Locomotor behavior of wolf spiders in the paramo

We ran locomotor behavior trials in which we tested the relative velocity of female wolf spiders of Pardosa sp. (Araneae: Lycosidae). Spiders were experimentally subjected to cold or heat conditions, and we measured their velocity afterward. A portion of those females was carrying an external egg sac that represented up to ~1/3 of their body size. This allowed us to test the effect of carrying that object on their speed. We conducted this fieldwork in the highland paramo environment of Costa Rica.