Desert Iguana (Dipsosaurus dorsalis)

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Desert Iguana (Dipsosaurus dorsalis)

Citation:

Life history of the desert iguana, Dipsosaurus dorsalis

Author(s)
Krekorian, C. O'Neil
Pages
415-424
Year
Issue
4
Volume
40
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Age-Specific California Counties Error
Body Weight - Mean 5.2 g Both Male and Female Juvenile 37 Thousand Palms Exposure Factor Datasets 0-1 mo Riverside 1.0 SD
Population Density 332 #/ha Both Male and Female Both Adults and Juveniles Not Reported Thousand Palms Exposure Factor Datasets Riverside
Longevity longest lived individual in study yr Both Male and Female Adult Not Reported Thousand Palms Exposure Factor Datasets Riverside
Survival/ Mortality 73 annual survivorship % Not Reported Hatchling 37 marked Thousand Palms Exposure Factor Datasets 0-2 mo Riverside
Survival/ Mortality 43 average annual survivorship estimated for 2 yrs % Not Reported 27-65 marked/yr Thousand Palms Exposure Factor Datasets 7-9 mo Riverside
Survival/ Mortality 46 average annual survivorship estimated over 3 yrs % Not Reported 11-30 marked/yr Thousand Palms Exposure Factor Datasets 19-22 mo Riverside
Survival/ Mortality 60 average annual survivorship estimated for 4 yrs % Both Male and Female Adult 5-38 marked/yr Thousand Palms Exposure Factor Datasets > 31 mo Riverside
Age at Sexual Maturity mo Not Reported Adult Not Reported Thousand Palms Exposure Factor Datasets Riverside
Body Weight - Mean 9.2 g Not Reported Juvenile 65 Thousand Palms Exposure Factor Datasets 7-8 mo Riverside 2.1 SD
Body Weight - Mean 29.2 g Not Reported Juvenile 25 Thousand Palms Exposure Factor Datasets 19-20 mo Riverside 8.6 SD
Body Weight - Mean 46.0 g Both Male and Female Both Adults and Juveniles 11 Thousand Palms Exposure Factor Datasets 31-32 mo Riverside 13.4 SD
Body Weight - Mean 43.3 g Both Male and Female Adult 5 Thousand Palms Exposure Factor Datasets 43-44 mo Riverside 9.7 SD
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 Units Sex Life Cycle Stage Sample Size Location Type California Counties Error Lab
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 5 Thousand Palms Exposure Factor Datasets Riverside
Body Weight - Mean 3.5 average snout-vent length = 5.1 cm g Not Reported Hatchling 5 - 52/sampling time Thousand Palms Exposure Factor Datasets Riverside
Body Weight - Mean 60 average snout-vent length = 12.1 cm g Male Adult 9-24/sampling time Thousand Palms Exposure Factor Datasets Riverside
Body Weight - Mean 47 average snout-vent length = 11.2 cm g Female Adult 4 - 26/sampling time Thousand Palms Exposure Factor Datasets Riverside
Metabolic Rate range of average field metabolic rates (measured using doubly-labeled water) over 3 time periods ml CO2/g/hr Not Reported Adult 7-11/time period Thousand Palms Exposure Factor Datasets Riverside
Metabolic Rate range of average field metabolic rates (measured using doubly-labeled water) over 3 time periods ml CO2/g/hr Not Reported Hatchling 7-9/time period Thousand Palms Exposure Factor Datasets Riverside
Metabolic Rate 0.357 average field metabolic rate (measured using doubly-labeled water) ml CO2/g/hr Not Reported Juvenile 8 Thousand Palms Exposure Factor Datasets Riverside 0.024 SE
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 5 Thousand Palms Exposure Factor Datasets Laboratory
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 5 Thousand Palms Exposure Factor Datasets Laboratory
Food Ingestion Rate estimated feeding rate to support energy expenditure measured in field mg dry food/g/d Not Reported Adult 7-11/time period Thousand Palms Exposure Factor Datasets Riverside
