Amphibians Research Activities
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Amphibiaweb's Illustrated Amphibians of the Earth
AmphibiaWeb's Illustrated Amphibians of the Earth Created and Illustrated by the 2020-2021 AmphibiaWeb URAP Team: Alice Drozd, Arjun Mehta, Ash Reining, Kira Wiesinger, and Ann T. Chang This introduction to amphibians was written by University of California, Berkeley AmphibiaWeb Undergraduate Research Apprentices for people who love amphibians. Thank you to the many AmphibiaWeb apprentices over the last 21 years for their efforts. Edited by members of the AmphibiaWeb Steering Committee CC BY-NC-SA 2 Dedicated in loving memory of David B. Wake Founding Director of AmphibiaWeb (8 June 1936 - 29 April 2021) Dave Wake was a dedicated amphibian biologist who mentored and educated countless people. With the launch of AmphibiaWeb in 2000, Dave sought to bring the conservation science and basic fact-based biology of all amphibians to a single place where everyone could access the information freely. Until his last day, David remained a tirelessly dedicated scientist and ally of the amphibians of the world. 3 Table of Contents What are Amphibians? Their Characteristics ...................................................................................... 7 Orders of Amphibians.................................................................................... 7 Where are Amphibians? Where are Amphibians? ............................................................................... 9 What are Bioregions? ..................................................................................10 Conservation of Amphibians Why Save Amphibians? ............................................................................. -
Missouri's Toads and Frogs Booklet
TOADSMissouri’s andFROGS by Jeffrey T. Briggler and Tom R. Johnson, Herpetologists www.MissouriConservation.org © 1982, 2008 Missouri Conservation Commission Equal opportunity to participate in and benefit from programs of the Missouri Department of Conservation is available to all individuals without regard to their race, color, national origin, sex, age or disability. Questions should be directed to the Department of Conservation, P.O. Box 180, Jefferson City, MO 65102, (573) 751-4115 (voice) or 800-735-2966 (TTY), or to the U.S. Fish and Wildlife Service Division of Federal Assistance, 4401 N. Fairfax Drive, Mail Stop: MBSP-4020, Arlington, VA 22203. Cover photo: Eastern gray treefrog by Tom R. Johnson issouri toads and frogs are colorful, harmless, vocal and valuable. Our forests, prairies, rivers, swamps and marshes are Mhome to a multitude of toads and frogs, but few people know how many varieties we have, how to tell them apart, or much about their natural history. Studying these animals and sharing their stories with fellow Missourians is one of the most pleasurable and rewarding aspects of our work. Toads and frogs are amphibians—a class Like most of vertebrate animals that also includes amphibians, salamanders and the tropical caecilians, which are long, slender, wormlike and legless. frogs and Missouri has 26 species and subspecies (or toads have geographic races) of toads and frogs. Toads and frogs differ from salamanders by having an aquatic relatively short bodies and lacking tails at adulthood. Being an amphibian means that tadpole stage they live two lives: an aquatic larval or tadpole and a semi- stage and a semi-aquatic or terrestrial adult stage. -
Goliath Frogs Build Nests for Spawning – the Reason for Their Gigantism? Marvin Schäfera, Sedrick Junior Tsekanéb, F
JOURNAL OF NATURAL HISTORY 2019, VOL. 53, NOS. 21–22, 1263–1276 https://doi.org/10.1080/00222933.2019.1642528 Goliath frogs build nests for spawning – the reason for their gigantism? Marvin Schäfera, Sedrick Junior Tsekanéb, F. Arnaud M. Tchassemb, Sanja Drakulića,b,c, Marina Kamenib, Nono L. Gonwouob and Mark-Oliver Rödel a,b,c aMuseum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany; bFaculty of Science, Laboratory of Zoology, University of Yaoundé I, Yaoundé, Cameroon; cFrogs & Friends, Berlin, Germany ABSTRACT ARTICLE HISTORY In contrast to its popularity, astonishingly few facts have become Received 16 April 2019 known about the biology of