Kaimmer: Hooking behawor of Hippoglossus stenolepis 



875 



Line float 



Electromechanical cable 



enclosure 



Muminuni cage 



Turnhuckle tensioner 



\luniinuni 

 tVame leg 



Surveyor's 

 tape 



Corner protector 



Groundline 



1 r# 



/#?! Clip-on aanuion 



)^' # / 



Baited hook 



teel base frame 



Figure 2 



Camera cage and frame, showing attachment of groundline and baited hooks. 



Observations of behavior 



Appearance and subsequent behavior sequences were 

 recorded for all halibut, including the directions of 

 both appearance and departure in relation to the 

 bottom current. All behaviors were coded as to time 

 at which the behavior either occurred or was initi- 

 ated, to the nearest second. Behavior codes were 

 modified from those used by Ferno et al. ( 1986). For 

 species other than halibut, only bites and bookings 



were recorded. Unless otherwise specified, code de- 

 scriptions and frequencies refer to halibut only. 



Behavior definitions 



The word "observed" was recorded upon the first 

 appearance of a halibut, along with its approach di- 

 rection in relation to the bottom current, and a num- 

 ber was assigned to the fish in order to identify fu- 

 ture observations on that fish. 



