Proechimys and Trinomys (Rodentia: Echimyidae)
syncranial differences in two genera of spiny rats in the Neotropical region
DOI:
https://doi.org/10.32673/bjm.vi91.21Keywords:
Biological collections, Geometric morphometrics, Hystricognathi, RodentsAbstract
Scientific collections have an important role in safeguarding biodiversity records. In this study, we used cranium and mandible of rodents obtained from three museums and one University of Brazil. We aimed to describe the morphological differences between the two genera of spiny rats Proechimys and Trinomys. For this, a total of 612 individuals of both genera were photographed. We use geometric morphometric methods through two-dimensional anatomical landmarks to describe the shape and size of the syncranium. Our results showed an absence of statistical difference in the size of syncranium between Proechimys and Trinomys genera. However, there is a difference in shape: Trinomys species had proportionally smaller auditory bulla, a relatively more prominent jugal process and a relatively more robust cranium than Proechimys species. This study adds information regarding the differences already established for the Proechimys and Trinomys genera. Furthermore, it demonstrates the importance of scientific collections for the description of biodiversity.
References
Adams DC, Collyer ML, Kaliontzopoulou A, Sherratt E. 2017. Geomorph: Software for geometric morphometric analyses. R package versão 3.0.5. Disponível em: https://cran.r-project.org/package=geomorph.
Adams DC, Rohlf FJ, Slice DE. 2004. Geometric morphometrics: ten years of progress following the ‘revolution’. Italian Journal of Zoology 71: 5-16. https://doi.org/10.1080/11250000409356545.
Bookstein FL. 1991. Morphometric tools of landmark data: geometry and biology. Cambridge University Press, London, United Kingdom.
Corti M, Aguilera M, Capanna E. 2001. Size and shape changes in the skull accompanying speciation of Sul American spiny rats (Rodentia: Proechimys spp.). Journal of Zoology 253: 537-547. https://doi.org/10.1017/S0952836901000498.
Dryden IL, Mardia KV. 1998. Statistical shape analysis. John Wiley & Sons, Inc. New York, NY.
Dryden IL, Mardia KV. 2016. Statistical shape analysis: with application in R. John Wiley and Sons, Ltd. New York, NY.
Emmons LH, Leite YLR, Patton JL. 2015. Family Echimyidae Gray, 1825. Pp. 877-880, In: Patton JL, Pardiñas UFJ, D’Elía G (Eds). Mammals of South America. Volume 2: Rodents. The University of Chicago Press, Chicago.
Fabre PH, Galewski T, Tilak M, Douzery EJP. 2013. Diversification of South American spiny rats (Echimyidae): a multigene phylogenetic approach. Zoologica Scripta 42: 117–134. https://doi.org/10.1111/j.1463-6409.2012.00572.x.
Fabre PH, Upham NS, Emmons LH, Justy F, Leite YLR, Loss AC, Orlando L, Tilak M, Patterson BD, Douzery EP. 2016. Mitogenomic phylogeny, diversification, and biogeography of south american spiny rats. Molecular Biology and Evolution 34: 613–633. https://doi.org/10.1093/molbev/msw261.
Galewski T, Mauffrey JF, Leite YLR, Patton JL, Douzery EJP. 2005. Ecomorphological diversification among South American spiny rats (Rodentia; Echimyidae): a phylogenetic and chronological approach. Molecular Phylogenetics and Evolution 34: 601–615. https://doi.org/10.1016/j.ympev.2004.11.01.
Gotelli NJ. 2004. A taxonomic wish-list for community ecology. Philosophical Transaction of the Royal Society 359: 585–597. https://doi.org/10.1098/rstb.2003.1443.
Iaeger CT, Maestri R, Fornel R. 2021. Diversification of the cranium and mandible of spiny rats of the genus Trinomys (Rodentia: Echimyidae) in an environmental and phylogenetic context. Journal of Mammalogy 102(2): 603–614. https://doi.org/10.1093/jmammal/gyaa177.
Kay EH, Hoekstra HE. 2008. Rodents. Current Biology 18 : 406-410. https://doi.org/10.1016/j.cub.2008.03.019.
Lara MC, Patton JL, Hingst-Zaher E. 2002. Trinomys mirapitanga, a new species of spiny rat (Rodentia: Echimyidae) from the Brazilian Atlantic Forest. Mammalian Biology 67: 233-242. https://doi.org/10.1078/1616-5047-00034.
Lara MC, Patton JL. 2000. Evolutionary diversification of spiny rats (genus Trinomys, Rodentia: Echimyidae) in the Atlantic Forest of Brazil. Zoological Journal of Linnean Society 130: 661–686. https://doi.org/10.1111/j.1096-3642.2000.tb02205.x.
