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California Sea Lion (Zalophus californianus)

Citation:

Heavy metal and chlorinated hydrocarbon residues in California sea lions (Zalophus californianus californianus)

Author(s)
Buhler, D. R., R. R. Clayes and B. R. Mate
Pages
2391-2397
Year
Volume
32
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type Age-Specific
CADMIUM COMPOUNDS, DDT (Technical Grade Mixture), MERCURY COMPOUNDS, POLYCHLORINATED BIPHENYLS increase incidence of kidney histopathological lesions in "sick" or dead animals compared to "healthy" animals, consistent with diagnosis of leptospirosis Male Adult 2-8/group Toxicity Factor Datasets 5 - 9 yr

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

Deer Mouse (Peromyscus maniculatus)

Citation:

Insecticide effects on small mammals: influence of vegetation structure and diet

Author(s)
Schauber, Eric M., W. Daniel Edge and Jerry O. Wolff
Pages
143-157
Year
Issue
1
Volume
7
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
AZINPHOS-METHYL (GUTHION) decrease @ 3.61 kg/ha population density in enclosures with mowed alfalfa Both Male and Female Both Adults and Juveniles 0-30 animals/enclosure; 4 enclosures/dose Hyslop Crop Science Field Laboratory, Corvallis Toxicity Factor Datasets
Citation:

Home range relationships of three rodent species in southeast Oregon

Author(s)
Feldhamer, George A.
Pages
50-57
Year
Volume
60
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Error
Home Range 371.7 m2 Male Not Reported 17 sagebrush habitat, Malheur National Wildlife Refuge Exposure Factor Datasets 126.7 - 571.8 (2-sigma)
Home Range 372.1 m2 Male Not Reported 29 greasewood habitat, Malheur National Wildlife Refuge Exposure Factor Datasets 108.5 - 603.3 (2-sigma)
Home Range 298.6 m2 Female Not Reported 18 greasewood habitat, Malheur National Wildlife Refuge Exposure Factor Datasets 179.2 - 640.5 (2-sigma)
Home Range 392.0 m2 Female Not Reported 8 sagebrush habitat, Malheur National Wildlife Refuge Exposure Factor Datasets 173.2 - 573.3 (2-sigma)

American Kestrel (Falco sparverius)

Citation:

Birds of prey, DDT, and tussock moths in Pacific Northwest

Author(s)
Henny, Charles J.
Pages
397-411
Year
Volume
42
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
DDT (Technical Grade Mixture) 6.42 ppm mean DDT concentration in eggs 0-0.8 mi from sprayed area Both Male and Female Embryo 21 eggs La Grande-Enterprise (OR), Potlatch (ID) Toxicity Factor Datasets
DDT (Technical Grade Mixture) 10.4% decrease change in mean eggshell thickness (relative to control) 0-0.8 miles from sprayed area Female Adult 21 eggs La Grande-Enterprise (OR), Potlatch (ID) Toxicity Factor Datasets
DDT (Technical Grade Mixture) no effect mean productivity (young produced) Both Male and Female Adult 21 eggs La Grande-Enterprise (OR), Potlatch (ID) Toxicity Factor Datasets
DDT (Technical Grade Mixture) 0.78 ppm mean DDT concentration in plasma of birds sampled 0-1.5 mi from sprayed area Both Male and Female Adult 23 birds La Grande-Enterprise (OR), Potlatch (ID) Toxicity Factor Datasets

Burrowing Owl (Athene cunicularia formerly Speotyto cunicularia)

Citation:

Heptachlor seed treatment contaminates hawks, owls, and eagles of Columbia Basin, Oregon

Author(s)
Henny, Charles J., Lawrence J. Blus and T. Earl Kaiser
Pages
41-48
Year
Issue
2
Volume
18
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
HEPTACHLOR no effect mean clutch size Female Adult 6 nests Columbia Basin Toxicity Factor Datasets
HEPTACHLOR no effect eggshell thickness Female Adult 6 nests Columbia Basin Toxicity Factor Datasets
Citation:

Food habits of the burrowing owl in central Oregon

Author(s)
Maser, Chris, E. Wayne Hammer and Stanley H. Anderson
Pages
19-26
Year
Issue
1
Volume
45
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition mammals (50), insects (108), birds (1) number of prey items found in sample pellets Both Male and Female Both Adults and Juveniles 39 pellets Crooked River National Grassland Exposure Factor Datasets
Dietary Composition mammals (85), insects (170), birds (3), spiders (0), reptiles (1) number of prey items found in sample pellets Both Male and Female Both Adults and Juveniles 60 pellets Crooked River National Grassland Exposure Factor Datasets
Citation:

