scholarly journals Vocal repertoire of free-ranging adult golden snub-nosed monkeys (Rhinopithecus roxellana )

2018 ◽  
Vol 80 (6) ◽  
pp. e22869 ◽  
Author(s):  
Penglai Fan ◽  
Xuecong Liu ◽  
Ruoshuang Liu ◽  
Fang Li ◽  
Tianpeng Huang ◽  
...  
Keyword(s):  
Vocal Repertoire ◽  
Rhinopithecus Roxellana ◽  
Free Ranging

Male-Male Mounting Behaviour in Free-Ranging Golden Snub-Nosed Monkeys (Rhinopithecus roxellana)

2018 ◽  
Vol 89 (2) ◽  
pp. 150-156 ◽  
Author(s):  
Gu Fang ◽  
Alan F. Dixson ◽  
Xiao-Guang Qi ◽  
Bao-Guo Li
Keyword(s):  
Rhinopithecus Roxellana ◽  
Free Ranging

scholarly journals Free-ranging Sichuan snub-nosed monkeys Rhinopithecus roxellana: Neophobia, neophilia, or both?

2013 ◽  
Vol 59 (3) ◽  
pp. 311-316 ◽  
Author(s):  
Weiwei Fu ◽  
Dapeng Zhao ◽  
Xiaoguang Qi ◽  
Songtao Guo ◽  
Wei Wei ◽  
...  
Keyword(s):  
World Monkey ◽  
The Novel ◽  
Rhinopithecus Roxellana ◽  
Old World ◽  
Novel Object ◽  
Old World Monkey ◽  
Free Ranging ◽  
Age And Sex

Abstract We studied the responsiveness of the Sichuan snub-nosed monkey Rhinopithecus roxellana, an arboreal Old World monkey, to the presence of novel stimuli associated with familiar food. We also determined differences in responses by age and sex. Results showed that monkeys exhibited neophilia and neophobia simultaneously when facing novel stimuli. Age affected the response to novel stimuli significantly, with immature individuals responding to novel stimuli most frequently and infants least frequently. No significant differences were observed for sex, although females were more responsive to the novel object than were males. Our results support the “readiness to eat” hypothesis that the presence of a novel object can increase latencies to consume familiar food.

scholarly journals Characterising the vocal repertoire of the Indian wolf (Canis lupus pallipes)

2019 ◽  
Author(s):  
Sougata Sadhukhan ◽  
Lauren Hennelly ◽  
Bilal Habib
Keyword(s):  
Fundamental Frequency ◽  
Vocal Communication ◽  
Function Analysis ◽  
Principal Component ◽  
Foraging Strategy ◽  
Frequency Variation ◽  
Vocal Repertoire ◽  
Silhouette Width ◽  
Survey Responses ◽  
Free Ranging

Vocal communication in social animals plays a crucial role in mate choice, maintaining social structure, and foraging strategy. The Indian grey wolf, among the less studied subspecies, is a social carnivore that lives in groups called packs and has many types of vocal communication. In this study, we characterise harmonic vocalisation types in the Indian wolf using howl survey responses and opportunistic recordings from captive and nine packs (each pack contains 2-9 individuals) of free-ranging Indian wolves. Using principal component analysis, hierarchical clustering, and discriminant function analysis, we found four vocal types using 270 recorded vocalisations (Average Silhouette width Si = 0.598) which include howls and howl-bark (N=238), whimper (N=2), social squeak (N=28), and whine (N=2). Although having a smaller body size, Indian wolf howls have an average mean fundamental frequency of 0.422KHz (±0.126), which is similar to other Holarctic clade subspecies. The whimper showed the highest frequency modulation (37.296±4.601 KHz) and the highest mean fundamental frequency (1.708±0.524 KHz) compared to other call types. Less information is available on the third vocalisation type, i.e. ‘Social squeak’ or ‘talking’ (Mean fundamental frequency =0.461±0.083 KHz), which is highly variable (coefficient of frequency variation = 18.778±3.587 KHz). Our study’s characterisation of the Indian wolf’s harmonic vocal repertoire provides a first step in understanding the function and contextual use of vocalisations in this social mammal.

scholarly journals An examination of factors potentially influencing birth distributions in golden snub-nosed monkeys (Rhinopithecus roxellana)

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e2892 ◽  
Author(s):  
Zuofu Xiang ◽  
Wanji Yang ◽  
Xiaoguang Qi ◽  
Hui Yao ◽  
Cyril C. Grueter ◽  
...  
Keyword(s):  
Food Availability ◽  
Reproductive Activity ◽  
Day Length ◽  
Circular Statistics ◽  
Rhinopithecus Roxellana ◽  
Average Temperature ◽  
Conception Date ◽  
Reproductive Events ◽  
Free Ranging

Many species of primates are considered seasonal breeders, but the set of factors, such as food availability, day length and temperature, that influence the timing of reproductive events for both wild and captive individuals remains unclear. Here, we examine the role of factors in shaping breeding patterns inRhinopithecus roxellana, a temperate colobine primate. We used circular statistics to describe and compare the patterns of reproductive seasonality among individuals in 13 captive groups and two free ranging but provisioned groups at various locations throughout China. Almost 90% of births occurred in March, April and May in adult females residing in both free ranging (n = 131) and captive groups (n = 407). Births occurred principally in 2–4 months prior to the peak of food availability, while conceptions occurred in 1–2 months after the peak of food availability in free ranging but provisioned groups. Day length (latitude) had a significant effect on the timing of reproduction. However, females that experienced a wide variation of temperature between the lowest and highest monthly average temperature had a later conception date. These results support that day length and temperature might be factor influencing the timing of reproductive activity.

scholarly journals Vocal repertoire of free-ranging black howler monkeys’ (Alouatta pigra): Call types, contexts, and sex-related contributions

2017 ◽  
Vol 79 (5) ◽  
pp. e22630 ◽  
Author(s):  
Margarita Briseño-Jaramillo ◽  
Véronique Biquand ◽  
Alejandro Estrada ◽  
Alban Lemasson
Keyword(s):  
Alouatta Pigra ◽  
Vocal Repertoire ◽  
Howler Monkeys ◽  
Black Howler ◽  
Black Howler Monkeys ◽  
Free Ranging
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