Halliday Conservation Library January
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Identification of Mutant Genes and Introgressed Tiger Salamander
www.nature.com/scientificreports OPEN Identification of Mutant Genes and Introgressed Tiger Salamander DNA in the Laboratory Axolotl, Received: 13 October 2016 Accepted: 19 December 2016 Ambystoma mexicanum Published: xx xx xxxx M. Ryan Woodcock1, Jennifer Vaughn-Wolfe1, Alexandra Elias2, D. Kevin Kump1, Katharina Denise Kendall1,5, Nataliya Timoshevskaya1, Vladimir Timoshevskiy1, Dustin W. Perry3, Jeramiah J. Smith1, Jessica E. Spiewak4, David M. Parichy4,6 & S. Randal Voss1 The molecular genetic toolkit of the Mexican axolotl, a classic model organism, has matured to the point where it is now possible to identify genes for mutant phenotypes. We used a positional cloning– candidate gene approach to identify molecular bases for two historic axolotl pigment phenotypes: white and albino. White (d/d) mutants have defects in pigment cell morphogenesis and differentiation, whereas albino (a/a) mutants lack melanin. We identified in white mutants a transcriptional defect in endothelin 3 (edn3), encoding a peptide factor that promotes pigment cell migration and differentiation in other vertebrates. Transgenic restoration of Edn3 expression rescued the homozygous white mutant phenotype. We mapped the albino locus to tyrosinase (tyr) and identified polymorphisms shared between the albino allele (tyra) and tyr alleles in a Minnesota population of tiger salamanders from which the albino trait was introgressed. tyra has a 142 bp deletion and similar engineered alleles recapitulated the albino phenotype. Finally, we show that historical introgression of tyra significantly altered genomic composition of the laboratory axolotl, yielding a distinct, hybrid strain of ambystomatid salamander. Our results demonstrate the feasibility of identifying genes for traits in the laboratory Mexican axolotl. The Mexican axolotl (Ambystoma mexicanum) is the primary salamander model in biological research. -
Darwin Initiative for the Survival of Species Final Report 1. Darwin
Final Report on The Atelopus Initiative: Conserving Endangered Tropical Andean Amphibians Darwin Initiative for the Survival of Species Final Report 1. Darwin Project Information Project Reference No. 13-017 (formerly 268) Project title The Atelopus Initiative: Conserving Endangered Tropical Andean Amphibians Country Venezuela, Colombia, Ecuador, Perú and Bolivia UK Contractor Conservation International-UK Partner Organisation (s) THE ATELOPUS INITIATIVE is a multi-national partnership of herpetologists from the following institutions: Conservation International, The Natural History Museum, IUCN, NatureServe, and many US, European and Andean institutions. Darwin Grant Value £ 186,695 Start/End date April 1, 2004 – March 31, 2007 Project website www.andescbc.org/atelopus Author(s), date Ariadne Angulo, José Vicente Rodríguez-Mahecha, Patricio Jarrin, Robert Bensted-Smith 2. Project Background/Rationale • Describe the location and circumstances of the project The Atelopus Initiative is a regional project funded by a generous grant by the Darwin Initiative (DI), encompassing the five tropical Andean nations of Venezuela, Colombia, Ecuador, Peru and Bolivia. Following the results of the Global Amphibian Assessment (GAA) and the National Assessment processes developed in Venezuela, Colombia and Peru, which found that almost one third of all known amphibian species are currently considered to be threatened, the project team proposed the Atelopus Initiative as a response to address the amphibian population declines and extinction crisis in the tropical Andes. The crisis is of special concern in the region, given that it is considered to be a biodiversity hotspot and epicentre of amphibian richness especially in he upper Amazon basin. 