. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMORECEPTION AND BEHAVIOR 249 Reference: «/,./. Bull. 197: 249-250. (October 1949) Antennule Use by the American Lobster, Homarus americanus, During Chemo-orientation in Three Turbulent Odor Plumes Katrin Mjos , Frank Grasso, and Jelle Ateina (Boston University Marine Program, Marine Biological Laboratory, Woods Hole, Massachusetts) The American lobster, Homarus americanus, may use the dy- namics and spatial distribution of chemical signals for guidance to the source of a turbulent odor plume (1, 2, 3). Other studies have
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMORECEPTION AND BEHAVIOR 249 Reference: «/,./. Bull. 197: 249-250. (October 1949) Antennule Use by the American Lobster, Homarus americanus, During Chemo-orientation in Three Turbulent Odor Plumes Katrin Mjos , Frank Grasso, and Jelle Ateina (Boston University Marine Program, Marine Biological Laboratory, Woods Hole, Massachusetts) The American lobster, Homarus americanus, may use the dy- namics and spatial distribution of chemical signals for guidance to the source of a turbulent odor plume (1, 2, 3). Other studies have shown that lobsters orient most efficiently when they are able to use both of their lateral antennules (4, 5). These results lead us to wonder whether the use of antennules by the plume-tracking lobster varies with the type of turbulence the lobster encounters. Such variations would suggest that the lobster is actively sensing rather than merely adjusting to the mechanical stresses presented by turbulence. One way to answer this question is to measure the positions and orientations of the antennules of a lobster as it tracks different turbulent odor plumes. In this report we describe new methods for making these types of measurements and present preliminary results. We observed the plume tracking behavior of 24 locally caught lobsters (~84 mm carapace length) in a flow-through seawater flume (3 m X m and m water depth). During trials, a plume was injected into the background flow ( cm/s) at one of three rates: 1,12, or 120 ml/min. The source was a glass tube ( cm ) positioned parallel to the flume floor, at antennule height (~9 cm), and in the middle of the flume. The downstream distance was selected to lie within the zone where the boundary layer had reached asymptote. A shelter was positioned m directly downstream from the source. The lobsters (tested one at a time) were given 30 min to habituate to the flume and settle in to this shelter before the p
Size: 2330px × 1073px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