the Goliath Frog, Conraua goliath.We Accepted 7 July 2019 herein report the so far unknown construction of nests as spawning KEYWORDS sites by this species. On the Mpoula River, Littoral District, West Amphibia; Anura; Cameroon; Cameroon we identified 19 nests along a 400 m section. Nests Conraua goliath; Conrauidae; could be classified into three types. Type 1 constitutes rock pools parental care that were cleared by the frogs from detritus and leaf-litter; type 2 constitutes existing washouts at the riverbanks that were cleared from leaf-litter and/or expanded, and type 3 were depressions dug by the frogs into gravel riverbanks. The cleaning and digging activ- ities of the frogs included removal of small to larger items, ranging from sand and leaves to larger stones. In all nest types eggs and tadpoles of C. goliath were detected. All nest types were used for egg deposition several times, and could comprise up to three distinct cohorts of tadpoles. -
Toadally Frogs Frog Wranglers
Toadally Frogs Frog Wranglers P rogram Theme: • Frogs are toadally awesome! P rogram Messages: • Frogs are remarkable creatures • A frogs ability to adapt to its environment is evident in it physiology • Frogs are extremely sensitive to their surroundings and as a result are considered to be an indicator species P rogram Objectives: • Gallery Participants will observe live frogs face-to-face • Gallery Participants will be able to describe several physical features and unique qualities of the White’s tree frog • Gallery Participants will get excited about frogs Frog Wrangling Procedure 1. Wash and dry your hands. You may use regular tap water and light soap, but insure that you rinse your hands thoroughly. 2. Move frog from the Public Programs suite into carrying case. Whenever you transport your frog from the Public Programs suite to the exhibit, please carefully remove them from the habitat terrarium and place them in the small red carrying case (cooler). This will prevent the animal from becoming stressed as it is moved through the Museum. 3. Prepare your audience. Prior to bring out the live frog, ensure that everyone is seated and that you have asked your audience not to move quickly. Sit on the floor as well; this will ensure that if the frog leaps from your hands, it would not have far to fall. 4. Wet your hands. When you are ready to show the frog as part of your demonstration, please moisten your hands with the spray bottle. This will help minimize your dry skin from sucking the moisture out of the frog. -
3Systematics and Diversity of Extant Amphibians
Systematics and Diversity of 3 Extant Amphibians he three extant lissamphibian lineages (hereafter amples of classic systematics papers. We present widely referred to by the more common term amphibians) used common names of groups in addition to scientifi c Tare descendants of a common ancestor that lived names, noting also that herpetologists colloquially refer during (or soon after) the Late Carboniferous. Since the to most clades by their scientifi c name (e.g., ranids, am- three lineages diverged, each has evolved unique fea- bystomatids, typhlonectids). tures that defi ne the group; however, salamanders, frogs, A total of 7,303 species of amphibians are recognized and caecelians also share many traits that are evidence and new species—primarily tropical frogs and salaman- of their common ancestry. Two of the most defi nitive of ders—continue to be described. Frogs are far more di- these traits are: verse than salamanders and caecelians combined; more than 6,400 (~88%) of extant amphibian species are frogs, 1. Nearly all amphibians have complex life histories. almost 25% of which have been described in the past Most species undergo metamorphosis from an 15 years. Salamanders comprise more than 660 species, aquatic larva to a terrestrial adult, and even spe- and there are 200 species of caecilians. Amphibian diver- cies that lay terrestrial eggs require moist nest sity is not evenly distributed within families. For example, sites to prevent desiccation. Thus, regardless of more than 65% of extant salamanders are in the family the habitat of the adult, all species of amphibians Plethodontidae, and more than 50% of all frogs are in just are fundamentally tied to water. -
