Redescoberta de Dendropsophus tintinnabulum (Anura: Hylidae) na bacia do Alto Rio Negro (Amazonas, Brasil) com a descrição do canto de anúncio e da morfologia externa

Dendropsophus tintinnabulum is one of six species of the genus unassigned to any group. Voucher specimens and recordings of this taxon obtained during field work in the municipality of São Gabriel da Cachoeira and elsewhere in the district of Cucuí in Amazonas state, Brazil, permit a description of the advertisement call and external morphological features. Based on overall similarities in size, dorsal color, body shape, advertisement call, and preliminary genomic results, D. tintinnabulum is tentatively assigned to the D. microcephalus GroupDendropsophus tintinnabulum é uma das seis espécies de Dendropsophus que ainda não foi atribuída a nenhum dos grupos de espécies atualmente aceitos. Espécimes-testemunhos e gravações desse táxon obtidos durante trabalho de campo no município de São Gabriel da Cachoeira e no distrito de Cucuí, estado do Amazonas, Brasil, permitem a descrição do canto de anúncio e de caracteres da morfologia externa. A partir de todas as similaridades em relação ao tamanho corporal, padrão de coloração, formato do corpo, canto e dados genômicos preliminares, alocamos tentativamente D. tintinnabulum no grupo de D. microcephalu

A comparative acoustic analysis of species of Vitreorana (Anura: Centrolenidae) from the Brazilian Atlantic Forest and Cerrado, with a description of the call of V. baliomma and insights into the taxonomic status of Cerrado populations

A comparative acoustic analysis of species of Vitreorana (Anura: Centrolenidae) from the Brazilian Atlantic Forest and Cerrado, with a description of the call of V. baliomma and insights into the taxonomic status of Cerrado populations. Advertisement calls are the primary signaling strategy of mating in most anurans. Examining major patterns within and across frog taxa may help to delimit species and understand acoustic communication systems. Herein, the vocalization of Vitreorana baliomma is described and new acoustic descriptions are provided for V. franciscana and V. eurygnatha. Calls of syntopic/sympatric or allopatric populations were compared. The vocalization of V. baliomma is composed of two call types—A and B, with Call A being the advertisement call. The vocalization of V. franciscana is composed of only one call type (Call A), emitted isolated or in series. The vocalization of V. eurygnatha has two types of calls; Call A is similar among Cerrado populations, whereas an Atlantic Forest population has a distinct Call A pattern. The calls of each of these species of the present study is pulsed; however, the calls differ in call duration, pulse organization, or pulse duration, and these differences seem to reflect the allopatric or sympatric/syntopic occurrences of populations. The unique call pattern of the Atlantic Forest population of V. eurygnatha may represent the advertisement call of the nominal species, and the distinct call of the Cerrado population may indicate cryptic diversity in the species.Uma análise acústica comparativa de espécies de Vitreorana (Anura: Centrolenidae) da Mata Atlântica e do Cerrado brasileiros, com a descrição do canto de V. baliomma e considerações sobre o status taxonômico de populações do Cerrado. Cantos de anúncio representam a forma primária de sinalização para reprodução na maioria dos anuros. Avaliar os principais padrões dentro e entre táxons de anuros pode auxiliar na delimitação de espécies e no entendimento de sistemas de comunicação acústica. Nesse trabalho, a vocalização de Vitreorana baliomma é descrita e novas descrições acústicas são fornecidas para V. franciscana e V. eurygnatha. Cantos entre populações em sintopia/simpatria ou alopatria foram comparados. A vocalização de V. baliomma é composta de dois tipos de cantos—A e B, e o Canto A considerado como o canto de anúncio. A vocalização de V. franciscana é composta por um único tipo de canto (Canto A), que é emitido isoladamente ou em séries. A vocalização de V. eurygnatha possui dois tipos de cantos; o Canto A é similar entre populações do Cerrado, enquanto que uma população da Mata Atlântica possui o Canto A com um padrão distinto. Os cantos de cada espécies do presente trabalho são pulsados; no entanto, os cantos diferem em duração do canto, organização dos pulsos, ou duração dos mesmos, e essas diferenças parecem refletir a condição de alopatria ou simpatria/sintopia entre populações. O padrão único observado para a população da Mata Atlântica de V. eurygnatha provavelmente representa o canto de anúncio da espécie nominal, e o canto distinto da população do Cerrado pode indicar diversidade críptica na espécie

The advertisement call of Dendropsophus tritaeniatus (Bokermann, 1965) (Anura: Hylidae)

Teixeira, Bernardo Franco Da Veiga, Giaretta, Ariovaldo Antonio, Pansonato, André (2013): The advertisement call of Dendropsophus tritaeniatus (Bokermann, 1965) (Anura: Hylidae). Zootaxa 3669 (2): 189-192, DOI: 10.11646/zootaxa.3669.2.1

First record of Boana alfaroi (Caminer & Ron, 2014) (Anura: Hylidae) in Brazil

We report the occurrence of the Amazonian hylid Boana alfaroi outside of Ecuador for the first  time. The locality (Assis Brasil, state of Acre) lies in northern Brazil, approximately 1,280 km southeast from the easternmost records in Ecuador. Additionally, we describe the vocalization of a male of B. alfaroi from the Brazilian population, including a second type of note besides the advertisement note. Boana alfaroi may occur across Amazonian lowland forests of Ecuador, northern Peru, and the Brazilian states of Acre and Amazonas.

