TY - JOUR T1 - The distribution and calls of Vraem’ Treefrog, Dendropsophus vraemi (Caminer, Milá, Jansen, Fouquet, Venegas, Chávez, Lougheed, and Ron 2017), with comments on its conservation status JF - Amphibian & Reptile Conservation Y1 - 2021 A1 - Germán Chávez A1 - Andy C. Barboza A1 - Michelle E. Thompson KW - Amphibia KW - Anura KW - Data Deficient KW - Peru KW - South America KW - vocalization AB -

Dendropsophus vraemi is a recently described frog that is only known from the type locality, in La Mar province, Ayacucho, Peru. Here, we present new data on its geographic distribution, coloration in life, and habitat, as well as descriptions of the advertisement and aggressive calls of this species. The new localities extend the known distribution range 151 km northwest and the elevation range down to 250 m asl, which is nearly 450 m lower than previously known. Our findings are inconsistent with its current IUCN categorization of Least Concern (LC), and we suggest that this species should be categorized as Data Deficient.

VL - 15 IS - 2 ER - TY - JOUR T1 - The rôle of call frequency and the auditory papillae in phonotactic behavior in male Dart-poison frogs Epipedobates femoralis (Dendrobatidae) Y1 - 2004 A1 - Hödl, W. A1 - Amézquita, A. A1 - Narins, P. M. KW - Acoustic playback experiment KW - Anura KW - Call frequency modulation KW - phonotaxis KW - Territorial behavior AB -

Territorial males of the pan-Amazonian Dart- poison frog, Epipedobates femoralis, are known to present stereotypic phonotactic responses to the play- back of conspecific and synthetic calls. Fixed site attachment and a long calling period within an envi- ronment of little temperature change render this terres- trial and diurnal pan-Amazonian frog a rewarding species for field bioacoustics. In experiments at the field station Arataı ̈, French Guiana, we tested whether the prominent frequency modulation of the advertisement- call notes is critical for eliciting phonotactic responses. Substitution of the natural upward sweep by either a pure tone within the species frequency range or a reverse sweep did not alter the males’ phonotactic behavior. Playbacks with artificial advertisement calls embedded in high levels of either low-pass or high-pass masking noise designed to saturate nerve fibers from either the amphibian papilla or basilar papilla showed that male phonotactic behavior in this species is subserved by activation of the basilar papilla of the inner ear.

UR - http://link.springer.com/10.1007/s00359-004-0536-1 ER - TY - JOUR T1 - Diverse patterns of temporal selectivity in the evoked vocal responses of a frog from the temperate austral forest, Batrachyla taeniata (Batrachylidae) Y1 - 2019 A1 - Penna, Mario A1 - Solís, Rigoberto A1 - Corradini, Paulina A1 - Moreno-Gómez, Felipe N. KW - Anura KW - Batrachylidae KW - evoked vocal responses KW - temporal selectivity AB -

Evoked vocal responses of male frogs Batrachyla taeniata to syn- thetic advertisement calls and variants having different temporal features altered parametrically were studied to identify patterns of evoked vocal responses (EVRs) that conform with static and dynamic modes of variation and with corresponding selective processes affected by different temporal components of the acoustic signals. Frogs responded with higher call rates and longer call durations to stimuli of 25–100 pulses/s, resembling conspecific calls. This response mode was not related to spectral differences among stimuli, as frogs responded similarly to a series of stimuli built with noise instead of tones. Frogs responded with lower call rates and shorter call durations to a non-pulsed 500-ms tone having the duration of the complete call, a decrement related to the dissimilar spectral composition of the tone, restricted to a single frequency, as frogs responded strongly to a non-pulsed 500-ms stimulus built with noise instead of a 2.1-kHz sinusoidal. Frogs responded with lower call rates and shorter call durations to synthetic calls composed by 3 or less pulses. The EVRs for pulse rate stimuli series are consistent with a stabilizing selectivity pat- tern, whereas EVRs for pulse duration and call duration stimuli series conform with directional selectivity patterns.

