FISHERY BULLETIN: VOL. 80. NO. 3 



MATERIALS AND METHODS 



We collected white perch at seven beach sein- 

 ing stations, nine trawling areas, and one experi- 

 mental mesh gill net location between Haver- 

 straw and Bear Mountain, N.Y., on the Hudson 

 River from April through November 1970 (Fig. 

 1). Beach seine collections were made with a 30.4 

 m by 2.4 m seine (9.5 mm square mesh) or a 15.2 

 m by 1.5 m seine (6.5 mm square mesh), each 

 with a central bag of 6.5 mm square mesh. The 



large seine was set from shore with the aid of a 

 boat and retrieved in a semicircle. The 15.2 m 

 seine was handhauled by pulling the seine paral- 

 lel to the shore in water ~1.2 m deep. The large 

 seine was fished in water ~2.4 m deep. 



Bottom and surface trawls were made with a 

 7.6 m semiballon trawl, constructed with a 38.1 

 mm stretch mesh nylon body, with a 31.8 mm 

 stretch mesh nylon cod end rigged with an inner 

 liner of 6.5 mm stretch mesh nylon. Trawl doors 

 were 1.1 m in length and 0.46 m in width. Tow 



Bear Mt. Bridge 



Peekskill 



N 



Albany 



Catskill 

 Sougerties 

 Kingston 



32 



Newburgh 



x Bear Mt 



Stony Point- 



Hoverstrow 



Nyack' 



Manhattan 

 OKm 



Stony Point 



Trawling Sites 

 a Seining Sites 

 • Gillnet Sites 



Figure 1.— Region of Hudson River from which white perch were collected. 



600 



