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Are morphological specializations of the hyolingual system in chameleons and salamanders tuned to demands on performance?

Anthony Herrel, Stephen Deban, Vicky Schaerlaeken, Jean-Pierre Timmermans and Dominique Adriaens UGent (2009) Physiological and Biochemical Zoology. 82(1). p.29-39
abstract
Extremely specialized and long tongues used for prey capture have evolved independently in plethodontid salamanders and chameleons. In both systems, the demands on tongue projection are probably similar: to maximize projection velocity and distance. Consequently, many of the design features of the projection system in these two groups have converged to an astonishing degree. Both involve the use of power amplification systems based on helically wound muscle fibers that load internal connective tissue sheets as illustrated in previous studies. Demands imposed on tongue retraction, however, are different to some degree. Although in both groups there is a clear demand for retraction capacity ( given the long projection distances), in chameleons there is an added demand for force because they eat large and heavy prey. As indicated by our data, plethodontid salamanders have extremely long tongue retractors with normal striated muscle. Chameleons, on the other hand, evolved long retractors of the supercontracting type. Interestingly, our data show that at least in chameleons, the extreme design of the tongue in function of prey capture appears to have consequences on prey transport, resulting in an increased dependence on the hyoid. In turn, this has lead to an increase in transport-cycle duration and an increase in the number of cycles needed to transport prey in comparison with closely related agamid lizards. Clearly, extreme morphological specializations are tuned to functional and ecological demands and may induce a reduced performance in other functions performed by the same set of integrated structures.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (proceedingsPaper)
publication status
published
journal title
Physiological and Biochemical Zoology
Physiol. Biochem. Zool.
volume
82
issue
1
pages
29 - 39
Web of Science type
Proceedings paper
Web of Science id
000262090400004
JCR category
ZOOLOGY
JCR impact factor
2.19 (2009)
JCR rank
15/126 (2009)
JCR quartile
1 (2009)
ISSN
1522-2152
DOI
10.1086/589950
language
English
UGent publication?
yes
classification
A1
id
806216
handle
http://hdl.handle.net/1854/LU-806216
date created
2009-12-10 09:51:11
date last changed
2009-12-18 11:28:06
@article{806216,
  abstract     = {Extremely specialized and long tongues used for prey capture have evolved independently in plethodontid salamanders and chameleons. In both systems, the demands on tongue projection are probably similar: to maximize projection velocity and distance. Consequently, many of the design features of the projection system in these two groups have converged to an astonishing degree. Both involve the use of power amplification systems based on helically wound muscle fibers that load internal connective tissue sheets as illustrated in previous studies. Demands imposed on tongue retraction, however, are different to some degree. Although in both groups there is a clear demand for retraction capacity ( given the long projection distances), in chameleons there is an added demand for force because they eat large and heavy prey. As indicated by our data, plethodontid salamanders have extremely long tongue retractors with normal striated muscle. Chameleons, on the other hand, evolved long retractors of the supercontracting type. Interestingly, our data show that at least in chameleons, the extreme design of the tongue in function of prey capture appears to have consequences on prey transport, resulting in an increased dependence on the hyoid. In turn, this has lead to an increase in transport-cycle duration and an increase in the number of cycles needed to transport prey in comparison with closely related agamid lizards. Clearly, extreme morphological specializations are tuned to functional and ecological demands and may induce a reduced performance in other functions performed by the same set of integrated structures.},
  author       = {Herrel, Anthony and Deban, Stephen and Schaerlaeken, Vicky and Timmermans, Jean-Pierre and Adriaens, Dominique},
  issn         = {1522-2152},
  journal      = {Physiological and Biochemical Zoology},
  language     = {eng},
  number       = {1},
  pages        = {29--39},
  title        = {Are morphological specializations of the hyolingual system in chameleons and salamanders tuned to demands on performance?},
  url          = {http://dx.doi.org/10.1086/589950},
  volume       = {82},
  year         = {2009},
}

Chicago
Herrel, Anthony, Stephen Deban, Vicky Schaerlaeken, Jean-Pierre Timmermans, and Dominique Adriaens. 2009. “Are Morphological Specializations of the Hyolingual System in Chameleons and Salamanders Tuned to Demands on Performance?” Physiological and Biochemical Zoology 82 (1): 29–39.
APA
Herrel, A., Deban, S., Schaerlaeken, V., Timmermans, J.-P., & Adriaens, D. (2009). Are morphological specializations of the hyolingual system in chameleons and salamanders tuned to demands on performance? Physiological and Biochemical Zoology, 82(1), 29–39.
Vancouver
1.
Herrel A, Deban S, Schaerlaeken V, Timmermans J-P, Adriaens D. Are morphological specializations of the hyolingual system in chameleons and salamanders tuned to demands on performance? Physiological and Biochemical Zoology. 2009;82(1):29–39.
MLA
Herrel, Anthony, Stephen Deban, Vicky Schaerlaeken, et al. “Are Morphological Specializations of the Hyolingual System in Chameleons and Salamanders Tuned to Demands on Performance?” Physiological and Biochemical Zoology 82.1 (2009): 29–39. Print.