Studies on Neotropical Fauna and Environment最新文献

{"title":"Bat flies (Diptera: Streblidae) of Phyllostominae and Stenodermatinae (Chiroptera: Phyllostomidae) bats from cocoa and natural areas of Amazonia","authors":"Júlia de Oliveira França, Rafaela Jemely Rodrigues Alexandre, Letícia Lima Correia, Loyriane Moura Souza, Gustavo Graciolli, Ludmilla Moura de Souza Aguiar, Thiago Bernardi Vieira","doi":"10.1080/01650521.2023.2266190","DOIUrl":"https://doi.org/10.1080/01650521.2023.2266190","url":null,"abstract":"ABSTRACTStreblidae and Nycteribiidae are ectoparasitic flies exclusive to bats, with an estimated diversity of over 100 species in Brazil. Its distribution and abundance may be influenced by host’s shelter, geographic distribution, behavior, and size. Bat species respond differently to environmental changes, such as changing land use and land cover for cocoa production in the eastern Amazon. We sought to investigate the community of ectoparasite flies (Diptera: Streblidae) on Phyllostominae and Stenodermatinae (Chiroptera: Phyllostomidae) bats and the parasite-host interactions in cacao plantations and natural areas in the Brazilian Amazon. Twenty-two bats were collected, reaching a total of 54 flies. The observed richness was 15 (estimated in 24) species, with Trichobius dugesioides being the most abundant. The cacao plantations showed greater richness, eight species more than the natural ones, however, showing the absence of a specific distribution pattern for each area. This result may be because human interference in cocoa areas are barely perceptible, at least for the bats studied. In addition, the adoption of cabruca-type cocoa plantations can influence the result, as previously shown in the literature.KEYWORDS: Biodiversityparasite-host networkinteractioninventoryAmazon AcknowledgmentsThis study benefited from resources provided from the environmental compensation funds deposited by Vale S.A., and administered by the National Research Center for Cave Conservation (Cecav/ICMBio) and Brazilian Society for the Study of Chiroptera – SBEQ, as part of the DD program – The Least Know Species of Brazil, and resources from the Speleological Compensation Agreement – TCCE VALE 1/2018, Edital Ferruginosas 01/2021, administered by the Brazilian Institute for Sustainable Development – IABS, and the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001, concede to RJRA.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe work was supported by the Coordenação de Aperfeiçoa-mento de Pessoal de Nível Superior [001]; cecavICMBio .","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":"21 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135037961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the acoustic diversity of Andean frogs in the Farallones de Cali National Natural Park, southwestern Colombia","authors":"Oscar Mauricio Cuellar-Valencia, Brayan Esteban Bolaños-Molina, Wilmar Bolívar-García","doi":"10.1080/01650521.2023.2266187","DOIUrl":"https://doi.org/10.1080/01650521.2023.2266187","url":null,"abstract":"ABSTRACTThe advertisement calls that frogs emit in a reproductive context are among the most conspicuous and studied acoustic signals. They play a significant role in interspecific recognition, mate selection, and territoriality and can be used in different fields such as taxonomy, ethology, ecology, and evolutionary studies. In Colombia, around 40% of the recognized frog species have descriptions of their calls in the literature. However, the Cordillera Occidental in the tropical Andes and the Strabomantidae family are underrepresented in the literature despite the huge species diversity they hold. Here, we described the advertisement calls of eleven frog species belonging to three families from three localities at high elevations in the Cordillera Occidental, which have been inaccessible to scientific research due to security concerns. We describe the advertisement calls of five Pristimantis species for the first time and estimated the daily acoustic activity patterns of four Pristimantis species. Our findings enhance the number of known advertisement calls for anuran species from one of the least-represented regions and families in the country. In addition, they provide important information regarding the natural history of four Pristimantis species that could be used as a baseline for future long-term population studies.KEYWORDS: Acoustic detectionadvertisement callsCordillera Occidentalreproductionvocal repertoire