Brush Rabbit (Sylvilagus bachmani)

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Brush Rabbit (Sylvilagus bachmani)

Citation:

Recovering the endangered riparian brush rabbit (Sylvilagus bachmani riparius): reproduction and growth in confinement and survival after translocation.

Author(s)
Williams, D.F., Kelly, P.A., Hamilton, L.P., Lloyd, M.R., Williams, E.A. and Youngblom, J.J.
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition Countries Error
Survival/ Mortality 0.22 In captivity Survival rate B Not Reported 196 San Joaquin River National
Wildlife Refuge 		Exposure Factor Datasets San Joaquin Born/raised in propagation facillity then released USA
Body Weight - Mean 272.2 g B Juvenile 340 San Joaquin River National
Wildlife Refuge 		Exposure Factor Datasets San Joaquin Born in propagation facillity USA 141.72
Survival/ Mortality 0.79 In captivity Survival rate B Not Reported 62 San Joaquin River National
Wildlife Refuge 		Exposure Factor Datasets San Joaquin Born/raised in propagation facillity USA
Survival/ Mortality 0.86 In captivity Survival rate B Not Reported 278 San Joaquin River National
Wildlife Refuge 		Exposure Factor Datasets San Joaquin Born/raised in propagation facillity USA
Survival/ Mortality 0.23 In captivity Survival rate B Not Reported 49 San Joaquin River National
Wildlife Refuge 		Exposure Factor Datasets San Joaquin Born/raised in propagation facillity then released USA
Citation:

Factors associated with survival of reintroduced riparian brush rabbits in California.

Author(s)
Hamilton, L.P., Kelly, P.A., Williams, D.F., Kelt, D.A. and Wittmer, H.U.
Issue
4
Volume
143
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition Countries Error
Survival/ Mortality 87 % mortality NR Not Reported 325 San Joaquin River National
Wildlife Refuge 		Exposure Factor Datasets San Joaquin Reintroduced, captive-bred USA NR
Citation:

Home range size and habitat selection of reintroduced Sylvilagus bachmani riparius.

Author(s)
Kelt, D.A., Kelly, P.A., Phillips, S.E. and Williams, D.F.
Issue
3
Volume
95
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition Countries
Home Range See citation Table 3 Overlap index B Not Reported 325 San Joaquin River National
Wildlife Refuge 		Exposure Factor Datasets San Joaquin Reintroduced, captive-bred USA
Citation:

Observations of the growth of young brush rabbits

Author(s)
Orr, Robert T.
Pages
298-302
Year
Volume
23
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Age-Specific
Body Weight - Mean 75.8 g Both Male and Female Juvenile 3 Golden Gate Park, San Francisco Exposure Factor Datasets 14 d
Body Weight - Mean 25.5 g Both Male and Female Juvenile 5 Golden Gate Park, San Francisco Exposure Factor Datasets 3 d
Citation:

Movement patterns of brush rabbits in northwestern California

Author(s)
Shields, Paul W.
Pages
381-386
Year
Volume
24
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Home Range 278 mean range diameter ft Male Adult 32 Humboldt Bay Exposure Factor Datasets Humboldt
Home Range 149 mean range diameter ft Female Adult 31 Humboldt Bay Exposure Factor Datasets Humboldt
Home Range 131 mean range diameter ft Male Juvenile 17 Humboldt Bay Exposure Factor Datasets Humboldt
Home Range 191 mean range diameter ft Female Juvenile 22 Humboldt Bay Exposure Factor Datasets Humboldt
Citation:

Home range and mobility of brush rabbits in California chaparral

Author(s)
Connell, Joseph H.
Pages
392-405
Year
Volume
35
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Home Range 115 average radii drawn from computed center of activity to capture points ft Male Adult 10 Berkeley Hills Exposure Factor Datasets 10
Home Range 69 average radii drawn from computed center of activity to capture points ft Female Adult 10 Berkeley Hills Exposure Factor Datasets 8
Population Density 0.9 #/acre Both Male and Female Both Adults and Juveniles 10 Berkeley Hills Exposure Factor Datasets
Population Density 2.3 #/acre Both Male and Female Both Adults and Juveniles 26 Berkeley Hills Exposure Factor Datasets
Time of Mating/ Laying Feb. - May time of breeding Male Adult Not Reported Berkeley Hills Exposure Factor Datasets
Longevity 3.5 longest recorded life span yr Both Male and Female Adult Not Reported Berkeley Hills Exposure Factor Datasets
Body Weight - Mean 583 g Male Adult 76 Berkeley Hills Exposure Factor Datasets 8
Body Weight - Mean 637 g Female Adult 101 Berkeley Hills Exposure Factor Datasets 7
Citation:

The rabbits of California

Author(s)
Orr, R.T.
Pages
1-227
Year
Volume
19
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Age at Sexual Maturity maturity based on presence of adult pelage mo Both Male and Female Adult Not Reported Exposure Factor Datasets
Clutch or Litter Size 3.5 young/litter Female Adult 11 Exposure Factor Datasets
Citation:

