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Cretaceous Fossil Gecko Hand Reveals a Strikingly Modern Scansorial Morphology: Qualitative and Biometric Analysis of an Amber-Preserved Lizard Hand
Cretaceous Research 84 (2018) 120e133 Contents lists available at ScienceDirect Cretaceous Research journal homepage: www.elsevier.com/locate/CretRes Cretaceous fossil gecko hand reveals a strikingly modern scansorial morphology: Qualitative and biometric analysis of an amber-preserved lizard hand * Gabriela Fontanarrosa a, Juan D. Daza b, Virginia Abdala a, c, a Instituto de Biodiversidad Neotropical, CONICET, Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucuman, Argentina b Department of Biological Sciences, Sam Houston State University, 1900 Avenue I, Lee Drain Building Suite 300, Huntsville, TX 77341, USA c Catedra de Biología General, Facultad de Ciencias Naturales, Universidad Nacional de Tucuman, Argentina article info abstract Article history: Gekkota (geckos and pygopodids) is a clade thought to have originated in the Early Cretaceous and that Received 16 May 2017 today exhibits one of the most remarkable scansorial capabilities among lizards. Little information is Received in revised form available regarding the origin of scansoriality, which subsequently became widespread and diverse in 15 September 2017 terms of ecomorphology in this clade. An undescribed amber fossil (MCZ Re190835) from mid- Accepted in revised form 2 November 2017 Cretaceous outcrops of the north of Myanmar dated at 99 Ma, previously assigned to stem Gekkota, Available online 14 November 2017 preserves carpal, metacarpal and phalangeal bones, as well as supplementary climbing structures, such as adhesive pads and paraphalangeal elements. This fossil documents the presence of highly specialized Keywords: Squamata paleobiology adaptive structures. Here, we analyze in detail the manus of the putative stem Gekkota. We use Paraphalanges morphological comparisons in the context of extant squamates, to produce a detailed descriptive analysis Hand evolution and a linear discriminant analysis (LDA) based on 32 skeletal variables of the manus. -
Endemic to the Hills of Paraje Tres Cerros, Corrientes Province, Argentina
Zootaxa 3709 (2): 162–176 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2013 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3709.2.4 http://zoobank.org/urn:lsid:zoobank.org:pub:0066DBF2-80C4-4AF9-A0FE-7DD6D1E5097D A new species of Homonota (Reptilia: Squamata: Gekkota: Phyllodactylidae) endemic to the hills of Paraje Tres Cerros, Corrientes Province, Argentina RODRIGO CAJADE1*, EDUARDO GABRIEL ETCHEPARE1, CAMILA FALCIONE1, DIEGO ANDRÉS BARRASSO2 & BLANCA BEATRIZ ALVAREZ1 1Laboratorio de Herpetología, Departamento de Biología, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste (FACENA-UNNE) Av. Libertad 5470, Corrientes, Argentina 2Centro Nacional Patagónico (CENPAT-CONICET). Blvd. Brown 2915 (U9120ACD), Puerto Madryn, Chubut, Argentina *Corresponding author. E-mail: [email protected] Abstract The genus Homonota comprises nine South American species of terrestrial and nocturnal lizards. Homonota lizards lack the femoral pores typical of other South American Phyllodactylidae, and their infradigital lamellas are not expanded. We here describe a new species, Homonota taragui sp. nov., exclusively found on a small group of three hills up to 179 meters above sea level in central eastern Corrientes Province, Argentina. The new species differs from other Homonota species by a combination of characters, including: a well-marked dorsal, reticulate, dark pattern contrasting with a lighter colored background; small, star-shaped chromatophores on the abdomen; the post-orbital region of the head covered by granular scales; the dorsal and anterior regions of the thighs covered by keeled scales interspersed with cycloid scales; and the internasal scale in contact with rostral scales. -
Redalyc.Comparative Studies of Supraocular Lepidosis in Squamata
