The Ecology and Behavior of Squirrel Monkeys (&lt;i&gt;Saimiri oersted&lt;/i&gt;&lt;i&gt;i&lt;/i&gt;) in a Natural Forest in Western Panama

Baldwin, John W.; Baldwin, Janice I.

doi:10.1159/000155478

Cited by 107 publications

(37 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This has also been disputed (Caine 1987) on the basis of Garber's (1986) finding that tamarins are capable of traveling efficiently between fruit trees rather than simply "searching" for them. Indeed many cebids have been recorded to forage and feed on fruits before sunrise and to continue until well after sunset (Thorington, 1967;Baldwin and Baldwin, 1972). However, the relatively higher metabolic requirements of smaller-bodied callitrichids may constrain foraging in the early morning below certain efficiency thresholds.…”

Section: Time Of Entry To and Exit From Sleeping Sitesmentioning

confidence: 99%

Long‐term patterns of sleeping site use in wild saddleback (Saguinus fuscicollis) and mustached tamarins (S. mystax): Effects of foraging, thermoregulation, predation, and resource defense constraints

Smith

Knogge

Huck

et al. 2007

American J Phys Anthropol

View full text Add to dashboard Cite

Sleeping sites are an important aspect of an animal's ecology given the length of time that they spend in them. The sleep ecology of wild saddleback and mustached tamarins is examined using a long‐term data set covering three mixed‐species troops and 1,300+ tamarin nights. Seasonal changes in photoperiod accounted for a significant amount of variation in sleeping site entry and exit times. Time of exit was more closely correlated with sunrise than time of entry was with sunset. Both species entered their sleeping sites when light levels were significantly higher than when they left them in the morning. Troops of both species used >80 individual sites, the majority being used once. Mustached tamarins never used the same site for more than two consecutive nights, but saddlebacks reused the same site for up to four consecutive nights. Mustached tamarins slept at significantly greater heights than saddleback tamarins. There were consistent interspecific differences in the types of sites used. Neither the presence of infants, season, nor rainfall affected the types or heights of sites chosen. Sleeping sites were located in the central area of exclusive use more often than expected, and their position with respect to fruiting trees indicated a strategy closer to that of a multiple central place forager than a central place forager. These findings are discussed in light of species ecology, with particular reference to predation risk, which is indicated as the major factor influencing the pattern of sleeping site use in these species. Am J Phys Anthropol 2007. © 2007 Wiley‐Liss, Inc.

show abstract

Section: Time Of Entry To and Exit From Sleeping Sitesmentioning

confidence: 99%

Long‐term patterns of sleeping site use in wild saddleback (Saguinus fuscicollis) and mustached tamarins (S. mystax): Effects of foraging, thermoregulation, predation, and resource defense constraints

Smith

Knogge

Huck

et al. 2007

American J Phys Anthropol

View full text Add to dashboard Cite

show abstract

“…A medida que los parches de hábitat se vuelven más pequeños y más separados, hay un incremento de las tasas de extinción y una disminución de la tasa de recolonización (Hanski 1997), lo que también afecta la dinámica de supervivencia de una población, sobre todo para especies en peligro de extinción, cuya respuesta a los cambios producidos por la fragmentación del hábitat (Saunders et al 1991, Turner et al 2001) y a la complejidad del paisaje es percibida de manera diferencial (Turner et al 2001, Morrison 2002, por lo que habría que determinar estos parámetros para cada subpoblación de monos tití para asegurar su conservación y poder determinar su respuesta a estos cambios Lo anterior es de vital importancia, sobre todo cuando diversos autores, en estudios previos sobre el tamaño y la composición de las tropas de las diferentes especies de Saimiri spp., han determinado que en lugares donde la calidad del hábitat es menor el número de individuos por tropa también es menor, al igual que las tropas de hábitat fragmentados, en contraste con tropas en bosques tropicales más extensos, que pueden llegar hasta a 300 individuos por tropa, por ejemplo en Brasil, Perú y Colombia (Baldwin y Baldwin 1972y 1986, Wong 1990a, Wong 1990b, Boinski 1987a, Vaughan et al 1980, Thorington 1968, Terborgh 1983, Klein y Klein 1973, Klein [en: Robinson y Janson 1987, Freese et al 1982, Neville 1976, Baldwin y Baldwin 1971, Altricher et al 1996, Sierra et al 2003, Rodríguez 1999, Cáceres et al 2002.…”

Section: The Squirrel Monkey' Habitat Status Was Evaluated Between Seunclassified

Hábitat y población de mono tití (Cebidae: Saimirioerstediioerstedii) en la península de Osa, Costa Rica

Solano

Wong²

2009

Rev. Ambientales.

