Browsing by Autor "Luis H. Acosta Salvatierra"

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A new species of Eptesicus (Mammalia: Chiroptera: Vespertilionidae), from the sub-Andean Forest of Santa Cruz, Bolivia
(Asociacion Mexicana de Mastozoología A.C., 2021) Luis H. Acosta Salvatierra; José Luis Poma-Urey; Paula A. Ossa‐López; Fredy A. Rivera‐Páez; Héctor E. Ramírez-Cháves
Bats of genus Eptesicus are represented in South America by nine species of short-eared taxa (subgenus Eptesicus ), and 10 species of long-eared species (subgenus Histiotus ). Here we describe a new species of short-eared Eptesicus based on 19 specimens collected in the sub-Andean Bolivian-Tucumanian forest of Santa Cruz, between 1800-2020 masl. For this, we include morphological, morphometric, and molecular comparisons; we use principal component, discriminant function and mitochondrial genes (cytochrome- b , cytochrome c oxidase subunit I, and nicotinamide adenine dinucleotide dehydrogenase) to compare the new species with other taxa of the subgenus Eptesicus from South America. The new species is distinguished from its congeners by cranial shape, body measurements, and genetic distances. Furthermore, the new species is similar in cranial morphology to Eptesicus andinus but presents a highly developed frontal preorbital process, poorly developed in other related species ( i. e. , E. andinus, E. furinalis, and E. brasiliensis ). All males were consistently darker than females in the new species. This taxon increases to 10 the number of species of bats of the subgenus Eptesicus in South America.
Distribución y estado de conocimiento de dos especies de Phyllostomidae (Chiroptera) en Bolivia
(2021) Luis H. Acosta Salvatierra; José Luis Poma-Urey; Alejandra I. Valdivia; Aideé Vargas
First records of three species of Lasiurus Gray, 1831 (Chiroptera, Vespertilionidae) in Bolivia
(Pensoft Publishers, 2024) Luis H. Acosta Salvatierra; José L. Poma-Urey; Kathrin Barboza-Marquez; Kathia Rivero; José Ochoa G.; Jorge Salazar‐Bravo
Insectivorous bats of the family Vespertilionidae have been grouped into eight tribes, with Lasiurini showing an extensive distribution in South America. In Bolivia, three species of lasiurine bats have been reported: Lasiurus blossevillii (Lesson & Garnot, 1826), L. ega (Gervais, 1856), and L. villosissimus (&Eacute;. Geoffroy St.-Hilaire, 1806). The morphological analyses of specimens of this genus deposited in Bolivian scienti&#64257;c collections and comparisons with specimens from other countries (including holotypes) prompt us to report the &#64257;rst records of three species: Lasiurus atratus Handley 1996, L. castaneus Handley 1960, and L. egregius (Peters, 1870) in Bolivia, expanding their known geographic ranges to the southwestern part of the Amazon.
Historia natural del murciélago cara de perro del Mato Grosso Neoplatymops mattogrossensis (Vieira, 1942) (Chiroptera: Molossidae) en Bolivia
(2023) Luis H. Acosta Salvatierra; Kathia Rivero; José L. Poma-Urey; Yannet Condori; Martika A. Valdez Montaño; Kathrin Barboza-Marquez; Julia Schulze; Elena Melgares
El murciélago cara de perro del Mato Grosso (Neoplatymops mattogrossensis), tiene hábitos muy pobremente conocidos. Presentamos datos sobre su historia natural (estructura poblacional, temperatura y humedad relativa en el interior y exterior de los refugios, dieta en base al análisis de muestras fecales) obtenidos en refugios de los predios de la Reserva Privada de Patrimonio Natural San Sebastián. Los refugios encontrados estuvieron habitados entre 1-10 individuos y en más del 70% de los refugios existe un solo macho adulto escrotal. Las temperaturas dentro de los refugios tienden a ser más estables que en el exterior, pero no así la humedad relativa. La dieta, esta está compuesta por Insecta, Arachnida, con los coleópteros como los más frecuentes seguido por Lepidoptera y Hemiptera.
Mamíferos de dosel en el Bosque Seco Chiquitano de Bolivia.