1 Conservation International Final Report on The Atelopus Initiative: Conserving Endangered Tropical Andean Amphibians • What was the problem that the project aimed to address? The project aimed to address the amphibian population declines and extinction crisis in the tropical Andes Countries. -
An Expert-Based Assessment Model for Evaluating Habitat Suitability of Pond-Breeding Amphibians
sustainability Article An Expert-Based Assessment Model for Evaluating Habitat Suitability of Pond-Breeding Amphibians Shin-Ruoh Juang 1, Szu-Hung Chen 2 and Chen-Fa Wu 1,* 1 Department of Horticulture, National Chung Hsing University, Taichung City 402, Taiwan; [email protected] 2 Department of Ecosystem Science & Management, Texas A&M University, College Station, TX 77843, USA; [email protected] * Correspondence: [email protected]; Tel./Fax: +886-4-2285-9125 Academic Editor: Iain Gordon Received: 8 November 2016; Accepted: 10 February 2017; Published: 16 February 2017 Abstract: Farm ponds are important habitats for amphibians, birds, and other wildlife. In Taiwan, artificial ponds were originally created on farmlands for irrigation purposes and the needs of the domestic water supply. Although pond creation is a typical farming practice, it also provides habitats for pond-breeding amphibians. Thus, it is essential to understand the current status of habitats and their vulnerability regarding urgent conservation needs for target species. Günther’s frog (Hylarana guentheri), a pond-breeding amphibian, has a high sensitivity towards surrounding environmental changes, and can be used as an indicator species to assess habitat suitability. The purpose of this study is to establish a systematic framework to assess the habitat suitability of pond-breeding amphibians by using Günther’s frog as a pilot-study species. First, we collected frog survey data from Chiayi, Taiwan, from winter 2013 to spring 2015, and investigated the present status of the environmental conditions around the ponds. Next, expert questionnaires and the fuzzy Delphi method were applied to establish the hierarchical evaluation criteria regarding the habitat suitability assessment. -
Amphibian Alliance for Zero Extinction Sites in Chiapas and Oaxaca
Amphibian Alliance for Zero Extinction Sites in Chiapas and Oaxaca John F. Lamoreux, Meghan W. McKnight, and Rodolfo Cabrera Hernandez Occasional Paper of the IUCN Species Survival Commission No. 53 Amphibian Alliance for Zero Extinction Sites in Chiapas and Oaxaca John F. Lamoreux, Meghan W. McKnight, and Rodolfo Cabrera Hernandez Occasional Paper of the IUCN Species Survival Commission No. 53 The designation of geographical entities in this book, and the presentation of the material, do not imply the expression of any opinion whatsoever on the part of IUCN concerning the legal status of any country, territory, or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. The views expressed in this publication do not necessarily reflect those of IUCN or other participating organizations. Published by: IUCN, Gland, Switzerland Copyright: © 2015 International Union for Conservation of Nature and Natural Resources Reproduction of this publication for educational or other non-commercial purposes is authorized without prior written permission from the copyright holder provided the source is fully acknowledged. Reproduction of this publication