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17 February 2020 Habitat-Dependent Search Behavior in the Colorado Checkered Whiptail (Aspidoscelis neotesselata)
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Abstract

We compared the movement patterns of foraging Colorado Checkered Whiptails (Aspidoscelis neotesselata) in 2 different habitat types: shrub-grassland and pinyon pine–juniper woodland. We characterized movement by (1) segmenting movement paths into step lengths and turn angles and (2) determining first-passage times (FPTs). Lizards differed in their pattern of movement in the 2 habitats. FPTs were shorter in the pinyon pine–juniper woodland habitat and were positively correlated with ground cover. Lizards also moved more frequently, had longer step lengths, and traveled greater total distances in the pinyon pine–juniper woodland. There were no habitat differences in turn angles, net displacement, or movement path straightness. Habitat-based differences in movement might reflect differences in prey availability and predation risk.

© 2020
Kaera Utsumi, Carina Kusaka, Rachael Pedersen, Catherine Staley, Lisa Dunlap, Sophia Gilbert Smith, Maria A. Eifler, and Douglas A. Eifler "Habitat-Dependent Search Behavior in the Colorado Checkered Whiptail (Aspidoscelis neotesselata)," Western North American Naturalist 80(1), 11-18, (17 February 2020). https://doi.org/10.3398/064.080.0102
Received: 3 January 2019; Accepted: 17 September 2019; Published: 17 February 2020
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