A new species of big-eared climbing rat, genus Ototylomys (Cricetidae: Tylomyinae), from Chiapas, Mexico

Calvin A. Porter; Nia E. Beasley; Nicté Ordóñez-Garza; Laramie L. Lindsey; Duke S. Rogers; Nicole Lewis-Rogers; Jack W. Sites; Robert D. Bradley

doi:10.1093/jmammal/gyx096

A new species of big-eared climbing rat, genus Ototylomys (Cricetidae: Tylomyinae), from Chiapas, Mexico

Calvin A. Porter, Nia E. Beasley, Nicté Ordóñez-Garza, Laramie L. Lindsey, Duke S. Rogers, Nicole Lewis-Rogers, Jack W. Sites, Robert D. Bradley

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

An allopatric population of big-eared climbing rats (Ototylomys) from the Northern Highlands of Chiapas, Mexico, is described as a new species. The new taxon is part of a unique montane rainforest community that includes several other endemic species in the limited geographic range between the Río Grijalva and the Central Depression of Chiapas. Several cranial, external, and molecular characters distinguish this new species of big-eared climbing rat from its more widely distributed congener, Ototylomys phyllotis. We performed principal component and discriminate function analyses of cranial measurements, and found that specimens of the new species consistently could be distinguished from other Ototylomys with strong statistical support. Compared withexemplars of Ototylomys from elsewhere in their range, the new species possesses a karyotype that differs by 3 additional biarmed chromosome pairs, is fixed or nearly fixed for distinct electromorphs at 12 allozyme loci, and the mean genetic distance exceeds 14%, based on comparisons of the mitochondrial cytochrome b gene between the new species of Ototylomys and representatives of O. phyllotis. The restricted distribution in montane karst rainforest suggests that the species and its habitat may be a matter of conservation concern. Una población alopátrica de rata orejuda trepadora (Ototylomys) de las Tierras Altas del Norte de Chiapas, México se describe como una nueva especie. El nuevo taxón es parte de una comunidad única de bosque lluvioso montano que incluye varias especies endémicas en el área de distribución geográfica limitada entre el Río Grijalva y la Depresión Central de Chiapas. Varios caracteres craneales, externos, y moleculares distinguen la nueva rata orejuda trepadora de su congénere más ampliamente distribuido, Ototylomys phyllotis. Se realizaron análisis de componentes principales y de función discriminante de los caracteres craneales, y se encontró que los especímenes de La Pera fueron consistentemente distinguidos de otros Ototylomys con un fuerte soporte estadístico. En comparación con ejemplares de Ototylomys del rango, la nueva especie posee un cariotipo que difiere por 3 pares adicionales de cromosomas biarmados, está fijo o casi fijo por distintos electromorfos en 12 loci alozímicos. Adicionalmente, la media de la distancia genética comparada del gen mitochondrial citocromo b entre la nueva especie de Ototylomys y representantes de O. phyllotis, excede el 14%. La distribución restringida en el bosque lluvioso montano kárstico sugiere que la especie y su hábitat pueden ser de importancia para la conservación.

Original language	English (US)
Pages (from-to)	1310-1329
Number of pages	20
Journal	Journal of Mammalogy
Volume	98
Issue number	5
DOIs	https://doi.org/10.1093/jmammal/gyx096
State	Published - Oct 1 2017
Externally published	Yes

Bibliographical note

Funding Information:
We acknowledge M. D. Engstrom for originally recognizing the new species. Specimens of Ototylomys were collected by numerous field biologists including the following: E. A. Arellano, B. Baker, M. Baker, R. H. Baker, A. Pérez Barrios, H. Bolig, D. Dennett, R. C. Dowler, N. D. Durish, M. D. Engstrom, D. A. Good, J. D. Hanson, E. J. Heske, M. C. Haynie, D. G. Huckaby, L. K. Longhofer, A. B. McPherson, F. Mendez-H, R. Mercado Vallejo, J. C. Morales, L. A. Ruedas, S. M. Russell, G. Schave, C. A. Schmidt, R. Sohn, E. Stern, J. R. Suchecki, P. K. Tucker, and R. G. Webb. G. Martin assisted with data analysis. We thank the following for specimen loans or access to collections: C. J. Conroy and J. L. Patton (MVZ); J. A. Esselstyn (LSUMZ); H. Garner (TTU); J. E. Light and H. Prestridge (BRTC); R. C. Dowler and M. A. Revelez (ASNHC); C. Schmidt (FHSM); L. Abraczinskas and B. Lundrigan (MSU); J. P. Dines (LACM); and V. Mathis (UF). A. B. Baird assisted in determining voucher numbers. The allozyme work was funded by a 1984 grant to CAP from the Associated Students of Brigham Young University, and by grants to JWS, Jr. from the BYU College of Biology and Agriculture, the Monte L. Bean Life Science Museum, and the Committee for Research and Exploration of the National Geographic Society. Funding for some specimen collection and the DNA sequencing was provided by a Mentoring Environment Grant and a John A. Widtsoe Fellowship, Brigham Young University (to DSR). Specimens collected and used in the DNA sequencing portion of this paper were collected under permit SGPA/DGVS/04103/09 issued to F. X. González Cózatl by the Dirección General de Vida Silvestre, SEMARNAT.

