Far away from the endemism area: first record of the Ecuador fish-eating rat Anotomys leander (Cricetidae: Sigmodontinae) in the Colombian Andes

Marín-C., David; Sánchez‐Giraldo, Camilo

doi:10.1515/mammalia-2016-0100

Cited by 3 publications

(1 citation statement)

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“…Recent fieldwork has resulted in major range extensions for several species of ichthyomyines and provided new information concerning their biology and natural history. Consequently, we now know that some species formerly considered to be geographically restricted are much more broadly distributed and occupy a wider range of habitats than previously thought, for example, Neusticomys mussoi (see Rodriguez-Posada, 2014 ), Ichthyomys stolzmanni (see Brito, Tenecota & Pozo-Zamora, 2016 ), Anotomys leander (see Marín-C & Sanchez-Giraldo, 2017 ), Neusticomys peruviensis (see Medina et al, 2015 ; Gonzales, Arce-Merma & Zeballos, 2017 ; Pacheco et al, 2020 ), and Ichthyomys tweedii (see Ramírez-Fernández, Durán & Fernández-Vargas, 2020 ). Importantly, these efforts have also made dozens of fresh specimens available for morphological and molecular analyses ( e.g ., Neusticomys oyapocki ; Catzeflis et al, 2017 ), opening a window of opportunity to advance hypotheses on the systematics and phylogenetics among ichthyomyine genera and species.…”

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confidence: 99%

Systematics and diversification of the Ichthyomyini (Cricetidae, Sigmodontinae) revisited: evidence from molecular, morphological, and combined approaches

Salazar‐Bravo

Tinoco

Zeballos

et al. 2023

PeerJ

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Ichthyomyini, a morphologically distinctive group of Neotropical cricetid rodents, lacks an integrative study of its systematics and biogeography. Since this tribe is a crucial element of the Sigmodontinae, the most speciose subfamily of the Cricetidae, we conducted a study that includes most of its recognized diversity (five genera and 19 species distributed from southern Mexico to northern Bolivia). For this report we analyzed a combined matrix composed of four molecular markers (RBP3, GHR, RAG1, Cytb) and 56 morphological traits, the latter including 15 external, 14 cranial, 19 dental, five soft-anatomical and three postcranial features. A variety of results were obtained, some of which are inconsistent with the currently accepted classification and understanding of the tribe. Ichthyomyini is retrieved as monophyletic, and it is divided into two main clades that are here recognized as subtribes: one to contain the genus Anotomys and the other composed by the remaining genera. Neusticomys (as currently recognized) was found to consist of two well supported clades, one of which corresponds to the original concept of Daptomys. Accordingly, we propose the resurrection of the latter as a valid genus to include several species from low to middle elevations and restrict Neusticomys to several highland forms. Numerous other revisions are necessary to reconcile the alpha taxonomy of ichthyomyines with our phylogenetic results, including placement of the Cajas Plateau water rat (formerly Chibchanomys orcesi) in the genus Neusticomys (sensu stricto), and the recognition of at least two new species (one in Neusticomys, one in Daptomys). Additional work is necessary to confirm other unanticipated results, such as the non-monophyletic nature of Rheomys and the presence of a possible new genus and species from Peru. Our results also suggest that ichthyomyines are one of the main Andean radiations of sigmodontine cricetids, with an evolutionary history dating to the Late Miocene and subsequent cladogenesis during the Pleistocene.

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Section: Introductionmentioning

confidence: 99%

Systematics and diversification of the Ichthyomyini (Cricetidae, Sigmodontinae) revisited: evidence from molecular, morphological, and combined approaches

Salazar‐Bravo

Tinoco

Zeballos

et al. 2023

PeerJ

Self Cite

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A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)

et al. 2019

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Based on two adult specimens collected in the Río León (Azuay, Ecuador), we describe a new highland species of a small crab-eating rat of the genus Ichthyomys Thomas (Rodentia, Cricetidae, Ichthyomyini). It is distinguishable from Ichthyomys hydrobates (Winge, 1891), the species phenetically closest to it, by its smaller size, bicolored tail (unicolored in I. hydrobates), broad and heavily fringed hindfoot (narrower and moderately fringed in I. hydrobates), and several craniodental traits (e.g. rostrum short broad; nasals anteriorly truncated; interorbital region narrow; supraorbital margins smoothly rounded; supraorbital foramina small, zygomatic plate very narrow; incisors opisthodont; length of M3 half that of M2). The new species occurs in the western Andes in southern Ecuador and is allopatric with Ichthyomys stolzmanni Thomas, 1893, which also has a bicolored tail but is larger. The new species brings the number of Ecuadorean Ichthyomys to four, Ecuador thus becoming the country with the greatest diversity of Ichthyomyini (four genera and eight species).

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Checklist of the mammals (Mammalia) of Colombia

Ramírez-Chaves

Morales-Martínez

Rodríguez-Posada³

et al. 2022

MaNo

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La actualización de la lista de especies presentes en un país es una tarea continua que llena vacíos de información y apoya la toma de decisiones. En los últimos cinco años, ha habido un aumento del número de especies de mamíferos descritas como nuevas en Colombia, así como primeros registros y cambios taxonómicos. Con el fin de actualizar la información de las especies de mamíferos de Colombia, realizamos una revisión exhaustiva de los cambios taxonómicos de las 528 especies registradas en listas previas. Agregamos nuevas especies descritas, así como nuevos registros de especies ya descritas. Discutimos especies cuya presencia ha sido sugerida recientemente en Colombia, pero que no es respaldada por especímenes de museo. La lista actual de mamíferos en Colombia tiene 543 especies, con cuatro descritas en el último año. Esperamos que la lista sea una herramienta apoyar las necesidades de investigación, en especial las extensiones de distribución, los problemas taxonómicos y la conservación de los mamíferos del país. Finalmente, recomendamos que las actualizaciones de la lista sigan estándares nacionales e internacionales como Darwin Core, utilizado por el Repositorio de Información Global sobre Biodiversidad - GBIF, y el Sistema de Información sobre Biodiversidad de Colombia – SiB.

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Far away from the endemism area: first record of the Ecuador fish-eating rat Anotomys leander (Cricetidae: Sigmodontinae) in the Colombian Andes

Cited by 3 publications

References 10 publications

Systematics and diversification of the Ichthyomyini (Cricetidae, Sigmodontinae) revisited: evidence from molecular, morphological, and combined approaches

Systematics and diversification of the Ichthyomyini (Cricetidae, Sigmodontinae) revisited: evidence from molecular, morphological, and combined approaches

A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)

Checklist of the mammals (Mammalia) of Colombia

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