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Dipsosaurus dorsalis

Citation:

Ontogenetic changes in diet, field metabolic rate, and water flux in the herbivorous lizard, Dipsosaurus dorsalis

Author(s)
Mautz, William J. and Kenneth A. Nagy
Pages
640-658
Year
Issue
6
Volume
60
Exposure Endpoint Type Endpoint Value Endpoint Description Error Range Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition Plant Species: Ambrosia dumosa (19.6%); Coldenia palmeri (10.1%); Dalea schottii (14.4%); Euphorbia polycarpa (4.5%); Geraea canescens (3.1%); Larrea divaricata (32.7%); Palafoxia linearis (11.7%); Rafinesquia neomexicana (1.6%); Schismus barbatus (0.7%);Arthropods (0.5%); Rodent feces (0.5%); Shed skin (0.6%) mean % of total dry matter stomach contents % Not Reported Adult Thousand Palms 6 Exposure Factor Datasets
Dietary Composition Plant Species: Ambrosia dumosa (15.4%); Coldenia palmeri (68.3%); Croton californica (2.8%); Dalea emoryi (5.9%); Dalea schottii (5.6%); Arthropods (1.3%); Gravel (0.8%) mean % of total dry matter stomach contents % Not Reported Hatchling Thousand Palms 12 Exposure Factor Datasets
Dietary Composition Plant Species: Ambrosia dumosa (6.1%); Coldenia palmeri (16.2%); Dalea emoryi (2.9%); Dalea schottii (26.7%); Geraea canescens (4.1%); Larrea divaricata (23.9%); Palafoxia linearis (3.4%); Rafinesquia neomexicana (0.4%); Unidentified vegetation (12.3%); Arthropods (3.0%) mean % of total dry matter stomach contents % Not Reported Hatchling Thousand Palms 5 Exposure Factor Datasets
Body Weight - Mean 3.5 average snout-vent length = 5.1 cm g Not Reported Hatchling Thousand Palms 5 - 52/sampling time Exposure Factor Datasets
Body Weight - Mean 60 average snout-vent length = 12.1 cm g Male Adult Thousand Palms 9-24/sampling time Exposure Factor Datasets
Body Weight - Mean 47 average snout-vent length = 11.2 cm g Female Adult Thousand Palms 4 - 26/sampling time Exposure Factor Datasets
Metabolic Rate range of average field metabolic rates (measured using doubly-labeled water) over 3 time periods 0.152 - 0.295 ml CO2/g/hr Not Reported Adult Thousand Palms 7-11/time period Exposure Factor Datasets
Metabolic Rate range of average field metabolic rates (measured using doubly-labeled water) over 3 time periods 0.350 - 0.380 ml CO2/g/hr Not Reported Hatchling Thousand Palms 7-9/time period Exposure Factor Datasets
Metabolic Rate 0.357 average field metabolic rate (measured using doubly-labeled water) 0.024 SE ml CO2/g/hr Not Reported Juvenile Thousand Palms 8 Exposure Factor Datasets
Metabolic Rate 0.110 (30C); 0.217 (35C); 0.238 (40C) average resting metabolic rate (oxygen consumption) measured at 30-40C ml O2/g/hr Not Reported Adult Thousand Palms 5 Exposure Factor Datasets
Metabolic Rate 0.180 (30C); 0.250 (35C); 0.279 (40C) average resting metabolic rate (oxygen consumption) measured at 30-40C ml O2/g/hr Not Reported Hatchling Thousand Palms 5 Exposure Factor Datasets
Food Ingestion Rate estimated feeding rate to support energy expenditure measured in field 15.2 - 17.1 mg dry food/g/d Not Reported Adult Thousand Palms 7-11/time period Exposure Factor Datasets
Food Ingestion Rate estimated feeding rate to support energy expenditure measured in field 19.1 - 28.5 mg dry food/g/d Not Reported Hatchling Thousand Palms 7-9/time period Exposure Factor Datasets
Citation:

Reproduction in the desert lizard, Dipsosaurus dorsalis

Author(s)
Mayhew, Wilbur W.
Pages
57-77
Year
Issue
1
Volume
27
Exposure Endpoint Type Endpoint Value Endpoint Description Range Units Sex Life Cycle Stage Location Sample Size Type
Time of Mating/ Laying Apr. - July time of potential breeding based on testis volume Male Adult Dale Dry Lake, Palm Springs and Algodones Dunes 365 Exposure Factor Datasets
Clutches or Litters per year 1 clutch/yr Female Adult Dale Dry Lake, Palm Springs and Algodones Dunes Not Reported Exposure Factor Datasets
Clutch or Litter Size based on eggs in oviduct 3 - 5 eggs/clutch Female Adult Dale Dry Lake, Palm Springs and Algodones Dunes Not Reported Exposure Factor Datasets
Duration of Incubation or Gestation 75 time from egg to hatching d Not Reported Hatchling Dale Dry Lake, Palm Springs and Algodones Dunes Not Reported Exposure Factor Datasets
Time of Hatching or Parturition Aug. Not Reported Hatchling Dale Dry Lake, Palm Springs and Algodones Dunes Not Reported Exposure Factor Datasets
Age at Sexual Maturity > 4.5 yr Both Male and Female Adult Dale Dry Lake, Palm Springs and Algodones Dunes Not Reported Exposure Factor Datasets
Citation:

