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Foraging mode in lacertid lizards: variation and correlates

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Foraging strategy was observed in five species of Israeli lacertid lizards in the field. Acanthodactylus scutellatus is a sit-and-wait strategist, whereas A. boskianus, A. schreiberi, Lacerta laevis and Mesalina guttulata forage widely. However, the actual values differed from those reported by Huey and Pianka (1981) for Kalahari lacertids, possibly indicating the existence of a continuum of foraging modes. Foraging intensity (proportion of time spent moving or frequency of moves) is positively correlated to relative tail length, and negatively correlated to relative clutch mass. Additional possible correlates are discussed, and some cautionary remarks added.

Affiliations: 1: George S. Wise Faculty of Life Sciences, Department of Zoology, Tel Aviv University, 69978 Tel Aviv, Israel; 2: Department of Zoology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel; 3: Department of Statistics, The Hebrew University of Jerusalem, 91905 Jerusalem, Israel; 4: Department of Zoology, The Hebrew University of Jerusalem, 91904 Jerusalem, IsraelDepartment of Zoology, University of Texas, Austin, TX78712, U.S.A.


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