Do constructional constraints influence cyprinid (Cyprinidae: Leuciscinae) craniofacial coevolution?
Article first published online: 18 MAR 2011
© 2011 The Linnean Society of London
Biological Journal of the Linnean Society
Volume 103, Issue 1, pages 136–146, May 2011
How to Cite
HULSEY, C. D. and HOLLINGSWORTH JR, P. R. (2011), Do constructional constraints influence cyprinid (Cyprinidae: Leuciscinae) craniofacial coevolution?. Biological Journal of the Linnean Society, 103: 136–146. doi: 10.1111/j.1095-8312.2011.01628.x
- Issue published online: 18 APR 2011
- Article first published online: 18 MAR 2011
- Received 19 August 2010; revised 8 December 2010; accepted for publication 8 December 2010
- freshwater fish;
- North America;
- phylogenetic comparative method
Constraints on form may determine how organisms diversify. As a result of competition for the limited space within the body, investment in adjacent structures could represent an evolutionary compromise. For example, evolutionary trade-offs resulting from limited space in the head could have influenced how the sizes of the jaw muscle, as well as the eyes, evolved in North American cyprinid fishes. To test the evolutionary independence of the size of these structures, we measured the mass of the three major adductor mandibulae muscles and determined the eye volume in 36 cyprinid species. Using a novel phylogeny, we tested the hypotheses that the sizes of these four structures were negatively correlated with each other during cyprinid evolution. We found that evolutionary change in the adductor mandibulae muscles was generally positively and/or not correlated, suggesting that competition for space among cyprinid jaw muscles has not influenced their evolution. However, there was a negative relationship between mass of adductor mandibulae 1 and eye volume, indicating that change in these physically adjacent structures is consistent with an evolutionary constructional constraint. © 2011 The Linnean Society of London, Biological Journal of the Linnean Society, 2011, 103, 136–146.