44 
Fishery Bulletin 1 14(1) 
Yatsu, A., S. Midorikawa, T. Shimada, and Y. Uozurni. 
1997. Age and growth of the neon flying squid, Ommas- 
trephes bartrami, in the North Pacific Ocean. Fish. Res. 
29:257-270. 
Yatsu, A. 
2000. Age estimation of four oceanic squids, Ommas- 
trephes bartramii, Dosidicus gigas, Sthenoteuthis oual- 
aniensis, and Illex rgentines (Cephalopoda, Ommas- 
trephidae) based on statolith microstructure. Japan 
Agric. Res. Q. 34:75-80. 
Yatsu, A., T. Watanabe, J. Mori, K. Nagasawa, Y. Ishida, T. 
Meguro, Y. Kamei, and Y. Sakurai. 
2000. Interannual variability in stock abundance of the 
neon flying squid, Ommastrephes bartramii, in the North 
Pacific Ocean during 1979-1998: impact of driftnet fishing 
and oceanographic conditions. Fish. Ocean. 9:163-170. 