for resale or other commercial purposes is prohibited without prior written permission of the copyright holder. Citation: Lamoreux, J. F., McKnight, M. W., and R. Cabrera Hernandez (2015). Amphibian Alliance for Zero Extinction Sites in Chiapas and Oaxaca. Gland, Switzerland: IUCN. xxiv + 320pp. ISBN: 978-2-8317-1717-3 DOI: 10.2305/IUCN.CH.2015.SSC-OP.53.en Cover photographs: Totontepec landscape; new Plectrohyla species, Ixalotriton niger, Concepción Pápalo, Thorius minutissimus, Craugastor pozo (panels, left to right) Back cover photograph: Collecting in Chamula, Chiapas Photo credits: The cover photographs were taken by the authors under grant agreements with the two main project funders: NGS and CEPF. -
Redalyc.Reproductive Features of Chaltenobatrachus Grandisonae
Revista Chilena de Historia Natural ISSN: 0716-078X [email protected] Sociedad de Biología de Chile Chile CISTERNAS, JAVIERA; CORREA, CLAUDIO; VELÁSQUEZ, NELSON; PENNA, MARIO Reproductive features of Chaltenobatrachus grandisonae (Anura: Batrachylidae) within a protected area in Patagonia, Chile Revista Chilena de Historia Natural, vol. 86, núm. 3, 2013, pp. 365-368 Sociedad de Biología de Chile Santiago, Chile Available in: http://www.redalyc.org/articulo.oa?id=369944186013 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative REPRODUCTION OF CHALTENOBATRACHUS GRANDISONAE 365 REVISTA CHILENA DE HISTORIA NATURAL Revista Chilena de Historia Natural 86: 365-368, 2013 © Sociedad de Biología de Chile NATURAL HISTORY NOTE Reproductive features of Chaltenobatrachus grandisonae (Anura: Batrachylidae) within a protected area in Patagonia, Chile Características reproductivas de Chaltenobatrachus grandisonae (Anura: Batrachylidae) en un área protegida en Patagonia, Chile JAVIERA CISTERNAS1,2,*, CLAUDIO CORREA1,3, NELSON VELÁSQUEZ2 & MARIO PENNA2 1Aumen o el Eco de los montes, Organización No Gubernamental, P. O. Box 393, Coyhaique, Chile 2Universidad de Chile, Facultad de Medicina, Instituto de Ciencias Biomédicas, P. O. Box 70005, Santiago, Chile 3Pontifi cia Universidad Católica de Chile, Departamento de Ecología, Alameda 340, P. O. Box 6513677, Santiago, Chile *Corresponding author: [email protected] Basso et al. (2011) assigned the monotypic Reproductive mode is defined by genus Chaltenobatrachus for the species a combination of characteristics including described originally as Telmatobius grandisonae breeding site, clutch structure, location of Lynch, 1975 (later transferred to the genus egg deposition, larval development site and Atelognathus by Lynch 1978). -
Appendix 1: Maps and Plans Appendix184 Map 1: Conservation Categories for the Nominated Property
Appendix 1: Maps and Plans Appendix184 Map 1: Conservation Categories for the Nominated Property. Los Alerces National Park, Argentina 185 Map 2: Andean-North Patagonian Biosphere Reserve: Context for the Nominated Proprty. Los Alerces National Park, Argentina 186 Map 3: Vegetation of the Valdivian Ecoregion 187 Map 4: Vegetation Communities in Los Alerces National Park 188 Map 5: Strict Nature and Wildlife Reserve 189 Map 6: Usage Zoning, Los Alerces National Park 190 Map 7: Human Settlements and Infrastructure 191 Appendix 2: Species Lists Ap9n192 Appendix 2.1 List of Plant Species Recorded at PNLA 193 Appendix 2.2: List of Animal Species: Mammals 212 Appendix 2.3: List of Animal Species: Birds 214 Appendix 2.4: List of Animal Species: Reptiles 219 Appendix 2.5: List of Animal Species: Amphibians 220 Appendix 2.6: List of Animal Species: Fish 221 Appendix 2.7: List of Animal Species and Threat Status 222 Appendix 3: Law No. 19,292 Append228 Appendix 4: PNLA