Distribution, call and habitat of Pristimantis dundeei (Anura, Craugastoridae)

Two species of Pristimantis are known to exist in the Cerrado Biome, P. dundeei and P. ventrigranulous. Here we report on new localities for P. dundeei that extend its known distribution and present new data on its call and habitat. The new data are from Santo Antônio do Leverger, Barra do Garças and Pontal do Araguaia (MT). Calls were noticeably pulsed to the human ear, with 2–12 similar notes released at a rate of 16–21/s. Calls lasted from 136 to 642 ms, with frequency peaks at 3937–4125 kHz. We found three emphasized frequency bands that were not harmonically related one each other, the second being the dominant one. Males called from a wide range of habitats, from bushes or trees, from open areas or inside forests. Our data from Barra do Garças extend the distribution of P. dundeei up to 380 km to east, which place it in close range to P. ventrigranulous. With regard to characteristics of their call and morphology, these two species cannot be distinguished by any feature. Further studies that consider their genetic distance would be decisive to an eventual synonymization of the two species

New bioacoustic and distributional data on Bokermannohyla sapiranga Brandão et al., 2012 (Anura: Hylidae): revisiting its diagnosis in comparison with B. pseudopseudis (Miranda-Ribeiro, 1937)

Carvalho, Thiago Ribeiro De, Giaretta, Ariovaldo Antonio, Teixeira, Bernardo Franco Da Veiga, Martins, Lucas Borges (2013): New bioacoustic and distributional data on Bokermannohyla sapiranga Brandão et al., 2012 (Anura: Hylidae): revisiting its diagnosis in comparison with B. pseudopseudis (Miranda-Ribeiro, 1937). Zootaxa 3746 (2): 383-392, DOI: http://dx.doi.org/10.11646/zootaxa.3746.2.

Influence of curing mode of resin luting cements on bond strength to dentin

hesive, dual-polymerizing resin cements require no treatment to the prepared tooth surfaces before cementation. Aim: The aim of this study was to evaluate the influence of curing mode on bond strength (BS) of three cementing systems to bovine dentin. Methods: The buccal enamel surfaces of 50 bovine incisors were removed to expose dentin and to flat the surface. The teeth were divided into five groups (n=10), which consisted of two resin cements (Multilink and Clearfil SA Cement) that were tested in dual- (halogen light for 40 s) and self-cured modes, and a control (RelyX ARC). Two cylinders of resin cements (1.0 mm X 0.75 mm) were prepared on each bonded dentin surface. After 24h at 37oC, resin cylinders were subjected to micro-shear testing in a universal testing machine (4411/Instron - 0.5 mm/min). Data were statistically analyzed by two-way ANOVA, Tukey and Dunnett`s test (5%). Results: Multilink showed higher BS than those observed on Clearfil SA. Light-curing resulted in higher BS for both Multilink and Clearfil SA. When Multilink was light-cured, no significant difference on BS was demonstrated between it and RelyX ARC. Conclusions: The highest BS values were obtained in control group and light-cured Multilink resin cement

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Data from: Trophic niche changes associated to habitat fragmentation in a Neotropical bat species

Habitat fragmentation could alter ecological traits including species trophic habits. Here, we used carbon and nitrogen stable isotope ratios to establish differences in isotopic niche width and food resource use between forest fragments and the continuous forest for the phyllostomid frugivorous bat Artibeus lituratus. Using mist nests, we captured bats from two forest fragments and two sites in continuous forest, and sampled from each individual captured three body tissues with contrasting turnover rates (skin, muscle and liver). Samples were collected between February-March (austral summer) and between August-September (austral winter). In addition, in each sampling site and season we collected potential food resources (fruits and insects) consumed by our A. lituratus. Our findings indicate that A. lituratus had a predominantly omnivorous diet, with high consumption of insects during summer in forest fragments. The increasing consumption of insects in these fragments seems to have led to a wider isotopic niche, in relation to the continuous forest. Because A. lituratus is typically a seed disperser, changes in trophic habits in the forest fragments from frugivory to insectivory may diminish their role in forest regeneration