Ensatina (Ensatina eschscholtzii)

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Ensatina (Ensatina eschscholtzii)

Citation:

Amphibian populations in the terrestrial environment: Is there evidence of declines of terrestrial forest amphibians in northwestern California?

Author(s)
Welsh Jr, H.H., Fellers, G.M. and Lind, A.J.
Issue
41
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density See citation Table 1 21-150 ha Individuals captured NR Not Reported 2420 Exposure Factor Datasets USA
Citation:

Amphibians in managed, second-growth Douglas-fir forests.

Author(s)
Aubry, K.B.
Issue
4
Volume
64
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Type Countries
Population Density 33 >30 ha area Individuals captured NR Not Reported Pierce County, Washington Exposure Factor Datasets USA
Population Density 12 >30 ha area Individuals captured NR Not Reported Pierce County, Washington Exposure Factor Datasets USA
Population Density 34 >30 ha area Individuals captured NR Not Reported Pierce County, Washington Exposure Factor Datasets USA
Population Density 137 >30 ha area Individuals captured NR Not Reported Pierce County, Washington Exposure Factor Datasets USA
Citation:

Early development of Ensatina eschscholtzii: an amphibian with a large, yolky egg.

Author(s)
Collazo, A. and Keller, R.
Issue
6
Volume
1
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type California Counties Condition Countries
Time of Mating/ Laying See citation F Adult 19 Exposure Factor Datasets Lab Gravid USA
Citation:

Plethodontid Salamander Distributions in Managed Forest Headwaters in Western Oregon, USA.

Author(s)
Olson, D. H., & Kluber, M. R.
Issue
1
Volume
9
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Type Countries
Population Density See citation 46 ha Individuals captured NR Not Reported Green Peak forest, Benton County, N 44.3667, W
123.4583 		Exposure Factor Datasets USA
Citation:

Contribution to the natural history of the Plethodont salamander Ensatina eschscholtzii

Author(s)
Gnaedinger, Leslie McKay and Charles A. Reed
Pages
187-196
Year
Volume
1948
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Dietary Composition Crustacea (1); Arachnida (19); Diplopoda (5); Chilopoda (3); Hexapoda (32) number of each item in stomach contents Both Male and Female Both Adults and Juveniles 21 Portland, Multnomah County Exposure Factor Datasets
Body Weight - Mean 0.26 g Not Reported Juvenile 23 Portland, Multnomah County Exposure Factor Datasets
Body Weight - Mean 1.60 g Both Male and Female Juvenile 37 Portland, Multnomah County Exposure Factor Datasets
Body Weight - Mean 4.30 g Female Adult 11 Portland, Multnomah County Exposure Factor Datasets
Body Weight - Mean 2.80 g Male Adult 19 Portland, Multnomah County Exposure Factor Datasets
Citation:

Natural history of the salamanders of the plethodontid genus Ensatina

Author(s)
Stebbins, Robert C.
Pages
47-124
Year
Volume
54
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Dietary Composition sowbug (1); centipede (1); millipede (6); spiders (7); wood ticks (2); scavenger mite (1); solpugid (1); springtails (5); worker termites (15); hemipteran (1); fly (1); beetles (11); ants (2) number of each food item in stomachs # Not Reported Both Adults and Juveniles 8 Madelia Canyon Exposure Factor Datasets Los Angeles
Home Range 17.3 average distance moved between recaptures ft Female Adult 13 Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Home Range 32.8 average distance moved between recaptures ft Male Adult 17 Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Population Density estimated maximum density #/acre Both Male and Female Adult 25 Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Population Density estimated maximum density #/acre Both Male and Female Both Adults and Juveniles Not Reported Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Clutches or Litters per year 1 clutch/yr Female Adult Not Reported Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Clutch or Litter Size 11 # large ovarian eggs/female #/clutch Female Adult 26 Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Growth Rate see citation figure of growth rates based on changes in snout-vent length Both Male and Female Juvenile Not Reported Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Longevity range of oldest individuals recorded yrs Both Male and Female Adult 3 Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Age at Sexual Maturity yrs Both Male and Female Adult Not Reported Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Dietary Composition earthworm (1); sowbugs (14); amphipod (1); centipede (1); millipede (4); spiders (6); springtail (1); thysanuran (1); camel crickets (15); lepidopterous larva (1); dipteran (1); beetles (5); ant (1) number of each food item in stomachs # Not Reported Both Adults and Juveniles 27 Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Body Weight - Mean 6 g Both Male and Female Adult 9 Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Duration of Incubation or Gestation mo Female Adult Not Reported Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Time of Mating/ Laying late spring - early summer time of laying Female Adult Not Reported Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Time of Mating/ Laying Oct. - Mar. time of breeding Both Male and Female Adult Not Reported Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Time of Hatching or Parturition fall - early winter Not Reported Embryo Not Reported Pinehurst Madrone Grove Park Exposure Factor Datasets Contra Costa
Citation:

Comparative studies on the distribution and foods of plethodontid salamanders in the redwood region of northern California