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Vol. 45: 331–335, 2021 ENDANGERED SPECIES RESEARCH Published May 27 https://doi.org/10.3354/esr01138 Endang Species Res OPEN ACCESS NOTE First case of male alloparental care in amphibians: tadpole stealing in Darwin’s frogs Osvaldo Cabeza-Alfaro1, Andrés Valenzuela-Sánchez2,3,4, Mario Alvarado-Rybak2,5, José M. Serrano3,6, Claudio Azat2,* 1Zoológico Nacional, Pio Nono 450, Recoleta, Santiago 8420541, Chile 2Sustainability Research Centre & PhD Programme in Conservation Medicine, Faculty of Life Sciences, Universidad Andres Bello, Republica 440, Santiago 8370251, Chile 3ONG Ranita de Darwin, Ruta T-340 s/n, Valdivia 5090000, Chile 4Instituto de Conservación, Biodiversidad y Territorio, Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, Casilla 567, Valdivia 5110027, Chile 5Núcleo de Ciencias Aplicadas en Ciencias Veterinarias y Agronómicas, Universidad de las Américas, Echaurren 140, Santiago 8370065, Chile 6Museo de Zoología ‘Alfonso L. Herrera’, Departamento Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico ABSTRACT: Alloparental care, i.e. care directed at non-descendant offspring, has rarely been described in amphibians. Rhinoderma darwinii is an Endangered and endemic frog of the tem - perate forests of Chile and Argentina. This species has evolved a unique reproductive strategy whereby males brood their tadpoles within their vocal sacs (known as neomelia). Since 2009, the National Zoo of Chile has developed an ex situ conservation programme for R. darwinii, in which during reproduction, adults are kept in terraria in groups of 2 females with 2 males. In September 2018, one pair engaged in amplexus, with one of the males fertilizing the eggs. -
A Method to Distinguish Intensively Farmed from Wild Frogs
Received: 23 March 2016 | Revised: 30 January 2017 | Accepted: 6 February 2017 DOI: 10.1002/ece3.2878 ORIGINAL RESEARCH Stable isotope analyses—A method to distinguish intensively farmed from wild frogs Carolin Dittrich | Ulrich Struck | Mark-Oliver Rödel Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Abstract Germany Consumption of frog legs is increasing worldwide, with potentially dramatic effects for Correspondence ecosystems. More and more functioning frog farms are reported to exist. However, Mark-Oliver Rödel, Museum für Naturkunde, due to the lack of reliable methods to distinguish farmed from wild- caught individuals, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany. the origin of frogs in the international trade is often uncertain. Here, we present a new Email: [email protected] methodological approach to this problem. We investigated the isotopic composition of Funding information legally traded frog legs from suppliers in Vietnam and Indonesia. Muscle and bone tis- 15 13 18 Museum für Naturkunde Berlin; MfN sue samples were examined for δ N, δ C, and δ O stable isotope compositions, to Innovation fund; Leibniz Association′s Open Access Publishing Fund elucidate the conditions under which the frogs grew up. We used DNA barcoding (16S rRNA) to verify species identities. We identified three traded species (Hoplobatrachus rugulosus, Fejervarya cancrivora and Limnonectes macrodon); species identities were 15 18 partly deviating from package labeling. Isotopic values of δ N and δ O showed sig- 15 nificant differences between species and country of origin. Based on low δ N compo- sition and generally little variation in stable isotope values, our results imply that frogs from Vietnam were indeed farmed. -
Standard Guidelines for the Captive Keeping of Anurans
Standard Guidelines for the Captive Keeping of Anurans Developed by the Workgroup Anurans of the Deutsche Gesellschaft für Herpetologie und Terrarienkunde (DGHT) e. V. Informations about the booklet The amphibian table benefi ted from the participation of the following specialists: Dr. Beat Akeret: Zoologist, Ecologist and Scientist in Nature Conserva- tion; President of the DGHT Regional Group Switzerland and the DGHT City Group Zurich Dr. Samuel Furrer: Zoologist; Curator of Amphibians and Reptiles of the Zurich Zoological Gardens (until 2017) Prof. Dr. Stefan Lötters: Zoologist; Docent at the University of Trier for Herpeto- logy, specialising in