Multequina ISSN: 0327-9375 [email protected] Instituto Argentino de Investigaciones de las Zonas Áridas Argentina Cei, José M. Comparative studies of supraocular lepidosis in squamata (reptilia) and its relationships with an evolutionary taxonomy Multequina, núm. 16, 2007, pp. 1-52 Instituto Argentino de Investigaciones de las Zonas Áridas Mendoza, Argentina Disponible en: http://www.redalyc.org/articulo.oa?id=42801601 Cómo citar el artículo Número completo Sistema de Información Científica Más información del artículo Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Página de la revista en redalyc.org Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto ISSN 0327-9375 COMPARATIVE STUDIES OF SUPRAOCULAR LEPIDOSIS IN SQUAMATA (REPTILIA) AND ITS RELATIONSHIPS WITH AN EVOLUTIONARY TAXONOMY ESTUDIOS COMPARATIVOS DE LA LEPIDOSIS SUPRA-OCULAR EN SQUAMATA (REPTILIA) Y SU RELACIÓN CON LA TAXONOMÍA EVOLUCIONARIA JOSÉ M. CEI † las subfamilias Leiosaurinae y RESUMEN Enyaliinae. Siempre en Iguania Observaciones morfológicas Pleurodonta se evidencian ejemplos previas sobre un gran número de como los inconfundibles patrones de especies permiten establecer una escamas supraoculares de correspondencia entre la Opluridae, Leucocephalidae, peculiaridad de los patrones Polychrotidae, Tropiduridae. A nivel sistemáticos de las escamas específico la interdependencia en supraoculares de Squamata y la Iguanidae de los géneros Iguana, posición evolutiva de cada taxón Cercosaura, Brachylophus, -
The Ecology of Lizard Reproductive Output
Global Ecology and Biogeography, (Global Ecol. Biogeogr.) (2011) ••, ••–•• RESEARCH The ecology of lizard reproductive PAPER outputgeb_700 1..11 Shai Meiri1*, James H. Brown2 and Richard M. Sibly3 1Department of Zoology, Tel Aviv University, ABSTRACT 69978 Tel Aviv, Israel, 2Department of Biology, Aim We provide a new quantitative analysis of lizard reproductive ecology. Com- University of New Mexico, Albuquerque, NM 87131, USA and Santa Fe Institute, 1399 Hyde parative studies of lizard reproduction to date have usually considered life-history Park Road, Santa Fe, NM 87501, USA, 3School components separately. Instead, we examine the rate of production (productivity of Biological Sciences, University of Reading, hereafter) calculated as the total mass of offspring produced in a year. We test ReadingRG6 6AS, UK whether productivity is influenced by proxies of adult mortality rates such as insularity and fossorial habits, by measures of temperature such as environmental and body temperatures, mode of reproduction and activity times, and by environ- mental productivity and diet. We further examine whether low productivity is linked to high extinction risk. Location World-wide. Methods We assembled a database containing 551 lizard species, their phyloge- netic relationships and multiple life history and ecological variables from the lit- erature. We use phylogenetically informed statistical models to estimate the factors related to lizard productivity. Results Some, but not all, predictions of metabolic and life-history theories are supported. When analysed separately, clutch size, relative clutch mass and brood frequency are poorly correlated with body mass, but their product – productivity – is well correlated with mass. The allometry of productivity scales similarly to metabolic rate, suggesting that a constant fraction of assimilated energy is allocated to production irrespective of body size. -
A Phylogeny and Revised Classification of Squamata, Including 4161 Species of Lizards and Snakes
BMC Evolutionary Biology This Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes BMC Evolutionary Biology 2013, 13:93 doi:10.1186/1471-2148-13-93 Robert Alexander Pyron ([email protected]) Frank T Burbrink ([email protected]) John J Wiens ([email protected]) ISSN 1471-2148 Article type Research article Submission date 30 January 2013 Acceptance date 19 March 2013 Publication date 29 April 2013 Article URL http://www.biomedcentral.com/1471-2148/13/93 Like all articles in BMC journals, this peer-reviewed article can be downloaded, printed and distributed freely for any purposes (see copyright notice below). Articles in BMC journals are listed in PubMed and archived at PubMed Central. For information about publishing your research in BMC journals or any BioMed Central journal, go to http://www.biomedcentral.com/info/authors/ © 2013 Pyron et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes Robert Alexander Pyron 1* * Corresponding author Email: [email protected] Frank T Burbrink 2,3 Email: [email protected] John J Wiens 4 Email: [email protected] 1 Department of Biological Sciences, The George Washington University, 2023 G St. -