Time of Hatching or Parturition Aug. Not Reported Hatchling Not Reported Thousand Palms Exposure Factor Datasets Riverside
Food Ingestion Rate estimated feeding rate to support energy expenditure measured in field mg dry food/g/d Not Reported Hatchling 7-9/time period Thousand Palms Exposure Factor Datasets Riverside
Growth Rate g/d Not Reported Hatchling 5 - 52/sampling time Thousand Palms Exposure Factor Datasets Riverside
Time of Torpor or Hibernation Oct. - Mar. Not Reported Not Reported Not Reported Thousand Palms Exposure Factor Datasets Riverside
Time of Hatching or Parturition Aug. Not Reported Hatchling Not Reported Thousand Palms Exposure Factor Datasets Riverside
Dietary Composition Plant Species: Ambrosia dumosa (4.8%); Coldenia palmeri (27.6%); Croton californica (2.8%); Dalea emoryi (24.7%); Dalea schottii (13.2%); Dicoria canescens (22.5%); Arthropods (1.3%); Rodent feces (2.4%); Gravel (0.6%) mean % of total dry matter stomach contents % Not Reported Adult 7 Thousand Palms Exposure Factor Datasets Riverside
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 6 Thousand Palms Exposure Factor Datasets Riverside
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 12 Thousand Palms Exposure Factor Datasets Riverside
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 Units Sex Life Cycle Stage Sample Size Location Type California Counties
Age at Sexual Maturity > 4.5 yr Both Male and Female Adult Not Reported Dale Dry Lake, Palm Springs and Algodones Dunes Exposure Factor Datasets Imperial, Riverside, San Bernardino
Time of Mating/ Laying Apr. - July time of potential breeding based on testis volume Male Adult 365 Dale Dry Lake, Palm Springs and Algodones Dunes Exposure Factor Datasets Imperial, Riverside, San Bernardino
Clutches or Litters per year 1 clutch/yr Female Adult Not Reported Dale Dry Lake, Palm Springs and Algodones Dunes Exposure Factor Datasets Imperial, Riverside, San Bernardino
Clutch or Litter Size based on eggs in oviduct eggs/clutch Female Adult Not Reported Dale Dry Lake, Palm Springs and Algodones Dunes Exposure Factor Datasets Imperial, Riverside, San Bernardino
Duration of Incubation or Gestation 75 time from egg to hatching d Not Reported Hatchling Not Reported Dale Dry Lake, Palm Springs and Algodones Dunes Exposure Factor Datasets Imperial, Riverside, San Bernardino
Time of Hatching or Parturition Aug. Not Reported Hatchling Not Reported Dale Dry Lake, Palm Springs and Algodones Dunes Exposure Factor Datasets Imperial, Riverside, San Bernardino
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 Units Sex Life Cycle Stage Sample Size Location Type California Counties
Dietary Composition Plants: Larrea divaricata (85%); Animal: Fecal pellets (10%); Bees (trace); Sand (trace) % volume of total stomach contents % Not Reported Not Reported 17 Coachella Valley Exposure Factor Datasets Riverside
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 12 Coachella Valley Exposure Factor Datasets Riverside
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 8 Coachella Valley Exposure Factor Datasets Riverside
Clutch or Litter Size 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
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 Sample Size Location Type California Counties
Dietary Composition see citation figure of % of food item in diet, based on dry weight of stomach contents % Not Reported Not Reported 11-14/season or location Palm Desert and Thousand Palms Exposure Factor Datasets Riverside
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 Not Reported Palm Desert and Thousand Palms Exposure Factor Datasets Riverside
Citation:

