FISHERY BULLETIN: VOL 77. NO. 4 



Table 6. — Development of spines in the head region ofSebastes flavidus larvae and juveniles. + denotes spine present and - denotes 



spine absent. 



Preopercular 

 (anterior series) 



Preopercular 

 (posterior series) 



Opercular 



3d 



Inter- Sut>- 

 oper- oper- 



Pre- Supra- 



5th Superior Inferior cular cular ocular ocular 



Post- 

 ocular 



+ -I- 



+ + 



-f + 



+ + 



V) 



(') 



{') 



+ 



(') 

 {') 



V) 



(') 



CI 



(') 



'Bump, indicates beginning ot spine formation or bony overgrowth of spine. 



'Transforming. 



'Pelagic juvenile 



^Parietal and nuchal spines fused. 



^Benthic juvenile 



''Spine covered by fleshy lobe 



'Adjacent spines fused 



^Spine has become scale-covered. 



characteristic of adults of S. flavidus, usually be- 

 comes distinct on juveniles 100 mm long. 



Occurrence (Figures 7-10). — Adults of S. flavidus 

 occur from San Diego, Calif., to Kodiak Island, 

 Alaska (Miller and Lea 1972). Off Oregon they 

 are most common on the continental shelf be- 

 tween 100 and 200 m (Snytko and Fadeev'). Data 

 from Niska (1976) showed that 92% of the total 

 Oregon trawl catch of S. flavidus from 1963 to 



1971, was taken from depths of 54 to 218 m. Con- 

 centrations of adult S. flavidus have been found 

 along Astoria Canyon, between lat. 46°10' N and 

 46°20' N, and also between lat. 44°30' N and 45° 



'Snytko. V. A., and N. S. Fadeev. 1974. Data on distribu- 

 tion of some species of sea perches along the Pacific coast of 

 North America during the summer- autumn seasons. Docu- 

 ment submitted to the Canada-USSR Meeting on Fisheries in 

 Moscow-Batumi, USSR. November 1974, 14 p. (Transl. 3436, 

 Can. Transl. Ser.) 



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