FISHERY BULLETIN VOL 



.NO 1 



Table 2. — Names of head region spines of larval and juvenile Sebastes spp. used in this paper with 

 corresponding names used for adults and bones from which the spines originate. Spines listed in the 

 first column are shown in Figure 1 clockwise beginning with the nasal. 



'After Phillips (1957) and Chen (1971) 

 ■'Afler Malsubara (1943) and Weitzman (1962) 



follows Weitzman (1962 

 Poss.* 



as recommendeii by 



SEBASTES CRAMERl (JORDAN) 



(Figures 2, 3, 4) 



Literature. — Pigment patterns of preextrusion 

 larvae of S. crameri were described by Westrheim 

 et al.," including one figure, and Westrheim 

 (19751. Preextrusion larvae (mean total length = 

 5.7 mm) have a rowof 10 to 23 melanophores(45'7f 

 of 60 larvae had <16 melanophores) along the 

 ventral body midline which stops short of the anus 

 by four myomeres. Melanophore(s) are also usu- 

 ally present on the ventral finfold in the hypural 

 region. The gut is pigmented. No pigment occurs 

 on the head, nape, or dorsal body midline, how- 

 ever. Westrheim ( 1975) reported that S. crameri 

 larvae, along with several other species, reared for 

 several days develop pigment spots on the head, 

 nape, and or lower jaw. 



*S. G. Poss, Ph.D. Candidate, Department of Zoolog>', Univer- 

 sity of Michigan, Ann Arbor, Ml 48109. pers. commun. .Julv 

 1977. 



'Westrheim, S. J., W. R. Harling, and D. Davenport. 

 1968, Preliminary report on the maturity, spawning season 

 and larval identification of rockfishes i.Sebastotles ) collected off 

 British Columbia in 1967. Fish. Res. Board Can., Manuscr 

 Rep. 9.51.23 p. 



Identification (Table 3, Appendix Tables 2-6l. — 

 Eighty-one specimens of S. crameri, ranging from 

 8.0 to 130.5 mm, were identified. Juveniles were 

 identified using the following combination of 

 characters recorded from specimens in our collec- 

 tions: 



Gill rakers = 30-34 



Lateral line pores = 43-50 



Pectoral fin rays = 18-20, usually 19 



Anal fin soft rays = 7 



Dorsal fin soft rays = 13-15 



Supraocular spine = present 



Interorbital space = flat to convex. 



No other species on our list of potential species 

 agrees with all these characters. In addition, the 

 characteristic pigment banding of adults was ob- 

 vious on larger juveniles. Larvae and juveniles 

 were relatively abundant in our collections and 

 adults are known to be abundant in terms of 

 biomass in trawl catches off the Oregon coast 

 (Demory et al. 1976; Niska 1976). The develop- 

 mental series was linked together primarily on 

 the basis of pigmentation and also body shape and 

 time of occurrence. Identification of most of the 

 smaller specimens was further substantiated by 

 meristics, particularly the constancy in nurn lor of 

 anal and pectoral fin rays (Table 3). 



