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Functional
decoupling of anatomical systems occurs when more than
one system serves the same function. This results in duplication
of function. In these cases, one of the mechanisms formerly
used to perform the task in question is free from fitness
pressures and may develop a new use, leading to a new
adaptive behavior. Functional morphologists seek to study
these unique systems for their evolutionary implications,
as well as their effects on survivorship. |
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In osteoglossomorph (bony tongue) fishes, a unique feeding
mechanism known as the tongue-bite apparatus (TBA) has
evolved through the decoupling of a duplicated connection
between the pectoral girdle and the bony tongue. This
tongue bite is used in a novel chewing behavior, raking,
to shred and disable prey. My research focuses on raking
behavior in two osteoglossomorph fishes Scleropages
formosus and Scleropages jardinii. I am
interested in whether this chewing behavior is different
between these two species and why? Ultimately, my work
will contribute to Dr. Sanford’s body of research,
which will compare raking across the subdivision Osteoglossomorpha. |
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