Management Plan Approval and Contents Appendi242 Appendix 5: Participative Process for Writing the Nomination Form Appendi252 Synthesis 252 Management Plan UpdateWorkshop 253 Annex A: Interview Guide 256 Annex B: Meetings and Interviews Held 257 Annex C: Self-Administered Survey 261 Annex D: ExternalWorkshop Participants 262 Annex E: Promotional Leaflet 264 Annex F: Interview Results Summary 267 Annex G: Survey Results Summary 272 Annex H: Esquel Declaration of Interest 274 Annex I: Trevelin Declaration of Interest 276 Annex J: Chubut Tourism Secretariat Declaration of Interest 278 -
The Origins of Chordate Larvae Donald I Williamson* Marine Biology, University of Liverpool, Liverpool L69 7ZB, United Kingdom
lopmen ve ta e l B Williamson, Cell Dev Biol 2012, 1:1 D io & l l o l g DOI: 10.4172/2168-9296.1000101 e y C Cell & Developmental Biology ISSN: 2168-9296 Research Article Open Access The Origins of Chordate Larvae Donald I Williamson* Marine Biology, University of Liverpool, Liverpool L69 7ZB, United Kingdom Abstract The larval transfer hypothesis states that larvae originated as adults in other taxa and their genomes were transferred by hybridization. It contests the view that larvae and corresponding adults evolved from common ancestors. The present paper reviews the life histories of chordates, and it interprets them in terms of the larval transfer hypothesis. It is the first paper to apply the hypothesis to craniates. I claim that the larvae of tunicates were acquired from adult larvaceans, the larvae of lampreys from adult cephalochordates, the larvae of lungfishes from adult craniate tadpoles, and the larvae of ray-finned fishes from other ray-finned fishes in different families. The occurrence of larvae in some fishes and their absence in others is correlated with reproductive behavior. Adult amphibians evolved from adult fishes, but larval amphibians did not evolve from either adult or larval fishes. I submit that [1] early amphibians had no larvae and that several families of urodeles and one subfamily of anurans have retained direct development, [2] the tadpole larvae of anurans and urodeles were acquired separately from different Mesozoic adult tadpoles, and [3] the post-tadpole larvae of salamanders were acquired from adults of other urodeles. Reptiles, birds and mammals probably evolved from amphibians that never acquired larvae. -
For Review Only
Page 63 of 123 Evolution Moen et al. 1 1 2 3 4 5 Appendix S1: Supplementary data 6 7 Table S1 . Estimates of local species composition at 39 sites in Middle America based on data summarized by Duellman 8 9 10 (2001). Locality numbers correspond to Table 2. References for body size and larval habitat data are found in Table S2. 11 12 Locality and elevation Body Larval Subclade within Middle Species present Hylid clade 13 (country, state, specific location)For Reviewsize Only habitat American clade 14 15 16 1) Mexico, Sonora, Alamos; 597 m Pachymedusa dacnicolor 82.6 pond Phyllomedusinae 17 Smilisca baudinii 76.0 pond Middle American Smilisca clade 18 Smilisca fodiens 62.6 pond Middle American Smilisca clade 19 20 21 2) Mexico, Sinaloa, Mazatlan; 9 m Pachymedusa dacnicolor 82.6 pond Phyllomedusinae 22 Smilisca baudinii 76.0 pond Middle American Smilisca clade 23 Smilisca fodiens 62.6 pond Middle American Smilisca clade 24 Tlalocohyla smithii 26.0 pond Middle American Tlalocohyla 25 Diaglena spatulata 85.9 pond Middle American Smilisca clade 26 27 28 3) Mexico, Durango, El Salto; 2603 Hyla eximia 35.0 pond Middle American Hyla 29 m 30 31 32 4) Mexico, Jalisco, Chamela; 11 m Dendropsophus sartori 26.0 pond Dendropsophus 33 Exerodonta smaragdina 26.0 stream Middle American Plectrohyla clade 34 Pachymedusa dacnicolor 82.6 pond Phyllomedusinae 35 Smilisca baudinii 76.0 pond Middle American Smilisca clade 36 Smilisca fodiens 62.6 pond Middle American Smilisca clade 37 38 Tlalocohyla smithii 26.0 pond Middle American Tlalocohyla 39 Diaglena spatulata 85.9 pond Middle American Smilisca clade 40 Trachycephalus venulosus 101.0 pond Lophiohylini 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Evolution Page 64 of 123 Moen et al. -
