FN Archimer Export Format
PT J
TI Sound detection by the American lobster (Homarus americanus)
BT 
AF Jezequel, Youenn
   Jones, Ian T
   Bonnel, Julien
   CHAUVAUD, Laurent
   Atema, Jelle
   Mooney, T. Aran
AS 1:1,2;2:2,3;3:4;4:1;5:5;6:3;
FF 1:;2:;3:;4:;5:;6:;
C1 Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 CNRS, UBO, IRD, Ifremer, LIA BeBEST, Institut Universitaire Européen de la Mer (IUEM), rue Dumont D'Urville, 29280 Plouzané, France
   Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
   Massachusetts Institute of Technology-Woods Hole Oceanographic Institution Joint Program in Oceanography/Applied Ocean Science and Engineering, Cambridge, MA 02543, USA
   Applied Ocean Physics and Engineering Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
   Boston University Marine Program, 5 Cummington Street, BRB 307, Boston, MA 02215, USA
C2 CNRS, FRANCE
   WHOI, USA
   MIT, USA
   WHOI, USA
   UNIV BOSTON, USA
UM LEMAR
IN WOS Cotutelle UMR
   copubli-int-hors-europe
IF 3.308
TC 17
UR https://archimer.ifremer.fr/doc/00688/80058/83063.pdf
   https://archimer.ifremer.fr/doc/00688/80058/83119.pdf
LA English
DT Article
DE ;Marine invertebrate;Crustacean;Hearing;Auditory evoked potential;Acoustic communication
AB Although many crustaceans produce sounds, their hearing abilities and mechanisms are poorly understood, leaving uncertainties regarding whether or how these animals use sound for acoustic communication. Marine invertebrates lack gas-filled organs required for sound pressure detection, but some of them are known to be sensitive to particle motion. Here, we examined whether the American lobster (Homarus americanus) could detect sound and subsequently sought to discern the auditory mechanisms. Acoustic stimuli responses were measured using auditory evoked potential (AEP) methods. Neurophysiological responses were obtained from the brain using tone pips between 80 and 250 Hz, with best sensitivity at 80–120 Hz. There were no significant differences between the auditory thresholds of males and females. Repeated controls (recordings from deceased lobsters, moving electrodes away from the brain and reducing seawater temperature) indicated the evoked potentials' neuronal origin. In addition, AEP responses were similar before and after antennules (including statocysts) were ablated, demonstrating that the statocysts, a long-proposed auditory structure in crustaceans, are not the sensory organs responsible for lobster sound detection. However, AEPs could be eliminated (or highly reduced) after immobilizing hairfans, which cover much of lobster bodies. These results suggest that these external cuticular hairs are likely to be responsible for sound detection, and imply that hearing is mechanistically possible in a wider array of invertebrates than previously considered. Because the lobsters' hearing range encompasses the fundamental frequency of their buzzing sounds, it is likely that they use sound for intraspecific communication, broadening our understanding of the sensory ecology of this commercially vital species. The lobsters' low-frequency acoustic sensitivity also underscores clear concerns about the potential impacts of anthropogenic noise. 
PY 2021
PD MAR
SO Journal Of Experimental Biology
SN 0022-0949
PU The Company of Biologists
VL 224
IS 6
UT 000636462900019
DI 10.1242/jeb.240747
ID 80058
ER

EF