using red light for in situ observations of deep-sea fishes开题资料.pdf

ARTICLE IN PRESS
Deep-Sea Research I 52 (2005) 2077–2085

Using red light for in situ observations of deep-sea fishes
. Widdera,Ã, . Robisonb, . Reisenbichlerb, . Haddockb
aHarbor Branch Oceanographic Institution, 5600 US 1 North, Fort Pierce, FL 34946, USA
bMonterey Bay Aquarium Research Institute, 7700 Sandholdt Rd. Moss Landing, CA 95039, USA
Received 13 December 2004; received in revised form 6 June 2005; accepted 9 June 2005
Available online 11 August 2005
Abstract
Observations of animals in the deep ocean typically require the use of bright lights that can damage eyes and disrupt
normal behaviors. Although the use of infrared light is an effective means of unobtrusive observation on land, it is far
less effective in the ocean where long wavelength light is rapidly attenuated by seawater. Here we describe in situ
observations of the behavior of the sablefish, Anoplopoma fimbria, around a baited site under different lighting
conditions. Fish were observed with low-light-level imaging that had adequate sensitivity to compensate for the
attenuation losses associated with the use of long wavel