Figure. Asperoteuthis acanthoderma "pad-like" photophores: A - Histological section through the tentacle stalk and one of the pads. Note the heavy ring of muscles around the base of the pad that allows it to open and expose the slender processes or to close and hide the processes. Photograph A provided by C. C. Lu (copyright © 1998, C. C. Lu). B - Photograph of pads. Note one is open and one is closed and one is partially closed. Photograph from Lu (1977), with permission. C - Drawing of a highly contracted tentacle stalk showing some pads open and some closed. Drawing by J. R. Schroeder.
Asperoteuthis Tentacle-Stalk PhotophoresRichard E. Young and Clyde F. E. Roper
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University of Hawaii, Honolulu, HI, USA
Smithsonian Institution, Washington, D. C., USA
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