Species

Filter by Species

Filter by Toxicity Endpoint Type

Filter by Exposure Endpoint Type

Filter by Chemical

Filter by Location

Displaying 1 - 40 of 43 datapoints
Export to CSV

Vulpes macrotis ssp. mutica

Citation:

Use of human-derived food items by urban kit foxes

Author(s)
Cypher, Brian L. and Gregory D. Warrick
Pages
34-37
Year
Volume
29
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition human derived food items (12.2%), ground squirrel (67.8%), pocket gopher (3.9%), unident. rodent (5.0%), leporid (5.0%), bird (12.2%), insect (23.3%), other (2.2%) frequency of occurrence in scats % Not Reported Not Reported Bakersfield, CA 180 scats Exposure Factor Datasets
Citation:

Sources and rates of San Joaquin kit fox mortality in western Kern County, California

Author(s)
Disney, Michele and Linda K. Spiegel
Pages
73-82
Year
Volume
28
Exposure Endpoint Type Endpoint Description Range Sex Life Cycle Stage Location Sample Size Type
Survival/ Mortality Survival rates of radiocollared foxes for 1990, 1991 0.4-.63 Both Male and Female Both Adults and Juveniles extreme southern San Joaquin Valley 57 foxes Exposure Factor Datasets
Survival/ Mortality Survival rates of radiocollared foxes for 1990, 1991 0.55-0.57 Male Adult extreme southern San Joaquin Valley 25 foxes Exposure Factor Datasets
Survival/ Mortality Survival rates of radiocollared foxes for 1990, 1991 0.27-0.86 Female Adult extreme southern San Joaquin Valley 32 foxes Exposure Factor Datasets
Citation:

Food of the San Joaquin kit fox

Author(s)
Hawbecker, Albert C.
Pages
499
Year
Issue
4
Volume
24
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition Dipodomus ingens (17%), Dipodomys sp. (14%), D. heermanni (10%), Unident. rodents (6%), Oedaleonotus enigma (66%), Pocalta ursinus (5%), Coniontis sp. (1%), Stenopelmatus (9%), grass (74%) Percent occurrence in scats % Not Reported Not Reported 6 mi. east of Panoche 74 scats (1 den) Exposure Factor Datasets
Citation:

San Joaquin kit fox: its distribution and abundance

Author(s)
Laughrin, Lyndal
Pages
20
Publisher
California Department of Fish and Game, Wildlife Management Branch Administrative Report
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Type
Dietary Composition Review Not Reported Not Reported Not Reported Exposure Factor Datasets
Population Density 1 estimated average density based on censuses and literature values fox/2.8 mi2 Both Male and Female Adult 108 dens Exposure Factor Datasets
Citation:

Life history of the San Joaquin kit fox

Author(s)
Morrell, Stephen
Pages
162-174
Year
Issue
3
Volume
58
Exposure Endpoint Type Endpoint Value Endpoint Description Range Units Sex Life Cycle Stage Location Sample Size Type
Home Range approximate range of individual foxes 1-2 mi2 Both Male and Female Adult Buena Vista Valley 12 foxes Exposure Factor Datasets
Body Weight - Mean range of monthly averages (Jan.-Dec.) 3.8-5.5 lbs Male Adult Buena Vista Valley 1-4 foxes/month Exposure Factor Datasets
Body Weight - Mean range of monthly averages (Jan.-Dec.) 4.4-5.6 lbs Female Adult Buena Vista Valley 1-5 foxes/month Exposure Factor Datasets
Growth Rate growth rate observed in repeatedly trapped pups 0.75-1 lb/month Both Male and Female Pup Buena Vista Valley Not Reported Exposure Factor Datasets
Clutch or Litter Size 3-5 pups Female Adult Buena Vista Valley 5 litters Exposure Factor Datasets
Time of Hatching or Parturition February-March Female Adult Buena Vista Valley Not Reported Exposure Factor Datasets
Dietary Composition Kangaroo rats (80.7%), rabbits (46.2%), squirrels (9.6%), cottontails (5.8%), pocket mouse (1.9%), unident. insects (59.6%), scorpions (17.3%), Jerusalem crickets (13.5%), insect larvae (11.5%), ants (9.6%), grasshoppers (5.8%), beetles (3.8%), spiders (1.9%) frequency of occurrence in scat analyses % Both Male and Female Not Reported 52 scat groups Exposure Factor Datasets
Citation:

Selenium accumulation and ecology of the San Joaquin kit fox in the Kesterson National Wildlife Refuge Area

Author(s)
Paveglio, Fred L and Steven D. Clifton
Publisher
U.S. Fish and Wildlife Service, San Luis Wildlife Refuge
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition insects (1.3%), Hermann's kangaroo rat (19.6%), California vole (31.5%), deer mouse (14.4%), California ground squirrel (24.4%), Audubon's cottontail (12.0%), unident. plant material (0.7%) relative composition of prey remains in scat % Both Male and Female Both Adults and Juveniles Kesterson National Wildlife Refuge 25 scats Exposure Factor Datasets
Citation:

