Table 10.— Geographic breakdown of food of haddock. Melanogrammus aeglefinus, in the northwest Atlantic. 

 Data are expressed as percentage weight, for fish collected during the spring and autumn bottom trawl sur- 

 vey cruises 19ti9-72. (+ indicates present but <0.1%.) 



Maine some of the more common were Sabella (0.4Vc), 

 Eunice pennata (0.2';x), Nephtys (0.2%), Goniada 

 (0.1%), and Lumbrineris (0.1%). In Western Nova Scotia 

 a variety of polychaetes were identified in the stomach 

 contents but the only genera contributing >0.1% to the 

 diet were Cistenides (0.5%), Aphrodita (0.8%), and 

 Eunice (0.4%). 



Longfin hake, Phycis chesteri. — Although longfin 

 hake were collected in all five geographic areas, a discus- 

 sion of the areal breakdown of its prey is of little value. 

 Few fish were collected and, on Georges Bank, where the 

 largest sample was taken, over half the stomachs were 

 empty, effectively leaving a maximum of 26 fish from 6 

 stations to evaluate the food in any one region. Never- 

 theless, in all areas, crustaceans were the major prey, 

 with the euphausiid, Meganyctiphanes norvegica, being 

 the most important. 



Fourbeard rockling, Enchelyopus cimbrius. — Four- 

 beard rockling were collected for stomach contents anal- 

 ysis in three of the five geographic areas. Only or. Georges 

 Bank, however, was the total weight of the prey (12.42 g) 

 and sample size (n = 27) sufficiently large to warrant any 

 discussion. On Georges Bank crustaceans were the major 

 prey, accounting for 59.3% of the diet. The two most 

 important crustaceans were Crangon septemspinosa 

 (46.3%) and Dichelopandalus leptocerus (11.2%). The 

 other taxonomic grouping of importance was the Poly- 

 chaeta (13.6%), and here the only identification to the 

 genus level was Ammotrypane (3.9%). 



Marlin-spike, Nezumia bairdi. — Marlin-spike were 

 collected in three of the geographic areas. Southern New 

 England, Gulf of Maine, and Western Nova Scotia, but 

 in very small numbers. Due to the small sample size, 

 both in the number of fish examined and the total weight 



15 