Sylvilagus bachmani

Author(s)
Chapman, Joseph A.
Pages
1-4
Year
Volume
34
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type
Time of Mating/ Laying review Both Male and Female Adult Not Reported Exposure Factor Datasets
Citation:

Reproduction of the brush rabbit in California

Author(s)
Mossman, Archie S.
Pages
177-184
Year
Volume
19
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Error
Time of Mating/ Laying Jan. - May time of mating Both Male and Female Adult Not Reported Exposure Factor Datasets Alameda, Contra Costa, Lake, Marin, Napa
Duration of Incubation or Gestation 27 d Female Adult Not Reported Exposure Factor Datasets Alameda, Contra Costa, Lake, Marin, Napa 3
Body Weight - Mean weight just prior to birth g Both Male and Female Embryo Not Reported Exposure Factor Datasets Alameda, Contra Costa, Lake, Marin, Napa
Clutch or Litter Size 4 young/litter Female Adult 14 Exposure Factor Datasets Alameda, Contra Costa, Lake, Marin, Napa
Clutches or Litters per year estimated by dividing breeding season length by gestation time litters/yr Female Adult Not Reported Exposure Factor Datasets Alameda, Contra Costa, Lake, Marin, Napa

Brush Rabbit (Sylvilagus bachmani ssp. ubericolor)

Citation:

The breeding biology of the brush rabbit population.

Author(s)
Chapman, Joseph A. and Amy L. Harman
Pages
816-823
Year
Volume
36
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size range of mean litter sizes over 2 yrs, based on embryo and placental scar counts young/litter Female Adult 9-15/yr E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets
Age at Sexual Maturity 1+ maturity based on amount of sperm in epididymides yr Male Adult Not Reported E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets
Clutches or Litters per year estimated by dividing length of breeding season by gestation period or time required to produce a litter litters/yr Female Adult Not Reported E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets
Time of Mating/ Laying Feb. - Aug. time of breeding Both Male and Female Adult 87 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets
Citation:

Orientation and homing of the brush rabbit (Sylvilagus bachmani)

Author(s)
Chapman, Joseph A.
Pages
686-699
Year
Volume
52
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Home Range 122.4 mean and range of one standard diameter, home range estimated by "center of activity" method ft Male Adult 12 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets 45.9 SD
Home Range 151.0 mean and range of one standard diameter, home range estimated by "center of activity" method ft Male Juvenile 9 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets 77.3 SD
Home Range 108.5 mean and range of one standard diameter, home range estimated by "center of activity" method ft Female Adult 24 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets 55.3 SD
Home Range 99.0 mean and range of one standard diameter, home range estimated by "center of activity" method ft Female Juvenile 14 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets 37.4 SD
Citation:

Organ weights and sexual dimorphism of the brush rabbit

Author(s)
Chapman, Joseph A.
Pages
453-455
Year
Volume
52
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Error
Body Weight - Mean 661.86 g Male Adult 23 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets 62.68 SD
Body Weight - Mean 661.47 g Female Adult 38 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets 66.73 SD
Body Weight - Mean 649.50 g Male Adult 22 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets 62.89 SD
Body Weight - Mean 732.25 g Female Adult 45 E.E. Wilson Game Management Area, Corvallis Exposure Factor Datasets 80.85 SD

Riparian Brush Rabbit (Sylvilagus bachmani ssp. riparius)

Citation:

Status review of the riparian brush rabbit (Sylvilagus bachmani riparius) in California

Author(s)
Larsen, Caryla J.
Pages
1-22
Publisher
California Department of Fish and Game, Nongame Bird and Mammal Section Report
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Home Range review reported home range for males was 957m2 for males and 244 m2 for females (from unpublished reports) Both Male and Female Not Reported Not Reported Caswell Memorial State Park Exposure Factor Datasets
Population Density review reported overall population density at carrying capacity is 3 animals/ha (from unpublished reports) Both Male and Female Not Reported Not Reported Caswell Memorial State Park Exposure Factor Datasets
Time of Mating/ Laying review reported breeding season occurs from January to May (from unpublished reports) Both Male and Female Adult Not Reported Caswell Memorial State Park Exposure Factor Datasets
Clutch or Litter Size review reported average of 9-16 young/female/yr (data source not specified) Female Adult Not Reported Exposure Factor Datasets
Clutches or Litters per year review reported 3-4 litters per season (data source not specified) Female Adult Not Reported Exposure Factor Datasets
Duration of Incubation or Gestation review reported gestation period was 27 d (data source unspecified) Female Adult Not Reported Exposure Factor Datasets

Audubon's Cottontail (Sylvilagus audubonii), Brush Rabbit (Sylvilagus bachmani)

Citation:

Home range - body mass allometry in rabbits and hares (Leporidae)

Author(s)
Swihart, Robert K.
Pages
139-148
Year
Volume
31
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Home Range review see citation for home range allometry for 14 species of lagomorphs Not Reported Adult Not Reported Exposure Factor Datasets
Home Range review see citation for home range allometry for 14 species of lagomorphs Not Reported Adult Not Reported Exposure Factor Datasets
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