Assessment of abundance of San Joaquin kit foxes by spotlight surveys

Author(s)
Ralls, Katherine and L. Lee Eberhardt
Pages
65-73
Year
Issue
1
Volume
78
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Type
Population Density see citation figures showing seasonal abundance and density counts Both Male and Female Both Adults and Juveniles 1,239 surveys (dry season); 883 surveys (wet season) Exposure Factor Datasets
Citation:

Home range characteristics of the San Joaquin kit fox in western Kern County, California

Author(s)
Spiegel, Linda K. and Michael Bradbury
Pages
83-92
Year
Volume
28
Exposure Endpoint Type Endpoint Value Endpoint Description Error Range Units Sex Life Cycle Stage Location Sample Size Type
Home Range 1.61 denning range, based on observations of marked individuals at dens 0.20 SE km2 Both Male and Female Adult south San Joaquin Valley 26 Exposure Factor Datasets
Home Range 5.82 nocturnal range, based on noctural locations of marked individuals 0.45 SE km2 Both Male and Female Adult south San Joaquin Valley 26 Exposure Factor Datasets
Home Range 6.13 based on all observations of marked individuals 0.45 SE 1.69-11.18 km2 Both Male and Female Adult Exposure Factor Datasets
Citation:

Conservation of the endangered San Joaquin kit fox, Vulpes macrotis mutica, on the Naval Petroleum Reserves, California

Author(s)
O'Farrell, T.P.
Pages
207-208
Year
Volume
172
Exposure Endpoint Type Endpoint Value Endpoint Description Range Units Sex Life Cycle Stage Location Sample Size Type
Population Density denning density 1 den/28 ha - 1 den/37 ha Both Male and Female Adult Elk Hills Naval and Buena Vista Petroleum Reserves 1010 dens Exposure Factor Datasets
Population Density adult density 2-2.8 #/260 ha Both Male and Female Adult Elk Hills Naval and Buena Vista Petroleum Reserves 361 foxes Exposure Factor Datasets
Age at Sexual Maturity 22 mo Both Male and Female Adult Elk Hills Naval and Buena Vista Petroleum Reserves Not Reported Exposure Factor Datasets
Time of Mating/ Laying December time of breeding Both Male and Female Adult Elk Hills Naval and Buena Vista Petroleum Reserves Not Reported Exposure Factor Datasets
Time of Hatching or Parturition early February Female Adult Elk Hills Naval and Buena Vista Petroleum Reserves Not Reported Exposure Factor Datasets
Clutch or Litter Size 4.1 mean litter size pups Female Adult Elk Hills Naval and Buena Vista Petroleum Reserves Not Reported Exposure Factor Datasets
Citation:

Reproduction and spacing patterns of kit foxes relative to changing prey availability

Author(s)
White, Patrick J. and Katherine Ralls
Pages
861-867
Year
Issue
4
Volume
57
Exposure Endpoint Type Endpoint Value Endpoint Description Error Range Units Sex Life Cycle Stage Location Sample Size Type
Population Density minimum densities of foxes in study area over three years 1 fox /4.1 km2 - 1 fox / 6.5 km2 Both Male and Female Adult Carrizo Plain Natural Area 15-22 foxes/year Exposure Factor Datasets
Clutch or Litter Size 1-3 pups Female Adult Carrizo Plain Natural Area 4 foxes Exposure Factor Datasets
Home Range 11.6 individual home range size 0.9 SE km2 Both Male and Female Adult Carrizo Plain Natural Area 21 foxes Exposure Factor Datasets
Citation:

Functional and numerical responses of kit foxes to a short-term decline in mammalian prey

Author(s)
White, Patrick J., Callie A. Vanderbilt White and Katherine Ralls
Pages
370-376
Year
Issue
2
Volume
77
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition deer mice (10.8%), kangaroo rats (8.4%), pocket gophers (2.9%), pocket mice (20.0%), woodrats (0.6%), ground squirrels (6.4%), birds (7.5%), insects (33.5%), leporids (4.7%), reptiles (2.0%), percentage occurrence of prey types in feces % Both Male and Female Adult Carrizo Plain Natural Area 834 feces Exposure Factor Datasets
Citation:

Distribution and habitat requirements of the San Joaquin kit fox in the northern extreme of their range