Publisher Copyright:
© The Author 2017. Published by Oxford University Press on behalf of American Society of Mammalogists.

Keywords

Chiapas
El Pozo
La Pera
Mexico
Ototylomys
Tylomyinae
Tylomyini
big-eared climbing rat

Publisher link

10.1093/jmammal/gyx096

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@article{61bf6716c5a548498c4e3d1e08242b51,

title = "A new species of big-eared climbing rat, genus Ototylomys (Cricetidae: Tylomyinae), from Chiapas, Mexico",

abstract = "An allopatric population of big-eared climbing rats (Ototylomys) from the Northern Highlands of Chiapas, Mexico, is described as a new species. The new taxon is part of a unique montane rainforest community that includes several other endemic species in the limited geographic range between the R{\'i}o Grijalva and the Central Depression of Chiapas. Several cranial, external, and molecular characters distinguish this new species of big-eared climbing rat from its more widely distributed congener, Ototylomys phyllotis. We performed principal component and discriminate function analyses of cranial measurements, and found that specimens of the new species consistently could be distinguished from other Ototylomys with strong statistical support. Compared withexemplars of Ototylomys from elsewhere in their range, the new species possesses a karyotype that differs by 3 additional biarmed chromosome pairs, is fixed or nearly fixed for distinct electromorphs at 12 allozyme loci, and the mean genetic distance exceeds 14%, based on comparisons of the mitochondrial cytochrome b gene between the new species of Ototylomys and representatives of O. phyllotis. The restricted distribution in montane karst rainforest suggests that the species and its habitat may be a matter of conservation concern. Una poblaci{\'o}n alop{\'a}trica de rata orejuda trepadora (Ototylomys) de las Tierras Altas del Norte de Chiapas, M{\'e}xico se describe como una nueva especie. El nuevo tax{\'o}n es parte de una comunidad {\'u}nica de bosque lluvioso montano que incluye varias especies end{\'e}micas en el {\'a}rea de distribuci{\'o}n geogr{\'a}fica limitada entre el R{\'i}o Grijalva y la Depresi{\'o}n Central de Chiapas. Varios caracteres craneales, externos, y moleculares distinguen la nueva rata orejuda trepadora de su cong{\'e}nere m{\'a}s ampliamente distribuido, Ototylomys phyllotis. Se realizaron an{\'a}lisis de componentes principales y de funci{\'o}n discriminante de los caracteres craneales, y se encontr{\'o} que los espec{\'i}menes de La Pera fueron consistentemente distinguidos de otros Ototylomys con un fuerte soporte estad{\'i}stico. En comparaci{\'o}n con ejemplares de Ototylomys del rango, la nueva especie posee un cariotipo que difiere por 3 pares adicionales de cromosomas biarmados, est{\'a} fijo o casi fijo por distintos electromorfos en 12 loci aloz{\'i}micos. Adicionalmente, la media de la distancia gen{\'e}tica comparada del gen mitochondrial citocromo b entre la nueva especie de Ototylomys y representantes de O. phyllotis, excede el 14%. La distribuci{\'o}n restringida en el bosque lluvioso montano k{\'a}rstico sugiere que la especie y su h{\'a}bitat pueden ser de importancia para la conservaci{\'o}n.",

keywords = "Chiapas, El Pozo, La Pera, Mexico, Ototylomys, Tylomyinae, Tylomyini, big-eared climbing rat",

author = "Porter, {Calvin A.} and Beasley, {Nia E.} and Nict{\'e} Ord{\'o}{\~n}ez-Garza and Lindsey, {Laramie L.} and Rogers, {Duke S.} and Nicole Lewis-Rogers and Sites, {Jack W.} and Bradley, {Robert D.}",

