What is it about?
This study used geometric morphometrics to examine cranial variation in 601 adult kangaroo rats representing 20 species and 49 operational taxonomic units from 190 localities. I tested how well scaled skull shape distinguishes taxa and how variation relates to allometry, phylogeny, climate, and morphological specialization.
Featured Image
Why is it important?
Cranial shape classified kangaroo rat taxa effectively without relying on geography, and the auditory bulla was the most variable region of the skull. Shape also showed phylogenetic signal and climatic associations, but subspecies and species did not always group according to current taxonomy, showing that cranial variation contains information not captured by traditional classifications alone.
Perspectives
A particularly useful result was that scaled cranial shape retained strong taxonomic information even after removing much of the redundancy associated with size. The substantial variation in auditory-bulla morphology and the mismatch between some shape patterns and current taxonomy also point to lineages that merit closer evolutionary and conservation attention.
Bader H. Alhajeri
Kuwait University
Read the Original
This page is a summary of: Cranial variation in species and subspecies of kangaroo rats (Dipodomys, Dipodomyinae, Rodentia) according to geometric morphometrics, Integrative Zoology, April 2024, Wiley,
DOI: 10.1111/1749-4877.12824.
You can read the full text:
Contributors
The following have contributed to this page