UR - https://www.tandfonline.com/doi/full/10.1080/09524622.2019.1616616https://www.tandfonline.com/doi/pdf/10.1080/09524622.2019.1616616 ER - TY - JOUR T1 - Almost a hundred years later, the advertisement call of Aparasphenodon brunoi Miranda-Ribeiro 1920 (Anura: Hylidae) from the Atlantic Forest JF - Zootaxa Y1 - 2019 A1 - FREIRE, IASODHARA RODRIGUES A1 - THOMASSEN, HANS A1 - ROCHA, PEDRO CARVALHO A1 - LEITE, FELIPE SÁ FORTES KW - Amphibia KW - Anura KW - Hylidae AB -

The Neotropical genus Aparasphenodon Miranda-Ribeiro is composed of five recognized species commonly referred as “casque-headed frogs” (Frost 2018). Aparasphenodon brunoi Miranda-Ribeiro occurs in Atlantic Forest lowlands from the states of São Paulo to Bahia, Brazil (Feio et al. 1998; Mollo Neto & Teixeira Jr. 2012; Ruas et al. 2013). The biology of most Aparasphenodon species is poorly known. Within the genus, until now only Aparasphenodon arapapa Pimenta, Napoli & Haddad has its call formally described (Lourenço-de-Moraes et al., 2013, Forti et al., 2018, Guerra et al., 2018). Herein, we describe the advertisement call of Aparasphenodon brunoi Miranda-Ribeiro.

VL - 4550 UR - https://biotaxa.org/Zootaxa/issue/view/zootaxa.4550.3https://biotaxa.org/Zootaxa/article/view/zootaxa.4550.3.10 IS - 3 JO - Zootaxa ER - TY - JOUR T1 - The vocalization of Gastrotheca fissipes (Boulenger, 1888) (Anura, Hemiphractidae) from the state of Pernambuco, northeastern Brazil JF - Zootaxa Y1 - 2019 A1 - ROBERTO, IGOR JOVENTINO A1 - SANTOS, EDNILZA MARANHÃO DOS A1 - Thiago R. De Carvalho KW - Amphibia KW - Anura KW - Hemiphractidae AB -

Gastrotheca Fitzinger, 1843 (Hemiphractidae) is composed of 70 species classified into four species groups, among which Gastrotheca fissipes (Boulenger, 1882) and G. microdiscus (Andersson, 1910) species groups are distributed in the Brazilian Atlantic Forest (Castroviejo-Fisher et al. 2015; Duellman & Venegas 2016). The Gastrotheca fissipes group comprises six species: G. fissipes, G. flamma Juncá & Nunes, 2008, G. megacephala Izecksohn, Carvalho-e-Silva & Peixoto, 2009, G. prasina Teixeira Jr. et al. 2012, G. pulchra Caramaschi & Rodrigues, 2007, and G. recava Teixeira Jr. et al. 2012, and most of these species are distributed in the northern Atlantic Forest, the most threatened region of the Atlantic Forest Domain (Ribeiro et al. 2009).

VL - 4543 UR - https://biotaxa.org/Zootaxa/issue/view/zootaxa.4543.2https://biotaxa.org/Zootaxa/article/view/zootaxa.4543.2.6 IS - 2 JO - Zootaxa ER - TY - JOUR T1 - The advertisement call of the treefrog Nyctimantis rugiceps Boulenger, 1882 (Anura: Hylidae), with notes on its natural history and toxicity JF - Zootaxa Y1 - 2018 A1 - Camila Camargo De Souza A1 - Mauricio Rivera-Correa A1 - Castroviejo-Fisher, Santiago KW - Amphibia KW - Anura KW - Hylidae AB -

Nyctimantis rugiceps Boulenger, 1882 (Fig. 1A) is a Neotropical treefrog (Duellman & Trueb 1976; Faivovich et al. 2005) known only from disjunct localities in Amazonian Colombia, Ecuador, and Peru (Pérez-Villota et al. 2009). This species has the skin of the skull co-ossified and reproduces—including calling behavior, egg deposition and tadpole development—in water-filled tree or bamboo cavities (Duellman & Trueb 1976; Duellman 1978). Given its secretive behavior, this is a poorly known species and, as noted by Duellman (1978: 169), “the major clue to the life history of Nyctimantis is the calling behavior of the males”. Unfortunately, the only quantitative description of the advertisement call of N. rugiceps is a brief passage in Duellman (1978) based on four specimens from Santa Cecilia, Ecuador, where important variables are missing (e.g., call duration). More importantly, graphs illustrating the waveform and spectrogram are missing. Considering these limitations and the importance of advertisement calls to the study of anurans (Köhler et al. 2017), we provide a quantitative description using a call recording obtained in Leticia, Amazonas, Colombia.

