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Appendix D - Normal Brain Cholinesterase Activity Values

Author: Milton Smith

Species Mean1 Standard
Deviation
Sample
Size
Avocet, American 19.4 2.9 5
Blackbird, Red-winged 24.5 1.2 5
Bobwhite, Northern 16.3 2.1 7
Brant, Black 14.4 0.8 5
Coot, American 20.5 5.0 12
Cormorant, Double-crested 29.3 2.4 5
Cowbird, Brown-headed 19.7 2.6 5
Crane, Mississippi Sandhill 16.6 2.3 15
Crane, Sandhill 17.5 1.4 8
Crane, Whooping 15.1 1.5 9
Dove, Mourning 22.8 3.3 11
Duck, American Widgeon 10.5 1.0 12
Duck, Blue-winged Teal 19.5 3.6 6
Duck, Green-winged Teal 13.5 2.0 17
Duck, Kola 11.0 1.2 9
Duck, Mallard 11.0 1.6 75
Duck, Muscovy 11.6 3.5 8
Duck, Northern Shoveler 14.7 1.2 5
Duck, Pintail 11.6 1.3 24
Duck, Ruddy 13.4 1.4 8
Duck, Wood 10.2 1.5 9
Eagle, Bald 16.0 2.6 156
Eagle, Golden 16.0 2.2 57
Egret, Common 17.4 1.9 5
Egret, Snowy 25.0 1.3 5
Falcon, Peregrine 18.6 3.2 27
Goldfinch, American 17.8 1.5 10
Goose, Canada 11.9 2.0 36
Goose, Canada (Aleutian) 14.0 3.6 8
Goose, Ross 14.2 2.3 9
Goose, Snow 13.6 2.6 42
Goose, White-fronted 12.1 1.2 9
Grebe, Eared 14.7 1.4 17
Grosbeak, Evening 20.3 3.1 5
Gull, Ringbilled 23.9 6.5 8
Hawk, Red-tailed 17.5 1.4 7
Hawk, Sharp-shinned 21.5 2.0 6
Heron, Black-crowned Night 15.6 3.0 5
Heron, Great Blue 13.3 2.1 8
Loon, Common 17.3 4.4 5
Owl, Great-horned 15.5 2.0 7
Owl, Screech 18.7 1.4 5
Owl, Spotted 14.6 2.0 9
Parrot, Puerto Rican 19.4 2.0 6
Pelican, American White 13.0 1.3 13
Pelican, Brown 11.2 1.2 16
Sandpiper, Semipalmated 14.1 1.1 5
Siskin, Pine 16.9 2.3 16
Stork, Wood 18.7 4.2 8
Swan, Trumpeter 11.3 1.3 10
Swan, Tundra 11.6 1.7 14
Tern, Least California 44.1 9.1 5
Woodcock, American 16.8 1.1 5
Woodpecker, Red-cockaded 38.4 4.8 5

1 Cholinesterase activity is expressed as micromoles acetylthiocholine hydrolyzed per minute per gram of wet weight brain tissue (Hill, E.F. and Fleming, W.J., 1982, Environmental toxicology and chemistry 1:27--38).

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