AcknowledgmentsWe gratefully acknowledge the invaluable assistance during the fieldwork of J.D. Valencia Velasco, J. Buitrago, J.P. Lopez and the staff of Farallones de Cali NNP–especially G.A. Rodríguez Salazar. Special thanks to E. Barona Cortes for loaning us essential equipment for fieldwork and providing valuable advice about data analysis, and to J. Mendez-Narvaez for the valuable comments on the first version of the manuscript. For loan specimens and assistance with work in the museum, we are grateful to J.D. Lynch, Universidad Nacional de Colombia, Instituto de Ciencias Naturales (ICN), and JJ Ospina Sarria for providing high resolution images of P. buckleyi housed in KU. We are also grateful to Dr. Mirco Solé, editor-in-chief of Studies on Neotropical Fauna and Environment, and the anonymous reviewers for their comments and suggestions that improved our manuscript. Finally, we dedicated this work to the memory of Gustavo Kattan, who believed in and led the project ‘Una isla en las nubes: establecimiento de línea base para monitoreo de un páramo aislado frente a cambio climático.’This research was conducted under the authorization of the National Authority of Environmental Licences and the Ministry of Environment and Sustainable Development of Colombia (Resolución 1070 del 28 de agosto de 2015), and the National Natural Parks of Colombia (Resolución 0351 del 05 de octubre de 2012).Disclosure statementNo potential conflict of interest was reported by the author(s).Supplementary materialSupplemental data for this article can ","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":" 17","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135290919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Floral preferences of carpenter bees (Apidae: Xylocopini: <i>Xylocopa</i> ) from Maranhão, Northeast Brazil","authors":"Luciano André Chaves Ferreira, Tereza Cristina Giannini, Fernando César Vieira Zanella, Patrícia Maia Correia de Albuquerque","doi":"10.1080/01650521.2023.2265630","DOIUrl":"https://doi.org/10.1080/01650521.2023.2265630","url":null,"abstract":"ABSTRACTThe current study aimed to recognize the floral resources used by bees of the genus Xylocopa in transition physiognomies. We compiled the information available from biological collections and analyzed metrics of dystrophic interaction. We listed 2547 records of Xylocopa in flowers, across twelve identified bee species. The bees were collected from 109 plant species, belonging to 77 genera and 36 families. An interaction network was constructed based on 193 interactions. In which there was a significant correlation between the abundance of bees collected and the richness of plants visited. The most generalist bees were X. cearensis and X. frontalis, and the plants with the most records were Chamaecrista hispidula and C. ramosa. Significant seasonality was observed in the total number of individuals. On the other hand, there was a weak similarity among Xylocopa species according to plant species, despite the clear relationship of the bees according to physiognomies. The interaction network proved to be highly nested, indicating a functional partitioning that allows several species to occur in the same environment. The contribution made by the current work for its regional scope stands out, dealing with areas that have distinct characteristics.KEYWORDS: Solitary beespollinationplant-pollinatorinteraction networkecotone AcknowledgmentsThe authors gratefully acknowledge Márcia Maria Correa Rêgo for support in acquiring the historical data on the surveys conducted in Maranhão; CAPES for the scholarship granted to LACF; and the Federal University of Maranhão for the infrastructure and technical support.Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work was financed by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brazil (CAPES) - Código de Financiamento 001 and Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão (FAPEMA).","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":" 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135290790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Historical account and current knowledge of the southernmost Chiropterofauna in the world: the Magellanic/Fuegian bats","authors":"Fabian M. Jaksic, David R. Martínez","doi":"10.1080/01650521.2023.2274146","DOIUrl":"https://doi.org/10.1080/01650521.2023.2274146","url":null,"abstract":"A depauperate Chiropterofauna consisting of essentially three bat species (the year-round residents