scholarly journals Play fighting in androgen-insensitivetfm rats: Evidence that androgen receptors are necessary for the development of adult playful attack and defense

2006 ◽  
Vol 48 (2) ◽  
pp. 111-120 ◽  
Author(s):  
Evelyn F. Field ◽  
Ian Q. Whishaw ◽  
Sergio M. Pellis ◽  
Neil V. Watson
Keyword(s):  
Androgen Receptors ◽  
Play Fighting ◽  
Attack And Defense

scholarly journals Targets, Tactics, and Cooperation in the Play Fighting of Two Genera of Old World Monkeys (Mandrillus and Papio):Accounting for Similarities and Differences

2019 ◽  
Vol 32 ◽  
Author(s):  
Kelly L. Kraus ◽  
Vivien C. Pellis ◽  
Sergio M. Pellis
Keyword(s):  
Related Species ◽  
Species Differences ◽  
The Body ◽  
Old World Monkeys ◽  
Closely Related Species ◽  
Old World ◽  
Competition And Cooperation ◽  
Play Fighting ◽  
Attack And Defense ◽  
Bodily Contact

Play fighting in many species involves partners competing to bite one another while avoiding being bitten. Species can differ in the body targets that are bitten and the tactics used to attack and defend those targets. However, even closely related species that attack and defend the same body target using the same tactics can differ markedly in how much the competitiveness of such interactions is mitigated by cooperation. A degree of cooperation is necessary to ensure that some turn-taking between the roles of attacker and defender occurs, as this is critical in preventing play fighting from escalating into serious fighting. In the present study, the dyadic play fighting of captive troops of 4 closely related species of Old World monkeys, 2 each from 2 genera of Papio and Mandrillus, was analyzed. All 4 species have a comparable social organization, are large bodied with considerable sexual dimorphism, and are mostly terrestrial. In all species, the target of biting is the same – the area encompassing the upper arm, shoulder, and side of the neck – and they have the same tactics of attack and defense. However, the Papio species exhibit more cooperation in their play than do the Mandrillus species, with the former using tactics that make biting easier to attain and that facilitate close bodily contact. It is possible that species differences in how rigidly dominance relationships are maintained are expressed in the play of juveniles by altering the balance between competition and cooperation.

scholarly journals The Development of Juvenile-Typical Patterns of Play Fighting in Juvenile Rats Does Not Depend on Peer-Peer Play Experience in the Peri-Weaning Period

2015 ◽  
Vol 28 ◽  
Author(s):  
B. T. Himmler ◽  
S. M. Himmler ◽  
R. Stryjek ◽  
K. Modlińska ◽  
W. Pisula ◽  
...  
Keyword(s):  
Female Rats ◽  
Male Rats ◽  
Same Sex ◽  
Typical Pattern ◽  
Peer Play ◽  
Play Fighting ◽  
Male And Female Rats ◽  
Different Strains ◽  
Attack And Defense ◽  
Play Experience

Play fighting in rats involves attack and defense of the nape. To protect the nape, rats use a variety of defensive tactics, with different strains having specific preferences. Targeting of the nape is established before weaning and defense matures over the course of the week preceding and the week proceeding weaning. Thus, it is possible that experience from engaging in immature forms of play is needed to consolidate the nape as the playful target and for the development of the juvenile-typical pattern of defense. Two experiments were conducted to evaluate this possibility. For the first experiment, male rats were reared over the week post-weaning in either pairs or alone, and their play tested with unfamiliar partners when juveniles (31-34 days). For the second experiment, during the week preceding weaning, male and female rats were placed into one of three conditions: (1) with the mother and no peers, (2) with same-sex siblings but no mother or (3) with both the mother and same-sex siblings. The subjects were tested in same-sex, same-condition pairs when juveniles (31-34 days). Rats from all conditions, in both experiments, attacked the nape during play fighting and developed the same juvenile-typical patterns of playful defense. This suggests that the experience of peer-peer play in the peri-weaning period is not necessary for the development of the attack and defense components of juvenile-typical play.

267: Effects of Steroidal and Non-Steroidal Antiandrogens on Wild-Type and Mutant Androgen Receptors

2007 ◽  
Vol 177 (4S) ◽  
pp. 89-90
Author(s):  
Masayasu Urushibara ◽  
Yukio Kageyama ◽  
Junichiro Ishioka ◽  
Yotsuo Higashi ◽  
Shuntaro Hara ◽  
...  
Keyword(s):  
Androgen Receptors ◽  
Wild Type

A new look at play fighting.

2018 ◽  
Vol 132 (1) ◽  
pp. 4-5
Author(s):  
Dorothy Munkenbeck Fragaszy
Keyword(s):  
Play Fighting ◽  
New Look
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