Table 1 Variables collected from cases included in our systematic review
From: External transmitter attachment in snakes: a systematic review of methods, efficacy, and impacts
Variable | Notes |
|---|---|
Species | Species studied |
Morphometrics | Average mass and snout-vent length (SVL) across study animals. If data were unreported, we substituted mean mass and SVL data from external sources (Table S2, Appendix 2) |
Sample size | Number of study animals |
Transmitter mass | Transmitter package mass, inclusive of attachment device/material (when reported) |
Transmitter-snake mass ratio (TSR) | Transmitter mass / snake mass |
Transmitter type | Radio or GPS |
Mean duration | Average number of days individuals were tracked before transmitters died or were removed |
Mean number fixes | Average number of fixes per study animal. If data were unreported, used mean duration (assumes animals were tracked daily) |
Attachment | Noted materials and attachment methods (e.g., tape, glue, thread, subdermal stitch, or combinations thereof) |
Longitudinal attachment position | Anterior body, posterior body, tail, or rattle (Crotalus, Sistrurus) |
Transverse attachment position | Dorsal or ventral |
Effect specification | Whether authors evaluated health and/or behavioral effects of transmitters |
Effect presence/absence | Whether authors observed any health and/or behavioral effects of transmitters |
Type of effect(s) | What types of health/behavioral effects were observed (abrasions, tail injuries, restricted movement, etc.) |