Diet, behavior and water turnover in the desert iguana, Dipsosaurus dorsalis

Author(s)
Minnich, John E. and Vaughan H. Shoemaker
Pages
496-509
Year
Volume
84
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition see citation figure of % of food item in diet, based on dry weight of stomach contents % Not Reported Not Reported Palm Desert and Thousand Palms 11-14/season or location Exposure Factor Datasets
Food Ingestion Rate 50 rate estimated from intake of preformed water and water content of food for animals maintaining weight on natural vegetation g fresh wt food//kg/d Not Reported Not Reported Palm Desert and Thousand Palms Not Reported Exposure Factor Datasets
Citation:

Seasonal variation in weight-length relationships and fat body size in the desert iguana, Dipsosaurus dorsalis

Author(s)
Minnich, John E.
Pages
359-362
Year
Issue
2
Volume
1971
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Body Weight - Mean log weight = 0.010 SVL + 0.46 relationship between body weight (g) and snout-vent length (SVL, mm) g Female Adult Palm Desert Not Reported Exposure Factor Datasets
Body Weight - Mean log weight = 0.013 SVL + 0.24 relationship between body weight (g) and snout-vent length (SVL, mm) g Female Adult Palm Desert Not Reported Exposure Factor Datasets
Body Weight - Mean log weight = 0.011 SVL + 0.37 relationship between body weight (g) and snout-vent length (SVL, mm) g Male Adult Palm Desert Not Reported Exposure Factor Datasets
Body Weight - Mean log weight = 0.011 SVL + 0.46 relationship between body weight (g) and snout-vent length (SVL, mm) g Male Adult Palm Desert Not Reported Exposure Factor Datasets
Body Weight - Mean log weight = 0.011 SVL + 0.05 relationship between body weight (g) and snout-vent length (SVL, mm) g Not Reported Juvenile Palm Desert Not Reported Exposure Factor Datasets
Body Weight - Mean log weight = 0.017 SVL - 0.22 relationship between body weight (g) and snout-vent length (SVL, mm) g Not Reported Juvenile Palm Desert Not Reported Exposure Factor Datasets
Body Weight - Mean log weight = 0.017 SVL - 0.11 relationship between body weight (g) and snout-vent length (SVL, mm) g Not Reported Juvenile Palm Desert Not Reported Exposure Factor Datasets
Citation:

Hibernation in the desert iguana, Dipsosaurus dorsalis

Author(s)
Moberly, Walter R.
Pages
152-160
Year
Volume
36
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Time of Torpor or Hibernation Oct. - Mar. Not Reported Not Reported Palm Springs 95 Exposure Factor Datasets
Metabolic Rate see citation figure of resting oxygen consumption in hibernating and non-hibernating lizards at several body temperatures cc O2/g/hr Not Reported Not Reported Palm Springs 60 Exposure Factor Datasets
Citation:

The ecology of the desert iguana Dipsosaurus dorsalis

Author(s)
Norris, Kenneth S.
Pages
265-287
Year
Volume
34
Exposure Endpoint Type Endpoint Value Endpoint Description Range Units Sex Life Cycle Stage Location Sample Size Type
Clutch or Litter Size 3 - 8 eggs/clutch Female Adult Not Reported Exposure Factor Datasets
Time of Hatching or Parturition Aug. Not Reported Hatchling Not Reported Exposure Factor Datasets
Time of Mating/ Laying Apr. - May time of breeding Both Male and Female Adult Not Reported Exposure Factor Datasets
Time of Mating/ Laying June - July time of laying Female Adult Not Reported Exposure Factor Datasets
Dietary Composition Plants: Larrea divaricata (85%); Animal: Fecal pellets (10%); Bees (trace); Sand (trace) % volume of total stomach contents % Not Reported Not Reported Coachella Valley 17 Exposure Factor Datasets
Dietary Composition Plants: Dicoria canescens (45%); Flower heads of composite (10%); Coldenia sp. (5%); Trifolium sp. (20%); Animal: Grasshoppers (5%); Dipsosaurus (5%); Fecal pellets (5%) % volume of total stomach contents % Not Reported Not Reported Coachella Valley 12 Exposure Factor Datasets
Dietary Composition Plants: Dicoria canescens (50%); Flower heads of composite (25%); Dalea emoryi ? (10%); Coldenia sp. (10%) % volume of total stomach contents % Not Reported Not Reported Coachella Valley 8 Exposure Factor Datasets

Uta stansburiana

Citation:

Latitudinal variation in activity season mortality rates of the lizard Uta stansburiana

Author(s)
Wilson, Byron S.
Pages
393-414
Year
Issue
4
Volume
61
Exposure Endpoint Type Endpoint Description Range Units Sex Life Cycle Stage Location Sample Size Type
Population Density range of average densities estimated over 2 yrs 21.7 - 24.2 #/ha Not Reported Not Reported Chuckwalla Mountains (elev., 460m), [lat., 33^o37'N; long., 115^o18' W] Not Reported Exposure Factor Datasets
Population Density range of average densities estimated over 2 yrs 10.8 - 13.4 #/ha Not Reported Not Reported Panamint Valley (elev., 790m), [lat., 36^o20'N; long., 117^o30' W] Not Reported Exposure Factor Datasets
Population Density range of average densities estimated over 2 yrs 37.6 - 84.6 #/ha Not Reported Not Reported San Joaquin Valley (elev., 460m), [lat., 37^o38'N; long., 121^o29' W] Not Reported Exposure Factor Datasets
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