note = "Funding Information: We acknowledge M. D. Engstrom for originally recognizing the new species. Specimens of Ototylomys were collected by numerous field biologists including the following: E. A. Arellano, B. Baker, M. Baker, R. H. Baker, A. P{\'e}rez Barrios, H. Bolig, D. Dennett, R. C. Dowler, N. D. Durish, M. D. Engstrom, D. A. Good, J. D. Hanson, E. J. Heske, M. C. Haynie, D. G. Huckaby, L. K. Longhofer, A. B. McPherson, F. Mendez-H, R. Mercado Vallejo, J. C. Morales, L. A. Ruedas, S. M. Russell, G. Schave, C. A. Schmidt, R. Sohn, E. Stern, J. R. Suchecki, P. K. Tucker, and R. G. Webb. G. Martin assisted with data analysis. We thank the following for specimen loans or access to collections: C. J. Conroy and J. L. Patton (MVZ); J. A. Esselstyn (LSUMZ); H. Garner (TTU); J. E. Light and H. Prestridge (BRTC); R. C. Dowler and M. A. Revelez (ASNHC); C. Schmidt (FHSM); L. Abraczinskas and B. Lundrigan (MSU); J. P. Dines (LACM); and V. Mathis (UF). A. B. Baird assisted in determining voucher numbers. The allozyme work was funded by a 1984 grant to CAP from the Associated Students of Brigham Young University, and by grants to JWS, Jr. from the BYU College of Biology and Agriculture, the Monte L. Bean Life Science Museum, and the Committee for Research and Exploration of the National Geographic Society. Funding for some specimen collection and the DNA sequencing was provided by a Mentoring Environment Grant and a John A. Widtsoe Fellowship, Brigham Young University (to DSR). Specimens collected and used in the DNA sequencing portion of this paper were collected under permit SGPA/DGVS/04103/09 issued to F. X. Gonz{\'a}lez C{\'o}zatl by the Direcci{\'o}n General de Vida Silvestre, SEMARNAT. Publisher Copyright: {\textcopyright} The Author 2017. Published by Oxford University Press on behalf of American Society of Mammalogists.",

year = "2017",

month = oct,

day = "1",

doi = "10.1093/jmammal/gyx096",

language = "English (US)",

volume = "98",

pages = "1310--1329",

journal = "Journal of Mammalogy",

issn = "0022-2372",

publisher = "Allen Press Inc.",

number = "5",

}

TY - JOUR

T1 - A new species of big-eared climbing rat, genus Ototylomys (Cricetidae: Tylomyinae), from Chiapas, Mexico

AU - Porter, Calvin A.

AU - Beasley, Nia E.

AU - Ordóñez-Garza, Nicté

AU - Lindsey, Laramie L.

AU - Rogers, Duke S.

AU - Lewis-Rogers, Nicole

AU - Sites, Jack W.

AU - Bradley, Robert D.

N1 - Funding Information: We acknowledge M. D. Engstrom for originally recognizing the new species. Specimens of Ototylomys were collected by numerous field biologists including the following: E. A. Arellano, B. Baker, M. Baker, R. H. Baker, A. Pérez Barrios, H. Bolig, D. Dennett, R. C. Dowler, N. D. Durish, M. D. Engstrom, D. A. Good, J. D. Hanson, E. J. Heske, M. C. Haynie, D. G. Huckaby, L. K. Longhofer, A. B. McPherson, F. Mendez-H, R. Mercado Vallejo, J. C. Morales, L. A. Ruedas, S. M. Russell, G. Schave, C. A. Schmidt, R. Sohn, E. Stern, J. R. Suchecki, P. K. Tucker, and R. G. Webb. G. Martin assisted with data analysis. We thank the following for specimen loans or access to collections: C. J. Conroy and J. L. Patton (MVZ); J. A. Esselstyn (LSUMZ); H. Garner (TTU); J. E. Light and H. Prestridge (BRTC); R. C. Dowler and M. A. Revelez (ASNHC); C. Schmidt (FHSM); L. Abraczinskas and B. Lundrigan (MSU); J. P. Dines (LACM); and V. Mathis (UF). A. B. Baird assisted in determining voucher numbers. The allozyme work was funded by a 1984 grant to CAP from the Associated Students of Brigham Young University, and by grants to JWS, Jr. from the BYU College of Biology and Agriculture, the Monte L. Bean Life Science Museum, and the Committee for Research and Exploration of the National Geographic Society. Funding for some specimen collection and the DNA sequencing was provided by a Mentoring Environment Grant and a John A. Widtsoe Fellowship, Brigham Young University (to DSR). Specimens collected and used in the DNA sequencing portion of this paper were collected under permit SGPA/DGVS/04103/09 issued to F. X. González Cózatl by the Dirección General de Vida Silvestre, SEMARNAT. Publisher Copyright: © The Author 2017. Published by Oxford University Press on behalf of American Society of Mammalogists.

