Researchers Uncover Surprising Diversity in Sharks’ Inner Ears
Researchers used CT scanning to analyze the inner ears of 10 shark species, discovering that ear structure is more closely linked to evolutionary history than to habitat or diet. This finding challenges previous assumptions that environmental factors were the primary drivers of sensory organ evolution in sharks.
Why it matters
Understanding the evolutionary development of shark sensory systems provides deeper insight into vertebrate biology and the long-term adaptation of marine life.
Biological Science Professor Allison Bronson uses CT scanning to create detailed images of structures inside specimen.
The researched used CT scanning to ‘digitally dissect’ the heads of 10 species of sharks.
Newswise — A new study of shark anatomy suggests the shape of their inner ears is far more variable than expected, and this variation could have more to do with their evolutionary history than where they live or what they eat.
The study, recently published in The Anatomical Record , examined the ears of 10 species of sharks, revealing surprising differences in the shape and structure of an organ that helps them hear and maintain balance.
The research team, led by Cal Poly Humboldt students Kaci Dodd and Isamar Lopez-Argueta, and Biological Sciences Professor Allison Bronson, used CT scanning to digitally dissect the heads of 10 species of sharks and examine their inner-ear structures in three dimensions.
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