www.ijcrt.org © 2020 IJCRT | Volume 8, Issue 10 October 2020 | ISSN: 2320-2882 IJCRT2010210 International Journal of Creative Research Thoughts (IJCRT) www.ijcrt.org 1590 Social rejection and AMB formation in Semnopithecus entellus in and around Jodhpur Raj. (India) Arjun Singh 1* , Hemant Kumawat 1 , Goutam Sharma 1 and L.S. Rajpurohit 2 Research Scholar, Animal Behaviour Unit, Department of Zoology, J.N.V. U., Jodhpur, Rajasthan, India 1 Former HOD, Department of Zoology, J.N.V. University, Jodhpur, Rajasthan, India 2 Abstract: Present finding in Hanuman langur supports Social rejection behaviour. Observation suggests that the entellus Juveniles male, social refusal from Unimale bisexual troop. After gain certain age mother is careless for juveniles and residential male aggressive against Juveniles. So those force regulate the social rejection and All Male Band formation in entellus. Field observation on emotional behaviour suggest that the, Focal troop B-01 total, three individuals leave a natal troop, In troop B-04a total two individuals and In troop B-06 total of nine individuals (juvenile and sub-adult) leave a natal troop during 2017-18. Out of 9 (total individuals), six is juvenile, and three is sub- adults leave the natal troop during 2017-18. Keywords: Hanuman langur, Social rejection, troop, AMB, Bisexual troops I. INTRODUCTION Social rejection happened when an individual is purposefully omitted from a social relationship or social interaction. Rejection includes interpersonal rejection, familial rejection. An individual can be rejected by a person or an entire group of people. Furthermore, rejection can be either active (remove by force, fight and by the help of aggressiveness), passive (ignoring an individual). The Hanuman langur (Semnopithecus entellus) is the best studied and most adaptable south Asian Colobine. (Roonwal and Mohnot, 1977). The species has a greatly adaptable social organization. The two basic types of common units are Unimale bisexual troops and AMB. The Polygyny troops are matrilineal group of adult females and offspring with either one adult male or more than one adult males. The unimale bisexual troops are major around Jodhpur where as well temporary multimale situation during Adult male invasion, most of social units are one -male bisexual troops (polygyny) or harems (Mohnot, 1974; Rajpurohit, 1987; Sommer and Rajpurohit, 1989, Rajpurohit et al., 2006). II. MATERIAL AND METHODS The study was carried out near Daijar and Beriganga site near Jodhpur city. In Jodhpur, langur live within the radius within100km. 2017-2018 demographic data show that the number of Jodhpur langur crossed 2861individuals composed in 54 groups of Unimale Bisexual troop and AMB (Singh and Rajpurohit, 2020). Data for Social rejection and AMB formation collected through at libitum and scan sampling (Altman, 1974). Mainly focal animal sampling as well as scan sampling techniques use for field observation. Different individuals identify through scar mark, fur colour, natural mark etc. All observation done during day time as well as in natural situation. III. OBSERVATION AND RESULTS 3.1 Social rejection 3.1.1 Bisexual troops as sources of AMB Formation In langur mainly two types of social units are a present uni-male bisexual troop and all male band. Uni-male bisexual troop where alpha male and other female are presents in the troop. AMB where all male of different age categories is present. After gain, a juvenile (♂) stage males emigrate from their natal troop and join AMB.