Un Nuevo Mannophryne (Anura: Dendrobatidae) Del Estado Falcón, Con Comentarios Sobre La Conservación Del Género En El Noroeste De Venezuela

Total Page:16

File Type:pdf, Size:1020Kb

Un Nuevo Mannophryne (Anura: Dendrobatidae) Del Estado Falcón, Con Comentarios Sobre La Conservación Del Género En El Noroeste De Venezuela Un Nuevo Mannophryne (Anura: Dendrobatidae) del Estado Falcón, Con Comentarios sobre la Conservación del Género en el Noroeste de Venezuela ABRAHAM MIJARES-URRUTIA Y ALEXIS ARENDS R. ¿Qué es un Mannophryne? Mannophryne es un género de anfibios anuros neotropicales de la familia Dendrobatidae. El género se distribuye por Venezuela y trinidad y Tobago. Clasificación científica Reino: Animalia Filo: Chordata Clase: Amphibia Orden: Anura Familia: Dendrobatidae Género: Mannophryne Especie: Mannophryne caquetio Mannophryne caquetio Distribución Es una especie endémica de Venezuela, conocida solamente de la localidad tipo, denominada Mapararí, a una altitud de alrededor de 800 m, un área muy intervenida antrópicamente en la vertiente sur de la sierra de Churuguara, Municipio Federación, en el estado Falcón. Se tiene el reporte de una población adicional que fue encontrada en mayo de 2002, en el Parque Nacional Cueva de la Quebrada del Toro La Marca (1992) Con base en una serie de rasgos, entre los cuales destacan un collar oscuro, garganta amarilla y un comportamiento complejo (exhibición de la garganta y saltos sobre la punta de los dedos) identifica la especie de anfibio. Pero esta es confundida con otras Un Nuevo Mannophryne especies de (M. collaris, M. herminae, M. (Anura: Dendrobatidae) del neblina, M. oblitterata, M. olmonae, M. riveroi, M. trinitatis y M. yustizi) luego la Estado Falcón, con idea se denota incierta y en base de esta Comentarios sobre la investigación descubren un nuevo Conservación del Género en Mannophryne del sistema montañoso de el Noroeste de Venezuela Churuguara, al surde Falcón. TERMINOLOGÍA MORFOMETRÍA EL SISTEMA DE ANOTACIÓN DE LA FÓRMULA DE PALMEADURA Y PEDAL Las medidas que se tomaron exclusivamente en ejemplares adultos bajo una lupa de disección El criterio para la determinación del sexo y la condición adulta fue la presencia de hendiduras vocales abiertas, coloración ventral oscura y testículos agrandados para los machos, y oviductos circunvolucionados o con huevos para las hembras Mannophryne de tamaño pequeño máxima registrada en machos 23.4 mm, en las hembras 26.3 mm (1) De aspecto y textura áspera (en algunos es Lisa o parcialmente lisa), (2) Tímpano aproximadamente 1/3 del día metrohorizontal del ojo (3) Punta del hocico redondeada en vista dorsal y lateral (4) Canto rostral redondeado (5) Primer dedo manual ligeramente más largo o casi igual que el segundo dedo manual (6) Disco terminal del tercer dedo manual cerca de 2.2 veces más ancho que la falange adyacente (7) Dedos manuales sin palmeadura (8) Pliegue cloacal muy corto y con bordes lisos (9) Pliegue tarsal interno pronunciado (10) Collar castaño oscuro presente, ancho, con diminutos puntos pálidos 1 2 3 Mannophryne caquetio se distingue por tener un collar ancho, con diminuto punteado pálido (collar muy estrecho y sin punteado pálido 4 Mannophryne larandina 5 Mannophryne olmonae Mannophryne trinitatis Se distingue por la Mannophryne collaris Me separa por tener el menor extensión de la punteado diminuto en el palmeadura pedal entre Mannophryne yustizi collar y un vientre el tercer, cuarto y blanco cremoso en vida quinto dedos pedales Etimología.— El epíteto indígena “caquetio” es el nombre de las tribus de indios que dominaban la mayor parte de las tierras de Falcón antes de la conquista, hoy ya extintos. La especie se encuentra en un habitat clasificado como “Bosque tropo filo basimontano decıduo” Mannophryne caquetio se ha encontrado a una altitud de alrededor de 800 m en la vertiente sur de la Sierra de Churuguara, estado Falcón, habitando un área muy intervenida entrópicamente con indicios de estar reduciéndose, consideramos recomendable una explıcita y amplia protección legal según lo establecido en el Parágrafo 4, Artıculo 77, Capıtulo VI, Tıtulo III, de la Ley de Protección a la Fauna Silvestre de la Republica de Venezuela (Anónimo, 1970) e iniciar un intenso monitoreo poblacional para las especies del genero (en particular para aquellas en las que ya se han registrado problemas). Protección para el sapito acollarado de Churuguara.
