Relative efficiency of preferred and nonpreferred patterns of lateralized foraging in the gentle lemur (Hapalemur griseus).

Lateralized patterns of hand use in species-typical bamboo shoot foraging were evaluated for efficiency in five female and six male gentle lemurs (Hapalemur griseus sp.). Efficiency was defined as amount of time required to complete a foraging response sequence.

Patterns of hand and mouth lateral biases in bamboo leaf shoot feeding and simple food reaching in the gentle lemur (Hapalemur griseus).

Lateralized feeding behaviors of 7 wild-born and 6 captive-born Hapalemur griseus sp. were evaluated in two conditions, simple food reaching and species-typical bamboo foraging. Gentle lemurs were found to have the strongest lateral hand preference in simple food reaching of any prosimian species yet studied.