ArticlePeerJ2020
Geographic variation in the skull morphology of the lesser grison (
Article in PeerJ, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Population Genetics of the Greater Grison (Animals : an open access journal from MDPI · 2026Article
- Germplasm Resources and Genetic Breeding of Huang-Qi (Astragali Radix): A Systematic Review.Biology · 2024Review
- The skull variation of the olive field mousePeerJ · 2023Article
- Cranial shape variation in mink: Separating two highly similar species.Journal of anatomy · 2022Article
- Better sturdy or slender? Eurasian otter skull plasticity in response to feeding ecology.PloS one · 2022Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe lesser grison (
methodsThe skulls of 52 museum specimens were photographed in the ventral, dorsal, and lateral views, and were analyzed using geometric morphometric techniques.
resultsWe found sexual size dimorphism, with males being larger than females. The shape variation between sexes, as well as between ecoregions, is mostly explained by the effect of allometry. The specimens from Uruguayan savanna are larger than the ones from the Atlantic Forest. Size variation was also significantly correlated to latitude, temperature and precipitation patterns. No correlation between skull shape with geographical distance was detected. DISCUSSION: Morphometric measurements and diet data of lesser grison in regions from higher latitudes than our sampling show a tendency to heavier individuals, and the consumption of bigger prey compared to Uruguayan savanna. The results indicated the smaller specimens associated to low variability in annual temperature, congruent to Atlantic Forest region. An explanation for observed variation may be related to the "resource rule" but, due the minimal natural history information regards this species, we can just speculate about this.
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