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MammalBase - Accepted taxon: Gracilinanus microtarsus

Accepted taxon: Gracilinanus microtarsus


Accepted taxon: Gracilinanus microtarsus
Taxon: Gracilinanus microtarsus
Rank: Species
Higher Classification: DIDELPHIMORPHIA | Didelphidae | Didelphinae | Gracilinanus
Reference: Wilson, Don E., and DeeAnn M. Reeder, eds. Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed), JHU Press, 2005.

Fig.1 - Ternary plot of the proximate analysis for the Gracilinanus microtarsus diet.
CF (Crude Fibre) 8, ASH (Ash contents) 5, NFE (Nitrogen-Free-Extract) 26, CP (Crude Protein) 45, EE (Ether Extract) 17. See details for the calculations in Lintulaakso, K., Tatti, N. and Žliobaitė, I., 2022. Quantifying mammalian diets. Mammalian Biology, pp.1-15. [DOI]


Table 1. List of Diet Items for Gracilinanus microtarsus.
TSN Complete name Part Ratio a. Reference(s)
Insecta WHOLE 24.00 Damuth, J…
Magnoliopsida FRUIT 15.00 Damuth, J…
Vertebrata WHOLE 10.00 Damuth, J…
Vertebrata EGGS 5.00 Damuth, J…
Isoptera WHOLE 3.83 Pires, Ma…
Formicidae WHOLE 3.67 Pires, Ma…
Hymenoptera WHOLE 3.50 Pires, Ma…
Curculionidae WHOLE 3.33 Pires, Ma…
Meloidae WHOLE 3.17 Pires, Ma…
Scarabaeidae WHOLE 3.00 Pires, Ma…
Alleculidae WHOLE 2.83 Pires, Ma…
Tenebrionidae WHOLE 2.67 Pires, Ma…
Chrysomelidae WHOLE 2.50 Pires, Ma…
Elateridae WHOLE 2.33 Pires, Ma…
Hemiptera WHOLE 2.17 Pires, Ma…
Blattaria WHOLE 2.00 Pires, Ma…
Gryllidae WHOLE 1.83 Pires, Ma…
Orthoptera WHOLE 1.67 Pires, Ma…
Lepidoptera WHOLE 1.50 Pires, Ma…
Diptera WHOLE 1.33 Pires, Ma…
Psocoptera WHOLE 1.17 Pires, Ma…
Ephemeroptera WHOLE 1.00 Pires, Ma…
Araneae WHOLE 0.83 Pires, Ma…
Gastropoda WHOLE 0.67 Pires, Ma…
Solanum FRUIT 0.50 Pires, Ma…
Passiflora FRUIT 0.33 Pires, Ma…
Miconia FRUIT 0.17 Pires, Ma…

a. Standardized values. See details for the calculations in Lintulaakso, K., Tatti, N. and Žliobaitė, I., 2022. Quantifying mammalian diets. Mammalian Biology, pp.1-15. [DOI]


Table 2. List of Standard Traits for Gracilinanus microtarsus.
Trait Selected Value All Value(s) Reference(s)
Locomotion: Eisenberg 1981 Arboreal Arboreal, Scansonal – Paglia,A. P., 2012, Lista Anotada dos Mamíferos do Brasil 2ª Edição Annotated Checklist of Brazilian Mammals 2nd Edition, Pires, M.M., Martins, E.G., Silva, M.N.F. and Dos Reis, S.F., 2010. Gracilinanus microtarsus (Didelphimorphia: Didelphidae). Mammalian Species, 42(851), pp.33-40., Weisbecker, V., Beck, R., Guillerme, T., Harrington, A., Lange-Hodgson, L., Lee, M., Mardon, K., Phillips, M. 2023. Multiple modes of inference reveal less phylogenetic signal in marsupial basicranial shape compared with the rest of the cranium. Philosophical Transactions of the Royal Society B: Biological Sciences. 378(1880), pp.None. Available at: 10.1098/rstb.2022.0085.
Dietary category: Eisenberg 1981 Insectivore-Omnivore Carnivore, Insectivore, Insectivore-Omnivore – EUAN G. RITCHIE, 2005, 'Predators with Pouches: the Biology of Carnivorous Marsupials', Austral Ecology, vol. 30, no. 2, pp. 239-240, Paglia,A. P., 2012, Lista Anotada dos Mamíferos do Brasil 2ª Edição Annotated Checklist of Brazilian Mammals 2nd Edition
Dietary category: Miljutin 2009 Animalivore Animalivore – EUAN G. RITCHIE, 2005, 'Predators with Pouches: the Biology of Carnivorous Marsupials', Austral Ecology, vol. 30, no. 2, pp. 239-240, Paglia,A. P., 2012, Lista Anotada dos Mamíferos do Brasil 2ª Edição Annotated Checklist of Brazilian Mammals 2nd Edition
Temporal habits nocturnal nocturnal – Pires, M.M., Martins, E.G., Silva, M.N.F. and Dos Reis, S.F., 2010. Gracilinanus microtarsus (Didelphimorphia: Didelphidae). Mammalian Species, 42(851), pp.33-40.