Author(s)
Bury, R.B. and M. Martin
Pages
331-335
Year
Issue
4
Volume
7
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Dietary Composition Collembola (68%); Coleoptera adults (49%); Coleoptera larvae (11%); Diptera adults (14%); Diptera larvae (16%); Hymenoptera (22%); Acarina (19%); Araneae (57%); Diplopoda (38%); Isopoda (32%) % frequency of major food items % Not Reported Both Adults and Juveniles 37 1-2 mi WSW of Pepperwood, Humboldt Co. Exposure Factor Datasets Humboldt
Citation:

Oxygen consumption and activity in salamanders: Effect of body size and lunglessness

Author(s)
Feder, Martin E.
Pages
403-414
Year
Volume
202
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error Lab
Metabolic Rate 194.1 mean oxygen consumption following activity, measured at 25C ul O2/g/hr Not Reported Not Reported 5 Exposure Factor Datasets 14.3 SE Laboratory
Citation:

Patterns of growth and movements in a population of Ensatina eschscholtzii platensis (caudata: plethodontidae) in the Sierra Nevada, California

Author(s)
Staub, N.L., C.W. Brown and D.B. Wake
Pages
593-599
Year
Issue
4
Volume
29
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Error
Home Range 21.7 mean final distance from original site of capture m Male Adult Not Reported Calaveras Big Trees State Park (elev., 1400m) Exposure Factor Datasets Calaveras 2.1
Home Range 22.2 mean final distance from original site of capture m Female Adult Not Reported Calaveras Big Trees State Park (elev., 1400m) Exposure Factor Datasets Calaveras 2.8
Home Range range of distances moved from original site of capture m Not Reported Juvenile 7 Calaveras Big Trees State Park (elev., 1400m) Exposure Factor Datasets Calaveras
Growth Rate 0.005 changes in snout-vent length measured between recaptures (>1000d) mm/d Male Adult Not Reported Calaveras Big Trees State Park (elev., 1400m) Exposure Factor Datasets Calaveras 0.0049
Citation:

Foods of Plethodon larselli, Plethodon dunni and Ensatina eschscholtzi in the Columbia River Gorge, Multnomah County, Oregon

Author(s)
Altig, Ronald and Edmund D. Brodie, Jr.
Pages
226-228
Year
Volume
85
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Dietary Composition gastropoda (1.5%); annelida (1.5%); acarina (10.0%); araneida (17.7%); non-insect arthropods (16.9%); collembola (16.2%); hemiptera (8.5%); coleoptera (3.1%); lepidoptera (0.8%); hymenoptera (12.3%); diptera (10.0%); orthoptera (1.5%) % of total items in stomach contents; Ensatina size class >45 mm % Not Reported Not Reported <22 Multonmah County Exposure Factor Datasets
Dietary Composition acarina (32.5%); araneida (22.6%); non-insect arthropods (22.6%); collembola (16.1%); coleoptera (6.5%) % of total items in stomach contents; Ensatina size class <45 mm % Not Reported Not Reported <22 Multonmah County Exposure Factor Datasets
Citation:

Comparison of food habits of Ensatina eschscholtzii and Aneides lugubris

Author(s)
Zweifel, Richard G.
Pages
285-287
Year
Volume
1949
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Dietary Composition sow bugs (42%); centipedes (42%); spiders (60%); springtails (47%); beetles (36%); caterpillars (5%); ants (13%) % of stomach containing food item % Both Male and Female Both Adults and Juveniles 45 Dixie Canyon Exposure Factor Datasets Los Angeles

Pacific Giant Salamander (Dicamptodon tenebrosus), Ensatina (Ensatina eschscholtzii)

Citation:

Response of amphibians to clearcutting, burning, and glyphosate application in the Oregon Coast Range

Author(s)
Cole, Elizabeth C., William C. McComb, Michael Newton, Carol L. Chambers, J.P. Leeming
Pages
656-664
Year
Volume
61
Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
no effect capture rates between logged and burned units and the logged, burned and sprayed units during the year after spraying Not Reported Not Reported 3 units/treatment Oregon Coast Range Toxicity Factor Datasets
no effect capture rates between logged and burned units and the logged, burned and sprayed units during the year after spraying Not Reported Not Reported 3 units/treatment Oregon Coast Range Toxicity Factor Datasets

Ensatina (Ensatina eschscholtzii), Loggerhead Shrike (Lanius ludovicianus)

Citation:

Patterns of growth and movements in a population of Ensatina eschscholtzii platensis (caudata: plethodontidae) in the Sierra Nevada, California

Author(s)
Staub, N.L., C.W. Brown and D.B. Wake
Pages
593-599
Year
Issue
4
Volume
29
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Countries Error
Growth Rate 0.092 change in snout-vent length measured between recaptures (>1000d) mm/d Female Adult Not Reported Calaveras Big Trees State Park (elev., 1400m) Exposure Factor Datasets Calaveras USA 0.0071
Growth Rate 0.092 change in snout-vent length measured between recaptures (>1000d) mm/d Female Adult Not Reported Calaveras Big Trees State Park (elev., 1400m) Exposure Factor Datasets Calaveras USA 0.0071
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