scholarly journals Primer registro del murciélago bigotón Pteronotus parnelli (Chiroptera: Mormoopidae) al Este de Sonora

2013 ◽  
Vol 3 (1) ◽  
pp. 11
Author(s):  
Martha V. Maldonado Bracamontes ◽  
Gerardo Carreón Arroyo ◽  
Isaias Ochoa Gutiérrez
Keyword(s):  
Protected Area ◽  
Ground Level ◽  
Breeding Population ◽  
East Central ◽  
Mustached Bat ◽  
Pteronotus Parnellii ◽  
Palabras Clave ◽  
Wilderness Area ◽  
The Town ◽  
Pteronotus Parnelli

AbstractParnell’s mustached bat, Pteronotus parnellii, is found from southern Sonora and Tamaulipas to Chiapas in Mexico. On October 3, 2012, at 18:30 hr, six and nine-meter nets were placed above water ponds in the Babisal creek located in the “Northern Jaguar Reserve” near the town of Sahuaripa. At 19:50 hrs the six-meter net was checked, and an adult male, without scrotum, of the species Pteronotus parnellii was found at a height of 70cm above ground level. The Sahuaripa region in east-central Sonora, is outside the known distribution range of this species extending it by at least 220 km north of the Sierra de Alamos. The “Northern Jaguar Reserve” where Pteronotus parnellii was found, is a protected area and an important wilderness area for the protection of the northernmost breeding population of jaguars. Key words: Pteronotus parnellii, Reserva Jaguar del Norte, Sonora, october. Palabras clave: Pteronotus parnellii, Reserva Jaguar del Norte, Sonora, octubre.

scholarly journals Bat species richness in the region of the Central Valleys of Oaxaca, Mexico

2019 ◽  
pp. 1-11
Author(s):  
M. García–Luis ◽  
M. Briones–Salas ◽  
M. C. Lavariega
Keyword(s):  
Species Richness ◽  
Iucn Red List ◽  
Red List ◽  
Risk Category ◽  
Echolocation Calls ◽  
Mustached Bat ◽  
Pteronotus Parnellii ◽  
Urbanized Region ◽  
Bat Diversity

We present a revised checklist of bat species occurring in the semi–urbanized region of the Central Valleys of Oaxaca, Mexico. The checklist is based on surveys using mist nets, recordings of echolocation calls, data from literature, and museum databases. Results show that the Central Valleys of Oaxaca have a species richness of 33 bat species belonging to 22 genera and five families. Species like the Mustached bat Pteronotus parnellii, the Western Red bat Lasiurus blossevillii and the Free–tailed bat Promops centralis were recorded after 32, 30 and 19 years respectively according to the records of the literature. We also recorded four species classified in some risk category according to either the Mexican government’s red list (NOM–059) or the IUCN red list. The recordings of the echolocation calls are the first from the region of Central Valleys of Oaxaca. Bat diversity in the Central Valleys of Oaxaca was underestimated and emphasizes the need for further research

scholarly journals “Guardianes de la tradición” Resistencias al cambio político y socio-cultural del tardofranquismo y la Transición en Andalucía oriental = “Guardians of tradition”. Resistances to the political and socio cultural change during the late Francoism and the transition to democracy in Eastern Andalusia

2020 ◽  
pp. 344
Author(s):  
Gloria Román Ruiz
Keyword(s):  
Cultural Change ◽  
Social Groups ◽  
Cultural Transformation ◽  
Transition To Democracy ◽  
The Political ◽  
San Jose ◽  
Palabras Clave ◽  
The Sixties ◽  
The Impact ◽  
The Town

