10.5061/DRYAD.3H9S8
Vergara, Daniela
Indiana University Bloomington
University of Colorado Boulder
Fuentes, Jesualdo A.
Indiana University Bloomington
Stoy, Kayla S.
Indiana University Bloomington
Lively, Curtis M.
Indiana University Bloomington
Data from: Evaluating shell variation across different populations of a
freshwater snail
Dryad
dataset
2017
Potamopyrgus antipodarum
New Zealand mudsnail
National Science Foundation
https://ror.org/021nxhr62
DDIG 1110437
2017-11-03T00:00:00Z
2017-11-03T00:00:00Z
en
https://doi.org/10.1080/13235818.2016.1253446
1004717 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The freshwater snail Potamopyrgus antipodarum has become a model system
for studying invasion ecology, host–parasite coevolution, the maintenance
of sexual reproduction and ecotoxicology. One understudied aspect of this
snail is the variation in morphology within and among populations, which
could provide insights into ecological differences across its native
range. In this study of 17 New Zealand lake populations of P. antipodarum
we used linear measurements and geometric morphometrics to compare several
aspects of shell size and shape. We found that, except for those from Lake
Te Anau, most lake populations of P. antipodarum differ slightly in shape,
but differ significantly in size and in the presence of spines, where
larger and spinier snails are found in deeper regions. These striking
distinctions in size and shell armature, but not in shape, suggest that
the various components of form are under different selective regimes.
Snails from Lake Te Anau are different in both shape and size, implying
that this population is diverging from the rest of the species in multiple
ways, making it an interesting study population for further research.
rawdata1_shell_variation_freshwater_snailexcel spreadsheet with landmark
scores for the shell and operucula, size and spine information for all
snails in this
study.raw_data_shell_variation_freshwater_snail.xlsxrawdata2_shell_variation_freshwater_snailshell landmarks for all snails in this analysisrawdata3_shell_variation_freshwater_snaillandmark contour for the opercula of all of the snails analyzed in this study.
New Zealand
South Islan
South Island