Note on food habits of the screech owl and the burrowing owl of southeastern Oregon

Author(s)
Brown, Barbara A., John O. Whitaker, Thomas W. French and Chris Maser
Pages
421-426
Year
Issue
3
Volume
46
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition vertebrates (14.3%), invertebrates (85.7%) percent of diet based on pellet analysis Both Male and Female Adult 150 pellets Malheur county Exposure Factor Datasets
Citation:

Nesting success and habitat relationships of burrowing owls in the Columbia River Basin, Oregon

Author(s)
Green, Gregory A and Robert G. Anthony
Pages
347-354
Year
Volume
91
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Fledging or Weaning Rate 50-57% percent of occupied nests that fledged young Both Male and Female Adult 63-76 nests Gilliam, Morrow, and Umatilla counties Exposure Factor Datasets
Dietary Composition arthropods (92%), vertebrates (8%) percent occurrence in diet based on pellet analysis Both Male and Female Not Reported 5,559 pellets Gilliam, Morrow, and Umatilla counties Exposure Factor Datasets
Citation:

Comparative diets of burrowing owls in Oregon and Washington

Author(s)
Green, Gregory A., Richard E. Fitzner, Robert G. Anthony and Lee E. Rogers
Pages
88-93
Year
Issue
2
Volume
67
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition vertebrate (86.7%), invertebrate (13.3%) diet composition by percent biomass in pellets Both Male and Female Adult pellets 5,559 Columbia Basin Exposure Factor Datasets
Citation:

Artificial burrows provide new insight into burrowing owl nesting biology

Author(s)
Henny, Charles J. and Lawrence J. Blus
Pages
82-85
Year
Issue
3
Volume
15
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size eggs/clutch Female Adult 4 burrows Umatillo and Morrow counties Exposure Factor Datasets
Hatching Success based on number of young observed at burrow % Both Male and Female Hatchling 4 burrows Umatillo and Morrow counties Exposure Factor Datasets
Time of Mating/ Laying April Female Adult 4 burrows Umatillo and Morrow counties Exposure Factor Datasets

Double-crested Cormorant (Phalacrocorax auritus)

Citation:

Organochlorine residues and shell thinning in Oregon seabird eggs

Author(s)
Henny, Charles J., Lawrence J. Blus and Richard M. Prouty
Pages
15-21
Year
Volume
63
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
DDE (4,4'-), POLYCHLORINATED BIPHENYLS no effect shell thickness Female Adult 10 eggs from 10 nests OR coast Toxicity Factor Datasets

Great Horned Owl (Bubo virginianus)

Citation:

First records of chlordane-related mortality in wild birds

Author(s)
Blus, Lawrence J. and Charles J. Henny
Pages
196-198
Year
Issue
1
Volume
47
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
DDE (4,4'-), DIELDRIN, HEPTACHLOR EPOXIDE, OXYCHLORDANE, POLYCHLORINATED BIPHENYLS increased occurence of mortality as a result of organochlorine poisoning Female Adult 1 owl 6 km s. of Corvallis Toxicity Factor Datasets
Citation:

Case histories of bald eagles and other raptors killed by organophosporous insecticides topically applied to livestock

Author(s)
Henny, Charles J., Elizabeth J. Kolbe, Elwood F. Hill and Lawrence J. Blus
Pages
292-295
Year
Issue
2
Volume
23
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
FAMPHUR 85% decrease post-mortem brain cholinesterase activity compared to control Not Reported Not Reported 1 owl Malheur County Toxicity Factor Datasets

Sideblotched Lizard (Uta stansburiana)

Citation:

The life history of the side-blotched lizard, Uta stansburiana Baird and Girard, in north-central Oregon

Author(s)
Nussbaum, Ronald A. and Lowell V. Diller
Pages
243-260
Year
Issue
4
Volume
50
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Time of Torpor or Hibernation Oct. - Mar. Not Reported Not Reported Not Reported Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Growth Rate 0.22 growth rate measured as increase in snout-vent length (mm) mm/d Male Hatchling Not Reported Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Growth Rate 0.17 growth rate measured as increase in snout-vent length (mm) mm/d Female Hatchling Not Reported Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Body Weight - Mean g Both Male and Female Adult 11 Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Time of Mating/ Laying Apr. - June time of breeding Both Male and Female Adult Not Reported Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Time of Mating/ Laying May - July time of laying Both Male and Female Adult Not Reported Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Clutches or Litters per year clutches/yr Female Adult Not Reported Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Clutch or Litter Size 3.33 eggs/clutch Female Adult 87 Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets 0.08 SE
Body Weight - Mean egg weight g Not Reported Embryo 13 Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Population Density 175 #/ha Both Male and Female Both Adults and Juveniles Not Reported Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Home Range 0.219 estimated using probability density function (95% confidence interval) ha Male Adult 9 Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets 0.06 SE
Home Range 0.175 estimated using probability density function (95% confidence interval) ha Female Adult 8 Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Survival/ Mortality 30 annual adult survival % Both Male and Female Adult 36 Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets
Age at Sexual Maturity mo Both Male and Female Adult Not Reported Deschutes River, Jefferson county (elev., 732m) Exposure Factor Datasets