Resumen: El artículo se interroga por la naturaleza y la intensidad de las resistencias que algunos grupos sociales plantearon al proceso de transformación política y socio-cultural que comenzó a finales de los años sesenta y se extendió a lo largo de los setenta. Presta atención a aquellos sujetos que alzaron su voz en defensa de la tradición y en contra de la modernidad, así como a la incidencia que tuvieron sus acciones y comportamientos de oposición sobre el proceso de democratización. En primer lugar, el texto se detiene en las acciones de resistencia protagonizadas por feligreses conservadores que abrigaban actitudes políticas aquiescentes con la dictadura y acudían a escuchar misa a una parroquia regentada por un cura progresista. En segundo lugar, atiende a las resistencias expresadas por la comunidad parroquial de la iglesia de San José de Estepona (Málaga) ante el proyecto para la instauración de un complejo nudista en la localidad en 1978.Palabras clave: tardofranquismo, transición, democratización, resistencias al cambio, conservadurismo.Abstract: The article wonders about the nature and the intensity of the resistances set in motion by some social groups against the process of political and socio-cultural transformation that began at the end of the sixties and extended throughout the seventies. It pays attention to those subjects who raised their voice in defence of the tradition and against the modernity, as well as to the impact of their actions and opposition behaviours on the process of democratization. In the first place, the paper deals with the actions of resistance activated by the conservative parishioners who had acquiescent political attitudes towards the dictatorship and who attended to a parish ruled by a progressive priest. Secondly, it focuses on the resistances expressed by the parochial community of the San José church (Estepona, Málaga) caused by a nudist project in the town in 1978.Keywords: late Francoism, transition to democracy, democratization, resistances to change, conservatism.

Are the initial frequency-modulated components of the mustached bat's biosonar pulses important for ranging?

1991 ◽  
Vol 66 (6) ◽  
pp. 1951-1964 ◽  
Author(s):  
D. C. Fitzpatrick ◽  
N. Suga ◽  
H. Misawa
Keyword(s):  
Maximum Amplitude ◽  
Signal Amplitude ◽  
Frequency Component ◽  
Target Range ◽  
Constant Frequency ◽  
Range Resolution ◽  
Mustached Bat ◽  
Pteronotus Parnellii ◽  
Target Ranging ◽  
The Mean

1. FM-FM neurons in the auditory cortex of the mustached bat, Pteronotus parnellii, are specialized to process target range. They respond when the terminal frequency-modulated component (TFM) of a biosonar pulse is paired with the TFM of the echo at a particular echo delay. Recently, it has been suggested that the initial FM components (IFMs) of biosonar signals may also be important for target ranging. To examine the possible role of IFMs in target ranging, we characterized the properties of IFMs and TFMs in biosonar pulses emitted by bats swung on a pendulum. We then studied responses of FM-FM neurons to synthesized biosonar signals containing IFMs and TFMs. 2. The mustached bat's biosonar signal consists of four harmonics, of which the second (H2) is the most intense. Each harmonic has an IFM in addition to a constant-frequency component (CF) and a TFM. Therefore each pulse potentially consists of 12 components, IFM1-4, CF1-4, and TFM1-4. The IFM sweeps up while the TFM sweeps down. 3. The IFM2 and TFM2 depths (i.e., bandwidths) were measured in 217 pulses from four animals. The mean IFM2 depth was much smaller than the mean TFM2 depth, 2.87 +/- 1.52 (SD) kHz compared with 16.27 +/- 1.08 kHz, respectively. The amplitude of the IFM2 continuously increased throughout its duration and was always less than the CF2 amplitude, whereas the TFM2 was relatively constant in amplitude over approximately three-quarters of its duration and was often the most intense part of the pulse. The maximum amplitude of the IFM2 was, on average, 11 dB smaller than that of the TFM2. Because range resolution increases with depth and the maximum detectable range increases with signal amplitude, the IFMs are poorly suited for ranging compared with the TFMs. 4. FM-FM neurons (n = 77) did not respond or responded very poorly to IFMs with depths and intensities similar to those emitted on the pendulum. The mean IFM2 depth at which a just-noticeable response appeared was 4.48 +/- 1.98 kHz. Only 14% of the pulses emitted on the pendulum had IFM2 depths that exceeded the mean IFM2 depth threshold of FM-FM neurons. 5. Most FM-FM neurons responded to IFMs that had depths comparable with those of TFMs. However, when all parameters were adjusted to optimize the response to TFMs and then readjusted to maximize the response to IFMs, 52% of 27 neurons tested responded significantly better to the optimal TFMs than to the optimal IFMs (P less than 0.05, t test).(ABSTRACT TRUNCATED AT 400 WORDS)

Postnatal Maturation of Primary Auditory Cortex in the Mustached Bat, Pteronotus parnellii

