Primer registro del murciélago desértico sureño (Bauerus dubiaquercus) en el Estado de Tabasco, México

Resumen El murciélago pálido tropical (Bauerus dubiaquercus) es una especie poco conocida. Existe escasa información sobre su distribución en México, encontrándose sólo registros esporádicos en los estados de Campeche, Guerrero, Nayarit, Quintana Roo y Veracruz. En septiembre de 2017 se capturó y fotografió un ejemplar de B. dubiaquercus en el ejido Niños Héroes, municipio de Tenosique de Pino Suarez, Tabasco, México. Éste se localiza dentro del área natural protegida Cañón del Usumacinta y representa el primer registro documentado de la especie en Tabasco y el más reciente en la región sureste de México, lo que contribuye al conocimiento de la especie. Palabras clave: Área Natural Protegida, Chiroptera, selva mediana perennifolia, Vespertilionidae AbstractThe southern desert bat (Bauerus dubiaquercus) it’s a little known species. There is little information about its distribution in Mexico, with sporadic records in the states of Campeche, Guerrero, Nayarit, Quintana Roo and Veracruz. In September 2017, an individual of B. dubiaquercus was captured and photographed in the Ejido Niños Héroes, municipality of Tenosique de Pino Suarez, Tabasco, Mexico. This is located within the protected natural area Cañon del Usumacinta and represents the first documented record in Tabasco of the species and the most recent in the southeast region of Mexico, thus contributing to the knowledge of the species. Key words: Chiroptera, medium evergreen forest, natural protected area, Vespertilionidae

DESCRIPTION OF NOSELEAVES OF PHYLLOSTOMID BATS USING FOURIER ANALYSIS

ABSTRACT. The outline shape of noseleaves of Phyllostomid bats is described using Fourier analysis. Line drawings of the noseleaves of nine phyllostomines, seven stenodermatines, and one carolliinae were used to calculate the parameters of a simplified Fourier equation fitted using a multiple-regression model. The outline of noseleaves can be reconstructed by plotting the corresponding Fourier equations. Noseleaves of phyllostomines and stenodermatines were compared using the coefficients of the Fourier equations and no significant difference was detected, although some species such as Lonchorhina aurita were clearly outliers. RESUMEN. Se utilizó el análisis de Fourier para describir la forma de las hojas nasales de los murciélagos filostómidos. Se usaron dibujos del contorno de las hojas nasales de nueve filostominos, siete estenodermatinos y un carolino para calcular los parámetros de una ecuación de Fourier simplificada ajustada por un modelo de regresión múltiple. El contorno de las hojas nasales puede reconstruirse graficando las ecuaciones de Fourier correspondientes. Se compararon las hojas nasales de los filostominos y de los estenodermatinos usando los coeficientes de Fourier y no se detectó ninguna diferencia significativa, a pesar de que algunas especies, como Lonchorhina aurita, se salieron totalmente del patrón general. Key words: Chiroptera, Phyllostomidae, Neotropical fauna, noseleaves morphology.

COMMUNITY STRUCTURE OF BATS ALONG AN ALTITUDINAL GRADIENT IN TROPICAL EASTERN MEXICO

ABSTRACT. The changes in species richness, relative abundance, and biomass of bats were monitored along an altitudinal gradient (800 to 2,560 m) in the Sierra Madre Oriental in eastern Mexico. In general, species richness, density, and biomass were correlated with elevation, but the insectivorous bats were more numerous at mid-elevation sites. The frugivorous bats contributed with the majority of the biomass along the gradient. One migratory species (Tadarida brasiliensis) was only detected during the summer months. It is hypothesized that the observed changes are correlated to the amount of food availability and thermoregulatory abilities of bats. RESUMEN. Los cambios en riqueza de especies, abundancia relativa y biomasa de los murciélagos fueron monitoreados a lo largo de un gradiente altitudinal (800 a 2,560 m) en la Sierra Madre Oriental en el este de México. En general, la riqueza de especies, densidad y biomasa estuvieron correlacionadas con la altitud; sin embargo, los murciélagos insectívoros fueron más numerosos en altitudes intermedias. Las especies frugívoras contribuyeron con la mayor proporción de la biomasa. Una especie migratoria (Tadarida brasiliensis) sólo fue colectada en el verano. Se sugiere que los patrones observados están correlacionados con la disponibilidad de alimento y las habilidades termorregulatorias de los murciélagos. Key words: Chiroptera, community structure, altitudinal gradients, Queretaro.

Bat Species Richness and Their Distribution in Pokhara Valley of Nepal

Compared with the numerous studies on Chiroptera in other countries only little information has been published on Nepalese bats. Status of bats in Nepal has not been identified and even not given more interest by the government body which is devoted to wildlife managements itself. In Nepal, out of 51 species recorded by CAMP in 2002, 2 are critically endangered, 1 endangered and 5 are vulnerable. Pokhara valley is the city of caves. Some by products reports appear on bats of As Pokhara valley out of which 11 species belongs to Least concerned (LC), 5 Not threatened (NT), 1 Critically endangered (CR), 1 Endangered (EN) which is 35.29 % of bats species of Nepal. Few roosting sites of bats have been identified in Pokhara valley. These sites are distributed in the Lekhnath municipality, Pokhara sub-metropolitan city, Bhalam VDC, Armala VDC and Hemja VDC. Among the 12 roosting sites, two are tree roosts and the remaining ten are cave roosts. Key Words: Chiroptera, Roosts, Status, Species, Sites, Pokhara DOI: 10.3126/init.v2i1.2522 The Initiation Vol.2(1) 2008 pp43-48