Evaluating Evolutionary History in the Face of High Gene Tree Discordance in Australian Gehyra (Reptilia: Gekkonidae)
Heredity (2014) 113, 52–63 & 2014 Macmillan Publishers Limited All rights reserved 0018-067X/14 www.nature.com/hdy ORIGINAL ARTICLE Evaluating evolutionary history in the face of high gene tree discordance in Australian Gehyra (Reptilia: Gekkonidae) M Sistrom1,2, M Hutchinson1,2, T Bertozzi1,3 and S Donnellan1,2 Species tree methods have provided improvements for estimating species relationships and the timing of diversification in recent radiations by allowing for gene tree discordance. Although gene tree discordance is often observed, most discordance is attributed to incomplete lineage sorting rather than other biological phenomena, and the causes of discordance are rarely investigated. We use species trees from multi-locus data to estimate the species relationships, evolutionary history and timing of diversification among Australian Gehyra—a group renowned for taxonomic uncertainty and showing a large degree of gene tree discordance. We find support for a recent Asian origin and two major clades: a tropically adapted clade and an arid adapted clade, with some exceptions, but no support for allopatric speciation driven by chromosomal rearrangement in the group. Bayesian concordance analysis revealed high gene tree discordance and comparisons of Robinson–Foulds distances showed that discordance between gene trees was significantly higher than that generated by topological uncertainty within each gene. Analysis of gene tree discordance and incomplete taxon sampling revealed that gene tree discordance was high whether terminal taxon or gene -
The Whitley Laing Foundation
Rufford Maurice Laing Foundation Rufford Small Grant for Nature Conservation - Final Report (2006-2007) - LIVESTOCK AND NATIVE FAUNA: CHANGES AFFECTING PREDATION AND SECONDARY DISPERSAL OF SEEDS OF WOODY PLANT IN THE SEMIARID CHACO WOODLAND, COPO NATIONAL PARK AND SURROUNDINGS, ARGENTINA. REF: 18.09.05 PRINCIPAL RESEARCHER: Carlos Eduardo Trucco Alemán E-MAIL: [email protected] AFFILIATION: - National Council of Scientific and Technical Research (CONICET), Argentina - Biological and Geological Sciences Institute (IBIGEO), Natural Science Museum of Salta National University, Argentina May, 2007 INDEX I. Introduction. II. Work objectives. III. Study area. IV. Methodology. Seed removal experiments. Seed removal agents. Identification of dispersal and predation agents. V. Drawbacks. VI. Participants. VII. Results & Discussion. Seed removal experiments. Seed removal agents. Identification of dispersal and predation agents. VIII. Conclusions. IX. References. X. Publications in progress related with the research project. XI. Technical Reports sent to National Park Administration. XII. Congress presentations. XIII. Budget & expenditure. XIV. Acknowledgments. I. Introduction. The Chaco woodland is one of the most diverse and threatened ecosystems in South America (Barchuk et al. 1998). Overgrazing, logging, and dry land agriculture are transforming the region into shrub lands with low resource-use potential (Bucher and Huszar 1999). Cattle raising modifies natural environments directly in different ways: livestock selects the plants species it eats (Wallis de Vries and Schippers 1994, Fleischner 1994), creating a series of alterations of the specific structure and composition of the forest modifying the composition of the plants communities (Sala et al. 1986, Fleischner 1994, Grulke 1994, Gardner et al. 1995), livestock affects differentially the establishment of native plants (Oesterheld and Sala 1990) and it promotes the recruitment of exotic species (Fleischner 1994, Milton et al. -
CALIFORNIA STATE UNIVERSITY, NORTHRIDGE Comparative
