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40 results for “Lasiurus”
Figura 7 in Una especie nueva de Lasiurus (Chiroptera: Vespertilionidae) del suroeste de Perú
Figura 7. De arriba hacia abajo: vistas dorsal, ventral y lateral del cráneo de Lasiurus arequipae sp. nov. (MUSA 21058), L. atratus (ROM 117037), L. castaneus (UCR 4971), L. varius (CML 2005) y L. blossevillii (OMNH 18668). Barra de escala = 5 mm.
Figura 3 in Una especie nueva de Lasiurus (Chiroptera: Vespertilionidae) del suroeste de Perú
Figura 3. Mapa de Sudamérica mostrando la distribución de formas rojizas del género Lasiurus: L. arequipae sp. nov. (triángulos negros), L. atratus (líneas verdes), L. blossevillii (símbolos azules) y L. varius (líneas rojas). Área en gris corresponde a elevaciones por encima de los 2,000 m.
Figura 6 in Una especie nueva de Lasiurus (Chiroptera: Vespertilionidae) del suroeste de Perú
Figura 6. Gráficos resultado del ACP (izquierda) y AFD (derecha) de Lasiurus (n = 43) extraído desde 7 medidas. Lasiurus arequipae sp. nov. (estrellas), L. atratus (cuadrados), L. castaneus (círculos), L. varius (triángulos) y L. blossevillii (rombos).
Figura 5 in Una especie nueva de Lasiurus (Chiroptera: Vespertilionidae) del suroeste de Perú
Figura 5. Relaciones filogenéticas del género Lasiurus basado en secuencias de citocromo b. Los números indican los valores de soporte de bootstrap (arriba) y probabilidad a posteriori (abajo).
Figura 4 in Una especie nueva de Lasiurus (Chiroptera: Vespertilionidae) del suroeste de Perú
Figura 4. Hábitat que ocupa Lasiurus arequipae sp. nov. (MUSA 21058 y MUSA 21891). Nótese los cuerpos de agua lenta que discurren al costado del cauce principal del río.
Figura 2 in Una especie nueva de Lasiurus (Chiroptera: Vespertilionidae) del suroeste de Perú
Figura 2. Izquierda: vista dorsal del cuerpo y membrana alar de Lasiurus arequipae sp. nov. (MUSA 21891) mostrando patrones de coloración. Derecha: vista dorsal, ventral y lateral del cráneo y vista lateral de la mandíbula del holotipo (MUSA 21058). Barra de escala = 5 mm).
Figura 1 in Una especie nueva de Lasiurus (Chiroptera: Vespertilionidae) del suroeste de Perú
Figura 1. Individuo de Lasiurus arequipae sp. nov. (MUSA 21891) colectado en Huatiapa, Castilla, Arequipa.
Figure 6 in Necromys lasiurus (Cricetidae: Sigmodontinae) from open areas of the Atlantic Forest of Rio de Janeiro: Population structure and implications for the monitoring of hantaviruses
Figure 6. Results of the Bayesian Analysis of Population Structure (BAPS) of the Necromys lasiurus Cytochrome b sequences compiled in the present study, showing the four genetic clades, which are color-coded. The vertical black lines separate the sample groups. Insert map shows the Brazilian biomes.
Figure 7 in Necromys lasiurus (Cricetidae: Sigmodontinae) from open areas of the Atlantic Forest of Rio de Janeiro: Population structure and implications for the monitoring of hantaviruses
Figure 7. Mismatch distribution of the Necromys lasiurus samples from the Rio de Janeiro state, Brazil. The observed frequencies are shown in red, and the expected frequencies, in green.
Figure 8 in Necromys lasiurus (Cricetidae: Sigmodontinae) from open areas of the Atlantic Forest of Rio de Janeiro: Population structure and implications for the monitoring of hantaviruses
Figure 8. Plot of the DIYABC Random Forest simulations for the five hypothetical demographic scenarios proposed for the Necromys lasiurus groups (Atlantic Forest ecoregion, Atlantic Forest domain of Rio de Janeiro state, and Arid Diagonal ecoregion), and the location of the observed data, used to validate the best scenario. In this analysis, scenario 1 received 99 "votes", scenario 2, 398 "votes", scenario 3, 229 "votes", and scenario 4, 76 "votes", with 198 "votes" for scenario 5.
Figure 4 in Necromys lasiurus (Cricetidae: Sigmodontinae) from open areas of the Atlantic Forest of Rio de Janeiro: Population structure and implications for the monitoring of hantaviruses
Figure 4. Haplotype network of the Necromys lasiurus Cytochrome b sequences analyzed in the present study, color-coded according to the results of the Bayesian Analysis of Population Structure (BAPS; see Fig. 6). (AF–RJ) Atlantic Forest domain of Rio de Janeiro state. Mutational steps are indicated with stripes.
Figure 5 in Necromys lasiurus (Cricetidae: Sigmodontinae) from open areas of the Atlantic Forest of Rio de Janeiro: Population structure and implications for the monitoring of hantaviruses
Figure 5. Haplotype network of the Necromys lasiurus Cytochrome b sequences obtained in the present study from localities in the Atlantic Forest and Pampa biomes (AF), color-coded by locality. (ARG) Argentina, (MS) Mato Grosso do Sul, (MG) Minas Gerais, (PY) Paraguay, (PR) Paraná, (RJ) Rio de Janeiro, (RS) Rio Grande do Sul, (SC) Santa Catarina, (SP) São Paulo. Mutational steps are indicated with stripes.
