FISHERY BULLETIN: VOL. 82. NO 1 



FIGURE 1.— Passamaquoddy Bay and the adjacent Bay of Fundy indicating sampling stations 



occupied during the study. 



at approximately monthly intervals over a 5-yr 

 period, 1976-81 (Table 1). Station A was the same 

 site sampled by Tyler (1971) during 1965-66. Fish 

 were collected using a %-35 shrimp trawl (3.8 cm 

 stretch mesh nylon; 15.5 m foot rope), similar to the 

 %-35 Yankee trawl used by Tyler (1971), towed by 

 the 1 50-hp, 14m stern trawler, Fisheries and Oceans' 

 RV Pandalus II. Tows at each station were along a 1 .6 

 km transect at about 4 km/h. Stations A and B were 

 sampled once per trip between 1976 and 1979, and 

 station C was sampled sporadically. From 1979 to 

 1981, tows at stations A and B were replicated and 

 station C was sampled regularly. Captured fishes 

 were identified to species, and adults and juveniles 

 were categorized by size and enumerated separately. 

 During the final year of collecting, fork length of all 

 fishes was recorded to the nearest centimeter and 

 otoliths were collected from Atlantic cod, ocean pout, 

 American plaice, winter flounder, and witch flounder 

 for age determination. Atlantic cod otoliths were sec- 



tioned for aging, other species were aged using the 

 whole otolith. Results reported are the empirical 

 length at age. 



Between June and September 1976, 12 estuarine, 

 intertidal, and inshore marine stations were sampled 

 within Passamaquoddy Bay and Head Harbour 

 Passage (Fig. 1). In addition, station 3 was sampled 

 monthly during the period May 1976-November 

 1977, station 8 was sampled at approximately weekly 

 intervals from May to September 1981, and stations 

 1 and 10 were sampled in December 1980 (Table 1). 

 Fish were collected using a 9 m, 1.3 cm mesh beach 

 seine, a 3.7 m shrimp trawl with a 3 mm cod end 

 towed behind a 5 m Boston whaler, or bottom-set gill 

 nets with stretched mesh sizes ranging from 7.6 to 

 17.8 cm. Standard fishing efforts employed with each 

 gear type were shore seine hauls of 5 min during the 

 2-h period before and after low water, trawl tows of 10 

 min, and overnight gill net sets of 16 h. 



Temperature, salinity, and substrate type were 



122 