amphibians; Member of the Board of the DGHT Workgroup Anurans Dr. Peter Janzen: Zoologist, specialising in amphibians; Chairman and Coordinator of the Conservation Breeding Project “Amphibian Ark” Detlef Papenfuß, Ulrich Schmidt, Ralf Schmitt, Stefan Ziesmann, Frank Malz- korn: Members of the Board of the DGHT Workgroup Anurans Dr. Axel Kwet: Zoologist, amphibian specialist; Management and Editorial Board of the DGHT Bianca Opitz: Layout and Typesetting Thomas Ulber: Translation, Herprint International A wide range of other specialists provided important additional information and details that have been Oophaga pumilio incorporated in the amphibian table. Poison Dart Frog page 2 Foreword Dear Reader, keeping anurans in an expertly manner means taking an interest in one of the most fascinating groups of animals that, at the same time, is a symbol of the current threats to global biodiversity and an indicator of progressing climate change. The contribution that private terrarium keeping is able to make to researching the biology of anurans is evident from the countless publications that have been the result of individuals dedicating themselves to this most attractive sector of herpetology. -
1704632114.Full.Pdf
Phylogenomics reveals rapid, simultaneous PNAS PLUS diversification of three major clades of Gondwanan frogs at the Cretaceous–Paleogene boundary Yan-Jie Fenga, David C. Blackburnb, Dan Lianga, David M. Hillisc, David B. Waked,1, David C. Cannatellac,1, and Peng Zhanga,1 aState Key Laboratory of Biocontrol, College of Ecology and Evolution, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China; bDepartment of Natural History, Florida Museum of Natural History, University of Florida, Gainesville, FL 32611; cDepartment of Integrative Biology and Biodiversity Collections, University of Texas, Austin, TX 78712; and dMuseum of Vertebrate Zoology and Department of Integrative Biology, University of California, Berkeley, CA 94720 Contributed by David B. Wake, June 2, 2017 (sent for review March 22, 2017; reviewed by S. Blair Hedges and Jonathan B. Losos) Frogs (Anura) are one of the most diverse groups of vertebrates The poor resolution for many nodes in anuran phylogeny is and comprise nearly 90% of living amphibian species. Their world- likely a result of the small number of molecular markers tra- wide distribution and diverse biology make them well-suited for ditionally used for these analyses. Previous large-scale studies assessing fundamental questions in evolution, ecology, and conser- used 6 genes (∼4,700 nt) (4), 5 genes (∼3,800 nt) (5), 12 genes vation. However, despite their scientific importance, the evolutionary (6) with ∼12,000 nt of GenBank data (but with ∼80% missing history and tempo of frog diversification remain poorly understood. data), and whole mitochondrial genomes (∼11,000 nt) (7). In By using a molecular dataset of unprecedented size, including 88-kb the larger datasets (e.g., ref. -
Amphibian Fact Sheet
IUCN CATEGORIES CASE STUDIES Global Amphibian The IUCN Red List Categories and Criteria is the A Conservation Success Story – Mallorcan Midwife Toad most widely used system to determine a species’ The Mallorcan midwife toad (Alytes muletensis) was discovered in 1977 in risk of extinction. The following terms all have Assessment the remote, narrow limestone gorges on the island of Mallorca, in the Bale- specific meanings and are typically capitalized. aric Islands of Spain. Fossil remains of this species suggest that it was once • Extinct (EX) - No reasonable doubt that the widespread in Mallorca, but declined to Critically Endangered status due to last individual has died. invasive species and habitat loss. In 1985, a captive breeding program was • Critically Endangered (CR) - Facing an ex- WHAT IS THE GLOBAL AMPHIBIAN ASSESSMENT (GAA)? started to slow the decline, and the first reintroductions took place in 1989. tremely high risk of extinction in the wild. In addition, conservation measures were implemented to assist in the recov- • Endangered (EN) - Facing a very high risk of The Global Amphibian Assessment (GAA) represents the first time that ery of the existing wild populations. These efforts have been very successful, extinction in the wild. every known amphibian species has been evaluated in order to assess its as both the range and number of populations of the Mallorcan midwife toad • Vulnerable (VU) - Facing a high risk of ex- risk of extinction and distribution. have significantly increased. While the current, successful recovery program tinction in the wild. will need to be continued, the conservation status of the species has im- For a full listing of categories and criteria, visit More than 500 scientists from over 60 countries contributed to the three- proved so much that it is now considered Vulnerable. -