PY - 2017/10/1

Y1 - 2017/10/1

N2 - An allopatric population of big-eared climbing rats (Ototylomys) from the Northern Highlands of Chiapas, Mexico, is described as a new species. The new taxon is part of a unique montane rainforest community that includes several other endemic species in the limited geographic range between the Río Grijalva and the Central Depression of Chiapas. Several cranial, external, and molecular characters distinguish this new species of big-eared climbing rat from its more widely distributed congener, Ototylomys phyllotis. We performed principal component and discriminate function analyses of cranial measurements, and found that specimens of the new species consistently could be distinguished from other Ototylomys with strong statistical support. Compared withexemplars of Ototylomys from elsewhere in their range, the new species possesses a karyotype that differs by 3 additional biarmed chromosome pairs, is fixed or nearly fixed for distinct electromorphs at 12 allozyme loci, and the mean genetic distance exceeds 14%, based on comparisons of the mitochondrial cytochrome b gene between the new species of Ototylomys and representatives of O. phyllotis. The restricted distribution in montane karst rainforest suggests that the species and its habitat may be a matter of conservation concern. Una población alopátrica de rata orejuda trepadora (Ototylomys) de las Tierras Altas del Norte de Chiapas, México se describe como una nueva especie. El nuevo taxón es parte de una comunidad única de bosque lluvioso montano que incluye varias especies endémicas en el área de distribución geográfica limitada entre el Río Grijalva y la Depresión Central de Chiapas. Varios caracteres craneales, externos, y moleculares distinguen la nueva rata orejuda trepadora de su congénere más ampliamente distribuido, Ototylomys phyllotis. Se realizaron análisis de componentes principales y de función discriminante de los caracteres craneales, y se encontró que los especímenes de La Pera fueron consistentemente distinguidos de otros Ototylomys con un fuerte soporte estadístico. En comparación con ejemplares de Ototylomys del rango, la nueva especie posee un cariotipo que difiere por 3 pares adicionales de cromosomas biarmados, está fijo o casi fijo por distintos electromorfos en 12 loci alozímicos. Adicionalmente, la media de la distancia genética comparada del gen mitochondrial citocromo b entre la nueva especie de Ototylomys y representantes de O. phyllotis, excede el 14%. La distribución restringida en el bosque lluvioso montano kárstico sugiere que la especie y su hábitat pueden ser de importancia para la conservación.

AB - An allopatric population of big-eared climbing rats (Ototylomys) from the Northern Highlands of Chiapas, Mexico, is described as a new species. The new taxon is part of a unique montane rainforest community that includes several other endemic species in the limited geographic range between the Río Grijalva and the Central Depression of Chiapas. Several cranial, external, and molecular characters distinguish this new species of big-eared climbing rat from its more widely distributed congener, Ototylomys phyllotis. We performed principal component and discriminate function analyses of cranial measurements, and found that specimens of the new species consistently could be distinguished from other Ototylomys with strong statistical support. Compared withexemplars of Ototylomys from elsewhere in their range, the new species possesses a karyotype that differs by 3 additional biarmed chromosome pairs, is fixed or nearly fixed for distinct electromorphs at 12 allozyme loci, and the mean genetic distance exceeds 14%, based on comparisons of the mitochondrial cytochrome b gene between the new species of Ototylomys and representatives of O. phyllotis. The restricted distribution in montane karst rainforest suggests that the species and its habitat may be a matter of conservation concern. Una población alopátrica de rata orejuda trepadora (Ototylomys) de las Tierras Altas del Norte de Chiapas, México se describe como una nueva especie. El nuevo taxón es parte de una comunidad única de bosque lluvioso montano que incluye varias especies endémicas en el área de distribución geográfica limitada entre el Río Grijalva y la Depresión Central de Chiapas. Varios caracteres craneales, externos, y moleculares distinguen la nueva rata orejuda trepadora de su congénere más ampliamente distribuido, Ototylomys phyllotis. Se realizaron análisis de componentes principales y de función discriminante de los caracteres craneales, y se encontró que los especímenes de La Pera fueron consistentemente distinguidos de otros Ototylomys con un fuerte soporte estadístico. En comparación con ejemplares de Ototylomys del rango, la nueva especie posee un cariotipo que difiere por 3 pares adicionales de cromosomas biarmados, está fijo o casi fijo por distintos electromorfos en 12 loci alozímicos. Adicionalmente, la media de la distancia genética comparada del gen mitochondrial citocromo b entre la nueva especie de Ototylomys y representantes de O. phyllotis, excede el 14%. La distribución restringida en el bosque lluvioso montano kárstico sugiere que la especie y su hábitat pueden ser de importancia para la conservación.

KW - Chiapas

KW - El Pozo

KW - La Pera

KW - Mexico

KW - Ototylomys

KW - Tylomyinae

KW - Tylomyini

KW - big-eared climbing rat

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DO - 10.1093/jmammal/gyx096

M3 - Article

AN - SCOPUS:85032860498

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JO - Journal of Mammalogy

JF - Journal of Mammalogy

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ER -

A new species of big-eared climbing rat, genus Ototylomys (Cricetidae: Tylomyinae), from Chiapas, Mexico

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Bibliographical note

Keywords

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