2010 ◽  
Vol 103 (5) ◽  
pp. 2339-2354 ◽  
Author(s):  
M. Vater ◽  
E. Foeller ◽  
E. C. Mora ◽  
F. Coro ◽  
I. J. Russell ◽  
...  
Keyword(s):  
Auditory Cortex ◽  
Cortical Neurons ◽  
Second Harmonic ◽  
Tuning Curve ◽  
Primary Auditory Cortex ◽  
Constant Frequency ◽  
Low Frequencies ◽  
Postnatal Maturation ◽  
Mustached Bat ◽  
Pteronotus Parnellii

The primary auditory cortex (AI) of adult Pteronotus parnellii features a foveal representation of the second harmonic constant frequency (CF2) echolocation call component. In the corresponding Doppler-shifted constant frequency (DSCF) area, the 61 kHz range is over-represented for extraction of frequency-shift information in CF2 echoes. To assess to which degree AI postnatal maturation depends on active echolocation or/and reflects ongoing cochlear maturation, cortical neurons were recorded in juveniles up to postnatal day P29, before the bats are capable of active foraging. At P1-2, neurons in posterior AI are tuned sensitively to low frequencies (22–45 dB SPL, 28–35 kHz). Within the prospective DSCF area, neurons had insensitive responses (>60 dB SPL) to frequencies <40 kHz and lacked sensitive tuning curve tips. Up to P10, when bats do not yet actively echolocate, tonotopy is further developed and DSCF neurons respond to frequencies of 51–57 kHz with maximum tuning sharpness ( Q10dB) of 57. Between P11 and 20, the frequency representation in AI includes higher frequencies anterior and dorsal to the DSCF area. More multipeaked neurons (33%) are found than at older age. In the oldest group, DSCF neurons are tuned to frequencies close to 61 kHz with Q10dB values ≤212, and threshold sensitivity, tuning sharpness and cortical latencies are adult-like. The data show that basic aspects of cortical tonotopy are established before the bats actively echolocate. Maturation of tonotopy, increase of tuning sharpness, and upward shift in the characteristic frequency of DSCF neurons appear to strongly reflect cochlear maturation.

UM SERTáƒO DE áGUAS E DE LETRAS

2014 ◽  
Vol 11 (17) ◽  
Author(s):  
ALAN KARDEC GOMES PACHáŠCO FILHO
Keyword(s):  
Arid Region ◽  
Social Thought ◽  
Palabras Clave ◽  
The Town

O Sertão está consolidado no pensamento social brasileiro como região árida, de sol inclemente, refratário e oposto ao litoral. Esta dualidade permeia a historiografia concernente ao tema. Neste artigo, mostro um sertão dessemelhante, locus da nascente dos principais rios maranhenses, através dos quais os portugueses interiorizaram a colonização. Nesta ”mesopotá¢mia” erigiram escolas de ler e escrever e no final do século dezenove, realizavam serões de leitura também chamados de ”roda de amigos” para discutir polá­tica, literatura, história, prosadores e poesia realizados na Vila da Chapada. João Parsondas de Carvalho e Carlota Carvalho já no século vinte foram intelectuais e legá­timos representantes desse sertão de letras. Palavras-chave: Maranhão. Sertão. Rios. Intelectuais.  ABACK COUNTRY WATER SAND LETTERS Abstract: The Backwoods is consolidated in brazilian social thought as arid region of inclement refractory and opposite coast sun. This duality permeates the historiography related to the theme. In this article, I show one unlike backwoods, east of the main locus of Maranhão rivers, through which the Portuguese internalized colonization. This ”Mesopotamia” erected schools to read and write and in late nineteenthcentury, evenings reading or ”wheels of friends” to discuss politics, works, poetry and prose writers were in the town of Chapada. Johan Parsondas de Carvalho e Carlota Carvalho were intellectuals and legitimate representatives of that wilderness of letters. Keywords: Maranhão. Backwoods. Rivers. Intellectuals.   UN CAMPO DE AGUAS Y DE LETRASResumen: El Campo está consolidado en el pensamiento social brasileño como región árida, de sol inclemente y opuesto al litoral. Esta dualidad absuelve la historiografá­a concerniente al tema. En este artá­culo, se presenta un campo que no es semejante, sitio de la naciente de los principales rá­os del Maranhão, a través de los cuales los portugueses  interiorizaron la colonización. En esta "Mesopotamia" erigieron escuelas para leer y escribir y al fin del siglo diecinueve, momentos de lectura o grupos de amigos para discutir polá­tica, obras, prosas y poesá­a eran realizadas en la  Vila da Chapada. Joao Parsondas de Carvalho y Carlotas Carvalho fueron intelectuales y legá­timos representantes de ese campo de las letras. Palabras clave: Maranhão. Campo. Rá­os. Intelectuales.