Histiotus magellanicus and Myotis chiloensis, and the apparently migratory Lasiurus varius), exists in the challenging cold and windy environment of the Magellanic/Fuegian region, which encompasses territories in Argentina and Chile, both continental and insular. Knowledge of that bat fauna benefitted from earlier explorers and naturalists visiting such southerly and isolated geographical confines, but still lacks a comprehensive scientific study, particularly in face of expected green-energy projects using aerogenerators known to cause bat fatalities elsewhere. Currently, there is a paucity of information on the fine-scale geographic distribution, local abundance, and migration patterns of those bats that needs to be remedied as soon as possible. Our review may aid orienting and focusing such a research program, which should hopefully be binational, on account of the artificial nature of the border between Argentina and Chile in Tierra del Fuego.","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":" 46","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135292229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coat color in <i>Thylamys karimii</i> (Petter, 1968) (Didelphimorphia, Didelphidae) in northeastern Brazil: intraspecific variation and geographic distribution","authors":"Milena Cavalcanti, Diego Astúa","doi":"10.1080/01650521.2023.2276211","DOIUrl":"https://doi.org/10.1080/01650521.2023.2276211","url":null,"abstract":"ABSTRACTKnowledge of Didelphidae taxonomy and diversity has increased steadily over the last decades, mainly due to increasing collection efforts and revisionary works. Yet, especially for mouse opossums, a proper appraisal of morphological variation is still incipient. Thylamys karimii occurs in the Brazilian biomes of Caatinga and Cerrado, and specimens with two different shades of dorsal coloration (brown and gray) were recently documented in sympatry in the Parque Nacional (PARNA) do Catimbau (Caatinga biome). We used qualitative and morphometric data from skulls and skins (n = 7 from PARNA Catimbau and n = 26 from other localities) to compare these two coat color morphotypes and characterize the morphological diversity and taxonomic status of the Caatinga populations. We used Student’s t-tests to compare sexes and morphotypes’ measurements. We found at least three well-defined coat color morphotypes distinguishable by dorsal and ventral coloration and not restricted to PARNA Catimbau. Variation of the other morphological traits suggests that these morphotypes are more likely a case of intraspecific variation in the Brazilian northeastern region. Morphometric differences, particularly between coat color morphotypes, might be better elucidated in larger samples. Additionally, these specimens represent an important extension of the species’ known distribution reaching the Atlantic Forest borders.KEYWORDS: Opossumsmorphotypescolorationpelage colorCaatinga AcknowledgmentsWe are thankful to Pedro Cordeiro-Estrela (UFPB, João Pessoa, Brazil), and the support staff of the Mammal Collections we visited for their support and infrastructure during the analysis of the vouchers. Ana Paula Carmignotto (UFSCar, Sorocaba, Brazil) and Marcos Brandão (USP, São Paulo, Brazil) made important comments and suggestions when this manuscript was still an undergraduate thesis, and comments from two anonymous reviewers helped us in improving the final text. We also thank the Muséum national d’Histoire naturelle (Paris) for the photo of the holotype.Disclosure statementNo potential conflict of interest was reported by the authors.Supplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/01650521.2023.2276211Additional informationFundingThis research was supported by grants from CNPq, CAPES, and FACEPE to DA and the UFPE Mammal Collection. MC was supported by a UFPE-CNPq (Iniciação Cientifica) fellowship and a grant from SBMz during the development of this work and is currently supported by a FACEPE MSc. Fellowship (IBPG-0154-2.04/22).","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":"159 1‐4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135393036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Which plant traits matter? <i>Bromelia antiacantha</i> Bertol. (Bromeliaceae) as a hibernation site for <i>Brachystethus geniculatus</i> (Fabricius) (Hemiptera, Pentatomidae, Edessinae)","authors":"Luís R. Schmitz, Aline Barcellos, Cristina V. Cademartori","doi":"10.1080/01650521.2023.2266174","DOIUrl":"https://doi.org/10.1080/01650521.2023.2266174","url":null,"abstract":"ABSTRACTDiapause