Figure 2 in Necromys lasiurus (Cricetidae: Sigmodontinae) from open areas of the Atlantic Forest of Rio de Janeiro: Population structure and implications for the monitoring of hantaviruses
Figure 2. The demographic scenarios formulated for testing in the DIYABC Random Forest analysis. Pop1 = Arid Diagonal ecoregion (AD), Pop2 = Atlantic Forest ecoregion (AF), Pop3 = Atlantic Forest of Rio de Janeiro state (AF-RJ). The scenarios tested here were: (1) AD as the ancestral population of AF, which originates AF-RJ, (2) AD as the ancestral population, which mixes with AF before originating AF-RJ, (3) AF-RJ as the ancestral population, which mixes with AF before originating AD, (4) AD as the ancestral population of AF and AF-RJ, and (5) AD as the ancestral population, mixing with AF-RJ before originating AF.
Figure 3 in Necromys lasiurus (Cricetidae: Sigmodontinae) from open areas of the Atlantic Forest of Rio de Janeiro: Population structure and implications for the monitoring of hantaviruses
Figure 3. Consensus phylogenetic tree produced by the Maximum Likelihood (ML) and Bayesian Inference (BI) analyses of the Cytochrome b sequences of Necromys lasiurus included in the present study. The clades are color-coded according to the results of the Bayesian Analysis of Population Structure (BAPS; see Fig. 6). The samples shaded green are from Atlantic Forest domain of Rio de Janeiro state. The circles at each branch represent the bootstrap values of the ML (left semi-circles) and the posterior probabilities of the BI (right semi-circles). In the left semi-circles, white indicates bootstrap values of 0.40–0.66, while gray represents values of 0.66–0.90, and black, values of over 0.90. In the right semi-circles, white indicates a posterior probability of less than 0.64, with gray representing posterior probabilities of 0.64–0.90, and black, values of over 0.90.
Fig. 24. Lasiurus intermedius AMNH 253710 in The Chiropteran Premaxilla: A Reanalysis of Morphological Variation and Its Phylogenetic Interpretation
Fig. 24. Lasiurus intermedius AMNH 253710, line drawing of the dorsal view of the rostrum. Scale 5 1 mm. Abbreviations: bp body of premaxilla; fr frontal; if incisive fissure; mx maxilla; mxisu maxilloincisive suture; na nasal; naisu nasoincisive suture.
Lasiurus borealis day-roost habitat
<p>The eastern red bat (<em>Lasiurus borealis</em>) is widely considered to be in decline, inspiring interest in identifying important habitats for conservation in the eastern United States. Unfortunately, knowledge of important day-roosting habitats is lacking for much of the species' range. We examined patterns of day-roost selection by male and female eastern red bats at two study sites in southeastern Ohio, U. S. A, to help fill this information gap. We radio-tagged 28 male and 25 female bats during the summers of 2016–2019 and located 53 male and 74 female roosts. Day-roost selection differed between sexes and study areas. In a mostly even-aged forest with significant historical disturbance, we found males and females roosting in trees located at higher elevations, with no clear selection based on tree or stand characteristics. Specifically, males selected trees with larger diameters located at lower, cooler elevations than females, which selected smaller diameter trees found at higher, warmer elevations. However, in a forest with less historical disturbance and more structural diversity, we found sexes differed in how they selected from available habitats. These data show that heterogeneity in environmental conditions can lead to different patterns in selection, even between sites located within a small geographic area. They also show that eastern red bats sexually segregate on the local landscape in the presence of diverse forest conditions but may not do so in the absence of such diversity. We recommend managing forests to maintain structural diversity across an elevational gradient to provide male and female eastern red bats with suitable day-roosting habitat in southeast Ohio.</p>
5 in Una especie nueva de Lasiurus (Chiroptera: Vespertilionidae) del suroeste de Perú
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Data from: Inconspicuous echolocation in hoary bats (Lasiurus cinereus)
Echolocation allows bats to occupy diverse nocturnal niches. Bats almost always use echolocation, even when other sensory stimuli are available to guide navigation. Here, using arrays of calibrated infrared cameras and ultrasonic microphones, we demonstrate that hoary bats (Lasiurus cinereus) use previously unknown echolocation behaviors that challenge our current understanding of echolocation. We describe a novel call type ("micro" calls) that has three orders of magnitude less sound energy than other bat calls used in open habitats. We also document bats flying close to microphones (< 3 m) without producing detectable echolocation calls. Acoustic modeling indicates that bats are not producing calls that exceed 70-75 dB at 0.1 m, a level that would have little or no known use for a bat flying in the open at speeds exceeding 7 m s-1. This indicates that hoary bats sometimes fly without echolocation. We speculate that bats reduce echolocation output to avoid eavesdropping by conspecifics during the mating season. These findings might partly explain why tens of thousands of hoary bats are killed at wind turbines each year. They also challenge the long-standing assumption that bats—model organisms for sensory specialization—are reliant on sonar for nocturnal navigation.
Record of seminole bats (Lasiurus seminolus) mating in spring
<p>Photo and video documentation of seminole bats (Lasiurus seminolus) mating. This occurred on 30 March 2022 at 20:14 CST, outside a residence on East Clamon County Rd in Hortense, TX, approximately 20 miles northeast of central Livingston, in Polk County. Photos and videos created by Tina Crichfield and licensed under CC BY-NC 4.0 (Attribution-NonCommercial 4.0 International).</p>
Lasiurus borealis day-roost habitat
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