Environmental correlates of vocal communication of wild pygmy marmosets, Cebuella pygmaea

2002 ◽  
Vol 63 (5) ◽  
pp. 847-856 ◽  
Author(s):  
Stella de la Torre ◽  
Charles T Snowdon
Keyword(s):  
Vocal Communication ◽  
Environmental Correlates ◽  
Cebuella Pygmaea ◽  
Pygmy Marmosets

'BABBLING' IN PYGMY MARMOSETS: DEVELOPMENT AFTER INFANCY

Behaviour ◽  
2001 ◽  
Vol 138 (10) ◽  
pp. 1235-1248 ◽  
Author(s):  
Charles Snowdon ◽  
A. Margaret Elowson
Keyword(s):  
Social Interactions ◽  
Human Infants ◽  
Call Type ◽  
Adult Form ◽  
Vocal Behaviour ◽  
Cebuella Pygmaea ◽  
Pygmy Marmoset ◽  
Pygmy Marmosets ◽  
Group Members ◽  
Reduced Rate

AbstractInfant pygmy marmosets (Cebuella pygmaea) are extremely vocal with much of their calling occurring in long sequences of mixed call-types that appears to have several parallels to the babbling of human infants (Elowson et al., 1998b). We refer to this vocal behaviour as Pygmy Marmoset Babbling (PMB) (Elowson et al., 1998a). We followed several of our original subjects beyond infancy to adulthood. Babbling bouts continued to appear through the age of puberty though at a reduced rate from that seen in infancy, but babbling was rarely observed in adults. With increasing age the vocal bouts contained a greater diversity of call types per bout and a decrease in call series duration. In addition, with increasing age there were decreasing proportions of calls that were Adult Variant and Infant calls and an increase in Adult calls. Structural analyses of trills, the most common call type found in vocal bouts, showed increased proportions of well-formed trills and decreased proportions of poorly formed trills with increased age, with different features reaching adult form at different ages. Babbling by juvenile marmosets was associated with increased social interactions with other group members as we had observed with infants. 'Babbling' in both infant and juvenile marmosets might provide vocal practice as well as attract attention from other group members.

Communication of ovulatory state to mates by female pygmy marmosets, Cebuella pygmaea

1995 ◽  
Vol 49 (3) ◽  
pp. 615-621 ◽  
Author(s):  
Lisa J. Converse ◽  
Anne A. Carlson ◽  
Toni E. Ziegler ◽  
Charles T. Snowdon
Keyword(s):  
Cebuella Pygmaea ◽  
Pygmy Marmosets

scholarly journals Cognitive Components of Vocal Communication: A Case Study

Animals ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 126 ◽  
Author(s):  
Charles Snowdon
Keyword(s):  
Vocal Communication ◽  
Brain Size ◽  
Food Preferences ◽  
Emotional States ◽  
Long Distance ◽  
Call Structure ◽  
Cognitive Components ◽  
Pygmy Marmosets ◽  
Contact Calls

Communication among nonhuman animals is often presented as rigid and inflexible, reflecting emotional states rather than having any cognitive basis. Using the world’s smallest monkey, the pygmy marmoset (Cebuella pygmaea), with the smallest absolute brain size amongst simian primates as a case study, I review the role of cognition in the development and usage of vocalizations in pygmy marmosets and present new data on the instrumental use of babbling and of food associated vocalizations. Pygmy marmosets have several contact calls that differ in the psychoacoustic properties for sound localization as well as the distance at which they carry through the rainforest. Marmosets use these calls strategically based on distance from neighbors. Marmosets alter spectral and temporal aspects of call structure when exposed to new groups and when newly mated. They display population specific vocal dialects. Young pygmy marmosets engage in extensive babbling behavior rewarded by parents that helps the young develop adult vocal structures, but older monkeys also use babbling instrumentally in conflict situations. Specific food referential calls generally relate to food preferences, but food calls are suppressed in the presence of animate prey. Unmated animals systematically combine a long distance call with food calls as though advertising for mates. Taken together, these examples show that even small brained primates use their vocal signals flexibly and strategically in response to a variety of environmental and social conditions.

Mirror-image responses in pygmy marmosets (Cebuella pygmaea)

1983 ◽  
Vol 5 (3) ◽  
pp. 211-219 ◽  
Author(s):  
Anne R. Eglash ◽  
Charles T. Snowdon
Keyword(s):  
Mirror Image ◽  
Cebuella Pygmaea ◽  
Pygmy Marmosets

Conservation Status of Pygmy Marmosets (Cebuella Pygmaea) in Ecuador

2009 ◽  
pp. 451-464 ◽  
Author(s):  
Stella de la Torre ◽  
Pablo Yépez ◽  
Charles T. Snowdon
Keyword(s):  
Conservation Status ◽  
Cebuella Pygmaea ◽  
Pygmy Marmosets
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