is a process of decreased metabolic activity in insects. In latitudes with a well-defined cold season, diapause or hibernation is a strategy to survive in periods of resource scarcity. In Pentatomidae, this phenomenon is studied mainly in non-natural environments and with species of economic importance. This work aimed to determine which variables influence the abundance of Brachystethus geniculatus on its hibernation site, Bromelia antiacantha. Samplings were carried out monthly, from July to September of 2019, in a remnant of Atlantic Forest in southern Brazil. The height, diameter, cup height, leaf width, and abundance of bromeliads per plant cluster were evaluated for their correlation with the abundance of B. geniculatus in bromeliads. We collected 24 individuals for analysis of fat bodies, in order to check diapause. We found 70 individuals of B. geniculatus distributed in 33 of the 61 bromeliads examined. The number of B. geniculatus per bromeliad was positively correlated with the cup height, that influences the opening of the leaves and consequently decreases the exposure to environmental weathering, and the number of bromeliads per group, possibly because more leaves and spines around the cup may help avoid predation. Parasitism on B. geniculatus by tachinid flies was recorded in the field.KEYWORDS: Atlantic Forestcorrelationstink bugmicro-habitatparasitism AcknowledgmentsWe thank all the friends and colleagues who help in the field search and the manuscript revision, especially Dr. Filipe Michels Bianchi (UFRGS), Dr. Luiza Rodrigues Redaelli (UFRGS) and Dr. Patrick Colombo (SEMA), for their valuable contributions to the final version of the manuscript.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis study was partially financed by CNPq fellowship to the first author [grant 122920/2016-3].","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":"17 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135684520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Food habits of <i>Hylaeamys seuanezi</i> (Weksler, Geise &amp; Cerqueira, 1999) (Rodentia: Cricetidae) in forest formations: a comparison of methods and habitats","authors":"Maycon F. C. dos Santos, Martín R. Alvarez, Camila R. Cassano","doi":"10.1080/01650521.2023.2265642","DOIUrl":"https://doi.org/10.1080/01650521.2023.2265642","url":null,"abstract":"ABSTRACTFood habits are traces of a species’ natural history that help us to understand how the organisms interact with the environment. Hylaeamys seuanezi is a forest-specialist rodent also recorded in diverse shaded cocoa agroforestry systems. Here we describe and classify its diet, comparing the results acquired from stomach and fecal contents, collected in forest and cocoa agroforest sites. We analyzed 203 samples from 126 individuals: 51 captured in agroforest and 75 in forest. We measured the relative contribution of vegetable and animal matter and the relative frequency of 17 food items. Our results indicate that H. seuanezi consumes a greater proportion of vegetable than animal matter, but should be considered omnivore, given the frequent consumption of arthropods. The richness and composition of items was similar between stomach and fecal samples. The richness of items also did not vary between the environments, but the composition of the items did. Intact seeds were more frequent in samples from forests and unidentified arthropods and Hymenoptera in samples from agroforest. Despite variation among consumed items, the diverse shaded cocoa agroforestry systems provide a diversity of resources, which likely favor the maintenance of H. seuanezi in these plantations and in the study region.KEYWORDS: Atlantic Forestdietsmall mammalfeeding ecology AcknowledgmentsWe thank the Laboratório de Ecologia Aplicada à Conservação and Laboratório de Zoologia de Vertebrados for logistical support, and Caipora’s and Rhip’s fraternities, specitally to Adna Alves, Elson Rios, Gean Zanetti and Rebeca Sampaio, for field and data collection assistance. We are also grateful to Santiago Alvarez Martinez for the English translation and to former reviewers for enhancing the previous versions of the manuscript.Data availability statementData set is available from Mendeley repository (doi:10.17632/wn5282×z6v.1).Supplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/01650521.2023.2265642.Additional informationFundingThis work was supported by INCT IN-TREE [CNPq-465767/2014-1, CAPES-23038.000776/2017-54], CNPq-PPBio Rede BioMA [457524/2012-0], SISBIOTA [563216/2010-7], FAPESB-PPP [0008/2011] and UESC [073.6764.2020.0003917-18; 00220.1100.1264; 00220.1100.1645 and 00220.1100.1536]. We thank CAPES and UESC - ICB for MFCS masters’ and undergrad scholarships, respectively.","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":"26 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135974531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biogeographic patterns of the freshwater fishes from the state of Espírito Santo, eastern Brazil","authors":"Felipe Vieira-Guimarães, Luisa Maria Sarmento-Soares, Danieli Marinho Nobre, Débora Cantarin Neiva, Juliana Paulo da Silva, Ronaldo Fernando Martins-Pinheiro","doi":"10.1080/01650521.2023.2258798","DOIUrl":"https://doi.org/10.1080/01650521.2023.2258798","url":null,"abstract":"","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135322173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Population dynamics of Morelet’s crocodile ( <i>Crocodylus moreletii</i> ) using data of national monitoring in Mexico","authors":"Alejandro Villegas, José Juan Flores-Martínez, Sol de Mayo Mejenes-López, Kathleen Ann Babb-Stanley","doi":"10.1080/01650521.2023.2266191","DOIUrl":"https://doi.org/10.1080/01650521.2023.2266191","url":null,"abstract":"","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":"EM-10 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135322525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trophic ecology of juvenile amphibians: relative level of myrmecophagy in two anuran species","authors":"Lucía Moreira-Demarco, Paloma Alvarez-Blanco, Juan Pablo Llopart, Elena Angulo, Raúl Maneyro","doi":"10.1080/01650521.2023.2261164","DOIUrl":"https://doi.org/10.1080/01650521.2023.2261164","url":null,"abstract":"ABSTRACTResearch on trophic niche dimensions is essential to understanding the role of species in ecosystems. In the case of amphibian conservation, it is particularly important to study juveniles, given the vulnerability of this life stage. Here, the diets consumed by juvenile Rhinella arenarum and Odontophrynus sp. were evaluated, with special attention paid to the incidence of ants. Diet composition was quantified by analyzing the amphibians’ stomach contents. The representation of different taxonomic prey groups was determined, and the relationships between the amphibians’ morphological traits and the characteristics of their prey were explored. Diet composition and diversity differed between juveniles of the two species. Juvenile R. arenarum occupied an intermediate position along the specialist-generalist spectrum. Their most commonly consumed prey were ants (mainly Solenopsis and Linepithema) followed by mites. Juvenile Odontophrynus sp. had a more generalist diet. Their most commonly consumed prey were Isopoda followed by Coleoptera and miscellaneous larvae. Snout-vent length (SVL) was greater for juvenile Odontophrynus sp. than for juvenile R. arenarum, but the latter consumed more prey. The results suggest that juveniles of R. arenarum tend to specialize more on ants than do juveniles of Odontophrynus sp.KEYWORDS: Anurajuvenile amphibiansFormicidaetrophic ecologyRhinellaOdontophrynus AcknowledgmentsWe thank Francisco Sola and Martín Bolazzi for identifying some ant genera and species. We are grateful to the team at the Laboratory of Systematics and Natural History of Vertebrates -Herpetology (Faculty of Sciences, UdelaR, Uruguay) for their contributions over the entire course of our work. We thank Jessica Pearce, the professional science editor, for the English editing service. We appreciate the valuable feedback provided by the editors and three anonymous reviewers.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementThe data obtained in this study are provided in the Supplementary Materials (Appendices 1–2).Additional informationFundingThis research was made possible by financial support from the Spanish Ministry of Economy and Competitiveness [BES-2013-064713, EEBB-I-17-12165], and PEDECIBA Biología. Partial support was provided by Uruguay’s National Agency for Research and Innovation (ANII) and the regional government of Andalucía (Department of Education, Research, and Innovation, PROYEXCEL_00688 within PAIDI 2020).","PeriodicalId":49465,"journal":{"name":"Studies on Neotropical Fauna and Environment","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135823809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}