Pacific Giant Salamander (Dicamptodon tenebrosus)

Citation:

Nests and eggs of the pacific giant salamander, Dicamptodon ensatus (Eschscholtz)

Author(s)
Nussbaum, Ronald A.
Pages
257-262
Year
Volume
25
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Duration of Incubation or Gestation 275 d Not Reported Embryo Not Reported Benton County Exposure Factor Datasets
Clutch or Litter Size eggs/clutch Female Adult 2 Benton County Exposure Factor Datasets
Citation:

Population structure, growth and size of larval Dicamptodon ensatus (Eschscholtz)

Author(s)
Nussbaum, Ronald A. and Glen W. Clothier
Pages
218-227
Year
Issue
4
Volume
47
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Survival/ Mortality 57 % mortality during first yr of life % Not Reported Juvenile 61 Gauldy Mountain, Tillamook County Exposure Factor Datasets
Growth Rate increase in total length mm/mo Not Reported Juvenile Not Reported Mary's Peak and Palouse Exposure Factor Datasets
Citation:

Logging in western Oregon: responses of headwater habitats and stream amphibians

Author(s)
Corn, Paul Stephen and R. Bruce Bury
Pages
39-57
Year
Volume
29
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Error
Population Density 2.28 #/m2 Not Reported Not Reported 23 stream reaches streams in uncut forests, Lane, Douglas and Coos counties Exposure Factor Datasets 0.36 SE
Population Density 0.50 #/m2 Not Reported Not Reported 20 stream reaches streams in logged forests, Lane, Douglas and Coos counties Exposure Factor Datasets 0.24 SE

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
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

Red-spotted Garter Snake (Thamnophis sirtalis ssp. concinnus)

Citation:

Some observations on the natural history of two Oregon garter snakes (Genus Thamnophis)

Author(s)
Stewart, Glenn R.
Pages
71-86
Year
Volume
2
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Time of Hatching or Parturition late July - early Sept. Both Male and Female Embryo Not Reported Willamette Valley Exposure Factor Datasets
Duration of Incubation or Gestation 90 d Female Adult Not Reported Willamette Valley Exposure Factor Datasets
Age at Sexual Maturity 1 yr Male Adult Not Reported Willamette Valley Exposure Factor Datasets
Age at Sexual Maturity 2 yr Female Adult Not Reported Willamette Valley Exposure Factor Datasets
Clutch or Litter Size 8.2 determined by palpation young/litter Female Adult 18 Willamette Valley Exposure Factor Datasets

Pallid Bat (Antrozous pallidus)

Citation:

Effect of climatic variation on reproduction by pallid bats (Antrozous pallidus)

Author(s)
Lewis, Susan E.
Pages
1429-1433
Year
Volume
71
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition Error
Time of Hatching or Parturition June 17 (initiation) date of first capture of a lactating female Female Adult 39 John Day River Valley, 44deg 55' N, 120deg 27' W Exposure Factor Datasets breeding
Body Weight - Mean 21.7 mean body weight for lactating females g Female Adult 39 John Day River Valley, 44deg 55' N, 120deg 27' W Exposure Factor Datasets breeding 2.03 SD
Citation:

Food habits of eastern Oregon bats, based on stomach and scat analysis

Author(s)
Whitaker, John O., Jr., Chris Maser, and Stephen P. Cross
Year
Issue
4
Volume
55
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Dietary Composition Lepidoptera (20.0), unident. Orthoptera (60.0), unident. insects (20.0) Percent volume of stomach contents % Not Reported Not Reported 5 bats Exposure Factor Datasets

Pacific Treefrog (Pseudacris regilla formerly Hyla regilla)

Citation:

