Mammals of Mato Grosso, Brazil: annotated species list and historical review

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The state of Mato Grosso is one of the largest (903,357 km²) and most diverse in terms of vegetation in Brazil, encompassing three distinct Neotropical biomes—the Amazon, Cerrado, and Pantanal—therefore holding high faunal diversity. Our goal in this paper was to review the history of mammalogy in this state, and to provide a checklist of mammals, with comments on taxonomy, distribution, conservation status and type of records for the species present in Mato Grosso. These records were based primarily on voucher specimens housed in scientific collections, but a few were based on personal observations and photographs. We listed 268 species belonging to 149 genera, 36 families and 10 orders, which represent 38% of mammal species occurring in Brazil. The most representative families were Phyllostomidae (63 species), Cricetidae (42) and Didelphidae (31). Our list includes 33 threatened species, representing 12% of Mato Grosso mammal species and 30% of all threatened mammal species of Brazil. We discuss the main threats to this group, and argue that social and political projects together with basic scientific knowledge are urgent to ensure a profound change in the current scenario.


Mamíferos de Mato Grosso, Brasil: lista anotada e revisão histórica. O estado de Mato Grosso é um dos maiores (903 357 km²) e mais diversos do país em termos de fitofisionomias, abrangendo três biomas Neotropicais distintos —Amazônia, Cerrado e Pantanal— apresentando, consequentemente, uma elevada diversidade faunística. Os objetivos do presente estudo foram revisar a história da Mastozoologia neste estado e fornecer uma lista atual de mamíferos com comentários a respeito da taxonomia, distribuição, estado de conservação e tipos de registro para as espécies que ocorrem no Mato Grosso. Os registros aqui obtidos basearam-se, primordialmente, em espécimes-testemunho depositados em coleções científicas, mas algumas espécies foram registradas por observações pessoais e fotografias. Foram registradas 268 espécies pertencentes a 149 gêneros, 36 famílias e 10 ordens, o que representa 38% das espécies de mamíferos do Brasil. As famílias mais representativas foram Phyllostomidae (63 espécies), Cricetidae (42) e Didelphidae (31). Nossa lista inclui 33 espécies ameaçadas, representando 12% das espécies de mamíferos do Mato Grosso e 30% das espécies de mamíferos ameaçados do Brasil. Discutimos as principais ameaças associadas a este grupo e apontamos a importância de projetos sociais e políticos, aliados ao conhecimento científico básico, em promover uma mudança profunda nesse cenário atual.

The genus Dasyprocta Illiger, 1811 (Mammalia: Rodentia) in Colombia

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Two species of Dasyprocta are currently recognized in Colombia. However, the taxonomic history of this genus is complex, with several available names for different populations. Here, we explore intra and interspecific variation of the two species currently recorded in Colombia, D. fuliginosa y D. punctata, and evaluate whether morphological characters allow the separation between specimens from different geographical regions. In addition, we clarify the application of subspecific names to different populations in the country and the distribution patterns of D. punctata subspecies. We show that D. fuliginosa and D. punctata are allopatric in Colombia. D. fuliginosa is distributed in the Amazon, Orinoco and part of the North Andean regions (eastern foothills of the Eastern Cordillera), whereas D. punctata is found in the Caribbean, Chocó and western foothills of North Andean regions of the country. Although there are no clear morphometric or morphological differences in the skull between most taxa, different coat colorations are associated with different geographical regions and contrasting ecosystems. D. punctata candelensis is distributed in the High Magdalena River Basin, North-Andean Province, instead of the Chocó Region as suggested by other authors. D. punctata chocoensis is found in the Colombian Pacific coast and western foothills of the Western Cordillera; D. punctata colombiana is found in the northern part of Colombia in the Caribbean Region. We also found specimens matching the description of D. punctata zuliae from the North-Andean Province in the Eastern Cordillera of Colombia. Despite the present geographic differences in coloration, further revisionary work—including genetic approaches—is needed to further understand the diversity of the genus in Colombia.


