Male care in a free-ranging group of Japanese macaques (Macaca fuscata)

Primates ◽  
2021 ◽  
Author(s):  
Masayuki Nakamichi ◽  
Masataka Ueno ◽  
Kazunori Yamada
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Male Care ◽  
Free Ranging

scholarly journals Multimodal Advertisement of Pregnancy in Free-Ranging Female Japanese Macaques (Macaca fuscata)

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0135127 ◽  
Author(s):  
Lucie Rigaill ◽  
Andrew J. J. MacIntosh ◽  
James P. Higham ◽  
Sandra Winters ◽  
Keiko Shimizu ◽  
...  
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Female Japanese Macaques ◽  
Free Ranging

scholarly journals Variation in intergroup encounters among two provisioned free-ranging populations of Japanese macaques Macaca fuscata

2012 ◽  
Vol 58 (4) ◽  
pp. 517-524 ◽  
Author(s):  
Peng Zhang ◽  
Kunio Watanabe
Keyword(s):  
Social Factors ◽  
Intergroup Relations ◽  
Macaca Fuscata ◽  
Japanese Macaque ◽  
Japanese Macaques ◽  
Intergroup Relationships ◽  
Specific Variation ◽  
Intergroup Encounters ◽  
Free Ranging

Abstract Typically, Japanese macaques are thought to avoid encountering other groups wherever possible. Intergroup relations between macaques on Shodoshima Island, however, appear exceptional. We show that neighboring groups of Shodoshima monkeys spent 32.8% of their active time in proximity to (<100 m) and even foraged simultaneously at the same provisioning site with another group. The average duration and rate of intergroup encounters at Shodoshima (59.8 min, 0.33 times/hour, n=269) were approximately ten times longer and 16.5 times more frequent than those at Jigokudani (6.1 min, 0.02 times/hour, n=14). Since both populations have similar provisioning and ecological conditions, such variation cannot be explained by the socioecology model alone. Compared with other populations of Japanese macaques, intergroup relations of Shodoshima monkeys are also characterized by more frequent neutral encounters, less frequent agonistic encounters, more frequent unsuccessful displacement, a lower intensity of aggression, and more frequent counter-aggression between groups. These characteristics suggest that intergroup relationships on Shodoshima Island are more tolerant than those in other Japanese macaque populations. This study reveals considerable differences in intergroup encounters within local populations of Japanese macaques living in similar environments, and emphasizes the role of social factors in such intra-specific variation.

scholarly journals Social grooming efficiency and techniques are influenced by manual impairment in free-ranging Japanese macaques (Macaca fuscata)

PLoS ONE ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. e0228978
Author(s):  
Jenny Paola Espitia-Contreras ◽  
Linda M. Fedigan ◽  
Sarah E. Turner
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Social Grooming ◽  
Free Ranging

Development of sexual and socio-sexual behaviours in free-ranging juvenile male Japanese macaques, Macaca fuscata

Behaviour ◽  
2013 ◽  
Vol 150 (11) ◽  
pp. 1225-1254 ◽  
Author(s):  
Noëlle Gunst ◽  
Jean-Baptiste Leca ◽  
Paul L. Vasey
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Partner Choice ◽  
Adult Males ◽  
Cross Sectional ◽  
Sexual Behaviours ◽  
Behavioural Patterns ◽  
Juvenile Males ◽  
Free Ranging

The emergence of conceptive and non-conceptive sexual behaviours in mature individuals can be traced back to immature socio-sexual behavioural patterns. We tested the ‘needing-to-learn hypothesis’ in the development of sexual behaviours in the immature male Japanese macaques of Arashiyama, Japan. This hypothesis holds that juvenility serves to provide young individuals with a period in which to practice adult male-like sexual and socio-sexual behaviours and partner choice. Our cross-sectional focal data on mounting behaviour and partner choice in juvenile males (1–3 years) supported most of our predictions: (1) as they became older and learnt more effective patterns of sexual solicitations, juvenile males performed more demonstrative solicitations and less non-demonstrative solicitations, (2) the frequency of mounts performed by juvenile males increased with age and converged on a frequency of mounts typical of adult males, (3) the frequency of mounts reflecting underachievement (i.e., improperly oriented mounts and single/no foot-clasp mounts) decreased as juvenile males became older, (4) the double foot-clasp mounting posture became gradually more common in juvenile males over time, while other mounting postures became less common and (5) from two to three years old, the frequency of males’ sexual mounts directed to adult females increased. Such timelines of gradual increase in the frequency of effective adult-like behavioural patterns and gradual decrease in the frequency of less effective immature behavioural patterns are consistent with the ‘needing-to-learn hypothesis’ emphasizing the role of age and practice in the progressive acquisition of adult-like sexual behaviour, mounting skills, and partner age choice during male juvenility.

Flexibility and context-sensitivity during the vocal exchange of coo calls in wild Japanese macaques (Macaca fuscata yakui)

Behaviour ◽  
2004 ◽  
Vol 141 (10) ◽  
pp. 1279-1296 ◽  
Author(s):  
Hiroki Koda
Keyword(s):  
Macaca Fuscata ◽  
Short Interval ◽  
Japanese Macaques ◽  
Acoustic Properties ◽  
Vocal Response ◽  
Macaca Fuscata Yakui ◽  
Context Sensitive ◽  
Preceding Context ◽  
Group Members ◽  
Free Ranging

AbstractThis study investigated the extent to which vocal production in wild Japanese macaques, Macaca fuscata yakui, is flexible. Japanese macaques frequently exchange coo calls with other group members to maintain auditory contact. When a coo call is emitted but no other members respond within a short interval, the same monkey often emits another call repeatedly. This study focused on these two successive coo call sequences. First, the sequences of eleven females in a free-ranging group were recorded and analyzed. Comparisons of the acoustic properties between the initial and repeated coo calls revealed that the repeated call was higher in fundamental frequency and longer in duration than the initial call. Next, playback experiments were conducted to examine the efficiency of the exaggerated acoustic features of these repeated coo calls. Eight pairs of initial and repeated coo calls were prepared from eight female monkeys as the playback stimuli, and played back to the eight subject females. Comparisons of subject responses to the initial and repeated coo call stimuli revealed that the repeated call stimuli elicited more frequent vocal responses. These field observation and playback results suggest that monkeys might be able to modify the acoustic properties of vocalizations according to the preceding context so as to elicit a more effective vocal response from other group members. The pattern of vocal interactions among wild Japanese macaques is therefore likely to be flexible and to some extent context-sensitive.

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