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Effects of jaw adductor hypertrophy on buccal expansions during feeding of air breathing catfishes (Teleostei, Clariidae)

(2004) ZOOMORPHOLOGY. 123(2). p.81-93
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Abstract
Some species of Clariidae (air breathing catfishes) have extremely well developed (hypertrophied) jaw closing muscles that increase the maximal biting force of these species. As these enlarged jaw muscles tightly cover the suspensoria, which are firmly connected to the neurocranium, we expect diminished lateral expansions during suction for species with hypertrophied jaw muscles. In turn, this could imply a reduced suction performance for these species. Compared to Clarias gariepinus, which has relatively small jaw closers, Clariallabes longicauda shows a clear hypertrophy of the jaw adductors. A kinematic analysis of prey capture in these two species is presented here. As predicted, Clariallabes longicauda shows less lateral expansion (average abduction of the hyoids of 19.0degrees) than Clarias gariepinus (abduction of 31.1degrees). However, our data indicate that the decrease in lateral expansion capacity in the species with excessive adductor development is compensated for by a larger and faster ventral expansion of the buccal cavity by depression of the hyoid.
Keywords
catfish, feeding, functional morphology, jaw adductors, hypertrophy, cranial expansions, ASTATOTILAPIA-ELEGANS TELEOSTEI, PREY-CAPTURE KINEMATICS, CLARIAS-GARIEPINUS, CRANIAL MORPHOLOGY, CICHLID FISHES, SILURIFORMES, SUCTION, SILUROIDEI, MECHANISMS, ADAPTATIONS

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MLA
Van Wassenbergh, Sam, Anthony Herrel, Dominique Adriaens, et al. “Effects of Jaw Adductor Hypertrophy on Buccal Expansions During Feeding of Air Breathing Catfishes (Teleostei, Clariidae).” ZOOMORPHOLOGY 123.2 (2004): 81–93. Print.
APA
Van Wassenbergh, Sam, Herrel, A., Adriaens, D., & Aerts, P. (2004). Effects of jaw adductor hypertrophy on buccal expansions during feeding of air breathing catfishes (Teleostei, Clariidae). ZOOMORPHOLOGY, 123(2), 81–93.
Chicago author-date
Van Wassenbergh, Sam, Anthony Herrel, Dominique Adriaens, and Peter Aerts. 2004. “Effects of Jaw Adductor Hypertrophy on Buccal Expansions During Feeding of Air Breathing Catfishes (Teleostei, Clariidae).” Zoomorphology 123 (2): 81–93.
Chicago author-date (all authors)
Van Wassenbergh, Sam, Anthony Herrel, Dominique Adriaens, and Peter Aerts. 2004. “Effects of Jaw Adductor Hypertrophy on Buccal Expansions During Feeding of Air Breathing Catfishes (Teleostei, Clariidae).” Zoomorphology 123 (2): 81–93.
Vancouver
1.
Van Wassenbergh S, Herrel A, Adriaens D, Aerts P. Effects of jaw adductor hypertrophy on buccal expansions during feeding of air breathing catfishes (Teleostei, Clariidae). ZOOMORPHOLOGY. 2004;123(2):81–93.
IEEE
[1]
S. Van Wassenbergh, A. Herrel, D. Adriaens, and P. Aerts, “Effects of jaw adductor hypertrophy on buccal expansions during feeding of air breathing catfishes (Teleostei, Clariidae),” ZOOMORPHOLOGY, vol. 123, no. 2, pp. 81–93, 2004.
@article{294184,
  abstract     = {Some species of Clariidae (air breathing catfishes) have extremely well developed (hypertrophied) jaw closing muscles that increase the maximal biting force of these species. As these enlarged jaw muscles tightly cover the suspensoria, which are firmly connected to the neurocranium, we expect diminished lateral expansions during suction for species with hypertrophied jaw muscles. In turn, this could imply a reduced suction performance for these species. Compared to Clarias gariepinus, which has relatively small jaw closers, Clariallabes longicauda shows a clear hypertrophy of the jaw adductors. A kinematic analysis of prey capture in these two species is presented here. As predicted, Clariallabes longicauda shows less lateral expansion (average abduction of the hyoids of 19.0degrees) than Clarias gariepinus (abduction of 31.1degrees). However, our data indicate that the decrease in lateral expansion capacity in the species with excessive adductor development is compensated for by a larger and faster ventral expansion of the buccal cavity by depression of the hyoid.},
  author       = {Van Wassenbergh, Sam and Herrel, Anthony and Adriaens, Dominique and Aerts, Peter},
  issn         = {0720-213X},
  journal      = {ZOOMORPHOLOGY},
  keywords     = {catfish,feeding,functional morphology,jaw adductors,hypertrophy,cranial expansions,ASTATOTILAPIA-ELEGANS TELEOSTEI,PREY-CAPTURE KINEMATICS,CLARIAS-GARIEPINUS,CRANIAL MORPHOLOGY,CICHLID FISHES,SILURIFORMES,SUCTION,SILUROIDEI,MECHANISMS,ADAPTATIONS},
  language     = {eng},
  number       = {2},
  pages        = {81--93},
  title        = {Effects of jaw adductor hypertrophy on buccal expansions during feeding of air breathing catfishes (Teleostei, Clariidae)},
  url          = {http://dx.doi.org/10.1007/s00435-003-0090-3},
  volume       = {123},
  year         = {2004},
}

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