El género Dasyprocta Illiger, 1811 (Mammalia: Rodentia) en Colombia. Actualmente se reconocen dos especies del género Dasyprocta en Colombia. Sin embargo, la historia taxonómica del género es compleja, con varios nombres disponibles para diferentes poblaciones. En este trabajo exploramos la variación intra e interespecífica de las dos especies reconocidas en Colombia, D. fuliginosa y D. punctata, y evaluamos los caracteres morfológicos que permiten la separación entre ejemplares procedentes de diferentes regiones geográficas del país. Además, clarificamos la asignación de los nombres subespecíficos a diferentes poblaciones y los patrones de distribución de las subespecies de D. punctata. Dasyprocta fuliginosa y D. punctata son alopátricas en Colombia. Dasyprocta fuliginosa se distribuye en las regiones de la Amazonía, la Orinoquía y parte de la región Norandina (estribaciones orientales de la cordillera Oriental), mientras que D. punctata se encuentra en las regiones Caribe, Chocó y al occidente de la cordillera Oriental en la región Norandina. Aunque no hay variación morfométrica o morfológica craneal entre la mayoría de los taxones, diferentes coloraciones están asociadas con diferentes regiones geográficas y ecosistemas contrastantes. D. punctata candelensis se distribuye en la cuenca alta del río Magdalena, en la provincia Norandina, en lugar de la región del Chocó como ha sido sugerido por otros autores. D. punctata chocoensis se encuentra en la región Pacífica de Colombia y las estribaciones occidentales de la cordillera Occidental; D. punctata colombiana se encuentra en el norte de Colombia en la región Caribe. Además, encontramos ejemplares que se ajustan a la descripción de D. punctata zuliae de la Provincia Norandina en la cordillera Oriental de Colombia. A pesar de las diferencias geográficas de coloración, un trabajo de revisión adicional, que incluya aproximaciones genéticas, es necesario para entender mejor la diversidad de este género en Colombia.

New records of Lampronycteris brachyotis in Brazil

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Lampronycteris is a monotypic genus distributed throughout the Neotropical region. Brazil presents the largest number of reports of L. brachyotis, most of which occur within Amazonia, with only limited records in Cerrado and Atlantic Forest. The present report provides an updated distribution of L. brachyotis in these three biomes, including the first records for the states of Rondônia and Goiás and additional records in the states of Mato Grosso, Pará and São Paulo. We highlight that mesic areas in open formations such as Cerrado might support relictual populations of L. brachyotis, highlighting the importance of these areas for bat diversity.


Nuevos registros de Lampronycteris brachyotis en Brasil. Lampronycteris es un género monotípico de amplia distribución en la región neotropical. Brasil tiene el mayor número de registros de L. brachyotis concentrados en la Amazonía y solo unos pocos registros en el Cerrado y Bosque Atlántico. Este artículo ofrece una actualización de la distribución de L. brachyotis en estos tres biomas, con el primer registro en Rondônia y Goiás, y registros adicionales en los estados de Mato Grosso, Pará y São Paulo. Con los registros presentados aquí, destacamos que los ambientes mésicos presentes en bosque estacional seco, como el Cerrado, pueden mantener poblaciones relictuales de L. brachyotis, destacando la importancia de estas áreas para la diversidad de murciélagos.

Karyotypes of Brazilian representatives of genus Zygodontomys (Rodentia, Sigmodontinae)

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In this article we are reporting two cytotypes found in representatives of Zygodontomys genus trapped in two localities of Brazilian Amazon. From the locality of Surumú (Roraima) were analyzed 12 individuals (cytotype 1) which showed 2n = 86 / FN = 96–100, presenting the two largest pairs (1 and 2) as subtelo-submetacentrics, 4 or 5 medium to small biarmed pairs, the remainder being acrocentric. In Tartarugalzinho (Amapá) 7 specimens which displayed 2n = 84 / FN = 96–98 (cytotype 2) were caught. In both cytotypes the sexual pair is composed by a large submetacentric X chromosome and a median subtelocentric Y chromosome. By G-banding the largest pairs as well as the sex chromosomes could be identified. The C-bands occurred at the centromere of the majority of the autosomes and the short arm of the X and the whole Y chromosomes were heterochromatic. The NOR-bands were prevalently seen at the short arm of one medium and one small acrocentric pairs. Comparing the individuals studied in Brazil with those reported in Venezuela is observed that, although the same or similar diploid numbers, the morphology of the chromosomes of these taxa is quite different, the karyotypes of the specimens from Brazil having a smaller number of biarmed elements.The sexual pair is distinct also, the difference basically concerning to the size of the Y chromosome. Whether these karyotype differences may correspond to different morphological taxa is a subject that deserves further investigations.