Project 657: M. Weksler. 2006. Phylogenetic relationships of oryzomine rodents (Muroidea, Sigmodontinae) : separate and combined analyses of morphological and molecular data. Bulletin of the American Museum of Natural History. 296:1-149.
Specimen: Oryzomys balneator (AMNH:47593)
View: skull - dorsal

Abstract

In this study I provide a phylogenetic hypothesis for the tribe Oryzomyini that can be used to understand the diversification and evolution of this group of rodents and to revise the current generic-level classification. Morphological and molecular data were used for these purposes in combined and separate analyses. Molecular data consisted of partial sequences (1266 bp) from the first exon of the nuclear gene encoding the interphotoreceptor retinoid binding protein (IRBP); the morphological matrix comprised 99 characters, including 16 integumental characters, 32 skull characters, 29 dental characters, 7 postcranial characters, and 10 characters from the phallus and soft-anatomy systems. I present anatomical descriptions for each character, including delineation of different states observed among oryzomyines. Results of the combined analysis were congruent with the IRBP-only dataset for oryzomyine higher-level relationships. Morphological analyses, although showing discrepancies from the combined or IRBP consensus cladograms and with low nodal support values, recovered several clades similar to the combined and IRBP analyses. Systematics of the tribe and the evolution of a few pivotal characters are discussed in light of the proposed phylogeny. Different taxonomic arrangements for species currently included in the genus Oryzomys are suggested. Finally, I evaluate evolutionary and biogeographic hypotheses that are compatible with our current knowledge on oryzomyine relationships.


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Project DOI: 10.7934/P657, http://dx.doi.org/10.7934/P657
This project containsMatrices
  • 34 Media
  • 1 Matrix
  • 2 Documents
  • 1 Folio
  • 112 Taxa
  • 13 Specimens
  • 99 Characters
Total size of project's media files: 42.45M

Download Project SDD File
Total scored cells: 4812
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 99
Total characters with associated media: 39
Total characters with media with labels: 9
Total character states: 242
Total character states with associated media: 2
Total character states with media with labels:0
Total unordered/ordered characters:99/0
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MorphoBank Project 657

    Authors' Institutions

    • American Museum of Natural History



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    Maureen Admin
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    Marcelo Weksler
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    Taxonomic Overview for Matrix 'M1488' (54 Taxa)

    taxon unscored
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    [1] Nyctomys sumichrasti
    Last Modified in 12/05/13
    3969600003
    [2] Peromyscus maniculatus
    Last Modified in 12/05/13
    10898900003
    [3] Delomys sublineatus
    Last Modified in 12/05/13
    13868600003
    [4] Thomasomys baeops
    Last Modified in 12/05/13
    3989600003
    [5] Wiedomys pyrrhorhinos
    Last Modified in 12/05/13
    12888700003
    [6] Amphinectomys savamis
    Last Modified in 12/05/13
    67323200003
    [7] Handleyomys intectus
    Last Modified in 12/05/13
    16858300003
    [8] Holochilus brasiliensis
    Last Modified in 12/05/13
    1999800003
    [9] Holochilus chacarius
    Last Modified in 12/05/13
    22777700003
    [10] Lundomys molitor
    Last Modified in 12/05/13
    9919000003
    [11] Melanomys caliginosus
    Last Modified in 12/05/13
    1999800003
    [12] Microryzomys minutus
    Last Modified in 12/05/13
    3969600003
    [13] Neacomys minutus
    Last Modified in 12/05/13
    22777700003
    [14] Neacomys musseri
    Last Modified in 12/05/13
    16838300003
    [15] Neacomys spinosus
    Last Modified in 12/05/13
    1999800003
    [16] Nectomys apicalis
    Last Modified in 12/05/13
    15848400003
    [17] Nectomys squamipes
    Last Modified in 12/05/13
    5959400003
    [18] Nesoryzomys narboroughi
    Last Modified in 12/05/13
    5949400003
    [19] Nesoryzomys swarthi
    Last Modified in 12/05/13
    37626200003
    [20] Oecomys bicolor
    Last Modified in 12/05/13
    8949100003
    [21] Oecomys catherinae
    Last Modified in 12/05/13
    23767600003
    [22] Oecomys concolor
    Last Modified in 12/05/13
    11009800003
    [23] Oecomys mamorae
    Last Modified in 12/05/13
    10908900003
    [24] Oecomys trinitatis
    Last Modified in 12/05/13
    12908700003
    [25] Oligoryzomys flavescens
    Last Modified in 12/05/13
    11888800003
    [26] Oligoryzomys fornesi
    Last Modified in 12/05/13
    21787800003
    [27] Oligoryzomys fulvescens
    Last Modified in 12/05/13
    1989800003
    [28] Oligoryzomys nigripes
    Last Modified in 12/05/13
    8929100003
    [29] Oligoryzomys stramineus
    Last Modified in 12/05/13
    23767600003
    [30] Oryzomys albigularis
    Last Modified in 12/05/13
    9939000003
    [31] Oryzomys alfaroi
    Last Modified in 12/05/13
    7959200003
    [32] Oryzomys angouya
    Last Modified in 12/05/13
    21009700003
    [33] Oryzomys balneator
    Last Modified in 12/05/13
    16838300003
    [34] Oryzomys chapmani
    Last Modified in 12/05/13
    10928900003
    [35] Oryzomys couesi
    Last Modified in 12/05/13
    10898900003
    [36] Oryzomys hammondi
    Last Modified in 12/05/13
    23767600003
    [37] Oryzomys lamia
    Last Modified in 12/05/13
    22787700003
    [38] Oryzomys levipes
    Last Modified in 12/05/13
    10918900003
    [39] Oryzomys macconnelli
    Last Modified in 12/05/13
    8939100003
    [40] Oryzomys megacephalus
    Last Modified in 12/05/13
    01019900003
    [41] Oryzomys melanotis
    Last Modified in 12/05/13
    11009800003
    [42] Oryzomys palustris
    Last Modified in 12/05/13
    01019900003
    [43] Oryzomys polius
    Last Modified in 12/05/13
    22777700003
    [44] Oryzomys russatus
    Last Modified in 12/05/13
    14868500003
    [45] Oryzomys subflavus
    Last Modified in 12/05/13
    8969100003
    [46] Oryzomys talamancae
    Last Modified in 12/05/13
    11019800003
    [47] Oryzomys xanthaeolus
    Last Modified in 12/05/13
    9959000003
    [48] Oryzomys yunganus
    Last Modified in 12/05/13
    11898800003
    [49] Pseudoryzomys simplex
    Last Modified in 12/05/13
    9919000003
    [50] Scolomys ucayalensis
    Last Modified in 12/05/13
    9909000003
    [51] Sigmodontomys alfari
    Last Modified in 12/05/13
    21019700003
    [52] Sigmodontomys aphrastus
    Last Modified in 12/05/13
    22787700003
    [53] Zygodontomys brevicauda
    Last Modified in 12/05/13
    11039800003
    [54] Zygodontomys cherriei
    Last Modified in 12/05/13
    11019800003


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    Taxon list13962
    Folio views1431Folio list (949 views); Weksler, 2008 (482 views);
    Views for media list3273




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    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project327
    Document downloads8Matrix containing morphological and molecular datasets (8 downloads);
    Matrix downloads31Morphological Matrix (31 downloads);
    Project downloads287
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