Physiological responses to social status and housing conditions in male mice subject to food competition tests

1993 ◽  
Vol 60 (3) ◽  
pp. 293-296 ◽  
Author(s):  
Ludek Bartoš ◽  
Paul Fredric Brain
1985 ◽  
Vol 11 (3) ◽  
pp. 317-321
Author(s):  
P.P. Vescovi ◽  
G. Valenti ◽  
M. Mainardi ◽  
L. Brocchieri ◽  
P.F. Brain

Urban History ◽  
2012 ◽  
Vol 40 (1) ◽  
pp. 51-70 ◽  
Author(s):  
ANNA MAZANIK

ABSTRACT:This article examines the social topography and the housing patterns of Moscow workers in the context of their social status and experience of immigration. It argues that in the early twentieth century Moscow was characterized by extremely poor housing conditions and the absence of clear residential segregation of social classes due to the lack of profound planning policy and urban reforms.


2017 ◽  
Vol 284 (1863) ◽  
pp. 20171570 ◽  
Author(s):  
Won Lee ◽  
Amber Khan ◽  
James P. Curley

We have previously shown that male mice living in groups of 12 males establish and maintain stable linear social hierarchies with each individual having a defined social rank. However, it is not clear which social cues mice use to signal and recognize their relative social status within their hierarchy. In this study, we investigate how individual social status both in pairs and in groups affects the levels of major urinary proteins (MUPs) and specifically MUP20 in urine. We housed groups of adult outbred CD1 male mice in a complex social environment for three weeks and collected urine samples from all individuals repeatedly. We found that dominant males produce more MUPs than subordinates when housed in pairs and that the production of MUPs and MUP20 is significantly higher in alpha males compared with all other individuals in a social hierarchy. Furthermore, we found that hepatic mRNA expression of Mup3 and Mup20 is significantly higher in alpha males than in subordinate males. We also show that alpha males have lower urinary creatinine levels consistent with these males urinating more than others living in hierarchies. These differences emerged within one week of animals being housed together in social hierarchies. This study demonstrates that as males transition to become alpha males, they undergo physiological changes that contribute to communication of their social status that may have implications for the energetic demands of maintaining dominance.


1981 ◽  
Vol 91 (2) ◽  
pp. 263-269 ◽  
Author(s):  
D. J. NICHOLS ◽  
P. F. D. CHEVINS

Male urine applied daily to their bedding raised the basal levels of plasma corticosterone in individually housed, virgin female mice, when compared with females (grouped or individually housed) living with male mice or with group-housed females exposed daily to male urine. Values were not affected during ether-induced stress. A single application of male urine raised plasma levels 30 min later regardless of housing conditions; but after 4 and 24 h levels had fallen to normal. The results are discussed in terms of sensitization of the pituitary-adrenal system and of stress and reproductive pheromones. Male urine was less effective than male presence at inducing 4-day oestrous cycles. Length and type of cycle varied continuously under the influence of a spectrum of environmental signals.


2007 ◽  
Vol 210 (11) ◽  
pp. 2013-2024 ◽  
Author(s):  
L. M. Vaanholt ◽  
B. De Jong ◽  
T. Garland ◽  
S. Daan ◽  
G. H. Visser

2005 ◽  
Vol 164 (1) ◽  
pp. 100-106 ◽  
Author(s):  
Sabine Chourbaji ◽  
Christiane Zacher ◽  
Carles Sanchis-Segura ◽  
Rainer Spanagel ◽  
Peter Gass

2014 ◽  
Vol 97 (2) ◽  
pp. 464-469 ◽  
Author(s):  
L. Starvaggi Cucuzza ◽  
F. Riondato ◽  
E. Macchi ◽  
C. Bellino ◽  
G. Franco ◽  
...  

2000 ◽  
Vol 34 (2) ◽  
pp. 189-198 ◽  
Author(s):  
E. Kaliste-Korhonen ◽  
S. Eskola

Fighting is known to occur frequently in male mouse groups. In this study with outbred NIH/S mice, the possible impact of individual aggressiveness on fighting in groups and on the social status of animals was studied. Male mice were pre-tested in a resident-intruder (RI) test and rated as initially aggressive or non-aggressive according to their attack behaviour against an intruder. Thereafter they were randomly allocated to new social groups, with four mice per cage. Fighting in groups was increased when several initially aggressive animals were included in the group. Within the groups, animals were rated as dominants and subordinates according to their behaviour toward a strange intruder introduced into their home-cage (Group Intruder, GI) test and the occurrence of wounds. Additionally, subordinates were divided into aggressive and non-aggressive categories according to their behaviour in the second RI test, which was performed 3 weeks after grouping. The behaviour in the RI test prior to group-housing did not predict the individual social status or possibility of being wounded in the new social environment. On the other hand, the social relationships in the new group affected the behaviour in a subsequent RI test. All dominants showed aggressive behaviour during the second RI test. Those subordinates which behaved aggressively during this test received the most numerous and serious wounds, suggesting that in the new groups their interactions with the other group members were mostly aggressive. The reduced weight of epididymal adipose tissue in dominant and aggressive subordinates may indicate that they had fought continuously. Social status or levels of fighting in a group did not affect individual weight gain or the other physiological parameters measured. The wounded animals had enlarged spleens and reduced weights of epididymal adipose tissue, which were probably the results of increased activity of the immune system and reduced welfare, respectively. In conclusion, individual aggressiveness seems to be greatly affected by the demands of the social environment. Fighting in mouse groups leading to wounded animals may have effects on physiological research parameters.


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