Thyroptera tricolor: Tavares, V. & Mantilla, H.

2015 ◽  
Author(s):  
Keyword(s):  
Thyroptera Tricolor

scholarly journals Morcegos da região sul do Brasil: análise comparativa da riqueza de espécies, novos registros e atualizações nomenclaturais (Mammalia, Chiroptera)

2010 ◽  
Vol 100 (1) ◽  
pp. 25-34 ◽  
Author(s):  
Fernando C. Passos ◽  
João M. D. Miranda ◽  
Itiberê P. Bernardi ◽  
Nathalia Y. Kaku-Oliveira ◽  
Luana C. Munster
Keyword(s):  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Santa Catarina ◽  
Trachops Cirrhosus ◽  
Thyroptera Tricolor

Uma análise comparativa da riqueza de espécies de morcegos da Região Sul do Brasil é apresentada, assim como análises de similaridades entre estados. O estado do Paraná apresentou a maior riqueza de espécies de morcegos, com 64 espécies, seguido por Santa Catarina com 46 e pelo Rio Grande do Sul com 40. A família Phyllostomidae influencia fortemente este padrão de riqueza. As distribuições geográficas de Trachops cirrhosus (Spix, 1823), Artibeus cinereus (Gervais, 1851) e Thyroptera tricolor Spix, 1823 são ampliadas até o Paraná, estabelecendo um novo limite sul de distribuição dessas espécies e da família Thyropteridae. Além disso, Myotis dinellii Thomas, 1902 foi registrado pela primeira vez no Brasil, em Santa Catarina e no Rio Grande do Sul, estabelecendo um novo limite leste para sua distribuição. Ainda, é ampliada a distribuição de Eptesicus taddeii Miranda, Bernardi & Passos, 2006 a partir de seu primeiro registro no estado do Rio Grande do Sul. Uma lista atualizada dos morcegos dos estados sul-brasileiros é apresentada bem como algumas adequações nomenclaturais. É enfatizada a importância do emprego de maiores esforços de campo para levantamentos da quiropterofauna, que assim podem contribuir para medidas de conservação embasadas em inventariamentos e coleções científicas representativas.

Constant-frequency and frequency-modulated components in the echolocation calls of three species of small bats (Emballonuridae, Thyropteridae, and Vespertilionidae)

1999 ◽  
Vol 77 (12) ◽  
pp. 1891-1900 ◽  
Author(s):  
M B Fenton ◽  
J Rydell ◽  
M J Vonhof ◽  
J Eklöf ◽  
W C Lancaster
Keyword(s):  
Single Frequency ◽  
Constant Frequency ◽  
Field Station ◽  
Echolocation Calls ◽  
Low Intensity ◽  
Low Duty Cycle ◽  
Frequency Components ◽  
Ca 50 ◽  
Higher Harmonic ◽  
Thyroptera Tricolor

The echolocation calls of Rhychonycteris naso (Emballonuridae), Thyroptera tricolor (Thyropteridae), and Myotis riparius (Vespertilionidae) were recorded at the Cãno Palma Field Station in Costa Rica in February 1998. All three species produced echolocation calls at low duty cycle (signal on ~10% of the time). While T. tricolor produced low-intensity echolocation calls that were barely detectable when the bats were <0.5 m from the microphone, the other two species produced high-intensity calls, readily detectable at distances >5 m. Myotis riparius produced calls that swept from about 120 kHz to just over 50 kHz in about 2 ms. We found no evidence of harmonics in these calls. Rhynchonycteris naso and T. tricolor produced multiharmonic echolocation calls. In R. naso the calls included narrowband and broadband components and varied in bandwidth, sweeping from just under 100 kHz to around 75 kHz in over 5 ms. Most calls were dominated by the higher harmonic (ca. 100 kHz), but some also included a lower one (ca. 50 kHz). The calls of T. tricolor were 5-10 ms long and dominated by a single frequency (ca. 45 kHz), sometimes with a ca. 25 kHz component. The echolocation calls of all three species included frequency-modulated and constant-frequency components. While these terms describe the components of the echolocation calls, they do not necessarily describe the bats' echolocation behaviour.

Roost availability and population size of Thyroptera tricolor, a leaf-roosting bat, in north-eastern Costa Rica

2004 ◽  
Vol 20 (3) ◽  
pp. 291-305 ◽  
Author(s):  
Maarten J. Vonhof ◽  
M. Brock Fenton
Keyword(s):  
Costa Rica ◽  
Population Size ◽  
Rain Forest ◽  
Size Range ◽  
Habitat Availability ◽  
Occupancy Rate ◽  
Lowland Rain Forest ◽  
Closed Population ◽  
North Eastern ◽  
Thyroptera Tricolor

Estimates of roosting habitat availability and population size using unbiased sampling regimes are completely lacking for any bat species. The use of conspicuous and accessible roosts in the developing, rolled leaves of Heliconia and Calathea plants by Thyroptera tricolor (Spix's disc-winged bat) provided an ideal opportunity to address this need. To assess roost availability and population size, the number of occupied and unoccupied leaves and bats in known areas in an area of lowland rain forest in north-eastern Costa Rica were quantified in 1998–99. A high density of leaves was available on any given day (mean: 43 leaves ha−1), but the density of roost leaves was low (mean: 2.5 leaves ha−1), corresponding with a low occupancy rate of 5.7 or 12% based on different methods of estimation. Developing leaves were available for 8–16 h in the preferred size range of leaves used by T. tricolor, and a maximum of 28–60 h, depending on the plant species. Using closed-population mark–recapture models, the 5.69-ha study area supported 261 individuals over a 4-mo period in 1998, corresponding to a density of 43 bats ha−1. These results have important implications for the results of studies on bat community structure and rarity, and for the behaviour and ecology of T. tricolor.

