Journal: Animal Behaviour

Article Title: Visual noise from caustic flicker does not affect the hunting success of cuttlefish

doi: 10.1016/j.anbehav.2023.06.002

Figure Lengend Snippet: Figure 1. Experimental protocol. (a-d) Different definition levels of the caustic animations. (a) Control (same-intensity greyscale image). (b) Low definition. (c) Medium definition. (d) High definition. (e-f) Schematic diagram of the experimental design. (e) Top view. (f) Frontal view. The brown line at the tank bottom in (f) depicts the printed photographs of a homogeneous sediment sample. C ¼ Camera; G ¼ Grass (artificial turf); P ¼ Projector; T ¼ Tubes, used to introduce prey items. (g) Timeline for any of the 12 caustic playbacks. All caustic playbacks started with a 10 min long greyscale acclimatization period, followed by a 30 s long transition (T) period inducing an 11 min long segment with the corresponding caustic condition. The shrimp was introduced into the tank after 11 min 30 s (blue dashed line), resulting in a 10 min period for the cuttlefish to catch the shrimp under a caustic stimulus. (h) Timeline for the control playback. This playback consisted entirely of a greyscale image displayed throughout the trial.

Article Snippet: Spectral irradiance (mW/cm2 per nm) of the 12 caustic playbacks as well as the control greyscale image (uint8 value 1⁄4 87), measured with a spectrometer (USB2000) coupled to a 400 mm bare optic fibre (R400-7-UV-VIS) and calibrated using a calibrated light source (DH-2000; all Ocean Insight, Orlando, FL, U.S.A.) Figure A2.

Techniques: Control, Introduce