Table 3. List of Standard Measurements for Gracilinanus microtarsus.
Measurement Location Unit n Total n Unknown n Female n Male Min Mean Max SD Reference(s)
- Checked, Unlinked - 9 localities in Brazil n/a 4 - 4 - - Pires, M.…
Body Mass (BM) nan g 6 - - 6 - 28.1 - - Nelson, A…
Body Mass (BM) nan g 2 - 2 - - 26 - - Nelson, A…
Body Mass (BM) Brazil g - - - - 12 32 52 - Paglia,A.…
Body Mass (BM) nan g - - - - 13 - 40 - Freudenth…
Body Mass - Female (BM-F) 9 localities in Brazil g 5 - 5 - 12 19.2 37 - Pires, M.…
Body Mass - Male (BM-M) 9 localities in Brazil g 20 - - 20 17 27.4 52 - Pires, M.…
Ear Length - Female (EL-F) 9 localities in Brazil mm 5 - 5 - 18 22.4 20 - Pires, M.…
Ear Length - Male (EL-M) 9 localities in Brazil mm 20 - - 20 19 20.6 23 - Pires, M.…
Head-Body Length (HBL) nan mm 2 - 2 - - 99 - - Nelson, A…
Head-Body Length (HBL) nan mm 6 - - 6 - 107.8 - - Nelson, A…
Head-Body Length - Female (HBL-F) 9 localities in Brazil mm 5 - 5 - 81 95.2 116 - Pires, M.…
Head-Body Length - Male (HBL-M) 9 localities in Brazil mm 20 - - 20 86 104 129 - Pires, M.…
Hind Foot Length - Female (HFL-F) 9 localities in Brazil mm 5 - 5 - 15 15.8 17 - Pires, M.…
Hind Foot Length - Male (HFL-M) 9 localities in Brazil mm 20 - - 20 15 17.95 20 - Pires, M.…
Tail Length - Female (TL-F) 9 localities in Brazil mm 5 - 5 - 131 140.2 155 - Pires, M.…
Tail Length - Male (TL-M) 9 localities in Brazil mm 20 - - 20 139 154.2 167 - Pires, M.…

Table 4. List of other Measurements b. for Gracilinanus microtarsus.
Measurement Location Unit n Total n Unknown n Female n Male Min Mean Max SD Reference(s)
alisphenoid bulla breadth females (mm) 9 localities in Brazil mm 4 - 4 - 9 9 10 - Pires, Ma…
alisphenoid bulla breadth males (mm) 9 localities in Brazil mm 11 - - 11 9 10 10 - Pires, Ma…
and palatal length females (mm) 9 localities in Brazil mm 4 - 4 - 13 14 15 - Pires, Ma…
and palatal length males (mm) 9 localities in Brazil mm 12 - - 12 13 15 16 - Pires, Ma…
breadth of braincase females (mm) 9 localities in Brazil mm 4 - 4 - 11 12 12 - Pires, Ma…
breadth of braincase males (mm) 9 localities in Brazil mm 12 - - 12 11 12 12 - Pires, Ma…
Density of a population cerrado remnant in southeastern Brazil individuals/ha - - - - 7 11 23 4 Pires, Ma…
greatest length of skull males (mm) 9 localities in Brazil mm 12 - - 12 28 30 33 - Pires, Ma…
Home-range size (females) ha - - - - - 0 - 0 Pires, Ma…
Home-range size (males) ha - - - - - 0 - 0 Pires, Ma…
least pterygoid breadth females (mm) 9 localities in Brazil mm 4 - 4 - 3 3 3 - Pires, Ma…
least pterygoid breadth males (mm) 9 localities in Brazil mm 12 - - 12 3 3 4 - Pires, Ma…
length of molar toothrow females (mm) 9 localities in Brazil mm 4 - 4 - 5 6 6 - Pires, Ma…
length of molar toothrow males (mm) 9 localities in Brazil mm 12 - - 12 6 6 6 - Pires, Ma…
Longevity year - - - - 1 - 2 - Pires, Ma…
nasal length females (mm) 9 localities in Brazil mm 4 - 4 - 11 12 14 - Pires, Ma…
nasal length males (mm) 9 localities in Brazil mm 12 - - 12 11 13 15 - Pires, Ma…
petrosal breadth females (mm) 9 localities in Brazil mm 4 - 4 - 8 9 9 - Pires, Ma…
petrosal breadth males (mm) 9 localities in Brazil mm 12 - - 12 8 9 9 - Pires, Ma…
rostral length females (mm) 9 localities in Brazil mm 4 - 4 - 10 11 11 - Pires, Ma…
rostral length males (mm) 9 localities in Brazil mm 12 - - 12 10 12 13 - Pires, Ma…
rostral width females (mm) 9 localities in Brazil mm 4 - 4 - 4 4 5 - Pires, Ma…
rostral width males (mm) 9 localities in Brazil mm 12 - - 12 4 5 5 - Pires, Ma…
width of least interorbital constriction females (mm) 9 localities in Brazil mm 4 - 4 - 5 5 5 - Pires, Ma…
width of least interorbital constriction males (mm) 9 localities in Brazil mm 12 - - 12 5 5 6 - Pires, Ma…
zygomatic breadth females (mm) 9 localities in Brazil mm 4 - 4 - 14 16 16 - Pires, Ma…
zygomatic breadth males (mm) 9 localities in Brazil mm 12 - - 12 15 16 18 - Pires, Ma…
BMR (kJ/h) nan kJ/h - - - - - 0 - - McNab, B.…