Growth, dispersal and survival of the Pacific tree frog

Author(s)
Jameson, David L.
Pages
25-29
Year
Volume
1956
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Growth Rate range of average increase in snout-vent length for 7 size classes (snout vent length; 28.0 - 35.9 mm) mm/yr Not Reported Adult 13 - 52 Washington County Exposure Factor Datasets
Survival/ Mortality 13.3 % surviving their first year % Not Reported Juvenile 15 Washington County Exposure Factor Datasets
Age at Sexual Maturity 8 mo Not Reported Adult Not Reported Washington County Exposure Factor Datasets
Survival/ Mortality 11 % surviving one year % Not Reported Adult 373 Washington County Exposure Factor Datasets
Growth Rate 2 increase in snout-vent length mm/wk Not Reported Juvenile 30 Washington County Exposure Factor Datasets
Citation:

Metabolic and morphological adaptation to heterogenous environments of the Pacific tree toad, Hyla regilla

Author(s)
Jameson, David L., William Taylor and John Mountjoy
Pages
75-89
Year
Volume
24
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Countries
Body Weight - Mean 2.27 g Both Male and Female Adult 90 Exposure Factor Datasets CANADA, MEXICO

Mallard duck (Anas platyrhynchos)

Citation:

Distribution and survival of mallards banded at Malheur National Wildlife Refuge

Author(s)
Jarvis, Robert L., and Sean B. Furniss
Pages
292-301
Year
Issue
3
Volume
52
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type Error
Survival/ Mortality 0.377 estimated annual survival rate (1960-1971) Male Juvenile Not Reported Malheur National Wildlife Refuge Exposure Factor Datasets 0.046 (SE)
Survival/ Mortality 0.628 estimated annual survival rate (1960-1971) Male Adult Not Reported Malheur National Wildlife Refuge Exposure Factor Datasets 0.035 (SE)
Survival/ Mortality 0.569 estimated annual survival rate (1960-1971) Female Juvenile Not Reported Malheur National Wildlife Refuge Exposure Factor Datasets 0.105 (SE)
Survival/ Mortality 0.586 estimated annual survival rate (1960-1971) Female Adult Not Reported Malheur National Wildlife Refuge Exposure Factor Datasets 0.081 (SE)

Western Pond Turtle (Actinemys marmorata formerly Clemmys marmorata)

Citation:

Notes on reproduction in Clemmys marmorata

Author(s)
Feldman, Mark
Pages
10-11
Year
Issue
1
Volume
13
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size eggs/clutch Female Adult 4 Umpqua River, Roseburg, Douglas County Exposure Factor Datasets

Long-toed Salamander (Ambystoma macrodactylum)

Citation:

Life history patterns of the salamander Ambystoma macrodactylum in the high Cascade mountains of southern Oregon

Author(s)
Kezer, James and Donald S. Farner
Pages
127-131
Year
Volume
1955
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Time of Mating/ Laying May - July time of laying Female Adult Not Reported Crater Lake, Munson Oxbow Pond, Aant Point Pond, Whitehorse Bluff ponds and Lake West Exposure Factor Datasets

Northern Red-legged Frog (Rana aurora) formerly Rana aurora ssp. aurora

Citation:

Effects of introduced bullfrogs and smallmouth bass on microhabitat use, growth, and survival of native red-legged frogs (Rana aurora)

Author(s)
Kiesecker, Joseph M. and Andrew R. Blaustein
Pages
776-787
Year
Volume
12
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type Age-Specific
Body Weight - Mean see citation figure of mean mass of larvae with and without bullfrog presence Not Reported Hatchling 100-150 field enclosures at E.E. Wilson Wildlife Refuge, Benton County Exposure Factor Datasets Gosner stage 25 larvae
Age at Fledging, Metamorphosis, Weaning see citation figure of mean time to metamorphosis with and without bullfrog presence Not Reported Hatchling 100-150 field enclosures at E.E. Wilson Wildlife Refuge, Benton County Exposure Factor Datasets Gosner stage 25 larvae
Citation:

Notes on the breeding biology of the red-legged frog (Rana aurora aurora)

Author(s)
Storm, Robert M.
Pages
251-259
Year
Issue
4
Volume
16
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Time of Mating/ Laying Jan. - Feb. time of egg laying Female Adult Not Reported Corvallis Exposure Factor Datasets
Clutch or Litter Size #/egg mass Female Adult 6 egg masses Corvallis Exposure Factor Datasets
Time of Fledging or Metamorphosis June - July Not Reported Tadpole Not Reported Corvallis Exposure Factor Datasets
Age at Sexual Maturity 2 yr Both Male and Female Adult Not Reported Corvallis Exposure Factor Datasets
Duration of Incubation or Gestation time from egg to hatching under field conditions wks Not Reported Embryo Not Reported Corvallis Exposure Factor Datasets

California Ground Squirrel (Spermophilus beecheyi)

Citation:

