28 
Appendix III 
Organochlorine Residue Concentrations (geometric mean, 95% confidence interval [CI], 
and range) in Eggs of Alaskan Seabirds, by Species, 1973-76 
residues of these chemicals in samples from 1976 were 
combined to facilitate presentation of data (see Methods). 
Chemicals not listed for a particular locality were not de- 
tected in eggs of that species from that locality; ND = not 
Lipid content of the eggs is given as mean and SE. The 
lipid percentages reported here may not represent the nor- 
mal content of fresh eggs, because some eggs contained 
embryos at various stages of development and minor de- 
composition may have occurred in some eggs. Cis-chlor- 
dane was not separable from trans-nonachlor in 1973-75; 
detected. 






Residues in ppm (wet weight) 



Region; site; N, year, and PCB/DDE; and chemical No. with residues Mean 95% CI Range 
A. Common loon (N = 1; lipid content = 5.20%) 
Gulf of Alaska 
Kodiak Island 
N =1; 1975; 2.0 
DDE 1 0.550 — — 
DDD 1 0.012 = 4 
DDT 1 0.015 = —_ 
Dieldrin 1 0.023 — = 
Heptachlor epoxide 1 0.013 - — 
Mirex 1 0.009 — = 
Oxychlordane 1 0.015 ~ — 
Cis-chlordane 1 0.065 — = 
Cis-nonachlor ] 0.009 = = 
HCB 1 0.021 _ ext 
Toxaphene 1 0.120 — = 
PCB’s 1 1.10 = - 
B. Northern fulmar (N = 22; lipid content = 7.67 + 0.33%) 
Gulf of Alaska 
Semidi Islands 
N = 16; 1976; 1.0 
DDE 16 0.484 0).26-0.75 0.19-2.8 
DDD 12 0.007 0.004-0.010 ND-0.019 
DDT 16 0.048 0.032-0.065 0.005-0.13 
Dieldrin 8 0.005 = 0.002-0.007 ND-0.016 
Heptachlor epoxide 1 <0,001 0-0.0007 ND-0.004 
Mirex 9 0.004 0.002-0.006 ND-0.010 
Oxychlordane 16 0.033 0.026-0.041 0.015-0,063 
HCB ll 0.008  0.005-0.011 ND-0.018 
PCB's 16 0.484 0.36-0.62 0.20-1.2 
Pribilof Islands 
St. George Island 
N= "6; 1875; a 
DDE 6 0.307 0.19-0.44 0.14-0.45 
DDD 5 0.008  0.002-0.013 ND-0.015 
DDT 6 0.015 0.001-0.029 0.006-0.041 
Dieldrin 5 0.008  0.003-0.013 ND-0.015 
Heptachlor epoxide 3 0.005 0-0.011 ND-0.013 
Mirex 2 0.002 0-0.006 ND-0.008 
Oxychlordane 6 0.067 0.021-0.12 0.007-0.14 
Cis-chlordane 2 0.001 0-0.004 ND-0.005 
Cis-nonachlor 2 0.003 0-0.007 ND-0.008 
HCB 6 0.055 = 0.033-0.077 0.028-0.089 
Toxaphene 6 0.051  0.028-0.074 0.029-0.081 
PCB’s 6 0.387 0.19-0.61 0.26-0.81 

