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Re: Limb elements in flying vertebrates: pterosaurs, birds and bats.

Sorry for the truncated text.

Luis Azevedo Rodrigues

On 06-10-2011 10:05, Luis Azevedo Rodrigues wrote:

Good morning,

A shameless self-promotion justified by the closeness of the subject:

“Flying in Compositional Morphospaces: evolution of limb proportions in flying vertebrates.”

Rodrigues, L.A., Daunis-i-Estadella, J., Mateu-Figueras, G. and Thió-Henestrosa, S. (2011)

pp. 235-254 In: Compositional Data Analysis: theory and applications. Pawlowsky-Glahn, V. and Buccianti, A. (Eds.). John Wiley & Sons, London.

Download the Final Proof at http://goo.gl/ttC0y


Luis Azevedo Rodrigues

Luis Azevedo Rodrigues
Paleontologist (PhD)/Science communicator/Teacher
Publico Newspaper invited blog/Science Blogs Brazil
Ciencia Ao Natural -http://cienciaaonatural.net/
Twitter -http://twitter.com/CienAoNatural

On 06-10-2011 07:39, bh480@scn.org wrote:
From: Ben Creisler

A new paper that apparently has not been mentioned yet:

BELL, E., ANDRES, B. and GOSWAMI, A. (2011).
Integration and dissociation of limb elements in flying vertebrates: a
comparison of pterosaurs, birds and bats.
Journal of Evolutionary Biology (advance online publication)
doi: 10.1111/j.1420-9101.2011.02381.x

Flapping flight has evolved independently in three vertebrate clades:
pterosaurs, birds and bats. Each clade has a unique flight mechanism
involving different elements of the forelimb. Here, patterns of limb
integration are examined using partial correlation analysis within species
and matrix correlation analysis across species to test whether the
evolution of flapping flight has involved developmental dissociation of the
serial homologues in the fore- and hind limb in each clade. Our sample
included seven species of birds, six species of bats, and three species of
pterosaurs for which sufficient sample sizes were available. Our results
showed that, in contrast to results previously reported for quadrupedal
mammals, none of the three clades demonstrated significant integration
between serial homologues in the fore- and hind limb. Unexpectedly, there
were few consistent patterns of within-forelimb correlations across each
clade, suggesting that wing integration is not strongly constrained by
functional relationships. However, there was significant integration within the hind limbs of pterosaurs and birds, but not bats, possibly reflecting the differing functions of hind limbs (e.g. upright support vs. suspension)
in these clades.

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Luis Azevedo Rodrigues
Paleontologist (PhD)/Science communicator/Teacher
Publico Newspaper invited blog/Science Blogs Brazil
Ciencia Ao Natural - http://cienciaaonatural.net/
Twitter - http://twitter.com/CienAoNatural