Data from: Functional coupling constrains craniofacial diversification in Lake Tanganyika cichlids

Masahito Tsuboi, Alejandro Gonzalez-Voyer & Niclas Kolm
Functional coupling, where a single morphological trait performs multiple functions, is a universal feature of organismal design. Theory suggests that functional coupling may constrain the rate of phenotypic evolution, yet empirical tests of this hypothesis are rare. In fish, the evolutionary transition from guarding the eggs on a sandy/rocky substrate (i.e. substrate guarding) to mouthbrooding introduces a novel function to the craniofacial system and offers an ideal opportunity to test the functional coupling hypothesis. Using...
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