Diversidad de murciélagos en ambientes ribereños de la Selva Pedemontana de las Yungas de Jujuy, Argentina

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Los ambientes ribereños son importantes para conservar la fauna que los habita o los usa como corredores entre áreas fragmentadas. Los murciélagos explotan los elementos del paisaje diferencialmente, y entre ellos los ambientes ribereños les resultan útiles para satisfacer varios requerimientos ecológicos. Evaluamos la diversidad de murciélagos insectívoros y frugívoros en ambientes ribereños de la Selva Pedemontana de la provincia de Jujuy, Argentina, colindantes con bosque nativo (ARB) y cultivos (ARC), así como también su dieta versus disponibilidad de recursos alimenticios en cada tipo de ambiente. Entre octubre de 2014 y enero de 2015 se usaron 10 redes de niebla para capturar murciélagos, 40 trampas pegajosas para estimar riqueza y abundancia de insectos voladores y se realizaron ocho transectas para contabilizar frutos quiropterofílicos. Se capturaron 94 murciélagos de ocho especies. La completitud fue superior al 90% en ambos ambientes (Chao1). La riqueza entre ARB y ARC fue la misma aunque la composición de especies fue disímil (SP: 50%). ARB registró una dominancia marcada de la especie frugívora Sturnira lilium. Contrariamente, en ARC la lista fue encabezada por la especie insectívora Molossops temminckii y las abundancias de individuos fueron más bajas que en ARB. La oferta de recursos alimenticios disminuyó en ARC, observándose un cambio en la composición y estructura del ensamble de murciélagos. Esto sugiere que además de proteger los ambientes ribereños es necesario completar las estrategias de conservación con la preservación de fragmentos de bosque nativo adyacentes.


Bat diversity in riparian environments of Selva Pedemontana in the Yungas of Jujuy Province, Argentina. Riparian environments are important to conserve the fauna that lives in these environments or uses them as corridors between fragmented areas. Bats exploit landscape elements differentially, and among them riparian environments are useful to meet various ecological requirements. We evaluated the diversity of insectivorous and frugivorous bats in riparian environments of the Selva Pedemontana in the Jujuy Province, Argentina, adjacent to native forest (ARB) or crops (ARC), and compared to the availability of food resources in each type of environment. Between October 2014 and January 2015, 10 mist nets were used to capture bats, 40 sticky traps were used to estimate the richness and abundance of flying insects, and eight transects were carried out to account for chiropterophilic fruits. Ninety-four bats of eight species were captured. Completeness was greater than 90% in both environments (Chao1). Richness was similar in ARB and ARC, but species composition differed (SP: 50%). ARB registered a marked dominance of the frugivorous species Sturnira lilium. In contrast, the most common species in ARC was the insectivorous species Molossops temminckii and the abundances of individuals were lower than in ARB. The availability of food resources was lower in ARC, resulting in a change in the composition and structure of bat assembly. In addition to protecting riparian environments, it is necessary to preserve fragments of adjacent native forest.

Diversity of cave bats in the Brazilian tropical dry forest of Rio Grande do Norte state

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Caves are important roosts for bats in karstic areas and play a critical role in the protection of bat populations. In the state of Rio Grande do Norte, in northeastern Brazil, cave-dwelling bats are poorly studied. Moreover, the state contains more than 900 caves, mainly in the Caatinga biome, that may offer important roosts for local bat populations. Thus, to gain a first insight into the richness, diversity, and colony size of cave-bats in the state, we sampled 13 caves through active search and captures with mist nets. Sixteen species from five families were recorded, and the biggest colonies belonged to Pteronotus gymnonotus and Phyllostomus discolor. Furna Feia cave was the richest, with 10 species. Our results showed that Rio Grande do Norte is home to a rich and abundant diversity of cave bats, including vulnerable species like Furipterus horrens, Natalus macrourus, and Lonchorhina aurita. This study is the first to determine the diversity of RN cave bats, providing useful fundamental data for future conservation actions.


Morcegos cavernícolas na Caatinga do Rio Grande do Norte. As cavernas são abrigos importantes para morcegos em ambientes cársticos e desempenham um papel fundamental para a proteção de suas populações. No estado do Rio Grande do Norte, os morcegos cavernícolas têm sido pouco estudos, no entanto, o estado contém um grande número de cavernas (~ 900) que poderiam abrigar uma grande diversidade de morcegos. A fim de determinar a riqueza, diversidade e tamanhos de colônias de morcegos cavernícolas no estado, foram amostradas 13 cavernas durante três dias consecutivos por cada caverna mediante busca ativa e capturas com redes de neblina. Foram capturadas 16 espécies pertencentes a cinco famílias onde as maiores colônias achadas pertenceram às espécies Pteronotus gymnonotus e Phyllostomus discolor. A caverna Furna Feia abrigou a maior riqueza com 10 espécies. Nossos resultados mostraram que o Rio Grande do Norte abriga uma rica e abundante diversidade de morcegos cavernícolas, incluindo espécies vulneráveis como Furipterus horrens, Natalus macrourus e Lonchorhina aurita. Este estudo é o primeiro a determinar a diversidade de morcegos cavernícolas no RN a fim de fornecer dados úteis para futuras ações de conservação.

Structure of a bat assemblage from a fragmented landscape in the state of Minas Gerais, southeastern Brazil

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Minas Gerais presents the richest bat fauna among the states of southeastern Brazil. Despite its high diversity, the bat fauna in large areas of the state remain poorly or completely unknown due to its wide territorial area, as well as the complexity of its relief and vegetation. This work aimed to study the bat fauna in fragments of a region in Lavras, Minas Gerais, southeastern Brazil, as well as the dynamic of their species. The study was carried out in a highly fragmented landscape area, composed by relatively small fragments of semi-deciduous forest under distinct levels of human disturbances. Forty nights of sampling were conducted with a total capture effort of 43,200 m²/h. Fourteen species were recorded, out of which 10 were in the family Phyllostomidae, 3 in Vespertilionidae and 1 in Molossidae. It is important to highlight the presence of Chiroderma doriae, a species classified as threatened in Brazil, and Molossops neglectus, a rare molossid bat that needs taxonomic review.


Estructura de un emsamble de murciélagos en un paisaje fragmentado del estado de Minas Gerais, sudeste de Brasil. El estado de Minas Gerais es el estado más rico del sudeste de Brasil en cuanto a número de especies de murciélagos. A pesar de esta gran diversidad, grandes áreas del estado continúan siendo poco o completamente desconocidas en lo respectivo a los quirópteros, debido a la amplitud de su área territorial, al relieve y a la complejidad de la vegetación. El presente trabajo tuvo como objetivo estudiar los murciélagos en fragmentos de la región de Lavras, Minas Gerais, sudeste de Brasil, así como la dinámica de sus especies. El estudio se llevó a cabo en una zona de paisaje altamente fragmentado, compuesta por pequeños fragmentos de bosque semideciduo y en distintos niveles de antropización. Se realizaron muestreos durante 40 noches, con un esfuerzo de captura total de 43.200 m²/h. Catorce especies fueron registradas, de las cuales 10 correspondieron a la familia Phyllostomidae, 3 a Vespertilionidae y 1 a Molossidae. Es importante destacar la presencia de Chiroderma doriae, una especie clasificada como amenazada en Brasil y Molossops neglectus, un molósido muy raro que necesita de revisión taxonómica.