(2026) Nicolas Malpartida Ferrero; Kathrin Barboza-Marquez; Luis H. Acosta Salvatierra
Los estudios con cámaras trampa han aportado notablemente el entendimiento de la ecología de la mastofauna en el sotobosque, pero poco se sabe sobre las especies que habitan en el dosel. El Centro de Estudios del Bosque Seco Tropical “Alta Vista”, en Santa Cruz, Bolivia, alberga una parte representativa del Bosque Seco Chiquitano, donde se realizan estudios de flora y fauna local. Este trabajo buscó contribuir al conocimiento de la biodiversidad del dosel en este tipo de ecosistema. Se instalaron cámaras trampa a una altura de entre 4 y 20 m del suelo. Con un esfuerzo de 804 trampas/noche, se registraron ocho especies de mamíferos, destacando Glironia venusta y Sapajus apella. Los patrones de actividad mostraron una mayor actividad nocturna, lo que proporciona bases para futuras investigaciones sobre masto fauna del dosel.
New records and distributional extensions of Peropteryx leucoptera, Gardnerycteris crenulatum, and Lampronycteris brachyotis in Bolivia
(2023) José L. Poma-Urey; Luis H. Acosta Salvatierra; Nicolas Malpartida; Héctor E. Ramírez-Cháves; José Ochoa G.
In the last 5 years, the knowledge of bats (Chiroptera) in Bolivia has advanced significantly, adding 10 species and an updated list for the country. Still, some species are represented by a few voucher specimens (n < 8), such as Peropteryx leucoptera (Emballonuridae), Gardnerycteris crenulatum, and Lampronycteris brachyotis (Phyllostomidae). Here, we provide new records that extend the geographic distribution of these species in Bolivia, along with morphometric data. Based on specimens collected and deposited in systematic collections, we performed qualitative and quantitative comparisons of external and craniodental variables with the original taxonomic descriptions of the 3 species. We also compiled and projected in maps the localities corresponding to historical records in Bolivia. The new records represent distributional extensions to 10 biogeographic provinces in Bolivia. The specimens of P. leucoptera come from the southeastern region of the country. For G. crenulatum and L. brachyotis we present the southernmost and the easternmost records in Bolivia, respectively. The specimens of P. leucoptera tend to be smaller than others collected in the region, while the specimens of G. crenulatum are slightly larger than those reported from other countries. The new records extend the known geographic ranges of these species between 197 and 736 km in Bolivia. We recommend increasing efforts to update the geographic distributions of other species with scarce records in Bolivia.
Nuevo registro de la carachupita de cola lanuda Glironia venusta Thomas, 1912, en el Bosque Seco Chiquitano de Bolivia
(2024) Luis H. Acosta Salvatierra; Kathrin Barboza-Marquez; Nicolás X. Malpartida Fererro
Este trabajo es el primer estudio exploratorio que se realiza en Bolivia para conocer la biodiversidad del dosel. Se instalaron 12 trampas cámara durante 67 días, entre los meses de enero y marzo del año 2023, en el Centro de Estudios del Bosque Seco Tropical Alta Vista. Se registró un total de 89 eventos de captura, de los cuales 50 pertenecieron a Glironia venusta, donde la frecuencia de captura fue 6,22 × 100 trampas/día. Los patrones de actividad registrados para G. venusta muestran cuatro picos de actividad. Adicionalmente, se propone la identificación de individuos a partir de las formas que dejan las líneas oscuras en el rostro.
Protected areas buffer the Brazilian semi‐arid biome from climate change
(Wiley, 2017) Luis H. Acosta Salvatierra; Richard J. Ladle; Humberto Alves Barbosa; Ricardo A. Correia; Ana C. M. Malhado
Abstract The Caatinga is a botanically unique semi‐arid ecosystem in northeast Brazil whose vegetation is adapted to the periodic droughts that characterize this region. However, recent extreme droughts events caused by anthropogenic climate change have challenged its ecological resilience. Here, we evaluate how deforestation and protection status affect the response of the Caatinga vegetation to drought. Specifically, we compared vegetation responses to drought in natural and deforested areas as well as inside and outside protected areas, using a time‐series of satellite‐derived Normalized Difference Vegetation Index ( NDVI ) and climatic data for 2008–2013. We observed a strong effect of deforestation and land protection on overall vegetation productivity and in productivity dynamics in response to precipitation. Overall, deforested areas had significantly lower NDVI and delayed greening in response to precipitation. By contrast, strictly protected areas had higher productivity and considerable resilience to low levels of precipitation, when compared to sustainable use or unprotected areas. These results highlight the importance of protected areas in protecting ecosystem processes and native vegetation in the Caatinga against the negative effects of climate change and deforestation. Given the extremely small area of the Caatinga currently under strict protection, the creation of new conservation areas must be a priority to ensure the sustainability of ecological processes and to avoid further desertification.