Crotalus catalinensis

Number of Pages: 4Integrative BiologyGeological Science

Crotalus tortugensis

Number of Pages: 5Integrative BiologyGeological Science

Crotalus ruber

Number of Pages: 17Integrative BiologyGeological Science

Crotalus enyo

Number of Pages: 6Integrative BiologyGeological Science

Gambelia copeii

Number of Pages: 8Integrative BiologyGeological Science

Elgaria panamintina

Number of Pages: 4Integrative BiologyGeological Science

Sauromalus hispidus

Number of Pages: 4Integrative BiologyGeological Science

Seasonal variation in population location of the Galapagos tortoise, geochelone elephantopus vandenburghi, on Volcan Alcedo, Isabela Island, Galapagos archipelago

Twenty tortoises, 10 adult males and 10 adult females, were tagged with radio transmitters. Numbers were painted on each carapace to aid in visual sighting. The tortoises were released, and their movement was monitored over a one year period. The percent recovery of tagged tortoises along with the numbers of non-tagged tortoises counted in sections of the study area, were used to determine tortoise population movement and location. Weather data were collected and observations were made concerning the vegetation. These observations were compared with those from previous studies to see what impact seasonal climatic conditions and food availability had on tortoise movement. Population movement does occur on Volcan Alcedo. This movement is dependent on seasonal weather patterns and food availability

Chionactis occipitalis

Number of Pages: 12Integrative BiologyGeological Science

Chionactis palarostris

Number of Pages: 5Integrative BiologyGeological Science