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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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  ID Part Object Taxonomy Type Date Added Publication Status  
000084020 shell FMNH:Invertebrate Zoology:6140 Palliolum striatum Mesh 2019-08-01 Restricted Download  
000084019 shell nhm-uk:invertebrate zoology:20180338 Yoldiella frigida Mesh 2019-08-01 Restricted Download  
000084018 nhm-uk:invertebrate zoology:1911.10.26.41159-60 Yoldia myalis Mesh 2019-08-01 Restricted Download  
000084017 uf:ip:398487 Eulopia sagrinata Mesh 2019-08-01 Restricted Download  
000084016 shell USNM:IZ:USNM 93962 Myonera lamellifera Mesh 2019-08-01 Restricted Download  
000084014 shell uf:ip:143402 Transennella culebrana Mesh 2019-08-01 Restricted Download  
000084015 shell uf:ip:471653 Particoma cuneiformis Mesh 2019-08-01 Restricted Download  
000084013 shell usnm:invertebrate zoology:44769 Septentrioploma fragile Mesh 2019-08-01 Restricted Download  
000084012 USNM:IZ:USNM 202870 Septentrioploma aleuticum Mesh 2019-08-01 Restricted Download  
000084010 shell USNM:IZ:USNM 429628 Macoma pseudomera Mesh 2019-08-01 Restricted Download  
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