Climate and intraannual density fluctuations in Pinus pinaster subsp. mesogeensis in Spanish woodlands

2009 ◽  
Vol 39 (8) ◽  
pp. 1557-1565 ◽  
Author(s):  
Stella Bogino ◽  
Felipe Bravo
Keyword(s):  
Pinus Pinaster ◽  
Radial Growth ◽  
Sampling Site ◽  
Woody Species ◽  
Ground Level ◽  
Density Fluctuations ◽  
Climate Change Scenarios ◽  
East Central ◽  
Cambial Age ◽  
The Mean

Intraannual features or anomalies in the tree rings of woody species may provided useful information for ecological and climatological studies. The frequency of intraannual density fluctuations (IADFs), differences in IADFs according to the cambial age, changes in IADFs in the last century, and relationships of IADFs to radial growth and climate were analyzed in five stands of Pinus pinaster subsp. mesogeensis (Fieschi & Gaussen) Silba in east-central Spain. Standard dendrochronological techniques were used. Two cores were extracted 1.30 m above ground level from 15 dominant and codominant trees at each sampling site. The data were analyzed by analysis of variance, Pearson’s correlation, and logistic regression. Results showed that (i) the mean frequency of IADFs was higher in younger than older trees; (ii) the frequency of IADFs increased from the 1940s to the present; (iii) radial growth was negatively correlated with the presence of IADFs; and (iv) density fluctuations may be predicted by using a logistic model, with monthly rainfall and temperature as independent variables. Studies of intraannual features or anomalies in radial growth may be useful for ecological and climatological applications under forecasted climate change scenarios.

Duration tuning in the inferior colliculus of the mustached bat

2011 ◽  
Vol 106 (6) ◽  
pp. 3119-3128 ◽  
Author(s):  
Silvio Macías ◽  
Emanuel C. Mora ◽  
Julio C. Hechavarría ◽  
Manfred Kössl
Keyword(s):  
Inferior Colliculus ◽  
Sound Pressure ◽  
Frequency Range ◽  
Constant Frequency ◽  
Third Harmonic ◽  
Mustached Bat ◽  
Pteronotus Parnellii ◽  
Sound Levels ◽  
Response Profile ◽  
Band Pass

We studied duration tuning in neurons of the inferior colliculus (IC) of the mustached bat. Duration-tuned neurons in the IC of the mustached bat fall into three main types: short (16 of 136), band (34 of 136), and long (29 of 136) pass. The remaining 51 neurons showed no selectivity for the duration of sounds. The distribution of best durations was double peaked with maxima around 3 and 17 ms, which correlate with the duration of the short frequency-modulated (FM) and the long constant-frequency (CF) signals emitted by Pteronotus parnellii. Since there are no individual neurons with a double-peaked duration response profile, both types of temporal processing seem to be well segregated in the IC. Most short- and band-pass units with best frequency in the CF2 range responded to best durations > 9 ms (66%, 18 of 27 units). However, there is no evidence for a bias toward longer durations as there is for neurons tuned to the frequency range of the FM component of the third harmonic, where 83% (10 of 12 neurons) showed best durations longer than 9 ms. In most duration-tuned neurons, response areas as a function of stimulus duration and intensity showed either V or U shape, with duration tuning retained across the range of sound levels tested. Duration tuning was affected by changes in sound pressure level in only six neurons. In all duration-tuned neurons, latencies measured at the best duration were longer than best durations, suggesting that behavioral decisions based on analysis of the duration of the pulses would not be expected to be complete until well after the stimulus has occurred.

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