Recommended publications
  • Stream Frogs, Mannophryne Trinitatis (Dendrobatidae): an Example of Anti-Predator Behaviour
    HERPETOLOGICAL JOURNAL, Vol. 11, pp. 91-100 (2001) SELECTION OF TAD POLE DEPOSITION SITES BY MALE TRINIDADIAN STREAM FROGS, MANNOPHRYNE TRINITATIS (DENDROBATIDAE): AN EXAMPLE OF ANTI-PREDATOR BEHAVIOUR J. R. DOWNIE, S. R. LIVINGSTONE AND J. R. CORMACK Division of Environmental and Evolutionary Biology, Institute of Biomedical & Life Sciences, University of Glasgow, Scotland, UK Trinidad's only dendrobatid frog, Mannophryne (=Colostethus) trinitatis, lives by the small streams draining the slopes of the Northern Range mountains and at Tamana Hill in the Central Range. Adults are often very abundant, but tadpoles are found patchily in the streams. In the absence of two potential predators - the fish Rivulus hartii and shrimps of the genus Macrobrachium - tadpoles are abundant in pools. Where the predators are present, tadpoles are uncommon or absent. Tadpoles may also be found in small, isolated bodies of water at some distance from streams. Males carrying tadpoles retained them for 3-4 days, in the absence of suitable pools. When presented with a choice of pools, males preferred to deposit their tadpoles in pools lacking predators. There were differences in behaviour between males fromthe northern and southern slopes of the Northern Range. For example, north coast males deposited tadpoles in pools containing other conspecific tadpoles in preference to empty pools, whereas males from southern slopes made the opposite choice. When presented only with pools containing predators (i.e. shrimps or fish), north coast males shed their tadpoles in damp leaf litter rather than in the pools, while males from the southern slopes deposited tadpoles in pools with shrimps - predators uncommon in the southern slopes streams.
    [Show full text]
  • Catalogue of the Amphibians of Venezuela: Illustrated and Annotated Species List, Distribution, and Conservation 1,2César L
    Mannophryne vulcano, Male carrying tadpoles. El Ávila (Parque Nacional Guairarepano), Distrito Federal. Photo: Jose Vieira. We want to dedicate this work to some outstanding individuals who encouraged us, directly or indirectly, and are no longer with us. They were colleagues and close friends, and their friendship will remain for years to come. César Molina Rodríguez (1960–2015) Erik Arrieta Márquez (1978–2008) Jose Ayarzagüena Sanz (1952–2011) Saúl Gutiérrez Eljuri (1960–2012) Juan Rivero (1923–2014) Luis Scott (1948–2011) Marco Natera Mumaw (1972–2010) Official journal website: Amphibian & Reptile Conservation amphibian-reptile-conservation.org 13(1) [Special Section]: 1–198 (e180). Catalogue of the amphibians of Venezuela: Illustrated and annotated species list, distribution, and conservation 1,2César L. Barrio-Amorós, 3,4Fernando J. M. Rojas-Runjaic, and 5J. Celsa Señaris 1Fundación AndígenA, Apartado Postal 210, Mérida, VENEZUELA 2Current address: Doc Frog Expeditions, Uvita de Osa, COSTA RICA 3Fundación La Salle de Ciencias Naturales, Museo de Historia Natural La Salle, Apartado Postal 1930, Caracas 1010-A, VENEZUELA 4Current address: Pontifícia Universidade Católica do Río Grande do Sul (PUCRS), Laboratório de Sistemática de Vertebrados, Av. Ipiranga 6681, Porto Alegre, RS 90619–900, BRAZIL 5Instituto Venezolano de Investigaciones Científicas, Altos de Pipe, apartado 20632, Caracas 1020, VENEZUELA Abstract.—Presented is an annotated checklist of the amphibians of Venezuela, current as of December 2018. The last comprehensive list (Barrio-Amorós 2009c) included a total of 333 species, while the current catalogue lists 387 species (370 anurans, 10 caecilians, and seven salamanders), including 28 species not yet described or properly identified. Fifty species and four genera are added to the previous list, 25 species are deleted, and 47 experienced nomenclatural changes.