CALIFORNIA STATE UNIVERSITY, NORTHRIDGE Comparative Thermal Tolerances, Performance Eurythermy, and Temperature- Dependent Energy Demands of the World’s Southernmost Gecko with Implications for a Changing Climate A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Biology by Denita M. Weeks December 2013 The thesis of Denita M. Weeks is approved: Peter J. Edmunds, Ph.D. Date Steven R. Dudgeon, Ph.D. Date Robert E. Espinoza, Ph.D. Chair Date California State University, Northridge ii ACKNOWLEDGMENTS I would like to thank Robert E. Espinoza, Félix B. Cruz, Gabriela Perotti, Lorena B. Quiroga, Eduardo A. Sanabria, and Jason R. Warner for help in the field. I am especially grateful to Cristián S. Abdala, Félix B. Cruz, Juan Pablo Juliá, Fernando Lobo, Gabriela Perotti, Lorena B. Quiroga, Eduardo A. Sanabria, Soledad Valdecantos, and their families for their logistical support and kind hospitality. The members of my committee, Robert E. Espinoza, Peter J. Edmunds, and Steven R. Dudgeon, have been invaluable to my accomplishments at CSUN. Without their knowledge, support, and guidance, this study and all of my professional growth would not have been so productive and rewarding. Much thanks to Barbara Joos, Cristián S. Abdala, and Rocio Aguilar for providing helpful resources or feedback on the thesis and to Michael J. Angilletta for statistical advice. Additionally, I thank the following people for contribution to this thesis and making my time at California State University, Northridge so enjoyable and productive: Beck A. Wehrle, Alissa de Koning, Jason R. Warner, Mark V. Oliva, Fritz Hertel, Paul Wilson, Tim J. -
Curriculum Vitae
CURRICULUM VITAE Luciano Javier Avila Investigador Independiente Carrera del Investigador Científico y Tecnológico (CENPAT) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Instituto Patagónico para el Estudio de Ecosistemas Continentales (IPEEC) Dirección actual: Centro Nacional Patagónico - CONICET Boulevard Almirante Guillermo Brown 2915. U9120ACD. Puerto Madryn (Chubut) Argentina. Formación Académica/Academic Background: 1) Doctor en Ciencias Biológicas. Orientación Zoología/PhD Zoology. Universidad Nacional de Tucumán. 3 de Abril de 1996. 2) Licenciado en Ciencias Biológicas/Bachelor-Master in Biology Universidad Nacional de Río Cuarto. 2 de Marzo de 1990. 3) Postdoctorados/Postdoctoral: a-Interno: Universidad Nacional de Río Cuarto, Argentina. Abril 1996 – Diciembre 1998. Director: Ricardo Armando Martori. Beca de Postdoctorado CONICET (1996-1998). b-Externo: Brigham Young University, Provo, Utah, EE.UU. Agosto 2000 – Febrero 2004. Director: Jack W. Sites, Jr. Beca de Postdoctorado Externo CONICET (2001-2003), Postdoctoral Contract BYU 2003-2004. CARGOS EN INVESTIGACIÓN/RESEARCH APPOINMENTS *2010-present. Investigador Independiente. CONICET. 1 de Junio 2010. Resol. Direc. 2505/10. *2014-2015. Associate Research Professor/Faculty. Department of Biology. Brigham Young University (Faculty June-December 2015). *2004-2010. Investigador Adjunto. CONICET. 1 de Junio de 2004. Resol. Direc. 00/2004. *2000-2004. Adjunct Research Professor. Department of Biology. Brigham Young University. *1998-2004. Investigador Asistente CONICET. 26 Enero 1998. Resol. Direc. 399/97. Principales áreas de interés: Zoología - Herpetología: sistemática, filogenia, bioecología, conservación, biogeografía y distribución geográfica, biodiversidad e inventarios biológicos. Main research interest: Zoology - Herpetology: systematic, phylogeny, bioecology, conservation, biogeography and geographic distribution, biodiversity and biological surveys. 1 PUBLICACIONES/PUBLICATIONS Artículos/Peer review journals 87-Olave M., L.J. -
Distribution, Diversity and Conservation Status of Bolivian Reptiles
Distribution, diversity and conservation status of Bolivian Reptiles Dissertation zur Erlangung des Doktorgrades (Dr. rer. nat.) der Mathematisch-Naturwissenschaftlichen Fakultät der Rheinischen Friedrichs-Wilhelms-Universität Bonn vorgelegt von Dirk Embert aus Bonn Bonn, 2007 Erstgutachter: Prof. Dr. Wolfgang Böhme Zweitgutachter: Prof. Dr. Gerhard Kneitz Mündliche Prüfung: 29.11.2007 Diese Dissertation ist auf dem Hochschulschriftenserver der ULB Bonn http://hss.ulb.uni-bonn.de/diss_online elektronisch publiziert. 