scholarly journals Specialized landing maneuvers in Spix's disk-winged bats (Thyroptera tricolor) reveal linkage between roosting ecology and landing biomechanics

2019 ◽  
Vol 222 (20) ◽  
pp. jeb204024 ◽  
Author(s):  
David B. Boerma ◽  
José P. Barrantes ◽  
Charles Chung ◽  
Gloriana Chaverri ◽  
Sharon M. Swartz
Keyword(s):  
Roosting Ecology ◽  
Landing Biomechanics ◽  
Thyroptera Tricolor

scholarly journals Repeatability in the contact calling system of Spix's disc-winged bat ( Thyroptera tricolor )

2015 ◽  
Vol 2 (1) ◽  
pp. 140197 ◽  
Author(s):  
Gloriana Chaverri ◽  
Erin H. Gillam
Keyword(s):  
Individual Differences ◽  
Group Membership ◽  
Acoustic Signals ◽  
Frequency Dependent Selection ◽  
Calling Behaviour ◽  
Vocal Behaviour ◽  
Contact Calls ◽  
Group Members ◽  
Thyroptera Tricolor ◽  
Future Work

Spix's disc-winged bat ( Thyroptera tricolor ) forms cohesive groups despite using an extremely ephemeral roost, partly due to the use of two acoustic signals that help individuals locate roost sites and group members. While the calls that aid in group cohesion are commonly used, some bats rarely or never produce them. Here, we examine whether the differences observed in the contact calling behaviour of T. tricolor are repeatable; that is, whether individual differences are consistent. We recorded contact calls of individuals in the field and rates and patterns of vocalization. To determine whether measured variables were consistent within individuals, we estimated repeatability ( R ), which compares within-individual to among-individual variance in behavioural traits. Our results show that repeatability for call variables was moderate but significant, and that repeatability was highest for the average number of calls produced ( R =0.46–0.49). Our results demonstrate important individual differences in the contact calling behaviour of T. tricolor ; we discuss how these could be the result of mechanisms such as frequency-dependent selection that favour groups composed of individuals with diverse vocal strategies. Future work should address whether changes in social environment, specifically group membership and social status, affect vocal behaviour.

Characterization of microsatellite loci in Spix's disk-winged bats (Thyroptera tricolor )

2001 ◽  
Vol 1 (1-2) ◽  
pp. 73-75 ◽  
Author(s):  
M. J. Vonhof ◽  
C. S. Davis ◽  
C. Strobeck ◽  
M. B. Fenton
Keyword(s):  
Microsatellite Loci ◽  
Thyroptera Tricolor

Sticking ability in Spix's disk-winged bat, Thyroptera tricolor (Microchiroptera: Thyropteridae)

2001 ◽  
Vol 79 (12) ◽  
pp. 2261-2267 ◽  
Author(s):  
Daniel K Riskin ◽  
M Brock Fenton
Keyword(s):  
Rough Surfaces ◽  
The Other ◽  
Smooth Surfaces ◽  
Wet Adhesion ◽  
Porous Aluminum ◽  
Porous Sheet ◽  
Sheet Aluminum ◽  
Thyroptera Tricolor

Roosting Spix's disk-winged bats, Thyroptera tricolor, use disks on their wrists and ankles to cling to smooth leaves. In 584 trials we tested the ability of 31 T. tricolor and 121 other bats lacking disks (461 trials with 18 species from three families) to adhere to (i) medium-grade sandpaper, (ii) Lexan polycarbonate, (iii) solid sheet aluminum, and (iv) porous sheet aluminum. While T. tricolor readily adhered to smooth surfaces, the other species did not. Thyroptera tricolor did not show the same ability to adhere to rough surfaces as the other species that were tested. As was demonstrated by their performance on porous aluminum and sandpaper, the disks of T. tricolor worked by suction and sometimes by wet adhesion. In the course of adapting to adhere to smooth surfaces, T. tricolor appear to have lost some ability to roost on rough ones, although one adult T. tricolor climbed on a screen covering the inside walls of the polycarbonate cage by interlocking its thumb claws with the surface.

scholarly journals Social calls used by a leaf-roosting bat to signal location

2010 ◽  
Vol 6 (4) ◽  
pp. 441-444 ◽  
Author(s):  
Gloriana Chaverri ◽  
Erin H. Gillam ◽  
Maarten J. Vonhof
Keyword(s):  
Information Transfer ◽  
Mate Attraction ◽  
The Social ◽  
Social Calls ◽  
Group Members ◽  
Thyroptera Tricolor

Social calls in bats have many functions, including mate attraction and maintaining contact during flight. Research suggests that social calls may also be used to transfer information about roosts, but no studies have yet demonstrated that calls are used to actively attract conspecifics to roosting locations. We document the social calls used by Spix's disc-winged bat ( Thyroptera tricolor ) to actively recruit group members to roosts. In acoustic trials, we recorded two sets of calls; one from flying individuals termed ‘inquiry calls’, and another from roosting bats termed ‘response calls’. Inquiry calls were emitted by flying bats immediately upon release, and quickly (i.e. 178 ms) elicited production of response calls from roosting individuals. Most flying bats entered the roost when roosting individuals responded, while few bats entered the roost in the absence of a response. We argue that information transfer concerning roost location may facilitate sociality in T. tricolor , given the ephemeral nature of roosting structures used by this species.

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