. The Biological bulletin. Biology; Zoology; Marine biology. Figure 3. Positioning for an attack and "circling" behavior. (A) The direction from which attacks on copepods are launched changes over several weeks post-hatching, and head-on attacks become common. Direction of attack by Group 1 squid was estimated (to the nearest "hour" of a 12-hour clock face centered on the prey) from those video segments in which orientation of the copepod could be identified. Each filled circle represents one unsuccessful attack; successful attacks are indicated by open circles. The ori
. The Biological bulletin. Biology; Zoology; Marine biology. Figure 3. Positioning for an attack and "circling" behavior. (A) The direction from which attacks on copepods are launched changes over several weeks post-hatching, and head-on attacks become common. Direction of attack by Group 1 squid was estimated (to the nearest "hour" of a 12-hour clock face centered on the prey) from those video segments in which orientation of the copepod could be identified. Each filled circle represents one unsuccessful attack; successful attacks are indicated by open circles. The orientation of each data clock matches that of the copepod in the inset. 1: Days 2-4 post-hatching; 2: Days 26-35; 3: Days 41-43. (B) Before lunging at the prey item, developing squid often maneuvered in a rotating manner as indicated in order to attain position in front of the copepod prey (1). This positioning of the squid commonly elicited an escape response by the copepod (2), followed by a lateral adjustment of position by the squid (3) rotation previously described. This cycle w^ often repeated many times (4-9) before a definitive attack was launched by the squid, and the trajectories of the two animals formed a circular or spiral Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
Size: 1565px × 1597px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectb, booksubjectzoology