    [Show full text]
  • Mannophryne Olmonae) Catherine G
    The College of Wooster Libraries Open Works Senior Independent Study Theses 2014 A Not-So-Silent Spring: The mpI acts of Traffic Noise on Call Features of The loB ody Bay Poison Frog (Mannophryne olmonae) Catherine G. Clemmens The College of Wooster, [email protected] Follow this and additional works at: https://openworks.wooster.edu/independentstudy Part of the Other Environmental Sciences Commons Recommended Citation Clemmens, Catherine G., "A Not-So-Silent Spring: The mpI acts of Traffico N ise on Call Features of The loodyB Bay Poison Frog (Mannophryne olmonae)" (2014). Senior Independent Study Theses. Paper 5783. https://openworks.wooster.edu/independentstudy/5783 This Senior Independent Study Thesis Exemplar is brought to you by Open Works, a service of The oC llege of Wooster Libraries. It has been accepted for inclusion in Senior Independent Study Theses by an authorized administrator of Open Works. For more information, please contact [email protected]. © Copyright 2014 Catherine G. Clemmens A NOT-SO-SILENT SPRING: THE IMPACTS OF TRAFFIC NOISE ON CALL FEATURES OF THE BLOODY BAY POISON FROG (MANNOPHRYNE OLMONAE) DEPARTMENT OF BIOLOGY INDEPENDENT STUDY THESIS Catherine Grace Clemmens Adviser: Richard Lehtinen Submitted in Partial Fulfillment of the Requirement for Independent Study Thesis in Biology at the COLLEGE OF WOOSTER 2014 TABLE OF CONTENTS I. ABSTRACT II. INTRODUCTION…………………………………………...............…...........1 a. Behavioral Effects of Anthropogenic Noise……………………….........2 b. Effects of Anthropogenic Noise on Frog Vocalization………………....6 c. Why Should We Care? The Importance of Calling for Frogs..................8 d. Color as a Mode of Communication……………………………….…..11 e. Biology of the Bloody Bay Poison Frog (Mannophryne olmonae)…...13 III.
    [Show full text]
  • Anura: Aromobatidae)
    bioRxiv preprint doi: https://doi.org/10.1101/771287; this version posted September 16, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. 1 Sexual dichromatism in the neotropical genus Mannophryne (Anura: Aromobatidae) 2 Mark S. Greener1*, Emily Hutton2, Christopher J. Pollock3, Annabeth Wilson2, Chun Yin Lam2, Mohsen 3 Nokhbatolfoghahai 2, Michael J. Jowers4, and J. Roger Downie2 4 1Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent 5 University, B-9820 Merelbeke, Belgium. 6 2 School of Life Sciences, Graham Kerr Building, University of Glasgow, Glasgow G12 8QQ, UK. 7 3 School of Biology, Faculty of Biological sciences, University of Leeds, Leeds LS2 9JT, UK. 8 4 CIBIO/InBIO (Centro de Investigacao em Biodiversidade e Recursos Genticos), Universide do Porto , 9 Vairao 4485-661, Portugal. 10 *[email protected] 11 ABSTRACT 12 Recent reviews on sexual dichromatism in frogs included Mannophryne trinitatis as the only example 13 they could find of dynamic dichromatism (males turn black when calling) within the family 14 Aromobatidae and found no example of ontogenetic dichromatism in this group. We demonstrate 15 ontogenetic dichromatism in M. trinitatis by rearing post-metamorphic froglets to near maturity: the 16 throats of all individuals started as grey coloured; at around seven weeks, the throat became pale 17 yellow in some, and more strongly yellow as development proceeded; the throats of adults are grey 18 in males and variably bright yellow in females, backed by a dark collar.
