FISHERY BULLETIN: VOL. 83, NO. 4 



Table 4.— Mean abundances (number per 1,000 m^) for coastal larval species from summer night 



samples. 



Species 



Clupeidae 



Clupea harengus 

 Osmeridae 



Undetermined spp. 

 Gadidae 



Gadus macrocephalus 



MIcrogadus proximus 

 Cottidae 



Artedius fenestralis 



Artedius harringtoni 



Artedius meanyi 



Clinocottus embryum 



Cottus asper 



Radulinus asprellus 

 Agonidae 



Odontopyxis trispinosa 

 Cyclopteridae spp. 1 



Undetermined spp. 

 Bathymasteridae 



Ronquilus jordani 

 Ptilichthyidae 



Ptilichthys goodei 

 Botfiidae 



Citharichthys stigmaeus 

 Pleuronectidae 



Isopsetta isolepis 



Lepidopsetta bilineata 



Parophrys vetulus 



Psettichthys melanostictus 



Depth (m) 



0-5 5-10 10-20 20-30 30-40 40-50 >50 



Mean 



— 4.42 15.15 4.56 — 0.75 1.12 3.71 



— — — 0.82 3.16 8.11 22.98 5.01 

 0.66 0.61 — 4.66 1.95 3.29 6.91 2.58 



3.20 — 0.78 1.57 — 0.75 2.60 1.27 



1.35 4.41 5.44 11.30 0.73 1.27 1.40 3.70 



0.66 4.48 0.71 4.12 0.74 1.01 3.62 2.19 



0.66 — — ____ 0.09 



— — — — — — 2.50 0.36 



— — 0,77 0.79 — — — 0.22 



— — — 3.96 0.73 — 4.74 1.35 



— — 0.71 1.70 — 1.27 — 0.53 



— — — 0.74 0.74 — — 0.21 



— 2.57 1.63 6.50 2.64 10.90 1.12 3.62 



0.66 — 0.71 — _ _ _ 0.20 



24.63 31.37 13.65 18.86 7.78 6.07 6.91 15.61 



to -P 

 20 -I 

 50 - 

 40 -1 

 SO ' 



Spring- Ooy 



Summer - Doy Summer- Night 



60 





 S 

 10 



f 30 



a. 



e 40 

 O 



50 - 

 60 



Godm 

 moerocepholm 



20 



I > 



10 20 



p Pselllchlh vi 

 melano3ticlu> 



I I 



20 40 



20 40 





 S - 



10 



20 - 

 30 - 

 40 

 50 - 

 60 



I Lyo pselto 

 eiilis 



I 1 



20 40 20 40 20 



Abundonce (No./IOOOm^) 



40 



Figure 4.— Vertical abundance patterns of the three most abun- 

 dant taxa {Gadus niacrocephaltus, Psettichthys melanostictus, 

 and Lyopsetta exilis) during the three sampling periods. 



616 



Artedius and cyclopterid species. Artedius 

 fenestralis, A. harringtoni, and A. meanyi were 

 taken almost exclusively in the summer sampling 

 period. All species were most abundant in nighttime 

 samples. During the day, A. harringtoni larvae were 

 distributed relatively uniformly throughout the 

 water column from about 10 to 60 m, whereas at 

 night most larvae were taken from the 5-30 m depth 

 strata. Most cyclopterid larvae collected in spring 

 were the larval type referred to as Cyclopteridae spp. 

 1 by Richardson and Pearcy (1977). Other cyclopterid 

 species were more abundant in summer. Most 

 cyclopterid larvae were collected below 20 m during 

 both night and day, and in summer were abundant 

 at the deepest sampling depths. 



Osmerid larvae of undetermined species had a 

 unique distribution pattern. They were abundant 

 during spring, rare during summer daytime samples, 

 and most abundant during summer nighttime 

 samples. During both spring and summer, larvae 

 were most abundant at the 10-20 m depth stratum. 



Offshore Assemblage 



Spring to summer differences in abundance pat- 

 terns were more distinct for offshore larval species 

 as compared with coastal species (Tkbles 5, 6, 7). 



