-en-Y gastric bypass (RYGB) surgery, we recorded from neurons in the caudal visceral nucleus of th...
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
abstract：:Insulin was chronically administered to rats to determine its effect on the daily changes in food intake and body weight. Animals received regular insulin via 14-day osmotic minipumps in doses of 0.0, 0.5, 1.0, 3.0, and 5.0 IU/day treated either with (+GLU) or without glutamic acid (-GLU). Previous studies have shown ...
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：:Increasing doses of naltrexone (25 to 200 mg) given over 4 consecutive days reduced intake of laboratory luncheon meals by 30% in 17 obese men. Meal size remained suppressed in the laboratory during the week following naltrexone administration. Water intake in the laboratory and body weight were not affected. Rates of...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90198-3
更新日期：1987-01-01 00:00:00
abstract：:Motor activity of infant rat pups was measured continuously between days 3 and 18 of postnatal age. Mother-reared rats on a 12:12 LD cycle exhibited significant rhythmic activity in the circadian range as early as day 5 of postnatal age. Some of the pups reared in isolation from maternal and sibling contact and kept o...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90006-0
更新日期：1987-01-01 00:00:00
abstract：:Sex differences exist in the regulation of energy homeostasis in response to calorie scarcity or excess. Brain-derived neurotrophic factor (BDNF) is one of the anorexigenic neuropeptides regulating energy homeostasis. Expression of Bdnf mRNA in the ventromedial nucleus of the hypothalamus (VMH) is closely associated w...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2014.03.028
更新日期：2014-05-10 00:00:00
abstract：:The sense of taste uses a variety of discrete receptor mechanisms to identify nutrients and toxins. Information from receptors is arrayed along a dimension of physiological welfare, which serves as the organizing principle of the taste system. This, in turn, drives central physiological and neurochemical processes tha...
journal_title：Physiology & behavior
pub_type： 杂志文章,评审
doi：10.1016/j.physbeh.2011.04.016
更新日期：2011-07-25 00:00:00
abstract：:Appetite for most protein appears to be unlearned. Protein-depleted rats, in the first half hour of a test, chose a significantly larger proportion of soybean, gluten, zein, fibrin, yeast torula and ovalbumin than protein replete controls, but not of casein or lactalbumin. There had been no opportunity to learn such d...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90341-7
更新日期：1989-10-01 00:00:00
abstract：:Motivational audiovisual stimuli such as music and video have been widely used in the realm of exercise and sport as a means by which to increase situational motivation and enhance performance. The present study addressed the mechanisms that underlie the effects of motivational stimuli on psychophysiological responses...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2016.03.001
更新日期：2016-05-01 00:00:00
abstract：:In the present study, we tested the spatial learning behavior of four different mouse strains (129/Sv, BALB/c, C57BL and Swiss) in a newly developed circular maze. The maze was based on the circular Barnes maze, which was initially developed for rats. Since mice do not readily enter holes in floor, additional reinforc...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(03)00171-9
更新日期：2003-09-01 00:00:00
abstract：:We have investigated the effects of peripherally administered pyruvate and lactate on the intake of high fat (HF) and low fat (LF) diets by a strain of rat either sensitive (Osborne-Mendel, OM) or resistant (SSB/Pl) to high fat-induced obesity. Both pyruvate and lactate inhibited the intake of HF and LF diets by OM ra...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)02109-4
更新日期：1996-03-01 00:00:00
abstract：:In earlier work, we found that following lipopolysaccharide (LPS) injection at an ambient temperature (Ta) of 23 degrees C, old rats developed blunted fevers compared with those of young rats. However, the old rats did become febrile if placed in a thermally graded alleyway: they spent more time in the warm end of the...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(03)00046-5
更新日期：2003-04-01 00:00:00
