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Figure 1

From: Invasive brown treesnakes (Boiga irregularis) move short distances and have small activity areas in a high prey environment

Figure 1

Movement patterns (average linear distance moved per day) on Guam of four radiotracked BTS in this study. Within each plot, we have indicated times when a prey bulge (indicative of prey consumption) was observed (red arrows) and, for females, estimated onset of vitellogenesis (blue arrows, estimated using follicular growth data obtained from Mathies et al.33). At the top of each movement plot is each snake’s % change in body mass (relative to mass at the time of transmitter implantation, precise value indicated as white text within bar), their activity area (minimum convex polygon [MCP] method) within the Habitat Management Unit (HMU, perimeter of HMU indicated as black outline), and their size in snout-vent length (SVL, relative size indicated by black snake silhouette with precise numerical value in mm above).

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