Ultrasonographic Anatomy of the Coelomic Organs of Boid Snakes (Boa Constrictor Imperator, Python Regius, Python Molurus Molurus, and Python Curtus)
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Extreme Miniaturization of a New Amniote Vertebrate and Insights Into the Evolution of Genital Size in Chameleons
www.nature.com/scientificreports OPEN Extreme miniaturization of a new amniote vertebrate and insights into the evolution of genital size in chameleons Frank Glaw1*, Jörn Köhler2, Oliver Hawlitschek3, Fanomezana M. Ratsoavina4, Andolalao Rakotoarison4, Mark D. Scherz5 & Miguel Vences6 Evolutionary reduction of adult body size (miniaturization) has profound consequences for organismal biology and is an important subject of evolutionary research. Based on two individuals we describe a new, extremely miniaturized chameleon, which may be the world’s smallest reptile species. The male holotype of Brookesia nana sp. nov. has a snout–vent length of 13.5 mm (total length 21.6 mm) and has large, apparently fully developed hemipenes, making it apparently the smallest mature male amniote ever recorded. The female paratype measures 19.2 mm snout–vent length (total length 28.9 mm) and a micro-CT scan revealed developing eggs in the body cavity, likewise indicating sexual maturity. The new chameleon is only known from a degraded montane rainforest in northern Madagascar and might be threatened by extinction. Molecular phylogenetic analyses place it as sister to B. karchei, the largest species in the clade of miniaturized Brookesia species, for which we resurrect Evoluticauda Angel, 1942 as subgenus name. The genetic divergence of B. nana sp. nov. is rather strong (9.9‒14.9% to all other Evoluticauda species in the 16S rRNA gene). A comparative study of genital length in Malagasy chameleons revealed a tendency for the smallest chameleons to have the relatively largest hemipenes, which might be a consequence of a reversed sexual size dimorphism with males substantially smaller than females in the smallest species. -
The Anatomy and Embryology of the Hemipenis of Lampropeltis, Diadophis and Thamnophis and Their Value As Critera of Relationship in the Family Colubridae
Proceedings of the Iowa Academy of Science Volume 51 Annual Issue Article 49 1945 The Anatomy and Embryology of the Hemipenis of Lampropeltis, Diadophis and Thamnophis and Their Value as Critera of Relationship in the Family Colubridae Hugh Clark University of Michigan Let us know how access to this document benefits ouy Copyright ©1945 Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/pias Recommended Citation Clark, Hugh (1945) "The Anatomy and Embryology of the Hemipenis of Lampropeltis, Diadophis and Thamnophis and Their Value as Critera of Relationship in the Family Colubridae," Proceedings of the Iowa Academy of Science, 51(1), 411-445. Available at: https://scholarworks.uni.edu/pias/vol51/iss1/49 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academy of Science by an authorized editor of UNI ScholarWorks. For more information, please contact [email protected]. Clark: The Anatomy and Embryology of the Hemipenis of Lampropeltis, Diad 'THE ANATOMY AND EMBRYOLOGY OF THE HEMIPENIS OF LAMPROPELTIS, DIADOPHIS AND THAMNOPHIS AND THEIR VALUE AS CRITERIA OF RELATION SHIP IN THE FAMILY COLUBRIDAE* HUGH CLARK INTRODUCTION Purpose of the Investigation Evidence for a natural relationship among species, genera and higher groups of snakes has come principally from studies in com parative anatomy and geographical distribution. Fossil remains have yielded very little toward the solution of problems of interest to the taxonomic herpetologist, and genetic work with snakes has only re ccently been undertaken. -
Calabaria and the Phytogeny of Erycine Snakes
