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Biogeographic filters of function and phylogeny determine morphological disparity with latitude Project ID: 00000C692 Public
318 Media · 296 Specimens · Managed by: Katie Collins

Using high-resolution 3D CT scans to compare the shell morphology in marine bivalve faunas of tropical Florida Keys and boreal Gulf of Maine, we find that regional morphological shifts between whole faunas and in subgroups of faunas conform to hypothesized effects of resource seasonality (Valentine 1971, Pigot et al. 2015) and predation intensity (Vermeij 1978, 1987), albeit with a change in total variance rather than a simple directional shift, but not to predicted effects of carbonate saturation/calcification costs (Watson et al 2012). Loss of functional groups and family-level clades at high latitudes, rather than latitudinal shifts in morphology within widespread functions and families, largely drives the faunal contrast. Latitudinal differences in morphology thus represent a complex integration of phylogenetic and ecological factors that can only be captured in multivariate analyses.

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Identifier Taxonomy Total Media Date Added Source
FMNH:Invertebrate Zoology:6140 Palliolum striatum 1 2019-08-01  iDigBio
nhm-uk:invertebrate zoology:20180338 Yoldiella frigida 1 2019-08-01 User Created
nhm-uk:invertebrate zoology:1911.10.26.41159-60 Yoldia myalis 1 2019-08-01 User Created
uf:ip:398487 Eulopia sagrinata 1 2019-08-01 User Created
USNM:IZ:USNM 93962 Myonera lamellifera 1 2019-08-01  iDigBio
uf:ip:471653 Particoma cuneiformis 1 2019-08-01 User Created
uf:ip:143402 Transennella culebrana 1 2019-08-01 User Created
usnm:invertebrate zoology:44769 Septentrioploma fragile 1 2019-08-01 User Created
USNM:IZ:USNM 202870 Periploma aleuticum 1 2019-08-01  iDigBio
USNM:IZ:USNM 24613 Turtonia minuta 1 2019-08-01  iDigBio
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