Abstract
Patterned string tasks are a test of perceptual capacity and the understanding of means-end connections. Primates can solve complex forms of this task in laboratories. However, this may not indicate the level of such cognition that is commonly employed in the wild, where decision-making time is often short and distractions such as predator avoidance and competition between conspecifics are often prevalent. The current study tests whether wild common marmosets (Callithrix jacchus) can successfully complete the simplest form of the patterned string task, parallel strings, while in their natural environment. Although 12 out of 13 marmosets could successfully complete the task, in previous laboratory-based studies on primates, the errors at this task by all primate species tested were consistently lower than in the present study. This is probably explained by the added difficulties imposed by the natural setting of the task in the present study, exemplified by a significant increase in observed vigilance behaviour by subject animals prior to attempts at the task that were unsuccessful. The undertaking of such tasks by common marmosets in situ probably provides a more reasonable representation of the levels of cognitive capacity expressed by this species in the wild than do laboratory-based studies of the task.
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References
Alonso C, Langguth A (1989) Ecologia e comportamento de Callithrix jacchus (Primates: Callitrichidae) numa ilha de Floresta Atlântica. Rev Nordest Biol 6:105–137
Balasch J, Sabater-Pi J, Padrosa T (1974) Perceptual learning ability in Mandrillus sphinx and Cercopithecus nictitans. Rev Espanhola de Fisiol 30:15–20
Boere V (2001) Environmental enrichment for neotropical primates in captivity. Ciência Rural 31:543–551
Bonvicino CR (1989) Ecologia e comportamento de Allouata belzebul (Primates: Cebidae) na mata atlântica. Rev Nord de Biol 6:149–179
Caine NG (1996) Foraging for animal prey by outdoor groups of geoffroy's marmosets (Callithrix geoffroyi). Int J Primatol 17:933–945
Ferrari SF, Lopes Ferrari MA (1990) Predator avoidance in buffy-headed marmosets, Callithrix flaviceps. Primates 31:323–338
Finch G (1941) The solution of pattern string problems by chimpanzees. J Comp Psychol 32:83–90
Ghazanfar AA, Santos LR (2004) Primate brains in the wild: The sensory bases for social interactions. Nat Rev Neurosci 5:603–616
Harlow HF, Settlage PH (1934) Comparative behaviour of primates VII capacity of monkeys to solve patterned string tests. J Comp Psychol 18:423–434
Hauser MD, Kralik J, Botto-Mahan C (1999) Problem solving and functional design features: Experiments on cotton-top tamarins, Saguinus oedipus oedipus. Anim Behav 57:565–582
Ingram JC (1977) Interaction between parents and infants and the development of independence in the common marmoset (Callithrix jacchus). Anim Behav 25:811–827
Pepperberg IM (2004) Insightful string-pulling in grey parrots (Psittacus erithacus) is affected by vocal competence. Anim Cog 7:263–266
Peres CA (2000) Identifying keystone plant resources in tropical forests: The case of gums from Parkia pods. J Tropic Ecol 16:287–317
Stevenson MF, Rylands AB (1988) The marmosets, genus Callithrix. In: Mittermeier AR, Rylands BA, Coimbra-Filho A, Fonseca BAG (eds) Ecology and behaviour of neotropical primates, vol 2. World Wildlife Fund, Washington, DC
Tomasello M, Call J (1997) Space and objects. In: Tomasello M, Call J (eds) Primate cognition. Oxford University Press, New York, pp 27–56
Acknowledgements
We would like to thank Verena Schiel for her help during the fieldwork and Roger Holder for statistical advice. The Society for Experimental Biology provided travel grant funding for Lewis Halsey. This work complied with Brazilian law.
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Halsey, L.G., Bezerra, B.M. & Souto, A.S. Can wild common marmosets (Callithrix jacchus) solve the parallel strings task?. Anim Cogn 9, 229–233 (2006). https://doi.org/10.1007/s10071-006-0016-9
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DOI: https://doi.org/10.1007/s10071-006-0016-9