Evolution of Biting in Marine Angelfishes
Author Information
Author(s): Konow Nicolai, Bellwood David R.
Primary Institution: School of Marine and Tropical Biology, James Cook University
Hypothesis
The feeding apparatus of marine angelfishes is characterized by a high level of structural diversity, which is reflected by clear differences in biting kinematics across the family.
Conclusion
Marine angelfishes have evolved a unique 'grab-and-tearing' feeding method that allows them to access a wide range of food items despite having low structural and functional disparity in their feeding apparatus.
Supporting Evidence
- Angelfishes can access many structurally complex benthic surfaces that other biters likely cannot exploit.
- The feeding apparatus morphology appeared to be conserved despite clear interspecific differences in gut morphology.
- Only one clade, the pygmy angelfishes, showed functional departure from the generalized feeding pattern.
Takeaway
Marine angelfishes have special jaws that help them eat tough food from the ocean floor, and they can do this in many different ways.
Methodology
The study involved collecting and analyzing the feeding kinematics and gut morphology of eight species of marine angelfishes from the Great Barrier Reef.
Limitations
The study's findings are based on a limited number of species sampled, which may not fully represent the diversity within the family.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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