Changes in otolith area: sensory area ratio with body size and depth |
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Authors: | Antoni Lombarte |
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Institution: | (1) Institut de Ciéncies del Mar (CSIC), Passeig Nacional s/n, 08039 Barcelona, Catalonia, Spain |
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Abstract: | Synopsis The ratio between the sensory areas of the sulcus acusticus and the sagittal otolith (S : O ratio) in the species Merluccius capensis and M. paradoxus was analyzed using a digital image processing system. Sagittal growth in both species is negatively allometric with respect
to total fish length but is more negative in the deeper-dwelling species, Merluccius paradoxus. In contrast, the sulcus acusticus undergoes a relative increase in size, that is, the S : O ratio increases with fish length.
There was a clear relationship between the increase in the S : 0 ratio and depth. |
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Keywords: | Merluccius capensis M paradoxus Depth Sulcus acusticus Fishes Gadiformes |
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