Analyses of feeding lateralization in the small-eared bushbaby (Otolemur garnettii): A comparison with the ring-tailed lemur (Lemur catta).

Milliken, Garrett W.; Stafford, Donna K.; Dodson, Deanna L.; Pinger, Cindy D.; Ward, Jeannette P.

doi:10.1037/0735-7036.105.3.274

Cited by 46 publications

(36 citation statements)

References 19 publications

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“…If this is true, then the strength of laterality should increase with age-at least among younger animals. This trend has been shown for some other prosimians (Ward et al 1990;Milliken et al 1991). Feistner et al (1994) indeed suggested that this was also the case for the aye-ayes they studied, with only the youngest of these captive animals, Fred (10 months old), showing ambipreference in all measures and the other three juveniles and subadults (Zaza, Sambany, and Annabellee) showing hand preference in at least one measure.…”

Section: Discussionmentioning

confidence: 56%

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Patterns and laterality of hand use in free-ranging aye-ayes (Daubentonia madagascariensis) and a comparison with captive studies

Lhota

Jůnek

Bartoš

2008

J Ethol

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We observed hand use in free-ranging aye-ayes (Daubentonia madagascariensis) on an island in the Mananara River, eastern Madagascar. The results were compared with those of two conflicting studies on hand laterality in captive aye-ayes. We argue that patterns of hand preference in wild aye-ayes are comparable to those of captive animals and that discrepancies between studies are-at least partly-caused by different ways of collecting and processing data. Aye-ayes fit Level 2 of the categories of hand laterality described by McGrew and Marchant (Yearb Phys Anthropol 40:201-232, 1997), with some individuals showing significant hand preference, but with the proportion of right-to left-preferent animals being very close to 1:1. We observed hand preference to be consistent for two of the most frequent behaviors, tapping and probing with fingers. Reaching and holding objects in hands is rare in aye-ayes, and the patterns of hand use in aye-ayes are therefore not directly comparable with those of other prosimians in which laterality has been studied. We detected no effect of sex on hand preference and were unable to determine whether there is an effect of age. The posture adopted by the animals did not influence hand preference.

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Section: Discussionmentioning

confidence: 56%

“…The strength of laterality but also the proportion of animals that show the right-hand bias may increase with age (Ward et al 1990). A predominantly right-hand preference is sometimes found in females (Milliken et al 1991;Dodson et al 1992) and possibly in old animals ).…”

Section: Introductionmentioning

confidence: 96%

Patterns and laterality of hand use in free-ranging aye-ayes (Daubentonia madagascariensis) and a comparison with captive studies

Lhota

Jůnek

Bartoš

2008

J Ethol

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“…Several studies using a variety of primate species have shown that hand preference may vary as a function of age (WESTERGAARD • SUOMI, 1993;HOPKINS & BARD, 1993), sex (WARD et al, 1990;MILLIKEN et al, 1991), task complexity (FAGOT & VAUCLAIR, 1991;HELMS TILLERY et al, 1995), posture (FoRSYTHE et al, 1988;RONEY & KING, 1993;HOPKINS, 1993;DEVLEESCHOUWER et al, 1995), or of whether the hand use is visually or tactually guided VAUCLAIR & FAGOT, 1987).…”

Section: Introductionmentioning

confidence: 95%

A study of correlates of hand preferences in squirrel monkeys (Saimiri sciureus)

Laska

1996

Primates

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ABSTRACT. The purpose of this study was to test the influence of sex, age, social rank, matriline membership, posture, and visual and tactual motor control on manual preferences in Saimiri sciureus. A well-established social group of 12 squirrel monkeys, aged 2 to 14 yrs and consisting of two matrilines with social rank known for each animal, was presented with four different foodreaching tasks and assessed for hand preferences with a minimum of 100 reaches per animal.Frequency of occurrence of hand preferences at the group level and degree of hand preferences at the individual level depended on posture and on whether the reaching act took place under visual or tactual guidance. Sex, age, social rank, and matriline membership were not found to determine frequency of occurrence, direction or degree of hand preferences with the exception of one task in which a significant negative correlation between the degree of hand preference and age was found. Nine out of 12 monkeys showed task-dependent changes in the hand they used preferentially while only three animals preferred the same hand in all four tasks. Significant preferences for the use of right or left hand on a given task were distributed almost equally between individuals. Thus, the results of this study suggest task-specific demands like posture and/or whether reaching was visually or taetually guided to be the major correlates of hand preferences in food-reaching tasks in squirrel monkeys.

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“…In comparison, Prosimii (lemuriforms and lorisiforms) are thought to be less variable in grip posture, to show no digital individualization and to use the mouth for grasping more often [Bishop, 1964]. In order to grasp static foods, the lemuriforms appear to prefer to grasp with the mouth as shown both by observations in the wild [Petter, 1962] and studies on manual preference [Larson et al, 1989;Ward et al, 1990;Milliken et al, 1991a;Dodson et al, 1992;Ward and Hopkins, 1993;Ward, 1995;Leliveld et al, 2008;Nelson et al, 2009;Scheumann et al, 2011]. However, these studies on manual preference often adopted protocols forcing the subjects to take static food through a wire mesh or a slot with their hand.…”

Section: Introductionmentioning

confidence: 99%

Food Prehension and Manipulation in Microcebus murinus (Prosimii, Cheirogaleidae)

Reghem¹,

Tia²,

Bels³

et al. 2011

IJFP

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Among primates, apes and monkeys are known to use their hands and to exhibit independent control of their fingers. In comparison, Prosimii are thought to have less digital individualization and to use their mouth more commonly for prehension. Unfortunately, prehension and manipulation studies in Prosimii have been conducted in conditions constraining the subject to grasp with the hand. Moreover, the effect of food size remains unexplored, even though it could affect the use of the hands versus the mouth. Thus, whether prosimians use the hand or the mouth to grasp and manipulate food items of different sizes in unconstrained conditions remains unclear. To address this question, we characterized the eating and manipulation patterns of Microcebus murinus in unconstrained conditions, using three food sizes. The results showed that M. murinus showed (i) an eating pattern similar to that of rodents, with smaller food items being grasped with the mouth, (ii) a greater tendency to use the hands for prehension of larger foods, and (iii) plasticity during food manipulation similar to that which has been observed in rodents. These results are discussed in the framework of grasping in mammals and are used to discuss the origins of prehension in primates.

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Analyses of feeding lateralization in the small-eared bushbaby (Otolemur garnettii): A comparison with the ring-tailed lemur (Lemur catta).

Cited by 46 publications

References 19 publications

Patterns and laterality of hand use in free-ranging aye-ayes (Daubentonia madagascariensis) and a comparison with captive studies

Patterns and laterality of hand use in free-ranging aye-ayes (Daubentonia madagascariensis) and a comparison with captive studies

A study of correlates of hand preferences in squirrel monkeys (Saimiri sciureus)

Food Prehension and Manipulation in Microcebus murinus (Prosimii, Cheirogaleidae)

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