Maritime Southeast Asia and Oceania Regional Focus
November 2011 Vol. 99 www.amphibians.orgFrogLogNews from the herpetological community Regional Focus Maritime Southeast Asia and Oceania INSIDE News from the ASG Regional Updates Global Focus Recent Publications General Announcements And More..... Spotted Treefrog Nyctixalus pictus. Photo: Leong Tzi Ming New The 2012 Sabin Members’ Award for Amphibian Conservation is now Bulletin open for nomination Board FrogLog Vol. 99 | November 2011 | 1 Follow the ASG on facebook www.facebook.com/amphibiansdotor2 | FrogLog Vol. 99| November 2011 g $PSKLELDQ$UN FDOHQGDUVDUHQRZDYDLODEOH 7KHWZHOYHVSHFWDFXODUZLQQLQJSKRWRVIURP $PSKLELDQ$UN¶VLQWHUQDWLRQDODPSKLELDQ SKRWRJUDSK\FRPSHWLWLRQKDYHEHHQLQFOXGHGLQ $PSKLELDQ$UN¶VEHDXWLIXOZDOOFDOHQGDU7KH FDOHQGDUVDUHQRZDYDLODEOHIRUVDOHDQGSURFHHGV DPSKLELDQDUN IURPVDOHVZLOOJRWRZDUGVVDYLQJWKUHDWHQHG :DOOFDOHQGDU DPSKLELDQVSHFLHV 3ULFLQJIRUFDOHQGDUVYDULHVGHSHQGLQJRQ WKHQXPEHURIFDOHQGDUVRUGHUHG±WKHPRUH \RXRUGHUWKHPRUH\RXVDYH2UGHUVRI FDOHQGDUVDUHSULFHGDW86HDFKRUGHUV RIEHWZHHQFDOHQGDUVGURSWKHSULFHWR 86HDFKDQGRUGHUVRIDUHSULFHGDW MXVW86HDFK 7KHVHSULFHVGRQRWLQFOXGH VKLSSLQJ $VZHOODVRUGHULQJFDOHQGDUVIRU\RXUVHOIIULHQGV DQGIDPLO\ZK\QRWSXUFKDVHVRPHFDOHQGDUV IRUUHVDOHWKURXJK\RXU UHWDLORXWOHWVRUIRUJLIWV IRUVWDIIVSRQVRUVRUIRU IXQGUDLVLQJHYHQWV" 2UGHU\RXUFDOHQGDUVIURPRXUZHEVLWH ZZZDPSKLELDQDUNRUJFDOHQGDURUGHUIRUP 5HPHPEHU±DVZHOODVKDYLQJDVSHFWDFXODUFDOHQGDU WRNHHSWUDFNRIDOO\RXULPSRUWDQWGDWHV\RX¶OODOVREH GLUHFWO\KHOSLQJWRVDYHDPSKLELDQVDVDOOSUR¿WVZLOOEH XVHGWRVXSSRUWDPSKLELDQFRQVHUYDWLRQSURMHFWV ZZZDPSKLELDQDUNRUJ FrogLog Vol. 99 | November -
Axolotl Care Compiled by Dayna Willems, DVM
Axolotl Care Compiled by Dayna Willems, DVM Brief Description Axolotls (Ambystoma mexicanum) are a Mexican species of aquatic salamander that has rapidly come into the pet trade due to their hardy nature and unusual appearance. Axolotls are amphibians meaning that they do go through several stages of metamorphosis before reaching their adult form. Axolotls are unusual in that their adult/reproductive stage is the same as the juvenile aquatic stage. This is called neoteny and is often considered a “backward” step in evolution. Axolotls are closely related to Tiger Salamanders which do eventually morph into a terrestrial form. It should be noted that under extreme stress, an axolotl may morph into a terrestrial form, but their life is significantly shortened. Being amphibians, axolotls do not tolerate handling well and must stay in the water to breathe. They have sensitive skin and can absorb toxins from the water or your skin. Should you need to transport your axolotl or move it for tank maintenance, do not use a net. Nets can cause abrasions in your axolotl’s sensitive skin or damage the gills. Instead use a plastic cup to scoop your axolotl out of the enclosure. Lifespan Providing the correct care to your axolotl will ensure a long life. Average life expectancy is around 10 years, but reports have been found of axolotls living into their 20’s. Their adult size is around 10 to 12 inches; which they typically reach within the first year of their life. Sexing Axolotls reach sexual maturity when they are around 6-8 inches long. -
