Temporal patterns of chimpanzee loud calls in the Issa Valley, Tanzania
Evidence of nocturnal acoustic behavior in wild chimpanzees
Bibliographic Data
| ID | 8315282 |
|---|---|
| Authors | Alex K Piel (0000-0002-4674-537X, School of Natural Sciences and Psychology Liverpool John Moores University Liverpool United Kingdom, corresponding author) |
| Year | 2018 |
| Volume | 166 |
| Issue | 3 |
| Pages | 530-540 |
| Publication date | 2018-07-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | American Journal of Physical Anthropology (JOURNAL) |
| Journal identifiers | ISSN: 0002-9483 • E-ISSN: 1096-8644 |
| Publisher | Wiley (PUBLISHER • GB) |
| DOI | 10.1002/ajpa.23609 |
| PMID | 29989161 |
| OpenAlex | W2856527213 |
| Language | EN |
| Citations received | 11 |
| References cited | 82 |
OBJECTIVES: Much is known about chimpanzee diurnal call patterns, but far less about night-time vocal behavior. I deployed a passive acoustic monitoring (PAM) system to assess 24-hr temporal acoustic activity of wild, unhabituated chimpanzees that live in a woodland mosaic habitat similar to hominin landscapes from the Plio-Pleistocene. A primary aim was to apply findings to our broader understanding to chimpanzee 24-hr activity patterns, and what implications this may have for reconstructing hominin adaptations to similarly hot, dry, and open landscapes. I also tested whether chimpanzees conform to the acoustic adaptation hypothesis, and produce loud calls during periods of optimal sound transmission. METHODS: Nine custom-made solar-powered acoustic transmission units (SPATUs) recorded continuously for 250 days over 11 months in the Issa Valley, western Tanzania. I complemented acoustic data with environmental data from weather stations as well as behavioral data collected on chimpanzee nest group sizes to assess the relationship between party size and calling. RESULTS: Chimpanzees called at all hours of the day and night in both wet and dry seasons, and night and day calls exhibited parallel rates/month, although twilight calls were produced significantly more in the dry, compared to the wet season. Calls were more likely during warmer temperatures and lower humidity. Call rate was positively associated with (nest) party size and counter-calls exhibited no temporal variation in their origins (similar vs. adjacent valleys). CONCLUSIONS: Chimpanzees were acoustically active throughout the 24-hr cycle, although at low rates compared to diurnal activity, revealing night-time activity in an ape otherwise described as diurnal. Chimpanzee loud calls partially, and weakly, conformed to the acoustic adaptation hypothesis and likely responded to social, rather than environmental factors. Call rates accurately reflect grouping patterns and PAM is demonstrated to be an effective means of remotely assessing activity, especially at times and from places that are difficult to access for researchers
Biology · Geography · Nocturnal · Tanzania · Zoology · Animal Vocal Communication and Behavior · Ecology · Pleistocene-Era Hominins and Archaeology · Primate Behavior and Ecology
Nesting, sleeping, and nighttime behaviors in wild and captive great apes
Red-tailed monkeys (Cercopithecus ascanius) prey upon and mob birds in the Issa Valley, western Tanzania
Spider monkeys (Ateles geoffroyi) are vocally active throughout the night in a human-modified habitat
An integrated passive acoustic monitoring and deep learning pipeline for black‐and‐white ruffed lemurs ( Varecia variegata ) in Ranomafana National Park, Madagascar
Chimpanzee Activity and Behavioral Diversity Extends Across 24 Hours in Both Captive and Wild Settings
Environmental and Temporal Effects on Vocal Activity in a Nocturnal Primate
Nocturnal Mating Behavior in Tibetan Macaques
Sleep and nesting behavior in primates
Noninvasive Technologies for Primate Conservation in the 21st Century
Passive Acoustic Cue Counting Surveys for Vocal Primates
Distribution, Population Density, and Behavior of Dwarf Galagos (Paragalago sp.) in Taita Hills, Kenya
What makes wild chimpanzees wake up at night?
The behaviour and ecology of wild orang-utans (Pongo pygmaeus)
A juvenile early hominin skeleton from Dikika, Ethiopia
Male dominance rank and reproductive success in chimpanzees, Pan troglodytes schweinfurthii
Soundscape Ecology
Phrase structure of wild chimpanzee pant hoots
Cathemerality in the mongoose lemur,Eulemur mongoz
Nationwide census of gorilla ( gorilla g. gorilla ) and chimpanzee ( Pan t. troglodytes ) populations in Gabon
Calling in wild silvery gibbons (Hylobates moloch) in Java (Indonesia)
Nonlinear acoustics in pant hoots of common chimpanzees ( Pan troglodytes )
Validation of an acoustic location system to monitor Bornean orangutan ( Pongo pygmaeus wurmbii ) long calls
Vocal Signature in Wild Infant Chimpanzees
Vocal coordination of troop movement among white‐faced capuchin monkeys, Cebus capucinus
Dusk calling in barbary macaques ( Macaca sylvanus )
Habitat acoustics and primate communication
Predation on primates
Sleeping Parties and Nest Distribution of Chimpanzees in the Savanna Woodland, Ugalla, Tanzania
Acoustic Niches of Siberut Primates
Structure and use of distance calls in wild bonobos (Pan paniscus)
Sexual Selection in the Loud Calls of Male Primates
The ecology of singing in Kloss gibbons (Hylobates klossii) on Siberut Island, Indonesia
Nocturnal activity in wild chimpanzees ( Pan troglodytes )
Nocturnal behavior by a diurnal ape, the West African chimpanzee ( Pan troglodytes verus ), in a savanna environment at Fongoli, Senegal
The diet of open-habitat chimpanzees (Pan troglodytes schweinfurthii) in the Issa valley, western Tanzania
Loss of air sacs improved hominin speech abilities
| Unique citing works | 11 |
|---|---|
| Citations per year | 1,38 |
| Citation span | 2018 - 2026 (9) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 8 |