Reproduction and survival of the desert tortoise (Scaptochelys agassizii) in Ivanpah Valley, California

Author(s)
Turner, Frederick B., Philip A. Medica and Craig L. Lyons
Year
Article Title
Reproduction and survival of the desert tortoise (Scaptochelys agassizii) in Ivanpah Valley, California
Volume
1984
Issue
4
Pages
811-820
Start Page Number
811
Final Page
820
Review

Datapoints

Displaying 1 - 5 of 5 datapoints.
Species: Desert Tortoise (Gopherus agassizi)
Exposure Endpoint Type Endpoint Description Endpoint Value Sample Size Units Life Cycle Stage Specific Location Range California Counties Type
Dietary Composition relative frequency of material in fresh scat, range for 2 sampling periods over 2 years grasses (3.6-33%); cacti (37.0-86.9%); annuals (5.0-18.6%); perennials other than cacti (0.8-2.7%); seeds (3.3-16.0%); other (0.4-2.6%) 189-195 scat samples/yr % Adult Ivanpah Valley [lat., 35^o23'N; long., 115^o18'W] San Bernardino Exposure Factor Datasets
Body Weight - Mean 2.29 51 animals kg Adult Ivanpah Valley [lat., 35^o23'N; long., 115^o18'W] 1.69-3.27 San Bernardino Exposure Factor Datasets
Body Weight - Mean 3.17 24 animals kg Adult Ivanpah Valley [lat., 35^o23'N; long., 115^o18'W] 2.10-4.34 San Bernardino Exposure Factor Datasets
Clutches or Litters per year range of means for 2 yr period 15-40 animals clutches/yr Adult Ivanpah Valley [lat., 35^o23'N; long., 115^o18'W] 1.10 - 1.60 San Bernardino Exposure Factor Datasets
Survival/ Mortality range of annual mortality rates from 1980 and 1981 Not Reported % Adult Ivanpah Valley [lat., 35^o23'N; long., 115^o18'W] 4.4 - 18.4 San Bernardino Exposure Factor Datasets
OEHHA California Office of Environmental Health Hazard Assessment