Species Assessment for Atlantic Coast Leopard Frog
Species Status Assessment Class: Amphibia Family: Ranidae Scientific Name: Lithobates [Rana] kauffeldi Common Name: Atlantic Coast leopard frog Species synopsis: More than a century of taxonomic confusion regarding the leopard frogs of the East Coast was resolved in 2012 with the publication of a genetic analysis (Newman et al. 2012) confirming that a third, cryptic species of leopard frog (Rana [= Lithobates] sp. nov.) occurs in southern New York, northern New Jersey, and western Connecticut. The molecular evidence strongly supported the distinction of this new species from the previously known northern (R. pipiens [= L. pipiens]) and southern (R. sphenocephala [=L. sphenocephalus]) leopard frogs. Rana kauffeldi is morphologically similar to R. sphenocephala and R. pipiens, but distinguishable by advertisement call, genetics, habitat, geographic distribution, and a combination of morphological characters (Feinberg et al. 2014). Bioacoustic evidence of the frog’s occurrence in southern New Jersey, Maryland, Delaware, and as far south as the Virginia/North Carolina border is available, thereby raising uncertainty about which species of leopard frog occur(s) presently and historically throughout the region. Some evidence suggests that Long Island might at one time have had two species: the southern leopard frog in the pine barrens and the Atlantic Coast leopard frog in coastal wetlands and the Hudson Valley. For simplicity’s sake, in this assessment we retain the name “Atlantic Coast leopard frog” even though much of the information available may also refer to the southern leopard frog or a combination of species (Feinberg et al. 2014). 1 I. Status a. Current and Legal Protected Status i. Federal ____ Not Listed______________________ Candidate? ___No____ ii. -
Cfreptiles & Amphibians
HTTPS://JOURNALS.KU.EDU/REPTILESANDAMPHIBIANSTABLE OF CONTENTS IRCF REPTILES & AMPHIBIANSREPTILES • VOL & AMPHIBIANS15, NO 4 • DEC 2008 • 28(2):189 270–273 • AUG 2021 IRCF REPTILES & AMPHIBIANS CONSERVATION AND NATURAL HISTORY TABLE OF CONTENTS FirstFEATURE ARTICLESRecord of Interspecific Amplexus . Chasing Bullsnakes (Pituophis catenifer sayi) in Wisconsin: betweenOn the Road to Understandinga Himalayan the Ecology and Conservation of the Toad, Midwest’s Giant Serpent Duttaphrynus ...................... Joshua M. Kapfer 190 . The Shared History of Treeboas (Corallus grenadensis) and Humans on Grenada: himalayanusA Hypothetical Excursion ............................................................................................................................ (Bufonidae), and a RobertHimalayan W. Henderson 198 RESEARCH ARTICLES Paa. TheFrog, Texas Horned Lizard Nanorana in Central and Western Texas ....................... vicina Emily Henry, Jason(Dicroglossidae), Brewer, Krista Mougey, and Gad Perry 204 . The Knight Anole (Anolis equestris) in Florida from ............................................. the BrianWestern J. Camposano, Kenneth L. Krysko, Himalaya Kevin M. Enge, Ellen M. Donlan, andof Michael India Granatosky 212 CONSERVATION ALERT . World’s Mammals in Crisis ...............................................................................................................................V. Jithin, Sanul Kumar, and Abhijit Das .............................. 220 . More Than Mammals .....................................................................................................................................................................