VL - 4532 UR - https://biotaxa.org/Zootaxa/issue/view/zootaxa.4532.3https://biotaxa.org/Zootaxa/article/view/zootaxa.4532.3.8 IS - 3 JO - Zootaxa ER - TY - JOUR T1 - Integrating bioacoustics, DNA barcoding and niche modeling for frog conservation – The threatened balloon frogs of Sri Lanka JF - Global Ecology and Conservation Y1 - 2018 A1 - Wijayathilaka, Nayana A1 - Senevirathne, Gayani A1 - Bandara, Champika A1 - Rajapakse, Sanath A1 - Pethiyagoda, Rohan A1 - Meegaskumbura, Madhava KW - Anura KW - Distribution modeling KW - Exploration KW - population monitoring KW - Species boundaries KW - vocalization AB -

Discovering and monitoring anuran populations that are in decline, and ascertaining boundaries for cryptic and rare species, is a challenge for their conservation management. Here, we integrate three techniques, bioacoustics (call), niche modeling and DNA barcoding as a test case to investigate how the combination of these methods can enhance search efficiency for previously unknown populations, especially for those species that are threatened. As a focal group, we considered a clade in the genus Uperodon earlier referred to as Ramanella, represented by four endemic species in Sri Lanka (U. nagaoi – Endangered; U. palmatus – Critically Endangered; U. obscurus – Vulnerable and U. rohani – possibly Least Concern); we focus on the two highly threatened species (U. nagaoi and U. palmatus). We used mitochondrial DNA barcodes (16S rRNA) to link species accurately to their call and subsequently predicted species distributions using MaxEnt-based niche modeling of known species locations and forest cover data to increase the efficiency of searching for new populations. Lastly, we analyzed call data for accurate and rapid identification of new and viable populations. Following enhanced predicted distribution models, we visited 14 potential sites and sampled for Uperodon calls of the two highly threatened species. Within a period of two weeks of fieldwork, we discovered two new populations of U. nagaoi and one population of U. palmatus by identifying their calls in areas predicted by niche modeling; we also confirm species identities at several previously unconfirmed locations. Finally, we included the new locations to enhance the distributional predictions for the threatened species. We discuss our results in the context of integrating methods to facilitate conservation of rare and threatened frog species.

UR - https://linkinghub.elsevier.com/retrieve/pii/S2351989418301781https://api.elsevier.com/content/article/PII:S2351989418301781?httpAccept=text/xmlhttps://api.elsevier.com/content/article/PII:S2351989418301781?httpAccept=text/plain JO - Global Ecology and Conservation ER - TY - JOUR T1 - Description of the advertisement calls of four species of Amazophrynella (Anura:Bufonidae) JF - Zootaxa Y1 - 2018 A1 - Vinicius Tadeu De Carvalho A1 - Robson Waldemar Ávila A1 - KAWASHITA-RIBEIRO, RICARDO A. A1 - Tomas Hrbek A1 - Marcelo Gordo KW - Amphibia KW - Anura KW - Bufonidae AB -

Amazophrynella comprises 11 small bufonid species with a pan-Amazonian distribution (Fouquet et al. 2012a, b; Rojas et al. 2016, Rojas et al. 2018). All species inhabit the forest leaf litter, breed in seasonal puddles and are diurnally and nocturnally active (Fouquet et al. 2012b; Rojas et al. 2014; 2015; 2016). Until now only one nominal species, A. javierbustamantei, and two putative lineages—A. moisesii (Rio Yuyapichis, Peru) and A. siona (Santa Cecilia, Ecuador)—had their advertisement calls formally described (Duellman 1978; Schlüter 1981; Rojas et al. 2016). Herein, we described for the first time the advertisement calls from additional four species of Amazophrynella.