View full text Add to dashboard Cite

show abstract

“…Saimiri are New World monkeys and are classified as omnivorous frugivores that consume fruit, leaves, insects, and nuts. Saimiri troops have been observed to spend up to 95% of their waking hours traveling and rapidly foraging in their natural Central and South American rain forest habitat (Baldwin & Baldwin, 1972). Laboratory spatial memory tasks with these primates have revealed a tendency to sample all of the available alternatives, instead of precisely returning to a consistently baited location (Roberts, Mitchell, & Phelps, 1993).…”

mentioning

confidence: 99%

Landmark use by squirrel monkeys (Saimiri sciureus)

Sutton

Olthof

Roberts

2000

Animal Learning & Behavior

View full text Add to dashboard Cite

Two squirrel monkeys searched for a reward buried in 1of 144holes that formed a 12 X 12grid (48 X 50 cm). An array of vertical, colored landmarks was placed on the grid, and their locations on the grid were changed from trial to trial. Duringtraining trials, the mealworm reward was placed either in the center of a square array of landmarks (Experiments 1 and 3) or midway between two landmarks (Experiment 2). On nonrewarded test trials, the monkeys searched among landmarks placed in the same . arrays as those used in training and among landmarks placed in an expanded array (Experiments 1and 2) or in an array intermediate between the two arrays used in training (Experiment 3). Distributions of searches on test trials indicated that the monkeys searched mostly within the configuration of the landmarks but that they had not coded the location of the reward as being either in the middle of the landmarks or at a fixed distance and direction from an individual landmark.A crucial form of information for people and animals is position in space. Appropriate orientation and navigation are essential for successful foraging and predator evasion, among other things. A number ofstudies have investigated how a variety of species use visual information to encode spatial locations (see Roberts, 1998, for a review). For example, Cartwright and Collett (1983) trained bees to find a cup of sucrose that was placed equidistant from three black cylindrical landmarks. The landmarks and the sucrose were moved to a different location in the testing room for each trial, so that the landmarks were the only consistent cue for the location of the sucrose. After the bees reliably found the sucrose, the landmark array was altered on test trials by shortening or lengthening the distance between the cylinders. On these test trials, the sucrose was not present, and the bees' flight path was recorded. When the array was expanded, the bees searched farther away from the landmarks than they did in training, and when it was contracted, the bees searched closer to the landmarks. Cartwright and Collett (1983) suggested that the bees used a simple method to estimate the location of the sucrose on test trials: They searched in a location from which the landmarks could be visually perceived as being in the same compass directions as they were from the goal location in training. The bees seemed to have formed a "snapshot" of the training array as viewed from the goal location and then to have referred to that snapshot memory when searching on test trials. Consequently, when the array was expanded, the bees searched farther away so that the test array would appear similar to the This research was supported by a research grant from the Natural Sciences and Engineering Research Council of Canada. Correspondence concerning this article should be addressed to W. A. Roberts, Department of Psychology, University of Western Ontario, London, Ontario N6A 5C2, Canada (e-mail: roberts@julian.uwo.ca).original training configuration, and they searched close when the arra...

show abstract

The Ecology and Behavior of Squirrel Monkeys (<i>Saimiri oersted</i><i>i</i>) in a Natural Forest in Western Panama

Cited by 107 publications

References 5 publications

Long‐term patterns of sleeping site use in wild saddleback (Saguinus fuscicollis) and mustached tamarins (S. mystax): Effects of foraging, thermoregulation, predation, and resource defense constraints

Long‐term patterns of sleeping site use in wild saddleback (Saguinus fuscicollis) and mustached tamarins (S. mystax): Effects of foraging, thermoregulation, predation, and resource defense constraints

Hábitat y población de mono tití (Cebidae: Saimirioerstediioerstedii) en la península de Osa, Costa Rica

Landmark use by squirrel monkeys (Saimiri sciureus)

Contact Info

Product

Resources

About