Interpopulation differences in exudate feeding of pygmy marmosets in Ecuadorian Amazonia

2005 ◽  
Vol 66 (2) ◽  
pp. 145-158 ◽  
Author(s):  
Pablo Yépez ◽  
Stella De La Torre ◽  
Charles T. Snowdon
Keyword(s):  
Pygmy Marmosets ◽  
Exudate Feeding

Pygmy Marmoset Exudate Feeding Stimulates Exudate Production

2021 ◽  
pp. 1-8
Author(s):  
Colin P. Jackson ◽  
Ulrich H. Reichard
Keyword(s):  
Random Effect ◽  
Renewable Resource ◽  
Treatment Conditions ◽  
Fungal Load ◽  
Pygmy Marmosets ◽  
Cumulative Production ◽  
Within Subjects ◽  
Exudate Feeding ◽  
Mixed Modelling

Exudates are an important renewable resource for many primates. Exudate renewability is based on observations of primates repeatedly depleting exudate sites and measures of exudate trees’ daily replenishment rates, but the role of the consumer in the renewal process is unclear. Trees’ exudate production may be independent of the consumer, remaining unchanged regardless of depletion frequency, but since trees produce exudates as a physiological response to fungal infection, they may produce more exudates with more frequent depletion. To test these competing hypotheses, we employed a within-subjects experimental design in which we exposed pygmy marmosets’ exudate holes to two treatment conditions: collecting exudates after 5 h and collecting exudates every hour for five consecutive hours. To compare production outputs between treatments, we used generalised linear mixed modelling in which log-transformed production data were a function of treatment with exudate holes nested within trees as a random effect. The model indicated that the cumulative production of hourly exudate removal was significantly greater than the amount accumulated after 5 h. Furthermore, the random effect of holes nested within trees had the greatest impact on variation in differences between treatments, but another unknown source also contributed to the observed variation. These results support the hypothesis that consumers partly drive exudate production, and although it is unknown what other factors, such as fungal load and healing trajectory, may influence variation between treatments, we conclude that pygmy marmosets can stimulate exudate production by consuming exudates.

Dialects in pygmy marmosets? Population variation in call structure

2009 ◽  
Vol 71 (4) ◽  
pp. 333-342 ◽  
Author(s):  
Stella de la Torre ◽  
Charles T. Snowdon
Keyword(s):  
Population Variation ◽  
Call Structure ◽  
Pygmy Marmosets

Comparative Ecology of Exudate Feeding by Lorises (Nycticebus, Loris) and Pottos (Perodicticus, Arctocebus)

2010 ◽  
pp. 155-168 ◽  
Author(s):  
K. Anne-Isola Nekaris ◽  
Carly R. Starr ◽  
Rebecca L. Collins ◽  
Angelina Wilson
Keyword(s):  
Comparative Ecology ◽  
Exudate Feeding

Effects of human activities on wild pygmy marmosets in Ecuadorian Amazonia

2000 ◽  
Vol 94 (2) ◽  
pp. 153-163 ◽  
Author(s):  
Stella de la Torre ◽  
Charles T Snowdon ◽  
Monserrat Bejarano
Keyword(s):  
Human Activities ◽  
Pygmy Marmosets
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