    [Show full text]
  • Hand and Foot Musculature of Anura: Structure, Homology, Terminology, and Synapomorphies for Major Clades
    HAND AND FOOT MUSCULATURE OF ANURA: STRUCTURE, HOMOLOGY, TERMINOLOGY, AND SYNAPOMORPHIES FOR MAJOR CLADES BORIS L. BLOTTO, MARTÍN O. PEREYRA, TARAN GRANT, AND JULIÁN FAIVOVICH BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY HAND AND FOOT MUSCULATURE OF ANURA: STRUCTURE, HOMOLOGY, TERMINOLOGY, AND SYNAPOMORPHIES FOR MAJOR CLADES BORIS L. BLOTTO Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil; División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”–CONICET, Buenos Aires, Argentina MARTÍN O. PEREYRA División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”–CONICET, Buenos Aires, Argentina; Laboratorio de Genética Evolutiva “Claudio J. Bidau,” Instituto de Biología Subtropical–CONICET, Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Misiones, Argentina TARAN GRANT Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil; Coleção de Anfíbios, Museu de Zoologia, Universidade de São Paulo, São Paulo, Brazil; Research Associate, Herpetology, Division of Vertebrate Zoology, American Museum of Natural History JULIÁN FAIVOVICH División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”–CONICET, Buenos Aires, Argentina; Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina; Research Associate, Herpetology, Division of Vertebrate Zoology, American
    [Show full text]
  • July to December 2019 (Pdf)
    2019 Journal Publications July Adelizzi, R. Portmann, J. van Meter, R. (2019). Effect of Individual and Combined Treatments of Pesticide, Fertilizer, and Salt on Growth and Corticosterone Levels of Larval Southern Leopard Frogs (Lithobates sphenocephala). Archives of Environmental Contamination and Toxicology, 77(1), pp.29-39. https://www.ncbi.nlm.nih.gov/pubmed/31020372 Albecker, M. A. McCoy, M. W. (2019). Local adaptation for enhanced salt tolerance reduces non‐ adaptive plasticity caused by osmotic stress. Evolution, Early View. https://onlinelibrary.wiley.com/doi/abs/10.1111/evo.13798 Alvarez, M. D. V. Fernandez, C. Cove, M. V. (2019). Assessing the role of habitat and species interactions in the population decline and detection bias of Neotropical leaf litter frogs in and around La Selva Biological Station, Costa Rica. Neotropical Biology and Conservation 14(2), pp.143– 156, e37526. https://neotropical.pensoft.net/article/37526/list/11/ Amat, F. Rivera, X. Romano, A. Sotgiu, G. (2019). Sexual dimorphism in the endemic Sardinian cave salamander (Atylodes genei). Folia Zoologica, 68(2), p.61-65. https://bioone.org/journals/Folia-Zoologica/volume-68/issue-2/fozo.047.2019/Sexual-dimorphism- in-the-endemic-Sardinian-cave-salamander-Atylodes-genei/10.25225/fozo.047.2019.short Amézquita, A, Suárez, G. Palacios-Rodríguez, P. Beltrán, I. Rodríguez, C. Barrientos, L. S. Daza, J. M. Mazariegos, L. (2019). A new species of Pristimantis (Anura: Craugastoridae) from the cloud forests of Colombian western Andes. Zootaxa, 4648(3). https://www.biotaxa.org/Zootaxa/article/view/zootaxa.4648.3.8 Arrivillaga, C. Oakley, J. Ebiner, S. (2019). Predation of Scinax ruber (Anura: Hylidae) tadpoles by a fishing spider of the genus Thaumisia (Araneae: Pisauridae) in south-east Peru.
    [Show full text]
  • Mannophryne Trinitafis
    Volume 27 (January 2017), 5–11 FULL PAPER Herpetological Journal Published by the British How many Trinidad stream frogs (Mannophryne trinitatis) Herpetological Society are there, and should they be regarded as vulnerable to extinction? Mark S. Greener1, Ruth Shepherd1, Paul A. Hoskisson2, Hamish Asmath3 & J. Roger Downie1 1School of Life Sciences, Graham Kerr Building, University of Glasgow, Glasgow G12 8QQ 2Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE 3IInstitute of Marine Affairs, Hilltop Lane, Chaguaramas, Trinidad The Trinidad stream frog Mannophryne trinitatis is a Trinidad endemic inhabiting small seasonal forest streams throughout the northern and central range hills. IUCN has assessed the species as Vulnerable, but the evidence for this remains anecdotal. We surveyed the northern range population at five sites over three consecutive years using visual encounter and audio surveys, also using removal sampling at two of the sites. We further tested for the presence of chytrid infection at six sites in one year. Removal sampling revealed densities of about 100 and 600 frogs per 100 m of stream, resulting in a conservative estimate of 3.5 million frogs in the northern Range when taking the total length of suitable streams into account. None of the 116 frogs were positive for chytrid, and no frog showed skin lesions or clinical signs of disease. Along with a lack of evidence for decline in the extent and quality of Trinidad stream frog habitat, we conclude that this species should no longer be regarded as under threat. Our results combined with previous work should provide a basis for future assessments of this species.
