Encounter aggressive

Miczek, K.A. Thompson, ML. and Shuster, L. Analgesia following defeat in an aggressive encounter Development of tolerance and changes in opioid receptors. In Kelly, D.D., ed. Stress-Induced Analgesia. 467. New York Annals of the New York Academy of Sciences, 1986. pp. 14-29. 

Moore PA (2007) Agonistic behavior in freshwater crayfish the influence of intrinsic and extrinsic factors on aggressive encounters and dominance. In Duffy JE, Thiel M (eds) Evolutionary ecology of social and sexual systems crustaceans as model organisms. Oxford University Press, Oxford, pp 90-114... 

Seebacher F, Wilson RS (2007) Individual recognition in crayfish (Cherax dispar) the roles of strength and experience in deciding aggressive encounters. Biol Lett 3 471 174... 

Chap. 13) result in dominant and subordinate males that potentially respond differently to females (Johansson and Jones 2007). A male s age and size significantly affects its success in aggressive encounters and, potentially, in mate choice (Huntingford et al. 1995 Sneddon et al. 1997 Smallegange and van der Meer 2007). Exposure to pheromones, in turn, also affects male-male aggressive encounters (Sneddon et al. 2003 Fletcher and Hardege 2009). 

These experiments demonstrate that our method does elicit different responses to different stimulus animals, and thus does measure recognition of individuals with different significance to the subject. Further experiments support this conclusion. In these experiments we tested the reactions of males that had a series of aggressive encounters with one male, as described above, and a series of neutral encounters across a wire mesh with a second male. Males reactions depended on the stimulus male that they were tested with males were attracted to the familiar neutral stimulus male but avoided and showed fearful reactions to the familiar winner (Lai, 2003). Thus, males showed unique responses to other males depending on their past history with them (Lai, 2003). 

Pairs of tamarins were allowed aggressive encounters with either a strange male or female. Each encounter was followed by a choice test, offering scent marks from both the recent opponent and from a familiar donor of the same sex. The tamarins preferentially investigated and scent-marked material from the recent opponent, even when they were tested several days after the encounter (Epple, 1974). Urine samples from two individuals presented under the same conditions, however, were not distinguished from each other (Epple, 1978b). 

Intrasexual competition is also a very important factor influencing mating behavior insects have developed a series of strategies in competing for a potential mate and the necessary food resources. Young rove beetle males, Aleochara curtula, which are not sexually active yet, but need access to food sources avoid aggressive encounters and expulsion by mimicking the female sex pheromone 438). 

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