Skip to main content

Table 1 Behavioral response variables measured from experimental trials

From: Bigger doesn’t mean bolder: behavioral variation of four wild rodent species to novelty and predation risk following a fast-slow continuum

Response Unit measured Definition
Exploringa Time (s.) Locomotive activity, investigation of the arena and objects, climbing
Foraginga Time (s.) The subject consumed and/ or searched for seeds in the foraging tray
Motionlessb Time (s.) The subject remained stationary (except for breathing); body remained stationary with occasional head scanning
Concealingb Time (s.) The subject was in the hide (at least 75% of the body was concealed); the head was slightly exposed from the hide
Grooming Time (s.) The subject was grooming, e.g. licking or rubbing
Consumptionc,d Weight (g) The amount of seeds consumed (± 0.1 g). Calculated by subtracting the remaining amount from the initial 5.0 g
Foraging eventsd No. occurrences The number of events of foraging of the test subject
Latency to foraged Time (s.) The amount of time before the subject started foraging
Jumpingd No. occurrences The subject actively jumped; all four paws left the base of the arena
Contact No. occurrences The subject investigated or had tactile contact with the treatment apparatus, e.g. sniffing or biting
  1. Notes: seconds (s.), number of (no.) occurrences, grams (g). Response variables adapted from [29, 49, 50]. a refers to behaviors included in the ‘Non-defensive’ behavioral category. b refers to behaviors included in the ‘Defensive’ behavioral category. c this behavior was transformed to Consumption ratio, by calculating the food eaten proportional to body weight and expressed as a percentage. d indicates behaviors removed from the focus of the main text, see Supplementary material (Table S4, Fig. S1, Figure S2) for results. For a complete list of the means and standard errors of all the response variables, please refer to Supplementary material (Table S1 and S2)