. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. -100 100 200 300 400 Distance from source (cm) 500 100. -100 100 200 300 400 Distance from source (cm) 500 Figure 1. Individual tracks under plume conditions with continuous release (A, N = 10) and deliberate gaps of 5 cm (B. N = 7). and 10 cm (C. N = 4). Solid lines indicate approximate boundaries of the odor plume, as visualized with dve. Odor source is located at (\ = 0 cm, y = 0 cm, z = 9 cm); shelter is located at (\ = 550 on, y = 0 cm). phase. 3 to 6 m from the source). Under continuous plume condi- tions (Fig. 1A), wa
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. -100 100 200 300 400 Distance from source (cm) 500 100. -100 100 200 300 400 Distance from source (cm) 500 Figure 1. Individual tracks under plume conditions with continuous release (A, N = 10) and deliberate gaps of 5 cm (B. N = 7). and 10 cm (C. N = 4). Solid lines indicate approximate boundaries of the odor plume, as visualized with dve. Odor source is located at (\ = 0 cm, y = 0 cm, z = 9 cm); shelter is located at (\ = 550 on, y = 0 cm). phase. 3 to 6 m from the source). Under continuous plume condi- tions (Fig. 1A), walking speed then increased during the subse- quent tracking phase (1 to 3 m) and decreased again as the animal approached the odor source (0 to 1 m). During the tracking phase and final approach, lobsters mostly stayed within the plume bound- aries (20% of animals spent more than 5 s outside of the suggested plume area). Overall, the 10 lobsters that successfully tracked under continuous plume conditions (Fig. 1A) seemed to show a straighter approach to the source (higher linearity index; 68% had a linearity index equal to or greater than ) than when tested under intermittent plume conditions (Fig. IB. C) (57% had a linearity index equal to or greater than ). In contrast, in plumes with deliberate gaps (Fig. IB, C), walking speed re- mained constant with distance from the source and increased during the final approach; of animals walked outside of the plume boundaries for at least 5 s during the tracking and final approach phases. Mean walking speed decreased with an increase in gap length. Most lobsters that did not locate the odor source in plumes with deliberate gaps walked along the wall or did not leave the shelter. Two lobsters showed tracking behav-. 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 origina
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