Phylogenetics, Classification, and Biogeography of the Treefrogs (Amphibia: Anura: Arboranae)
Zootaxa 4104 (1): 001–109 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Monograph ZOOTAXA Copyright © 2016 Magnolia Press ISSN 1175-5334 (online edition) http://doi.org/10.11646/zootaxa.4104.1.1 http://zoobank.org/urn:lsid:zoobank.org:pub:D598E724-C9E4-4BBA-B25D-511300A47B1D ZOOTAXA 4104 Phylogenetics, classification, and biogeography of the treefrogs (Amphibia: Anura: Arboranae) WILLIAM E. DUELLMAN1,3, ANGELA B. MARION2 & S. BLAIR HEDGES2 1Biodiversity Institute, University of Kansas, 1345 Jayhawk Blvd., Lawrence, Kansas 66045-7593, USA 2Center for Biodiversity, Temple University, 1925 N 12th Street, Philadelphia, Pennsylvania 19122-1601, USA 3Corresponding author. E-mail: [email protected] Magnolia Press Auckland, New Zealand Accepted by M. Vences: 27 Oct. 2015; published: 19 Apr. 2016 WILLIAM E. DUELLMAN, ANGELA B. MARION & S. BLAIR HEDGES Phylogenetics, Classification, and Biogeography of the Treefrogs (Amphibia: Anura: Arboranae) (Zootaxa 4104) 109 pp.; 30 cm. 19 April 2016 ISBN 978-1-77557-937-3 (paperback) ISBN 978-1-77557-938-0 (Online edition) FIRST PUBLISHED IN 2016 BY Magnolia Press P.O. Box 41-383 Auckland 1346 New Zealand e-mail: [email protected] http://www.mapress.com/j/zt © 2016 Magnolia Press All rights reserved. No part of this publication may be reproduced, stored, transmitted or disseminated, in any form, or by any means, without prior written permission from the publisher, to whom all requests to reproduce copyright material should be directed in writing. This authorization does not extend to any other kind of copying, by any means, in any form, and for any purpose other than private research use. -
Biogeography of the Nearly Cosmopolitan True Toads (Anura: Bufonidae) Jennifer B
Global Ecology and Biogeography, (Global Ecol. Biogeogr.) (2007) Blackwell Publishing Ltd RESEARCH Around the world in 10 million years: PAPER biogeography of the nearly cosmopolitan true toads (Anura: Bufonidae) Jennifer B. Pramuk1*, Tasia Robertson2, Jack W. Sites Jr2 and Brice P. Noonan3 1Department of Herpetology, Bronx Zoo/ ABSTRACT Wildlife Conservation Society, 2300 Southern Aim The species-rich family of true toads (Anura: Bufonidae) has been the focus of Boulevard, Bronx, NY 10460, USA, 2Brigham Young University, Department of several earlier studies investigating the biogeography of geographically widespread Integrative Biology, Provo, UT 84602, USA, taxa. Herein, we employ newly developed Bayesian divergence estimate methods to 3Duke University, Department of Biology, investigate the biogeographical history of this group. Resulting age estimates are Durham, NC 27708, USA used to test several key temporal hypotheses including that the origin of the bufonid clade pre-dates Gondwanan vicariance (~105 million years ago, Ma). Area cladograms are also invoked to investigate the geographical origin of the family. Location Worldwide, except the Australia–New Guinea plate, Madagascar and the Antarctic. Methods A phylogenetic hypothesis of the relationships among true toads was derived from analysis of 2521 bp of DNA data including fragments from three mitochondrial (12S, tRNAval, 16S) and two nuclear (RAG-1, CXCR-4) genes. Analysis of multiple, unlinked loci with a Bayesian method for estimating divergence times allowed us to address the timing and biogeographical history of Bufonidae. Resulting divergence estimates permitted the investigation of alternative vicariance/dispersal scenarios that have been proposed for true toads. Results Our area cladogram resulting from phylogenetic analysis of DNA data supports a South American origin for Bufonidae.