Lara MC, Patton JL, Silva MNF. 1996. The simultaneous diversification of South American Echimyid Rodents (Hystricognathi) Based on Complete Cytochrome b Sequences. Molecular Phylogenetics and Evolution 5: 403–413. https://doi.org/10.1006/mpev.1996.0035.
Monteiro LR, Reis SF. 2005. Morphological evolution in the mandible of spiny rats, genus Trinomys (Rodentia: Echimyidae). Journal of Zoological Systematics and Evolutionary Research 43: 332–338. https://doi.org/10.1111/j.1439-0469.2005.00323.x.
Nicola PA, Monteiro LR, Pessôa LM, Von Zuben FJ, Rohlf FJ, Reis SF. 2003. Congruence of hierarchical, localized variation in cranial shape and molecular phylogenetic structure in spiny rats, genus Trinomys (Rodentia: Echimyidae). Biological Journal of Linnean Society 80: 385–396. https://doi.org/10.1046/j.1095-8312.2003.00245.x.
Oliveira JA, Bonvicino CR. 2006. Ordem Rodentia. Pp. 347-406, In: Reis NR, Peracchi AL, Pedro WA, Lima IP (Eds.), Mamíferos do Brasil. Editora Universidade Estadual de Londrina, Londrina.
Oksanen J, Blanchet FG, Friendly M, Kindt R, Legendre P, McGlinn D, Minchin PR, O'Hara RB et al. 2017. vegan: Community Ecology Package. R package version 2.4-5. Disponível em: https://CRAN.Rproject.org/package=vegan.
Paradis E, Claude J, Strimmer K. 2004. APE: analyses of phylogenetics and evolution in R language. Bioinformatics 20: 289-290.
Patton JL, Leite RN. 2015. Genus Proechimys. Pp. 950-988, In: Patton JL, Pardiñas UFJ, D’Elía G (Eds.), Mammals of South America. Volume 2. Rodents. The University of Chicago Press, Chicago.
Perez SI, Diniz-Filho JAF, Rohlf FJ, Reis SF. 2009. Ecological and evolutionary factors in the morphological diversification of South American spiny rats. Biological Journal of Linnean Society 98: 646–660. https://doi.org/10.1111/j.1095-8312.2009.01307.x.
Pessôa LM, Tavares WC, Oliveira JA, Patton JL. 2015. Genus Trinomys. Pp. 999- 1019, In: Patton JL, Pardiñas UFJ, D’Elía G (Eds.), Mam.mals of South America. Volume 2: Rodents. The University of Chicago Press, Chicago.
R Development Core Team. R: a language and environment statistical computing. R Foundation for Statistical Computing. Vienna: R Development Core Team, 2017. Disponível em: http://www.rproject.org.
Rohlf FJ. 2013. tpsUtil, file utility program. version 1.64. Department of Ecology and Evolution, State University of New York at Stony Brook.
Rohlf FJ. 2015. tpsDig, digitize landmarks and outlines, version 2.19. Department of Ecology and Evolution, State University of New York at Stony Brook.
Rohlf FJ, Slice D. 1990. Extensions of the procrustes method for the optimal superimposition of landmarks. Systematic Zoology. 39: 40-59. https://doi.org/10.2307/2992207.
la Sancha NU, Boyle SA, Patterson BD. 2017. Getting Back to the Basics: Museum Collections and Satellite Imagery Are Critical to Analyzing Species Diversity. BioScience 67: 405 – 406. https://doi.org/10.1093/biosci/bix004.
Schlager S. 2017. “Morpho and Rvcg - Shape Analysis in R”. Pp. 217-256, In: Zheng G, Li S, Szekely G (Eds.), Statistical Shape and Deformation Analysis. Academic Press; Elsevier, [Amsterdã].
Thomas O. 1921. XIII On spiny rats of the Proechimys group from Southeastern Brazil. Annals and Magazine of Natural History, London 8 (ser. 9): 140–143. https://www.biodiversitylibrary.org/page/26196303.
Venables WN, Ripley BD. 2002. Modern Applied Statistics with S. Fourth Edition. Springer, New York.
Verzi DH, Vucetich MG, Montalvo CI. 1995. Un nuevo Eumysopinae (Rodentia: Echimyidae) del Mioceno tardio de la Provincia de la Pampa y consideraciones sobre la historia de la subfamilia. Ameghiniana. 32: 191- 195. Disponível em: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/2267. Acessado em: 27 fevereiro 2022.
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