J. M. Lovell, M. M. Findlay, G. M. Harper and R. M. Moate (2007): The
polarization of hair cells from the inner ear of the
lesser spotted dogfish Scyliorhinus canicula. J. Fish Biol, 70, 362-373
Abstract: The polarization of hair cells from the end organs of the inner
ear from the lesser spotted dogfish Scyliorhinus canicula from the order
Carcharhiniforms (ground sharks) was studied using a scanning electron
microscope (SEM), revealing arrays of hair cells with diverse orientations
on each of the sensory epithelia. The greatest numbers of hair cells were
found on the utricular epithelium and orientated on the horizontal plane,
whilst the smallest number were found on the anterior macula neglecta and
orientated on the vertical plane. Examination of the posterior macula
neglecta revealed a dense profusion of c. 500 000 individual elongate
structures, each resembling long microvilli, a finding not previously
described in elasmobranch auditory
physiology.
------------------------------------
University of Vienna, Dept. of Behavioural Biology
Sonja Amoser
PhD Student, Research Associate
Althanstrasse 14
1090 Vienna
Austria
tel: +43 (1) 4277 54467
fax: +43 (1) 4277 54506
mobile: +43 (664) 500 61 06
------------------------------------
|