DOI: 10.5061/dryad.k3b10
title: Data from: Malagasy cichlids differentially limit impacts of body shape evolution on oral jaw functional morphology

description: Patterns of trait covariation, like integration and modularity, are vital
 factors that influence the evolution of vertebrate body plans. In
 functional systems, decoupling of morphological modules buffers functional
 change in one trait by reducing correlated variation with another.
 However, for complex morphologies with many-to-one mapping of form to
 function (MTOM), resistance to functional change may also be achieved by
 constraining morphological variation within a functionally stable region
 of morphospace. For this research, we used geometric morphometrics to
 evaluate the evolution of body shape and its relationship to jaw
 functional morphology in two independent radiations of endemic Malagasy
 cichlid (Teleostei: Cichlidae). Our results suggested that the two
 subfamilies used different strategies to mitigate impacts of body shape
 variation on a metric of jaw function, maxillary kinematic transmission
 (MKT): (1) modularity between cranial and postcranial morphologies, and
 (2) integration of body and jaw evolution, with jaw morphologies varying
 in a manner that limits change in MKT. This research shows that, unlike
 modularity, MTOM allows traits to retain strong evolutionary covariation
 while still reducing impacts on functionality. These results suggest that
 MTOM, and its influence on the evolution of correlated traits, is likely
 much more widespread than is currently understood.
description: species
 info-
 Table of data and information for Malagasy cichlids. - “subfamily” is the
 corresponding subfamily that each species occurs in. -
 “body_centroid_size” is the average centroid size from body shape
 coordinates in Malagasy cichlids. - “jaw_centroid_size” is the average
 centroid size from oral jaw fourbar shape coordinates in Malagasy
 cichlids. - “MKT” is the maxillary kinematic transmission for species’
 average oral jaw fourbar shapes.fourbar shape
 coordinates-Morphometric coordinate
 data for oral jaw fourbar shapes of Malagasy cichlids, averaged by
 species.body shape
 coordinates- Morphometric
 coordinate data for body shapes of Malagasy cichlids, averaged by
 species.hypothetical 4bars,
 MKT-
 Morphometric coordinate data for oral jaw fourbar shapes estimated across
 the fourbar morphospace (i.e., plot of PCs 1 and 2 in manuscript fig. 5
 and fig. S1). - “PC1” and “PC2” are scores that denote the location on a
 PC plot of each set of fourbar coordinates that follow. - “MKT” is the
 maxillary kinematic transmission for each set of fourbar
 coordinates.semilandmarks (cichlid
 body)- Table designating
 which body shape coordinates are sliding semilandmarks. - For use in
 Procrustes shape alignment in the “gpagen” function in the R package,
 geomorph. - See manuscript figure 3A for visualization of which
 coordinates were used as sliding semilandmarks and which were fixed
 landmarks in this study.ML tree of Malagasy and
 South Asian cichlidsNexus-formatted text
 file containing ML tree of Malagasy and South Asian cichlids (manuscript
 fig. 2). Node support, based on 1,000 bootstrap
 searches.malagasy, south asian
 cichlid.tre.txt