    [Show full text]
  • David Cannatella
    CURRICULUM VITAE 1 JAN 2017 David Cannatella Department of Integrative Biology 1 University Station C0990 University of Texas Austin, TX 78712 [email protected] orcid ID: 0000-0001-8675-0520 EDUCATION 1972-76 University of Southwestern Louisiana BS, Zoology, magna cum laude, 1976. 1976-85 University of Kansas MA, Systematics and Ecology, 1979. MPh, Systematics and Ecology, 1981. PhD, Systematics and Ecology, 1985 with honors. Linda Trueb, advisor. 1986-88 University of California, Berkeley Postdoctoral Fellow, David Wake and Marvalee Wake, advisors. PROFESSIONAL EXPERIENCE 2014- Associate Chairman for Biodiversity Collections, Department of Integrative Biology. 2007- Professor, Department of Integrative Biology, University of Texas. 2005-2007 Associate Professor, Section of Integrative Biology, University of Texas. 2001-2004 Assistant Professor, Section of Integrative Biology, University of Texas. 1995-2000 Senior Lecturer, Department of Zoology (now Department of Integrative Biology), University of Texas. 1990- Curator, Texas Memorial Museum, University of Texas. 1988-90 Assistant Professor and Curator, Museum of Natural Science and Dept. Zoology and Physiology, Louisiana State University, Baton Rouge. 1986-88 NSF Postdoctoral Fellow, University of California, Berkeley. 1986 Visiting Lecturer, Department of Zoology, University of California, Berkeley. Lecturer for Zoology 106: Evolutionary and Functional Vertebrate Morphology. Assistant Research Zoologist, Museum of Vertebrate Zoology, University of California, Berkeley. Curation of herpetological collections. 1984-85 Dissertation Fellow, University of Kansas (KU). 1983 Part-time Faculty, Penn Valley Community College, Kansas City, Missouri. MAJOR AWARDS Big XII Faculty Fellow, 2015. Chair's Fellow, Department of Integrative Biology, 2014. Fulbright Scholar to Brasil, 2011-2012. Curriculum Vitae Cannatella President, Society of Systematic Biologists, 2004-2005.
    [Show full text]
  • The Trinidad 2011 Expedition Report
    University of Glasgow Exploration Society Trinidad Expedition Report 2011 For further information please contact: Gillian Simpson: [email protected] Kirsty Garland: [email protected] Prof. Roger Downie: [email protected] Cover page photos: Gillian Simpson 1 Table of Contents 1. Introduction .................................................................................................................................... 3 2. The Trinidad Experience: Gillian Simpson ....................................................................................... 7 3. Amphibian reproductive ecology and general biology: Roger Downie .......................................... 9 4. Investigation into the Behaviour of the Trinidadian Stream Frog Mannophryne trinitatis : Mary Sumner .................................................................................................................................................. 12 5. Behaviour, growth rate, and escape responses of Pseudis paradoxa tadpoles: Emma Sergeant 22 6. Escape responses of the Trinidadian stream frog, Mannophryne trinitatis: Chloe Rossi ............. 31 7. Behaviour of newly metamorphosed treefrogs: Marie Tiffoney .................................................. 35 8. The Validation of a Non-invasive technique to assess adrenal activity in amphibians, using the cane toad ( Rhinella marina ) as a model species: Rebecca Watson ...................................................... 65 9. Piloting the use of cover boards to survey lizards and snakes in
    [Show full text]
  • Proefschrift Marieke Van Erp 300610
    Tilburg University Accessing natural history van Erp, M.G.J. Publication date: 2010 Document Version Publisher's PDF, also known as Version of record Link to publication in Tilburg University Research Portal Citation for published version (APA): van Erp, M. G. J. (2010). Accessing natural history: Discoveries in data cleaning, structuring, and retrieval. TICC Dissertation Series 13. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Download date: 26. sep. 2021 Accessing Natural History Discoveries in Data Cleaning, Structuring, and Retrieval proefschrift ter verkrijging van de graad van doctor aan de Universiteit van Tilburg, op gezag van de rector magnificus, prof. dr. Ph. Eijlander, in het openbaar te verdedigen ten overstaan van een door het college voor promoties aangewezen commissie in de aula van de Universiteit op woensdag 30 juni 2010 om 14:15 uur door Maria Godefrida Jacoba van Erp geboren op 18 november 1982 te Breda ii Promotor: Prof.