Latitude and litter size of the California ground squirrel, Spermophilus beecheyi

Author(s)
Chapman, Joseph A. and Gordon S. Lind
Pages
101-105
Year
Volume
72
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size range of means for 2 sites young/litter Female Adult 9-13/site Douglas and Benton counties {lat., 43-44.5^oN] Exposure Factor Datasets

Eastern Long-toed Salamander (Ambystoma macrodactylum ssp. columbianum)

Citation:

Life history characteristics of populations of the long-toed salamander (Ambystoma macrodactylum) from different altitudes

Author(s)
Howard, James H. and Richard L. Wallace
Pages
361-373
Year
Volume
113
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Time of Mating/ Laying Apr.-May time of breeding Both Male and Female Adult Not Reported Bear Wallow, Baker County (elev., 1140m) Exposure Factor Datasets
Clutch or Litter Size 105.3 eggs/cluster averaged 14.8 eggs/female Female Adult 16 Bear Wallow, Baker County (elev., 1140m) Exposure Factor Datasets 31.03 SD
Growth Rate increase in snout-vent length mm/d Both Male and Female Juvenile Not Reported Bear Wallow, Baker County (elev., 1140m) Exposure Factor Datasets
Time of Mating/ Laying June - July time of breeding Both Male and Female Adult Not Reported Wallowa County (elev., 2470m) Exposure Factor Datasets
Clutch or Litter Size 90.1 eggs/female Female Adult 7 Wallowa County (elev., 2470m) Exposure Factor Datasets 48.87 SD

Coyote (Canis latrans)

Citation:

Coyote foods in a coniferous forest in Oregon

Author(s)
Toweill, Dale E. and Robert G. Anthony
Pages
507-512
Year
Volume
52
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Dietary Composition rodents (36%); ungulates (26%); lagomorphs (23%); insectivores (2%); other mammals (1%); unidentified mammals (13%); birds (8%); reptiles (2%); insects (3%); fruit (38%); grass (13%); human refuse (1%) annual % frequency of occurrence in scats % Not Reported Not Reported 844 Willamette National Forest, Lane County (elev., 500-1500 m) Exposure Factor Datasets

Western Toad (Anaxyrus boreas formerly Bufo boreas)

Citation:

Mating pattern variability among western toad (Bufo boreas) populations

Author(s)
Olson, Deanna H., Andrew R. Blaustein, Richard K. O'Hara
Pages
351-356
Year
Volume
70
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Time of Mating/ Laying May - July time of mating Both Male and Female Adult Not Reported Deschutes and Linn counties (elev., 1220-1950m) Exposure Factor Datasets
Citation:

Selective mortality and reproduction in a natural population of Bufo boreas

Author(s)
Samollow, Paul B.
Pages
18-39
Year
Issue
1
Volume
34
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size 12,000 # eggs/spawn Female Adult Not Reported Lost Lake, Linn county Exposure Factor Datasets

Ensatina (Ensatina eschscholtzii)

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:

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 Units Sex Life Cycle Stage Sample Size Location Type
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

Western Snowy Plover (Charadrius nivosus ssp. nivosus formerly Charadrius alexandrinus ssp. nivosus)

Citation:

Distribution, abundance, and nesting characteristics of Snowy Plovers on the Oregon Coast

Author(s)
Wilson-Jacobs, Ruth and E. Charles Meslow
Pages
40-48
Year
Issue
1
Volume
58
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Time of Mating/ Laying April, May months of peak nest initiation activity, 2 years Both Male and Female Adult 2-15 nests/colony/year coast Exposure Factor Datasets
Hatching Success 13 proportion of nests with at least one egg hatching % Not Reported Hatchling 72 nests coast Exposure Factor Datasets

Valley Garter Snake (Thamnophis sirtalis ssp. fitchi)

Citation:

Variation in clutch and litter size in New World reptiles

Author(s)
Fitch, Henry S.
Pages
28
Year
Volume
76
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Clutch or Litter Size 11.32 based on embryo count eggs/litter Female Adult 22 Exposure Factor Datasets 0.98

Common Garter Snake (Thamnophis sirtalis)

Citation:

The feeding habits of California garter snakes

Author(s)
Fitch, Henry S.
Pages
1-32
Year
Volume
27
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Dietary Composition Slug (1.4%); Earthworm (23.6%); Frog, Rana (6.9%); Toad, Bufo and Scaphiopus (30.5%); Tree Toad (20.8%); Leech (4.0%); Tadpole (10%); Minnow (1.4%); Unidentified fish (1.4%) % of total recorded food items % Not Reported Not Reported 48 Exposure Factor Datasets
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