Overmarking by adult females in four equid species: social bonds and group cohesion

2018 ◽  
Vol 306 (3) ◽  
pp. 180-188 ◽  
Author(s):  
V. Tučková ◽  
R. Šárová ◽  
J. Bartošová ◽  
S. R. B. King ◽  
J. Pluháček
Keyword(s):  
Social Bonds ◽  
Group Cohesion ◽  
Adult Females

scholarly journals Non-reciprocal but peaceful fruit sharing in wild bonobos in Wamba

Behaviour ◽  
2015 ◽  
Vol 152 (3-4) ◽  
pp. 335-357 ◽  
Author(s):  
Shinya Yamamoto
Keyword(s):  
Driving Force ◽  
Social Bonds ◽  
Food Sharing ◽  
Evolution Of Cooperation ◽  
Reciprocal Exchange ◽  
Adult Females ◽  
Different Characteristics ◽  
Meat Sharing

Food sharing is considered to be a driving force in the evolution of cooperation in human societies. Previously postulated hypotheses for the mechanism and evolution of food sharing, e.g., reciprocity and sharing-under-pressure, were primarily proposed on the basis of meat sharing in chimpanzees. However, food sharing in bonobos has some remarkably different characteristics. Here I report details pertaining to fruit sharing in wild bonobos in Wamba based on 150 events of junglesop fruit sharing between independent individuals. The bonobos, primarily adult females, shared fruit that could be obtained individually without any cooperation or specialized skills. There was no evidence for reciprocal exchange, and their peaceful sharing seems to contradict the sharing-under-pressure explanation. Subordinate females begged for abundant fruit from dominants; this might indicate that they tested the dominants’ tolerance based on social bonds rather than simply begging for the food itself, suggesting existence of courtesy food sharing in bonobos.

Cultural humility: Pilot study testing the social bonds hypothesis in interethnic couples.

2018 ◽  
Vol 65 (4) ◽  
pp. 531-537 ◽  
Author(s):  
Stacey E. McElroy-Heltzel ◽  
Don E. Davis ◽  
Cirleen DeBlaere ◽  
Josh N. Hook ◽  
Michael Massengale ◽  
...  
Keyword(s):  
Pilot Study ◽  
Social Bonds ◽  
Cultural Humility ◽  
The Social

Group Cohesion Via Collaborative Story Building

2010 ◽  
Author(s):  
Letitia Travaglini ◽  
Christine Seaver ◽  
Tara Lynn ◽  
Tom Treadwell
Keyword(s):  
Group Cohesion ◽  
Story Building

Does Sharing Personal Reflections on Group Process Improve Group Cohesion?

2013 ◽  
Author(s):  
Sam Steen ◽  
Elaina A. Vasserman-Stokes ◽  
Rachel Vannatta
Keyword(s):  
Group Process ◽  
Group Cohesion ◽  
Personal Reflections

Group Cohesion Survey

2007 ◽  
Author(s):  
Barbara L. Andersen ◽  
Rebecca A. Shelby ◽  
Deanna M. Golden-Kreutz
Keyword(s):  
Group Cohesion

THE »EARLY-ANDROGEN« SYNDROME; ITS DEVELOPMENT AND THE RESPONSE TO HEMI-SPAYING

1964 ◽  
Vol 45 (1) ◽  
pp. 1-12 ◽  
Author(s):  
H. E. Swanson ◽  
J. J. van der Werff ten Bosch
Keyword(s):  
Sexual Maturity ◽  
Compensatory Growth ◽  
Testosterone Propionate ◽  
Single Injection ◽  
Weight Increase ◽  
Corpora Lutea ◽  
Transition Stage ◽  
Adult Females

ABSTRACT The »early-androgen« syndrome in the rat – i. e. anovulatory ovaries in adult females after a single injection of testosterone propionate (TP) within a week of birth – may not become apparent until some time after the attainment of sexual maturity. Large doses (50 or 100 μg) of TP were effective earlier than lower doses (5 or 10 μg). Rats which received 5 μg TP were ovulating at 10 weeks of age, mated but were infertile at 13 weeks of age, and were anovulatory at 21 weeks. In rats between 10 and 13 weeks old there was a marked fall in the number of corpora lutea in the ovaries of animals which had been given 5 μg TP. Hemi-spaying was followed by compensatory growth of the remaining ovary which consisted of corpora lutea in ovulating, and of follicles in anovulatory rats; little or no compensatory weight increase occurred in animals which seemed to be in the transition stage from the ovulatory to the anovulatory condition.

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