Age-dependent patterns of intensive observation on elders by free-ranging juvenile Japanese macaques (Macaca fuscata yakui) within foraging context on Yakushima

2008 ◽  
Vol 70 (12) ◽  
pp. 1103-1113 ◽  
Author(s):  
Laurent Tarnaud ◽  
Juichui Yamagiwa
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Macaca Fuscata Yakui ◽  
Age Dependent ◽  
Intensive Observation ◽  
Free Ranging

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.

Sound transmission in the habitats of Japanese macaques and its possible effect on population differences in coo calls

Behaviour ◽  
2006 ◽  
Vol 143 (8) ◽  
pp. 993-1012 ◽  
Author(s):  
Toshiaki Tanaka ◽  
Hideki Sugiura ◽  
Nobuo Masataka
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Population Difference ◽  
Population Differences ◽  
Macaca Fuscata Yakui ◽  
Acoustic Features ◽  
Pure Tones ◽  
Habitat Acoustics ◽  
Acoustic Environments ◽  
Two Populations

AbstractRecently, the acoustic features of coo calls were reported to differ between two populations of Japanese macaques (Macaca fuscata yakui), namely the Ohirayama and Yakushima populations. We hypothesized that this difference may arise through differences in the acoustic environments of the two habitats, and measured the degrees of transmission of pure tones (250-8000 Hz) and the coo calls of the two populations in each habitat. In the Ohirayama habitat, lower frequencies were transmitted more efficiently, and the low-pitched coo calls of the Ohirayama population showed significantly better transmission than the high-pitched calls of the Yakushima population. In the Yakushima habitat, the degrees of transmission of the calls of the two populations did not differ significantly. Therefore, the calls of the Ohirayama population possess acoustic features that allow better transmission in their own habitat, suggesting that the habitat acoustics may be a factor contributing to the population difference between the calls.

Urological Screening of a Wild Group of Japanese Macaques (Macaca fuscata yakui): Investigating Trends in Nutrition and Health

2012 ◽  
Vol 33 (2) ◽  
pp. 460-478 ◽  
Author(s):  
Andrew J. J. MacIntosh ◽  
Michael A. Huffman ◽  
Koki Nishiwaki ◽  
Takako Miyabe-Nishiwaki
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Macaca Fuscata Yakui ◽  
Nutrition And Health ◽  
Wild Group

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
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