760 
Fishery Bulletin 95(4), 1 997 
1 1 I T'TTt 
S M K F C R Y 
Site 
Figure 9 
Peak hatching day and mean (±SE) incu- 
bation temperature (°C) for eggs spawned 
from mature Pacific herring by site and 
region in Alaska, 1995. S = Sitka, M = St. 
Mathews Bay, K = Ketchikan, F = Fish 
Bay, C = Port Chalmers, R = Rocky Bay, Y 
= Seymour Canal; sites are in chronologi- 
cal order of spawning date. 
Understanding the long-term implications of ex- 
posure of Pacific herring to oil in PWS was the prin- 
cipal objective of this research. Regardless of the life 
stage of herring and the likelihood of possible oil ex- 
posure, herring we sampled in PWS in 1995 appeared 
to be reproductively fit and similar to herring in SE. 
Although herring stocks are still depressed in PWS, 
factors other than reproductive impairment are prob- 
ably limiting recovery. 
Acknowledgments 
We thank John Campbell, Jamison Clark, Mary 
Drew, Dan Fremgen, Chris Hanson, Dave Love, 
Xiaohong Luan, Nathan Magaret, Joshua Millstein, 
Catherine Pohl, Jeff Regelin, June Sage, Michele 
Sleeter, and Justin Stekoll for technical laboratory 
assistance. We also thank the Alaska Department of 
Fish & Game Commercial Fisheries Division in Sitka, 
Ketchikan, Juneau, and Cordova for help in collect- 
ing herring and for providing laboratory space. The 
research described in this paper was supported by 
the Exxon Valdez Oil Spill Trustee Council. The find- 
ings and conclusions presented by the authors, how- 
ever, are their own and do not necessarily reflect the 
view or position of the Trustee Council. 
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