2008 Dedication This work is dedicated to my grandparents Franz and Irene Roeder. Their support and love they shared with me throughout all my life will always be in my heart. Widmung Diese Arbeit widme ich meinen Großeltern Franz und Irene Roeder. Ihre Unterstuetzung und Liebe die sie mir gegeben haben werden immer einen Platz in meinem Herzen haben. Abstract The study area was defined as being the whole country of Bolivia. The Conservation Status of Bolivian Reptiles has been poorly investigated. Very few species had been assessed by the IUCN and very few were listed in CITES. As Bolivia still is within the countries with best conserved habitat, now is the moment to plan the conservation of its Biodiversity. This makes the present study urgent and necessary. To be able to identify the conservation status of the reptiles of Bolivia first the species had to be identified correctly, a complete list of reptiles in Bolivia, and a most complete possible database had to be elaborated including geo-referenced data. On base of the obtained information distribution of the species had been extrapolated with the Distribution Model BIOM (Sommer et. al 2002). Later on the maps were overlaid to get different maps as species richness and endemism richness. -
Universidad Nacional Autónoma De México
UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO FACULTAD DE CIENCIAS Impacto Ecológico de la Herpetofauna Introducida e Invasora en la República Mexicana T E S I S QUE PARA OBTENER EL TÍTULO DE BIÓLOGA P R E S E N T A: Angeles Rocio Romero Mayén Directora de tesis: M en C. Xochitl Aguilar Miguel 2008 UNAM – Dirección General de Bibliotecas Tesis Digitales Restricciones de uso DERECHOS RESERVADOS © PROHIBIDA SU REPRODUCCIÓN TOTAL O PARCIAL Todo el material contenido en esta tesis esta protegido por la Ley Federal del Derecho de Autor (LFDA) de los Estados Unidos Mexicanos (México). El uso de imágenes, fragmentos de videos, y demás material que sea objeto de protección de los derechos de autor, será exclusivamente para fines educativos e informativos y deberá citar la fuente donde la obtuvo mencionando el autor o autores. Cualquier uso distinto como el lucro, reproducción, edición o modificación, será perseguido y sancionado por el respectivo titular de los Derechos de Autor. A mi papá, Rafael y a mi mama Rosaura por toda la confianza, el ejemplo y el cariño que me dieron para llegar hasta aquí A mis hermanas, Viole y Tania por todo lo compartido, lo bueno y lo malo. A Angel por estar siempre a mi lado. A la memoria de mis abuelos, Jacinto, Aurora, Pedro y a mi abuela Isabel. A mis tías: Isabel, Paty,Claudia, Meche, Maru, Ale, Gabi, Ana Lilia Y tios: Jorge, Fer, Aaron, Gerardo, Carlos, Miguel, David, A mis primos y primas: Aurora, Amaranta, Amaury, Ambar, Abril, Alayde, Andrea Atahualpa, Isra, Gela, Gerardo, Alo, Alged, Manuel, Aura, Carla, Pedro, Anthar Tamara, Alejandra y Jaquelin A mis sobrinos y sobrinas: Arzú, Hemzani, Luis, Regina, Astrid, Aylin, Santiago. -
ABSTRACTS 29 Reptile Ecology I, Highland A, Sunday 15 July 2018
THE JOINT MEETING OF ASIH SSAR HL lcHTHYOLOGISTS & HERPETOLOGISTS ROCHESTER, NEW YORK 2018 ABSTRACTS 29 Reptile Ecology I, Highland A, Sunday 15 July 2018 Curtis Abney, Glenn Tattersall and Anne Yagi Brock University, St. Catharines, Ontario, Canada Thermal Preference and Habitat Selection of Thamnophis sirtalis sirtalis in a Southern Ontario Peatland Gartersnakes represent the most widespread reptile in North America. Despite occupying vastly different biogeoclimatic zones across their range, evidence suggests that the thermal preferenda (Tset) of gartersnakes has not diverged significantly between populations or different Thamnophis species. The reason behind gartersnake success could lie in their flexible thermoregulatory behaviours and habitat selection. We aimed to investigate this relationship by first identifying the Tset of a common gartersnake species (Thamnophis sirtalis sirtalis) via a thermal gradient. We then used this Tset parameter as a baseline for calculating the thermal quality of an open, mixed, and forested habitat all used by the species. We measured the thermal profiles of these habitats by installing a series of temperature-recording analogues that mimicked the reflectance and morphology of living gartersnakes and recorded environmental temperatures as living snakes experience them. Lastly, we used coverboards to survey the current habitat usage of T. s. sirtalis. Of the three habitats, we found that the open habitat offered the highest thermal quality throughout the snake’s active season. In contrast, we recorded the greatest number of snakes using the mixed habitat which had considerably lower thermal quality. Although the open habitat offered the greatest thermal quality, we regularly recorded temperatures exceeding the upper range of the animals’ thermal preference.