280 



Fishery Bulletin 97(2), 1999 



when seasonal upwelling and increasing solar radia- 

 tion stimulate phytoplankton growth, larvae must 

 subsist on the combined resources of endogenous re- 

 serves and limited prey abundance. During the days 

 following birth, the quantity of lipid reserves may 

 influence the length of time larvae can persist until 

 adequate forage is available to sustain survival and 

 growth. Starvation has been considered a factor in 

 recruitment variability in rockfish species ( Moser and 

 Boehlert, 1991). Larvae from populations with lesser 

 energy reserves may experience greater mortality, 

 thereby reducing their representation in the year 

 class for the species along the entire coast. 



The use of lipid and protein data as an indicator of 

 nutritional condition at birth for rockfish in the ge- 

 nus Sebastes marks an extension of such data to vi- 

 viparous fishes for the first time. Previously, lipid 

 class analyses have been employed for condition as- 

 sessments only in oviparous fish embryos (Tocher et 

 al., 1985; Fraser et al., 1988) and larvae ( Fraser, 1989; 

 Hakanson, 1989; Lochmann et al., 1995). 



Acknowledgments 



We wish to express our appreciation to Maxwell 

 Eldridge, Brian Jarvis, and Michael Bowers for their 

 assistance with collecting the fish used in this re- 

 search. We also thank Richard Powers, owner and 

 operator of the FV New Sea Angler, as well as the 

 officers and crew of the NOAA ship David Starr Jor- 

 dan for their invaluable expertise and effort during 

 marine operations. 



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