UJ 

 CD 



z 



ni 



Figure 3.— Length-frequency distribution of Canadian eelpout 

 laugiil in tlie northeastern Chukchi and western Beaufort Seas in 

 .\ugust-Septeniber 1977. 



FORK LENGTH Ccm) 



4. 5 5 5. 5 

 FORK LENGTH (cm) 



Figure 4.— Length-frequency distribution of twohorn sculpins 

 caught in the northeastern Chukchi and western Beaufort Seas in 

 .\ugust-September 1977. 



averaged 5.65 cm (range 5.0-7.0, SD = 0.650). and six 5 + -yr-old 

 fish averaged 5.87 cm (range 5.4-6.8. SD = 0.557). 



Females appeared to mature at about 4 yr of age and a size of 

 about 6 cm. The eggs of mature females were 1.4 to 1.9 mm in 

 diameter and ranged in number from 79 to 180. Andriyashev 

 ( 1954) reported that this species spawns in August to October at 

 which time the ovaries contain 147 to 340 eggs up to 3.1 mm in 

 diameter. 



Stomachs of 38 fishes contained identifiable remains. Gammarid 

 amphipods occurred in 23, polychaetes in II, mysids and isopods 

 each in 3, euphausiids and hyperiid amphipods each in 2, and 

 shrimp and cumaceans each in 1 . 



Artediellus icaier.— Thirty-six hamecon were caught at 1 1 sta- 

 tions. All stations at which they occurred were in water depths <70 

 m. Specimens ranged in size from 2.7 cm TL (0.3 g) to 7.6 cm TL 

 (6.6 g). Females > 5.6 cm (about 3 or4yrold) appeared reproduc- 

 tively mature and had 50 to 100 eggs ranging in size from 0.6 to 1 .6 

 mm. The oldest specimen for which age could be determined was 7 

 yr old. Growth from the age of 1-5 yr was about 0.8 cm/yr. 



Stomachs of 24 fishes contained identifiable food. Polychaete 

 worms and gammarid amphipods each occurred in 15 stomachs, 

 mysids in 6, cumaceans in 2, and euphausiids, hyperiid ainphipods, 

 and isopods each in 1 . 



Aspidophoroides o/nAr/.— Thirty-six Arctic alligatorfish were 

 caught at six stations ranging from 40 to 400 m. Most were caught 

 nearand to the east of Point Barrow. Specimens ranged from 4.0 cm 

 TL (0.3 g) to 6.7 cm TL (2.3 g). A 6.3 cm female had 260 eggs 0.8 



to 1.2 mm in diameter. Six stomachs contained identifiable food. 

 Gammarid amphipods occurred in four stomachs and polychaete 

 worms in two. 



Liparis spp.— Thirty-four snailfish were caught at 20 stations. 

 ■ No more than four individuals occurred in any tow. Most of the 

 specimens could not be identified to species due to damage caused 

 by the large quantities of mud and small rocks present in many of 

 the tows. Three specimens were identified as L. herscheliniis and 

 four as L. koefoedi. 



The liparids ranged from 3.8 cm TL (0.4 g) to 12.2 cm TL (34.5 

 g). Age determination was not possible because of minute size and 

 opaque nature of the otoliths. Two specimens (8.5 and 9.7 cm TL) 

 had numerous large (up to 2 mm) eggs which appeared nearly ripe. 

 Of 16 stomachs containing identifiable food, gammarid amphipods 

 occurred in 12, caprellids, hyperiid amphipods, isopods, and poly- 

 chaetes each in 2, and copepods and euphausiids each in 1. 



Eumicrotremus derjugini .—Tweniy-nine leatherfin lumpsuck- 

 ers were caught in 50- 110 m: 3 west of Prudhoe Bay and 26 east of 

 Prudhoe Bay. 



Specimens ranged from 2.5 cm TL (0.7 g) to 8.5 cm TL (35.8 g). 

 Only four were larger than 4.0 cm; these were females. Of 21 indi- 

 viduals for which sex was determined, 15 were females and 6 were 

 males. Females >6.5 cm long appeared to be reproductively 

 mature and had eggs of two size classes, 0.4 to 0.8 mm and 3.0 to 

 4.0 mm diameter No age determinations were made for this spe- 

 cies. 



The main prey of leatherfin lumpsuckers were hyperiid amphi- 

 pods (Pamlheinisto libelliila) which occurred in 23 of 25 stomachs 