VL - 4459 UR - https://biotaxa.org/Zootaxa/issue/view/zootaxa.4459.1https://biotaxa.org/Zootaxa/article/view/zootaxa.4459.1.11 IS - 1 JO - Zootaxa ER - TY - JOUR T1 - Yet another small brown frog from high altitude on the Marojejy Massif, northeastern Madagascar (Anura: Mantellidae) JF - Zootaxa Y1 - 2017 A1 - Scherz, Mark D. A1 - Razafindraibe, Jary H. A1 - Rakotoarison, Andolalao A1 - Dixit, Nadi M. A1 - Bletz, Molly C. A1 - Frank Glaw A1 - Miguel Vences KW - Amphibia KW - Anura KW - Gephyromantis KW - Gephyromantis schilfi KW - Gephyromantis tandroka KW - Gephyromantis tohatra sp. nov. KW - Mantellidae AB - Madagascar hosts a high diversity of small brown frogs. In this paper, we add another one by describing Gephyromantis (Duboimantis) tohatra sp. nov. The new species is a small brown mantellid frog discovered on a recent expedition to Marojejy National Park in northeastern Madagascar. It is characterised, among other things, by its small size (snout-vent length ~33 mm), an orange to yellowish belly, two dorsolateral ridges, and a distinctive call composed of 7–10 pulsed notes. The new species occurs sympatrically with other members of the subgenus Duboimantis at high altitude (~1700 m above sea level), including its sister species G. schilfi from which it radically differs by advertisement call and by a substantial genetic divergence of 4.3% uncorrected pairwise distance in the mitochondrial 16S rRNA gene. It thus joins the diverse assemblage of Gephyromantis species known from high altitudes on the mountain massifs of northern Madagascar. VL - 4347 UR - https://biotaxa.org/Zootaxa/issue/view/zootaxa.4347.3https://biotaxa.org/Zootaxa/article/view/zootaxa.4347.3.9https://biotaxa.org/Zootaxa/article/viewFile/34380/30388https://biotaxa.org/Zootaxa/article/viewFile/34380/30388 IS - 3 JO - Zootaxa ER - TY - JOUR T1 - The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice JF - Zootaxa Y1 - 2017 A1 - Jörn Köhler A1 - Martin Jansen A1 - Ariel Rodríguez A1 - Philippe J. R. Kok A1 - Luís Felipe Toledo A1 - Emmrich, Mike A1 - Frank Glaw A1 - Célio F. B. Haddad A1 - Mark-Oliver Rödel A1 - Miguel Vences KW - Amphibia KW - Anura KW - call KW - call analysis KW - call description KW - call variation KW - definitions KW - note KW - pulse KW - sound KW - species delimitation KW - taxonomy KW - vocalization AB -

Vocalizations of anuran amphibians have received much attention in studies of behavioral ecology and physiology, but also provide informative characters for identifying and delimiting species. We here review the terminology and variation of frog calls from a perspective of integrative taxonomy, and provide hands-on protocols for recording, analyzing, comparing, interpreting and describing these sounds. Our focus is on advertisement calls, which serve as premating isolation mechanisms and, therefore, convey important taxonomic information. We provide recommendations for terminology of frog vocalizations, with call, note and pulse being the fundamental subunits to be used in descriptions and comparisons. However, due to the complexity and diversity of these signals, an unequivocal application of the terms call and note can be challenging. We therefore provide two coherent concepts that either follow a note-centered approach (defining uninterrupted units of sound as notes, and their entirety as call) or a call-centered approach (defining uninterrupted units as call whenever they are separated by long silent intervals) in terminology. Based on surveys of literature, we show that numerous call traits can be highly variable within and between individuals of one species. Despite idiosyncrasies of species and higher taxa, the duration of calls or notes, pulse rate within notes, and number of pulses per note appear to be more static within individuals and somewhat less affected by temperature. Therefore, these variables might often be preferable as taxonomic characters over call rate or note rate, which are heavily influenced by various factors. Dominant frequency is also comparatively static and only weakly affected by temperature, but depends strongly on body size. As with other taxonomic characters, strong call divergence is typically indicative of species-level differences, whereas call similarities of two populations are no evidence for them being conspecific. Taxonomic conclusions can especially be drawn when the general advertisement call structure of two candidate species is radically different and qualitative call differences are thus observed. On the other hand, quantitative differences in call traits might substantially vary within and among conspecific populations, and require careful evaluation and analysis. We provide guidelines for the taxonomic interpretation of advertisement call differences in sympatric and allopatric situations, and emphasize the need for an integrative use of multiple datasets (bio-acoustics, morphology, genetics), particularly for allopatric scenarios. We show that small-sized frogs often emit calls with frequency components in the ultrasound spectrum, although it is unlikely that these high frequencies are of biological relevance for the majority of them, and we illustrate that detection of upper harmonics depends also on recording distance because higher frequencies are attenuated more strongly. Bioacoustics remains a prime approach in integrative taxonomy of anurans if uncertainty due to possible intraspecific variation and technical artifacts is adequately considered and acknowledged.

VL - 4251 UR - http://biotaxa.org/Zootaxa/issue/view/zootaxa.4251.1 IS - 1 JO - Zootaxa ER -