Relationship of space use to population density in an herbivorus lizard

Author(s)
Alberts, Allison C.
Pages
469-479
Year
Issue
4
Volume
49
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density range over 3 yrs at 3 sites #/ha Both Male and Female Adult 96 marked lizards Coachella Valley Exposure Factor Datasets Riverside
Home Range minimum area versus probability estimate for 3 sites; estimate of area encompassing 95% of total space utilization m2 Male Adult Not Reported Coachella Valley Exposure Factor Datasets Riverside
Home Range minimum area versus probability estimates for 3 sites; estimate of area encompassing 95% of total space utilization m2 Female Adult Not Reported Coachella Valley Exposure Factor Datasets Riverside
Body Weight - Mean range of averages for 3 sites g Male Adult Not Reported Coachella Valley Exposure Factor Datasets Riverside
Body Weight - Mean range of averages for 3 sites g Female Adult Not Reported Coachella Valley Exposure Factor Datasets Riverside
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 Sample Size Location 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 Not Reported Palm Desert 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 Not Reported Palm Desert 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 Not Reported Palm Desert 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 Not Reported Palm Desert 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 Not Reported Palm Desert 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 Not Reported Palm Desert 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 Not Reported Palm Desert Exposure Factor Datasets
Citation:

Notes on Dipsosaurus dorsalis in Arizona

Author(s)
Parker, William S.
Pages
226-229
Year
Volume
28
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Time of Torpor or Hibernation Sept. - Mar. Not Reported Adult Not Reported Phoenix South Mountain, Maricopa County Exposure Factor Datasets
Growth Rate 2.7 growth rate based on changes in snout-vent length (48-73 mm) mm/mo Not Reported Juvenile 22 Phoenix South Mountain, Maricopa County Exposure Factor Datasets
Population Density #/ha Not Reported Juvenile 11-20 Phoenix South Mountain, Maricopa County Exposure Factor Datasets
Age at Sexual Maturity 45 minimum adult size at first reproduction, estimated from growth rate mo Not Reported Adult 22 Phoenix South Mountain, Maricopa County Exposure Factor Datasets
Citation:

Aerobic and anaerobic metabolism during activity in the lizard Dipsosaurus dorsalis

Author(s)
Bennett, Albert F. and William R. Dawson
Pages
289-299
Year
Volume
81
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Lab
Body Weight - Mean 35.2 g Both Male and Female Adult 30 animals originally captured at Riverside County, CA Exposure Factor Datasets Laboratory
Metabolic Rate see citation figure of standard and maximal activity metabolic rates at 25-45C cm3 O2/g/hr Both Male and Female Adult 30 Exposure Factor Datasets Laboratory
Citation:

Physiological ecology of desert iguana (Dipsosaurus dorsalis) eggs: temperature and water relations

Author(s)
Muth, Allan
Pages
1335-1343
Year
Volume
61
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Lab
Duration of Incubation or Gestation 86 incubation period at 28C d Not Reported Embryo 12 Exposure Factor Datasets Laboratory
Duration of Incubation or Gestation 44 incubation period at 36C d Not Reported Embryo 60 Exposure Factor Datasets Laboratory
Citation:

Home range size and overlap and their relationship to food abundance in the desert iguana, Dipsosaurus dorsalis

Author(s)
Krekorian, C. O'Neil
Pages
405-412
Year
Issue
4
Volume
32
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Home Range 1462 home range estimated using the convex polygon method m2 Male Adult 20 Thousand Palms Exposure Factor Datasets Riverside
Home Range 1558 home range estimated using the convex polygon method m2 Female Adult 5 Thousand Palms Exposure Factor Datasets Riverside
Citation:

Reproduction and estrogen-induced vitellogenesis in Dipsosaurus dorsalis

Author(s)
Gerstle, Jinny F. and Ian P. Callard
Pages
791-801
Year
Volume
42
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Body Weight - Mean range of means during 5 stages of reproductive cycle g Female Adult 7-15/stage Southwest Herpetlogical Research and Sales, Calimesa Exposure Factor Datasets
Citation:

Seasonal variations in activity, aerobic energetic capacities, and plasma thryoid hormones (T3 and T4) in an iguanid lizard

Author(s)
John-Alder, Henry B.
Pages
409-419
Year
Volume
154
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Lab
Metabolic Rate range of standard metabolic rates (oxygen consumption) measured at 40C, predicted for 50 g animal, at 5 collection dates ml O2/g/hr Both Male and Female Adult 11-21/date Exposure Factor Datasets Laboratory
Metabolic Rate range of maximal rates of oxygen consumption measured at 40C, predicted for 50 g animal, at 5 collection dates ml O2/g/hr Both Male and Female Adult 11-21/date Exposure Factor Datasets Laboratory
Citation:

Population density of the desert iguana, Dipsosaurus dorsalis (Reptilia: Iguanidae) in southern California

Author(s)
Krekorian, C. O'Neil
Pages
268-271
Year
Issue
1
Volume
1983
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density 450 #/ha Not Reported Both Adults and Juveniles 45 lizards/10 quadrants (100m2) Thousand Palms Exposure Factor Datasets Riverside
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 Sample Size Location Type California Counties Lab
Time of Torpor or Hibernation Oct. - Mar. Not Reported Not Reported 95 Palm Springs Exposure Factor Datasets Riverside
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 60 Palm Springs Exposure Factor Datasets Laboratory
Citation:

Dipsosaurus (Hallowell), Desert Iguana

Author(s)
Hulse, Arthur C.
Pages
1-6
Year
Volume
542
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type
Metabolic Rate review Not Reported Not Reported Not Reported Exposure Factor Datasets
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