dc.contributor.author |
Bakkes, D.K. (Deon)
|
|
dc.contributor.author |
Snyman, Louwtjie P.
|
|
dc.contributor.author |
Pirk, Christian Walter Werner
|
|
dc.contributor.author |
Sole, Catherine L.
|
|
dc.date.accessioned |
2016-08-04T08:27:44Z |
|
dc.date.issued |
2015-12 |
|
dc.description.abstract |
Morphometric dissimilarity metrics aim
to quantify the variation between compared specimens
such that inferences about their relatedness and alpha
taxonomy can be made. Recently, the technique has
developed metrics that purport to quantify shape dissimilarity
between specimens—employing the use of
least squares regression analysis. These metrics have
been well applied by studies in the hominin fossil
record with an arguably unsubstantiated backing for
the technique. Originally postulated was the log10 sem
metric which subsequently led to the standard error
test of the null hypothesis metric. Following this, the
standard deviation of logged ratios (SLR) metric arose
as a pairwise dissimilarity metric that constrains the
regression to a zero-intercept, that is, a significant
development in the robustness of the technique. This
metric was tested on extant primates in order to evaluate
its effectiveness alongside the two other metrics. It
was shown to be the most reliable for comparisons
between specimens of primates, but was unable to discriminate
between heterospecific and conspecific comparisons.
Arguably, an alternative model organism with
which to compare the technique is lacking. This study
considers shape dissimilarity metrics with respect to a
group of nonmammalian organisms (mantidflies) and
tests the metrics against three lines of evidence (morphology,
CO1-DNA, and geographic distribution) that
can delimit the species-level taxonomy for the group. It
is shown that the metrics are unable to discriminate
between pairwise comparisons of closely related species,
resulting in biologically erroneous groupings, and
contradicting the groupings derived from morphological,
CO1-DNA, and distributional comparisons. It is
thus asserted that the technique is unsuitable for use
in alpha taxonomy as an additional line of evidence in
mantidflies. It is further supposed that morphometrics
in general should be employed with caution in studies
of evolutionary history as phylogeny is not the only information
contained within morphometric data. |
en_ZA |
dc.description.department |
Zoology and Entomology |
en_ZA |
dc.description.embargo |
2016-12-31 |
|
dc.description.librarian |
hb2016 |
en_ZA |
dc.description.sponsorship |
National Research Foundation (NRF) |
en_ZA |
dc.description.uri |
http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4687 |
en_ZA |
dc.identifier.citation |
Bakkes, DK, Snyman, LP, Pirk, CWW & Sole, CL 2015, 'Performance of pairwise shape dissimilarity morphometrics on non-mammalian taxa (Insecta : Neuroptera : Mantispidae)', Journal of Morphology, vol. 276, no. 12, pp. 1482-1494. |
en_ZA |
dc.identifier.issn |
0362-2525 (print) |
|
dc.identifier.issn |
1097-4687 (online) |
|
dc.identifier.other |
10.1002/jmor.20436 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/56184 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Wiley |
en_ZA |
dc.rights |
© 2015 Wiley Periodicals Inc. This is the pre-peer reviewed version of the following article : Performance of pairwise shape dissimilarity morphometrics on non-mammalian taxa (Insecta : Neuroptera : Mantispidae in Journal of Morphology, vol. 276, no. 12, pp. 1482-1494, 2015. doi : 10.1002/jmor.20436. The definite version is available at : http://onlinelibrary.wiley.comjournal/10.1002/(ISSN)1097-4687. |
en_ZA |
dc.subject |
Log sem |
en_ZA |
dc.subject |
Standard error test of the null hypothesis |
en_ZA |
dc.subject |
Mantispid |
en_ZA |
dc.subject |
Standard deviation of logged ratios (SLR) |
en_ZA |
dc.subject |
Deoxyribonucleic acid (DNA) |
en_ZA |
dc.subject |
CO1-DNA |
en_ZA |
dc.title |
Performance of pairwise shape dissimilarity morphometrics on non-mammalian taxa (Insecta : Neuroptera : Mantispidae) |
en_ZA |
dc.type |
Postprint Article |
en_ZA |