    [Show full text]
  • Ecological Observations on the Critically Endangered Tobago Endemic Frog Mannophryne Olmonae
    Ecological observations on the Critically Endangered Tobago endemic frog Mannophryne olmonae Jahson B. Alemu I1,2, Michelle N.E. Cazabon1, Lena Dempewolf1, Adrian Hailey3, Richard M. Lehtinen4, Ryan P. Mannette1, Kerrie T. Naranjit1, Alicia C.J. Roach1 1 Project L.E.A.P., c/o Department of Life Sciences, University of the West Indies, St. Augustine, Trinidad and Tobago 2 Present address: School of Biological Sciences, University of Wales, Bangor, Gwynedd LL57 2UW, United Kingdom. Corresponding author; e-mail: [email protected] 3 Department of Life Sciences, University of the West Indies, St. Augustine, Trinidad and Tobago 4 Department of Biology, 931 College Mall, The College of Wooster, Wooster, OH 44691, USA Abstract. No previous ecological study has addressed the Critically Endangered (IUCN Red List) Tobago endemic frog Mannophryne olmonae (Aromobatidae) since its initial description in 1983. The species was found in six rivers and 15 first-order streams in northeastern Tobago in 2006. Snout-vent lengths of 126 measured individuals ranged from 9.6-25.7 mm, and the sexes were distinguishable at a length of 18.5 mm. Maximum size was similar in males and females — unlike M. trinitatis from Trinidad, which shows greater sexual size dimorphism. Frogs were found close to streams in forested areas, with a mean distance of 2.0 m from the water’s edge, but only calling males were found within the forest itself. Juveniles made up a much larger proportion of the sample than in M. trinitatis. Calling group size averaged 1.9 males, and large choruses were infrequent. Tadpoles were found in isolated pools close to streams, but not in the stream itself; separate size classes suggest multiple deposition by males.
    [Show full text]
  • Litoria Wilcoxii)
    Behavioural Ecology, Reproductive Biology and Colour Change Physiology in the Stony Creek Frog (Litoria wilcoxii) Author Kindermann, Christina Published 2017 Thesis Type Thesis (PhD Doctorate) School Griffith School of Environment DOI https://doi.org/10.25904/1912/1098 Copyright Statement The author owns the copyright in this thesis, unless stated otherwise. Downloaded from http://hdl.handle.net/10072/367513 Griffith Research Online https://research-repository.griffith.edu.au Behavioural ecology, reproductive biology and colour change physiology in the Stony Creek Frog (Litoria wilcoxii) Christina Kindermann B. Sc. (Hons) Griffith University School of Environment Environmental Futures Research Institute Submitted in fulfilment of the requirements of the degree of Doctor of Philosophy July 2016 Abstract Many animals possess the remarkable ability to change their skin colour. Colour change can have several potential functions, including communication, thermoregulation and camouflage. However, while the physiological mechanisms and functional significance of colour change in other vertebrates have been well studied, the role of colour change in amphibians is still relatively unknown and a disconnection between morphology, physiology and function exists in the literature (review presented in chapter 2). In this thesis, I investigate these multidisciplinary components to understand the processes and functions of colour change in stony creek frogs (Litoria wilcoxii), which are known to turn bright yellow during the breeding season. By (1 – Chapter 3) examining the distribution and structure of dermal pigment cells, (2– Chapter 4) determining hormonal triggers of rapid colour change, (3– Chapter 5) investigating seasonal colour, hormone and disease relationships and (4– Chapter 6) determining the evolutionary functions of colour change, I provide a comprehensive explanation of this phenomenon in L.
    [Show full text]