Author(s)
Orloff, Susan, Frank Hall and Linda Spiegel
Pages
60-70
Year
Volume
22
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition Jerusalem crickets (27%), unident. birds (2%), rabbits (3%), California ground squirrel (35%), pocket mice (2%), western harvest mice (17%), Peromyscus sp. (13%) percent volume of total prey items in scat % Both Male and Female Not Reported Bethany Reservoir 10 scats Exposure Factor Datasets
Dietary Composition Jerusalem crickets (1%), unident. reptiles (1%), unident. birds (1%), rabbits (5%), California ground squirrel (62%), pocket mice (5%), western harvest mice (10%), Peromyscus sp. (11%) percent volume of total prey items in scat % Both Male and Female Not Reported Bethany Reservoir 10 scats Exposure Factor Datasets
Dietary Composition Jerusalem crickets (20%), unident. insects (4%), unident. birds (10%), desert cottontail (1%), rabbits (5%), California ground squirrel (27%), pocket mice (13%), western harvest mice (9%), Peromyscus sp. (9%), unident. cricetid rodents (5%) percent volume of total prey items in scat % Both Male and Female Not Reported Bethany Reservoir 10 scats Exposure Factor Datasets
Dietary Composition unident. vegetation (4%), California ground squirrel (83%), California pocket mice (2%), Peromyscus sp. (5%), unident. cricetid rodents (5%) percent volume of total prey items in scat % Both Male and Female Not Reported Bethany Reservoir 10 scats Exposure Factor Datasets
Survival/ Mortality 80 % Both Male and Female Juvenile Bethany Reservoir 5 foxes Exposure Factor Datasets
Survival/ Mortality 67 % Both Male and Female Adult Bethany Reservoir 3 foxes Exposure Factor Datasets
Citation:

Prey abundance and food habits of San Joaquin kit fox (Vulpes velox macrotis) at Camp Roberts Army National Guard Training Site, California

Author(s)
Logan, Christopher G., William H. Berry, William G. Standley and Thomas T. Kato
Pages
21
Publisher
EG and G Energy Measurements, Inc., Operations Report No. 10617-2158
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition Spermophilus beecheyi (35%), soluble material (16.6%), grasshoppers/crickets (12.9%), lagomorphs (12.2%), kangaroo rats (9.1%), miscellaneous (10.2%), deer mice/wood rats (7.7%), birds (5.2%), beetles/weevils (3.5%), vegetation (2.8%), snakes (2.0%), pocket mice (0.8%), pocket gophers (0.5%), lizards (0.2%) frequency of occurrence of prey items found in scat % Both Male and Female Both Adults and Juveniles Camp Roberts 649 scats Exposure Factor Datasets
Citation:

Diet of the San Joaquin kit fox, Vulpes macrotis mutica, on Naval Petroleum Reserve #1, Kern County, California, 1980-1984

Author(s)
Scrivner, Jerry H., Thomas P. O'Farrell and Thomas T. Kato
Pages
26
Publisher
EG&G Energy Measurements, EGG 10282-2168
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition lagomorphs (73.3%), kangaroo rats (13.1%), San Joaquin antelope ground squirrel (2.9%), San Joaquin kit fox (2.8%), Cricetidinae (1.3%), Heteromyidae (0.8%), San Joaquin pocket mouse (0.7%), California ground squirrel (0.6%), southern grasshopper mouse (0.5%), sheep (0.5%), Botta pocket gopher (0.3%), birds (1.4%), snakes (1.2%), lizards (0.1%), grasshoppers and crickets (6.2%), beetles (1.0%), arthropods (0.2%), grass (1.7%), soluble material (5.2%), other (9.1%) frequency of occurrence of food items found in scat % Both Male and Female Both Adults and Juveniles Naval Petroleum Reserve #1 1430 scats Exposure Factor Datasets
Citation:

Competetive interactions between coyotes and San Joaquin kit foxes

Author(s)
Cypher, Brian L. and Kenneth A. Spencer
Pages
204-214
Year
Issue
1
Volume
79
Exposure Endpoint Type Endpoint Value Endpoint Description Error Range Units Sex Life Cycle Stage Location Sample Size Type
Dietary Composition see figure bar graph showing use of leporids, rodents, insects and other food items over 6 years Not Reported Not Reported Naval Petroleum Reserves in California 449 scat samples Exposure Factor Datasets
Survival/ Mortality 61.0 mean annual mortality rate over 13 years 5.2 SE 30.0-84.0 % Not Reported Adult Naval Petroleum Reserves in California 306 foxes Exposure Factor Datasets
Survival/ Mortality 79.8 mean annual mortality rate over 13 years 4.5 SE 50.0-100 % Not Reported Juvenile Naval Petroleum Reserves in California 177 foxes Exposure Factor Datasets
Download CSV

Comment

Please let us know if the information on this page is helpful for you. Enter your comment and leave your email address if you would like to receive a response. Thank you!
OEHHA is subject to the California Public Records Act and other laws that require the release of certain information upon request. If you provide comments, please be aware that your name, address and e-mail may be available to third parties. In addition, all public comments will be posted on our web site upon the close of the comment period.
OEHHA California Office of Environmental Health Hazard Assessment