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 during gestation. Four different factors biased the sex ratio of postpartum-conceived litters. Postpartum condition, implantation in a single uterine horn, and very large litter size favored the birth of female pups. The presence of suckling pups during gestation, on the other hand, brought the sex ratio up to parity. Each factor operated at or before implantation, and apparently did so asymmetrically in the two horns of the uterus. Thus, a litter's sex ratio at birth, even a sex ratio of parity, can be the result of multiple mechanisms of bias, some working in opposition to each other. Theories of sex ratio biasing must incorporate multiple mechanisms rather than focusing on single mechanisms within a given species.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Bacon SJ,McClintock MKdoi
10.1016/0031-9384(94)90207-0subject
Has Abstractpub_date
1994-08-01 00:00:00pages
359-66issue
2eissn
0031-9384issn
1873-507Xpii
0031-9384(94)90207-0journal_volume
56pub_type
杂志文章abstract：:The palatability of food has been shown to influence the cephalic phase reflexes. To determine if food palatability affects the magnitude of cephalic phase insulin release (CPIR) in humans, normal-weight women were asked to list foods that they found palatable and unpalatable. Subjects then stayed overnight in the hos...
journal_title：Physiology & behavior
pub_type： 临床试验,杂志文章
doi：10.1016/s0031-9384(96)80033-3
更新日期：1996-08-01 00:00:00
abstract：:Although the involvement of two types of vasopressin (AVP) receptors, v1a and v1b, in neural regulation of social behavior is well documented in rodents, there is no report on combined actions of them in regulation of social behavior. In this study, we investigated behavioral differences between wild-type (WT) and v1a...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2018.09.016
更新日期：2018-12-01 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：:Three techniques were compared: automated recording (A) of 2 h of feeding activities conveyed to a computer by constantly connected electronic balances, videotaping (V) of a closeup of the head of a chick during a feed-pecking session analyzed by focal sampling at reduced speed (16 times slower), strength of pecking (...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(96)00535-5
更新日期：1997-06-01 00:00:00
abstract：:The influence of adrenalectomy (ADX) on the odor detection performance of male Long-Evans rats was assessed using high-precision olfactometry and a go/no-go operant signal detection task. Nonparametric signal detection measures of sensitivity and responsivity, as well as measures of S+ response latency, the number of ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(91)90362-r
更新日期：1991-06-01 00:00:00
abstract：:The renin-angiotensin system (RAS) is functional within adipose tissue and angiotensin II, the active component of RAS, has been implicated in adipose tissue hypertrophy and insulin resistance. In this study, captopril, an angiotensin converting enzyme (ACE) inhibitor that prevents angiotensin II formation, was used t...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2009.05.009
更新日期：2009-08-04 00:00:00
abstract：:Minimal hepatic encephalopathy (MHE), which represents the early stage of this condition, is not clinically apparent and is prevalent in up to 80% of patients. The poor outcomes of MHE encouraged us to identify more simple methods for early diagnosis of MHE. To this purpose, we evaluated the contemporary manifestation...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2017.01.033
更新日期：2017-05-01 00:00:00
abstract：:Behavior of rats in the water-lick conflict test was examined during stimulation, and after lesions of the lateral septal nucleus. Continuous low-current stimulation resulted in an anxiolytic effect, an increase in the number of licks, and hence in the number of shocks, during a signaled, punished period. This effect ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(93)90362-j
更新日期：1993-06-01 00:00:00
abstract：:The effect of norepinephrine (NE) injection into the medial preoptic area (MPOA) on plasma glucose was studied in freely moving male rats. The rats were implanted with chronic jugular catheters for blood sampling and with unilateral intracerebral cannulas placed just above the MPOA. Blood samples were taken immediatel...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(96)00362-9
更新日期：1997-02-01 00:00:00
abstract：:Glucagon-like peptide 2 (GLP-2), a member of Glucagon peptide family involved in regulating energy metabolism, can be produced and secreted by preproglucagonergic (PPG) neurons in the brain. GLP-2 reduces food intake but at which brain sites GLP-2 exerts its feeding-suppress effects are still unclear. In this study, w...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2020.113253
更新日期：2021-02-01 00:00:00
abstract：:Rats with medial frontal cortical lesions (MFC) and control animals with sham operations were tested on an ascending series of 8 DRL schedules of reinforcement ranging from 5 to 70 seconds. Rats with MFC lesions did not differ from the control group in performance when response rate, responses per reinforcement and ef...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90405-7
更新日期：1987-01-01 00:00:00
abstract：:Wistar rats were exposed to 24-h cycles of sinusoidal varying light intensity at various amplitudes (A) and mean intensity (I) levels. The cycle minimum was at least 0.1 lux. Food approaches and wheel running activity were continuously recorded. Entrainment was observed to light cycles with amplitudes as low as 2 lux....
