Advanced search
1 file | 799.00 KB Add to list

Functional diversity in biters : the evolutionary morphology of the oral jaw system in pacus, piranhas and relatives (Teleostei: Serrasalmidae)

Author
Organization
Abstract
Serrasalmid fishes form a highly specialized group of biters that show a large trophic diversity, ranging from pacus able to crush seeds to piranhas capable of cutting flesh. Their oral jaw system has been hypothesized to be forceful, but variation in bite performance and morphology with respect to diet has not previously been investigated. We tested whether herbivorous species have higher bite forces, larger jaw muscles and more robust jaws than carnivorous species. We measured in vivo and theoretical bite forces in 27 serrasalmid species. We compared the size of the adductor mandibulae muscle, the jaw mechanical advantages, the type of jaw occlusion, and the size and shape of the lower jaw. We also examined the association between bite performance and functional morphological traits of the oral jaw system. Contrary to our predictions, carnivorous piranhas deliver stronger bites than their herbivorous counterparts. The size of the adductor mandibulae muscle varies with bite force and muscles are larger in carnivorous species. Our study highlights an underestimated level of functional morphological diversity in a fish group of exclusive biters. We provide evidence that the trophic specialization towards carnivory in piranhas results from changes in the configuration of the adductor mandibulae muscle and the lower jaw shape, which have major effects on bite performance and bite strategy.
Keywords
adductor mandibulae muscle, bite force, diet, evolution, functional morphology, geometric morphometrics, lower jaw, trophic diversification, CRANIAL MORPHOLOGY, HEAD SIZE, THEORETICAL CALCULATIONS, FORCE PERFORMANCE, FISHES TELEOSTEI, MUSCLE SIZE, BODY-SIZE, R PACKAGE, DIET, CHARACIFORMES

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 799.00 KB

Citation

Please use this url to cite or link to this publication:

MLA
Huby, Alessia, et al. “Functional Diversity in Biters : The Evolutionary Morphology of the Oral Jaw System in Pacus, Piranhas and Relatives (Teleostei: Serrasalmidae).” BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, vol. 127, no. 4, 2019, pp. 722–41, doi:10.1093/biolinnean/blz048.
APA
Huby, A., Lowie, A., Herrel, A., Vigouroux, R., Frédérich, B., Raick, X., … Parmentier, E. (2019). Functional diversity in biters : the evolutionary morphology of the oral jaw system in pacus, piranhas and relatives (Teleostei: Serrasalmidae). BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, 127(4), 722–741. https://doi.org/10.1093/biolinnean/blz048
Chicago author-date
Huby, Alessia, Aurélien Lowie, Anthony Herrel, Régis Vigouroux, Bruno Frédérich, Xavier Raick, Gregório Kurchevski, Alexandre Lima Godinho, and Eric Parmentier. 2019. “Functional Diversity in Biters : The Evolutionary Morphology of the Oral Jaw System in Pacus, Piranhas and Relatives (Teleostei: Serrasalmidae).” BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 127 (4): 722–41. https://doi.org/10.1093/biolinnean/blz048.
Chicago author-date (all authors)
Huby, Alessia, Aurélien Lowie, Anthony Herrel, Régis Vigouroux, Bruno Frédérich, Xavier Raick, Gregório Kurchevski, Alexandre Lima Godinho, and Eric Parmentier. 2019. “Functional Diversity in Biters : The Evolutionary Morphology of the Oral Jaw System in Pacus, Piranhas and Relatives (Teleostei: Serrasalmidae).” BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 127 (4): 722–741. doi:10.1093/biolinnean/blz048.
Vancouver
1.
Huby A, Lowie A, Herrel A, Vigouroux R, Frédérich B, Raick X, et al. Functional diversity in biters : the evolutionary morphology of the oral jaw system in pacus, piranhas and relatives (Teleostei: Serrasalmidae). BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY. 2019;127(4):722–41.
IEEE
[1]
A. Huby et al., “Functional diversity in biters : the evolutionary morphology of the oral jaw system in pacus, piranhas and relatives (Teleostei: Serrasalmidae),” BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, vol. 127, no. 4, pp. 722–741, 2019.
@article{8614965,
  abstract     = {Serrasalmid fishes form a highly specialized group of biters that show a large trophic diversity, ranging from pacus able to crush seeds to piranhas capable of cutting flesh. Their oral jaw system has been hypothesized to be forceful, but variation in bite performance and morphology with respect to diet has not previously been investigated. We tested whether herbivorous species have higher bite forces, larger jaw muscles and more robust jaws than carnivorous species. We measured in vivo and theoretical bite forces in 27 serrasalmid species. We compared the size of the adductor mandibulae muscle, the jaw mechanical advantages, the type of jaw occlusion, and the size and shape of the lower jaw. We also examined the association between bite performance and functional morphological traits of the oral jaw system. Contrary to our predictions, carnivorous piranhas deliver stronger bites than their herbivorous counterparts. The size of the adductor mandibulae muscle varies with bite force and muscles are larger in carnivorous species. Our study highlights an underestimated level of functional morphological diversity in a fish group of exclusive biters. We provide evidence that the trophic specialization towards carnivory in piranhas results from changes in the configuration of the adductor mandibulae muscle and the lower jaw shape, which have major effects on bite performance and bite strategy.},
  author       = {Huby, Alessia and Lowie, Aurélien and Herrel, Anthony and Vigouroux, Régis and Frédérich, Bruno and Raick, Xavier and Kurchevski, Gregório and Godinho, Alexandre Lima and Parmentier, Eric},
  issn         = {0024-4066},
  journal      = {BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY},
  keywords     = {adductor mandibulae muscle,bite force,diet,evolution,functional morphology,geometric morphometrics,lower jaw,trophic diversification,CRANIAL MORPHOLOGY,HEAD SIZE,THEORETICAL CALCULATIONS,FORCE PERFORMANCE,FISHES TELEOSTEI,MUSCLE SIZE,BODY-SIZE,R PACKAGE,DIET,CHARACIFORMES},
  language     = {eng},
  number       = {4},
  pages        = {722--741},
  title        = {Functional diversity in biters : the evolutionary morphology of the oral jaw system in pacus, piranhas and relatives (Teleostei: Serrasalmidae)},
  url          = {http://dx.doi.org/10.1093/biolinnean/blz048},
  volume       = {127},
  year         = {2019},
}

Altmetric
View in Altmetric
Web of Science
Times cited: