Article
Ecology
Nobunosuke Itakura, Masaru Sakai, Ryohei Sato, Shogo Nishihara, Takehito Yoshida, Izumi Washitani
Summary: The study found that larger forest green tree frogs have louder and lower calls, while smaller tree frogs have smaller and higher calls and call more frequently. Moreover, as the chorus noise increases, the calls become lower and the number of calls decreases. These findings suggest that forest green tree frogs emit lower calls or refrain from calling when the chorus noise increases, and that there is intraspecific variation in male advertisement call strategies in response to chorus noise.
POPULATION ECOLOGY
(2023)
Article
Biodiversity Conservation
Ningning Liu, Shurong Zhong, Tianhou Wang, Xiuzhen Li, Li Wei, Chunjing Zou, Shanshan Zhao, Ben Li
Summary: Urbanization has a significant impact on amphibians, leading to habitat loss, degradation, and fragmentation. This study investigated the effects of urbanization and other factors on the advertisement calls of two frog species. The results showed that urbanization and other variables had significant effects on the call parameters of these species, highlighting the importance of understanding amphibian reproductive behaviors and strategies in urban environments.
Article
Multidisciplinary Sciences
Beth Brady, Eric Angel Ramos, Laura May-Collado, Nelmarie Landrau-Giovannetti, Natalija Lace, Maria Renee Arreola, Gabriel Melo Santos, Vera Maria Ferreira da Silva, Renata S. Sousa-Lima
Summary: This study investigates the vocal characteristics of calves of Amazonian manatees and the two subspecies of the West Indian manatee, revealing interspecific differences and their relationship with body size.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Slade Allen-Ankins, Lin Schwarzkopf
Summary: The acoustic niche hypothesis suggests that vocal species should evolve to partition acoustic space to avoid interference with breeding signals. This study uses a continental-scale dataset collected by citizen scientists to show that frogs do partition acoustic space.
SCIENTIFIC REPORTS
(2022)
Article
Biology
Longhui Zhao, Jichao Wang, Haodi Zhang, Tongliang Wang, Yue Yang, Yezhong Tang, Wouter Halfwerk, Jianguo Cui
Summary: This study evaluates whether physical movements of parasite defense behavior increase the complexity and attractiveness of an acoustic sexual signal in little torrent frogs, showing that these movements can influence female preference for acoustic signals. The results suggest that females may play an important role in incorporating multiple signal modalities.
Article
Behavioral Sciences
Gina Marcela Jimenez-Vargas, Fernando Vargas-Salinas
Summary: Anthropogenic noise can restrict acoustic communication among poison frogs, but some males increase their call frequency to maintain signal-to-noise ratio for communication in noisy habitats. Further studies are needed to confirm this hypothesis due to the small magnitude of increase in call frequency for most males.
Article
Biology
Ke Fang, Yezhong Tang, Baowei Zhang, Guangzhan Fang
Summary: Music frogs show species-specific neural responses to calls of different species of genus Nidirana, indicating a correlation with acoustic characteristics and phylogenetic relationships.
COMMUNICATIONS BIOLOGY
(2022)
Article
Psychology, Biological
Lucas Rodriguez Forti, Maria Rita de Melo Sampaio, Clara Resende Pires, Judit K. Szabo, Luis Felipe Toledo
Summary: This study explores the effect of noise on amphibians' acoustic communication and finds that frogs can adjust their calls to minimize the masking effect of background noise by reducing the frequency bandwidth.
BEHAVIOURAL PROCESSES
(2022)
Article
Zoology
Dasi Ong, Shahriza Shahrudin
Summary: This study reports the diurnal call of the Pulchrana glandulosa frog from Langkawi Island, Peninsular Malaysia. The frog exhibits both repetitive advertisement calls and multiple-note response calls. The discovery of diurnal calls in this frog species, which also calls nocturnally, provides valuable information for conservation management and decision-making purposes.
Article
Geochemistry & Geophysics
Ting Lei, Huazhong Wang, Bo Feng
Summary: Geophysical exploration has developed from qualitative seismic imaging to quantitative imaging, with broadband acoustic impedance being the core. This article proposes an alternative method for estimating broadband impedance by first estimating background velocity, density, and broadband reflectivity, and then fusing them through information fusion. The method has proven to be effective in both numerical experiments and field data applications, and impedance shows higher interpretability than reflectivity.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Multidisciplinary Sciences
Leandro A. Silva, Ricardo Marques, Henrique Folly, Diego J. Santana
Summary: This study describes a new species of Allobates distinguished by coloration, call types, and morphology from its congeners. Additionally, a sympatric population of A. tapajos was found to have a relatively high genetic distance compared to the nominal species, raising questions about the current taxonomy.
Article
Zoology
Luiz Fernando Carmo, Juliana Alves, Iuri R. Dias, Mirco Sole, Caio De Mira-Mendes, Laisa Santos, Mario Barbosa S. Junior, Cassio Zocca, Rodrigo B. Ferreira, Joao Victor A. Lacerda
Summary: The study describes the advertisement call characteristics of Gabohyla pauloalvini, provides new distribution records, and updates the map for this species. Three new populations of Gabohyla pauloalvini have been recorded, extending its distribution by 60 km south. However, Gabohyla pauloalvini is still known only from a few localities.
Article
Zoology
Longhui Zhao, Juan C. Santos, Jichao Wang, Jianghong Ran, Yezhong Tang, Jianguo Cui
Summary: By studying 106 species of amphibians, differences in dominant frequency and frequency contour were found between species inhabiting different water environments. These differences were mainly explained by body size and habitat structure, with species in lentic habitats tending to have well-defined frequency modulation and harmonic traits in their advertisement calls. Additionally, our results suggest that flowing-water habitats can impact the evolutionary trajectories of frequency-contour traits in anurans, supporting AAH predictions in frogs vocalizing in noisy environments.
FRONTIERS IN ZOOLOGY
(2021)
Article
Behavioral Sciences
Derek A. Coss, Kimberly L. Hunter, Ryan C. Taylor
Summary: Animals communicate acoustically in large groups, creating biotic soundscapes. Variations in these soundscapes can influence communication efficacy, with high noise density affecting female decision-making accuracy during mate choice in the tungara frog.
BEHAVIORAL ECOLOGY
(2021)
Article
Behavioral Sciences
Marco Gonzalez-Santoro, Pablo Palacios-Rodriguez, Mabel Gonzalez, Jack Hernandez-Restrepo, Daniel Mejia-Vargas, Adolfo Amezquita
Summary: Species recognition is crucial for establishing and maintaining species boundaries. However, empirical evidence suggests that the evolution of signaling and recognition systems may be asymmetrical in nature. Additionally, the role of males in recognition systems has been largely overlooked.
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
(2023)
Article
Behavioral Sciences
Guilherme Augusto-Alves, Luis Felipe Toledo
Summary: Anuran communication involves various channels of signal transmission, and the multimodal communication is especially important for species in noisy environments. This study quantified and characterized the multimodal communication of Hylodes phyllodes, a rheophilic frog species, including acoustic and visual signals.
Article
Fisheries
Psique Lais Moreno-de-Lima, Carolina Lambertini, C. Guilherme Becker, Raoni Reboucas, Luis Felipe Toledo
Summary: The invasive North American bullfrog can act as a pathogen carrier and disease superspreader, besides being a voracious predator and competitor. The experiment showed that the presence of bullfrogs reduces encounter rates between native frogs and the waterborne pathogen, possibly due to their predatory behavior and high affinity for aquatic habitats.
DISEASES OF AQUATIC ORGANISMS
(2022)
Article
Mycology
Rebecca J. Webb, Alexandra A. Roberts, Stephen Wylie, Tiffany Kosch, Luis Felipe Toledo, Marcia Merces, Lee F. Skerratt, Lee Berger
Summary: This study investigated the presence of mycoviruses in 38 Batrachochytrium dendrobatidis (Bd) isolates from Australia, Brazil, and South Korea. The results showed that no mycoviruses were detected in any of the isolates, which was unexpected considering the prevalence of mycoviruses in related fungal species. The researchers suggested further testing in regions where Bd originated and in regions with high diversity or low fungal virulence to identify mycoviruses that could help in disease control.
Article
Genetics & Heredity
Anat M. Belasen, Kevin R. Amses, Rebecca A. Clemons, C. Guilherme Becker, L. Felipe Toledo, Timothy Y. James
Summary: Habitat fragmentation negatively affects immunogenetic diversity in amphibians, increasing susceptibility to Bd infection.
Article
Psychology, Biological
Lucas Rodriguez Forti, Maria Rita de Melo Sampaio, Clara Resende Pires, Judit K. Szabo, Luis Felipe Toledo
Summary: This study explores the effect of noise on amphibians' acoustic communication and finds that frogs can adjust their calls to minimize the masking effect of background noise by reducing the frequency bandwidth.
BEHAVIOURAL PROCESSES
(2022)
Article
Multidisciplinary Sciences
Gabriel Jorgewich-Cohen, Luis Felipe Toledo, Taran Grant
Summary: Non-native species are a significant problem in various biomes worldwide. Understanding their population genetics is essential to comprehend their invasion history and dynamics. This study assessed the population structure of the non-native American bullfrog in Brazil, using genetic analysis of samples collected from feral and captive groups. The results indicated that there are two distinct populations of bullfrogs in Brazil, with limited genetic exchange between them. Additionally, there was no genetic differentiation between feral and captive populations, suggesting continuous releases. The findings also highlighted the importance of preventing escapes from farms to control the feral bullfrog population.
SCIENTIFIC REPORTS
(2022)
Article
Biodiversity Conservation
Janaina de Andrade Serrano, Luis Felipe Toledo, Lilian Patricia Sales
Summary: This study investigates the influence of scale on different drivers affecting the occurrence of the chytrid fungus in the Atlantic Forest, Brazil. The Human Footprint Index was found to have a greater impact on the occurrence of the pathogenic species compared to biotic and abiotic factors. However, no differences in the relative influence of predictors were observed at the landscape scale.
