behavior/neurological
head bobbing
(
J:77358
)
• described as vigorous
|
• no behavioral responses to sound
|
hearing/vestibular/ear
• no evidence of formation of inner ear hair cells at P0
|
• undercoiled cochlea
|
• rudimentary development
|
small utricle
(
J:98458
)
• absent ampullae and sensory cristae
|
• no cochlear nerve response at any frequency
|
pigmentation
nervous system
• no evidence of formation of inner ear hair cells at P0
|
• no cochlear nerve response at any frequency
|
integument
• reduced number of total awl hairs, and reduced frequency of black awls
|
• monotrich hairs showed long subapical pheomelanin bands
|