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(91)90588-f
更新日期：1991-12-01 00:00:00
abstract：:The effect of a single exposure to foot shock stress on runway responding for food reinforcement was assessed in animals trained and tested with the same or changed reinforcement magnitude. Foot shock (30 1-s shocks, 1.0 mA) exerted no impact on runway responding in animals trained and tested with the same level of re...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(99)00129-8
更新日期：1999-11-01 00:00:00
abstract：:Challenging animals with a demanding situation they are able to cope with and where they are rewarded may be a source of positive emotions and possibly of increased welfare. In order to test if this results in changes of immunological parameters and wound healing, 56 pigs (7-20 weeks of age), housed in groups of 8 ani...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2006.07.001
更新日期：2006-10-30 00:00:00
abstract：BACKGROUND:Defensive coping (DefS) was associated with a vulnerable cardiovascular profile in blacks. The copeptin/vasopressin system is a manifestation of hypothalamic-pituitary-adrenal-axis activity and may act as an acute compensatory mechanism when there is a disruption in volume-loading homeostasis, i.e. when card...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2019.05.012
更新日期：2019-08-01 00:00:00
abstract：:Early overnutrition disrupts leptin sensitivity and the development of hypothalamic pathways involved in the regulation of metabolism and feeding behavior. While previous studies have largely focused on the development of neuronal projections, few studies have examined the impact of early nutrition on hypothalamic syn...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2019.04.002
更新日期：2019-07-01 00:00:00
abstract：:The reward comparison hypothesis suggests that drugs of abuse-induced conditioned saccharin suppression intake is due to the reward value of drugs of abuse that outweighs that of a saccharin solution dissociating from the aversive LiCl-induced conditioned taste aversion (CTA). Huang and Hsiao (2008) provided some conf...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.07.022
更新日期：2015-11-01 00:00:00
abstract：:Aspartame (APM; L-aspartyl-L-phenylalanine methyl ester) was investigated for its ability to alter brain amino acids and monoamines in overnight fasted rats allowed to consume commercial diets for 60 minutes. In addition, the effects of mealing on the changes in plasma and brain amino acids and brain monoamines induce...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90365-3
更新日期：1986-01-01 00:00:00
abstract：:Analyses of 4-8 Hz electrical activity (RSA) of the mid-ventral hippocampus, motor activity (M), and blood pressure were carried out during experiments in which three monkeys were operantly conditioned to slow heart rate (HR), to speed HR or during control, no feedback (FB) periods. The results showed that RSA activit...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(82)90047-6
更新日期：1982-04-01 00:00:00
abstract：:Using air-dilution olfactometry, we measured concentration-response functions for the odor detection of the homologous esters ethyl, butyl, hexyl, and octyl acetate. Stimuli were delivered by means of an 8-station vapor delivery device (VDD-8) specifically designed to capture odor detection performance by humans under...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2008.09.021
更新日期：2008-12-15 00:00:00
abstract：:In a nutrient self-selection study, CAST/EiJ mice consumed more carbohydrate than fat while C57BL/6J (B6) mice showed the opposite preference. The present study revealed similar strain differences in preferences for isocaloric fat (Intralipid) and carbohydrate (sucrose, maltodextrin) solutions in chow-fed mice. In ini...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2018.06.018
更新日期：2018-10-01 00:00:00
abstract：:Play behavior of blinded and sighted juvenile rats was measured using the brief paired-encounter procedure. Dyads of sighted-sighted, blind-blind, or sighted-blind rats were observed in a large or small chamber on alternate days for ages 28 through 43 days. Blinded rats played as frequently as sighted rats regardless ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90003-x
更新日期：1986-01-01 00:00:00
abstract：:Predation of manila clams (Ruditapes philippinarum) by swimming crabs (Portunus trituberculatus) and Japanese stone crabs (Charybdis japonica) was compared in the laboratory under different starvation regimes by a video recording analysis system, and the mechanism of foraging behavior differences between them combined...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.07.011
更新日期：2015-11-01 00:00:00
abstract：:Mast cells are a type of immune cell widely distributed in the body of vertebrates. Mast cells have many granules that contain several bioactive molecules such as histamine, and these molecules are released through degranulation when the mast cell receives certain stimuli. Because the number of mast cells increases du...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2019.112681
更新日期：2019-11-01 00:00:00
abstract：:Earlier research has demonstrated that opioid involvement in drinking is primarily mediated centrally [8,10]. Drinking is attenuated by the centrally and peripherally active opioid antagonists naloxone and naltrexone in doses as low as 1.0 mg/kg, but not by the quaternary forms of these antagonists [4]. Peripherally a...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90099-0
更新日期：1987-01-01 00:00:00
abstract：:Medial prefrontal cortex (mPFC), a forebrain structure, is involved in many brain functions such as learning and memory. In the present study, the effect of intra-mPFC microinjection of oxytocin, atosiban, morphine and naloxone was investigated on memory processing. Two guide cannulas were implanted into the right and...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2019.112599
更新日期：2019-10-01 00:00:00
abstract：:Sleep, waking, and EEG power spectra were investigated in rats with spinal 5,6-dihydroxytryptamine (5,6-DHT) lesions, following 20 mg/kg zimeldine or vehicle IP injections. 5,6-DHT selectively lesioned the descending serotonergic pathways. Lesion alone did not change sleep and waking stages compared to baseline, excep...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)00370-k
更新日期：1995-05-01 00:00:00
abstract：:The development of liking for flavours through conditioning has so far been widely demonstrated in the laboratory. The impact of conditioning in the real world however is yet to be reported. This study investigated the development of liking for flavours through conditioning in the real world as part of everyday life. ...
journal_title：Physiology & behavior
pub_type： 临床试验,杂志文章
doi：10.1016/j.physbeh.2005.11.017
更新日期：2006-03-30 00:00:00
abstract：:Sexual conflict may be manifested during social interactions, shaping the costs of reproduction in sexually reproducing species. This conflict, and the physical necessity of intromission, can intensify the already costly nature of reproduction for female mammals. To identify and partition the costs that males inflict ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2019.112678
更新日期：2019-11-01 00:00:00
abstract：:Taste sensitivity and responsivity, two-tastant and taste-mixture discrimination performance, and taste preferences were examined prior to and after the selective desalivation of 48 male Long-Evans rats. Altered preference behavior was observed in rats after removal of the major salivary glands, as well as after remov...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(90)90200-n
更新日期：1990-11-01 00:00:00