b. other Measurements. Source Measurements which are not listed on or mapped with the Standard Traits..


Table 5. List of Data Sources for Gracilinanus microtarsus.
Taxon Reference Match Status
Marmosa microtarsus Geiser,F., 2003, Thermal biology and energetics of carnivorous marsupials, Predators with pouches: the biology of carnivorous marsupials 52: Genus, Species = Master subfamily genus, species Verified - Accepted
Gracilinanus microtarsus Paglia,A. P., 2012, Lista Anotada dos Mamíferos do Brasil 2ª Edição Annotated Checklist of Brazilian Mammals, 1: Exact Taxon match Verified - Accepted
Gracilinanus microtarsus Damuth, J. 2010. ABSOLUT 6 a mammalian database compiled by the national center for ecological analysis and synthesis (NCEAS ) workshop on mammalian communities. 1: Exact Taxon match Verified - Accepted
Gracilinanus microtarsus Pires, Mathias M., Eduardo G. Martins, Maria Nazareth F. Silva, and Sérgio F. dos Reis. “Gracilinanus Microtarsus (Didelphimorphia: Didelphidae).” Mammalian Species 42 (January 25, 2010): 33–40. doi:10.1644/851.1. 1: Exact Taxon match Verified - Accepted
Gracilinanus microtarsus Weisbecker, V., Beck, R.M., Guillerme, T., Harrington, A.R., Lange-Hodgson, L., Lee, M.S., Mardon, K. and Phillips, M.J., 2023. Multiple modes of inference reveal less phylogenetic signal in marsupial basicranial shape compared with the rest of the cranium. Philosophical Transactions of the Royal Society B, 378(1880), p.20220085. 1: Exact Taxon match Verified - Accepted
Gracilinanus microtarsus DeMers, A.C., 2023. Functional Significance of the Mandible, Tooth Roots, and Tooth Crowns, and their Implications for Fossil Dietary Inference (Doctoral dissertation, The Ohio State University). 1: Exact Taxon match Verified - Accepted
Marmosa microtarsus McNab, B.K., 2008. An analysis of the factors that influence the level and scaling of mammalian BMR. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 151(1), pp.5-28. 52: Genus, Species = Master subfamily genus, species Verified - Accepted
Gracilinanus microtarsus Nelson, A., Engelman, R.K. and Croft, D.A., 2023. How to weigh a fossil mammal? South American notoungulates as a case study for estimating body mass in extinct clades. Journal of Mammalian Evolution, 30(3), pp.773-809. 1: Exact Taxon match Verified - Accepted
Gracilinanus microtarsus Freudenthal, M. and Martín-Suárez, E., 2013. Estimating body mass of fossil rodents. Scripta Geologica, 145, pp.1-513. 1: Exact Taxon match Verified - Accepted

Citation for this page: [The MammalBase community 2026. / CC BY 4.0. http://doi.org/10.5281/zenodo.7462864 Gracilinanus microtarsus , Accessed 2nd May 2026 at https://mammalbase.net/me/4692]