PERSPECTIVES IN ECOLOGY AND CONSERVATION
(2022)
Article
Biodiversity Conservation
Matheus de Toledo Moroti, Marcos Rafael Severgnini, Joao Pedro Bolovon, Luis Felipe Toledo, Edelcio Muscat
Summary: We monitored a population of Paratelmatobius mantiqueira for 13 months, gathering new data on external morphology, acoustic repertoire, and behaviors of the species. We found that temperature and humidity influenced the detectability of the species.
JOURNAL OF NATURAL HISTORY
(2022)
Article
Biochemistry & Molecular Biology
Cinnamon S. Mittan-Moreau, Crystal Kelehear, Luis Felipe Toledo, Jamie Bacon, Juan M. Guayasamin, Andrew Snyder, Kelly R. Zamudio
Summary: This study investigated the establishment success of cane toads across their introduced range by examining the roles of introduction history and genetic diversity. The researchers found that Florida populations were more closely related to native Central American lineages, and there were high levels of diversity and population structure in the native range, supporting the idea that cane toads are a species complex. The study also revealed that introduced populations have slightly lower genetic diversity compared to native populations.
Article
Zoology
Natalya de Araujo Pedrosa Lima, Raoni Reboucas, Luis Felipe Toledo, Cybele Sabino Lisboa
Summary: This study evaluated the influence of traffic noise on call parameters of Bokermannohyla hylax. The results showed that traffic noise had an impact on call duration and signal-to-noise ratio, but not on spectral variables. This suggests that traffic noise can potentially affect the long-term survival of the species in noisy environments.
ZOOLOGISCHER ANZEIGER
(2022)
Article
Biodiversity Conservation
Luis Felipe Toledo, Sergio Potsch de Carvalho-e-Silva, Ana Maria Paulino Telles de Carvalho-e-Silva, Joao Luiz Gasparini, Delio Baeta, Raoni Reboucas, Celio F. B. Haddad, C. Guilherme Becker, Tamilie Carvalho
Summary: Amphibian declines are a global problem, and Brazil's Atlantic Forest is a hotspot for these declines. Previous reports underestimated the extent and complexity of historical declines in amphibian populations. Our refined review reveals that the Atlantic Forest has one of the highest rates of amphibian declines and extinctions globally.
BIOLOGICAL CONSERVATION
(2023)
Article
Marine & Freshwater Biology
Joelma S. Prado, Julia R. Ernetti, Mariana Retuci Pontes, L. Felipe Toledo
Summary: This research provides evidence that fog water may serve as a pathway for the transmission of the amphibian-killing fungus Bd. The study shows the passive transport of live Bd zoospores through artificial fog can infect susceptible hosts and lead to lethal chytridiomycosis. These findings are important for understanding the exposure mechanisms of direct-developing amphibians to aquatic pathogens and can aid in the development of control measures.
Article
Biodiversity Conservation
Lucas M. Botelho, Ana Clara F. Barbosa, Joelma S. Prado, Mariana Pedrozo, Matheus de Toledo Moroti, L. Felipe Toledo, Edelcio Muscat
Summary: The genus Dendrophryniscus includes 16 species of frogs endemic to the Atlantic Forest. They have different habitat preferences and reproductive strategies. Additional information such as natural history, larval morphology, and molecular and acoustic data would contribute to better species identification.
JOURNAL OF NATURAL HISTORY
(2023)
Article
Biochemistry & Molecular Biology
Coby A. McDonald, C. Guilherme Becker, Carolina Lambertini, L. Felipe Toledo, Celio F. B. Haddad, Kelly R. Zamudio
Summary: Infectious diseases of wildlife pose a threat to biodiversity globally, but the virulence and host responses to pathogens are not uniform. Batrachochytrium dendrobatidis (Bd), a fungus that causes amphibian decline, consists of a highly virulent lineage (Bd-GPL) and multiple geographically restricted lineages. This study examines the host immune response to Bd-GPL and a geographically restricted lineage (Bd-Brazil) in pumpkin toadlets.
Article
Biodiversity Conservation
Carlos Henrique de-Oliveira-Nogueira, Ubirata Ferreira Souza, Thaynara Mendes Machado, Caio Antonio Figueiredo-de-Andrade, Alexander Tamanini Monico, Ivan Sazima, Marlies Sazima, Luis Felipe Toledo
Summary: Pollination and seed dispersal are crucial for plant survival, with mammals and birds being the main players. Surprisingly, the amphibian species Xenohyla truncata has been observed consuming various plant parts, including fruits, flowers, and nectar, and carrying pollen grains on its back. This unexpected interaction suggests that the treefrog may serve as a potential pollinator, in addition to its known role as a seed disperser. This unique finding highlights unforeseen relationships between amphibians and plants.