<nological Journal of the Linnean Socieb (1993), 107: 293-351. With 19 figures Calabaria and the phylogeny of erycine snakes ARNOLD G. KLUGE Museum of <oolog~ and Department of Biology, University of Michigan, Ann Arbor, Mr 48109 U.S.A. Receiued October 1991, revised manuscript accepted Mar I992 Two major subgroups of erycine snakes, designated Charina and Eyx, are delimited with a cladistic analysis of 75 morphological characters. The hypotheses of species relationships within the two clades are (reinhardtii (bottae, triuirgata) ) and (colubrinus, conicus, elegans, jayakari, muellen’, somalicus (miliaris (tataricus (iaculus, johnii)))),respectively. This pattern of grouping obtains without assuming multistate character additivity. At least 16 synapomorphies indicate that reinhardtii is an erycine and that it is the sister lineage of the (bottae, friuirgata) cladr. Calabaria and Lichanura are synonymized with Charina for reasons of taxonomic efficiency, and to emphasize the New-Old World geographic distribution of the three species in that assemblage. Further resolution of E’yx species relationships is required before Congylophis (type species conicus) can be recognized. ADDITIONAL KEY WORDS:--Biogeography - Cladistics - erycines - fossils - taxonomy CONI‘EN’I’S Introduction ................... 293 Erycine terminal taxa and nomenclature ............ 296 Fossils .................... 301 Methods and materials ................ 302 Eryrine phylogeny ................. 306 Character descriptions ............... 306 Other variation ................ -
Listados Actualizados De Las Especies De Fauna Y Flora Cites Incluidas En Los Apéndices, Distribuidas En Centroamérica Y República Dominicana
Listados Actualizados de las Especies de Fauna y Flora Incluidas en los apéndices de la CITES, distribuidas en Centroamérica y República Dominicana Comisión Centroamericana de Ambiente y Desarrollo Bulevard Orden de Malta Sur, No. 470, Urbanización Santa Elena Antiguo Cuscatlán, la libertad, El Salvador, Centroamérica Tel.: (503) 2520-2400/2248-8800. Fax. (503)2520-2248 www.sica.int/ccad www.sica.int/drcafta LISTADOS ACTUALIZADOS DE LAS ESPECIES DE FAUNA Y FLORA CITES INCLUIDAS EN LOS APÉNDICES, DISTRIBUIDAS EN CENTROAMÉRICA Y REPÚBLICA DOMINICANA LISTADOS ACTUALIZADOS DE LAS ESPECIES DE FAUNA Convención sobre el Comercio Y FLORA Internacional de Especies Amenazadas de incluidas en los Apéndices de la CITES, distribuidas en Fauna y Flora Silvestres Centroamérica y República Dominicana Este documento ha sido posible gracias al apoyo del Gobierno de los Estados Unidos, a través de la Agencia de los Estados Unidos para el Desarrollo Internacional (USAID) y el Departamento del Interior (USDOI). Los puntos de vista/opiniones aquí expresados no reflejan necesariamente los de USAID, el USDOI o los del Gobierno de los Estados Unidos. LISTADOS ACTUALIZADOS DE LAS ESPECIES DE FAUNA Y FLORA CITES INCLUIDAS EN LOS APÉNDICES, DISTRIBUIDAS EN CENTROAMÉRICA Y REPÚBLICA DOMINICANA Créditos Índice Editor INDICE GENERAL Comisión Centroamericana de Ambiente y Desarrollo (CCAD) Centroamérica, 2010. Presentación 6 Agradecimientos 8 Introducción 9 ¿Qué es la CITES? 10 ¿Cómo funciona la CITES? 10 ISBN Antecedentes 12 Objetivos 13 Objetivo General 13 Objetivos Específicos 13 Metodología 14 Revisión Técnica Fátima H. Vanegas Zúniga Resultados 17 Conclusiones y Recomendaciones 110 Investigadoras Dora Ingrid Rivera Luther Bibliografía 111 Hilda María Víquez Mora Fotos INDICE DE CUADROS MARENA-CITES-Nicaragua Fecha de entrada en vigor de la adhesión de los países Centroamericanos y República Dominicana CONAP-Guatemala Cuadro 1. -
Molecular Sex Determination of Captive Komodo Dragons (Varanus Komodoensis) at Gembira Loka Zoo, Surabaya Zoo, and Ragunan Zoo, Indonesia
HAYATI Journal of Biosciences June 2014 Available online at: Vol. 21 No. 2, p 65-75 http://journal.ipb.ac.id/index.php/hayati EISSN: 2086-4094 DOI: 10.4308/hjb.21.2.65 Molecular Sex Determination of Captive Komodo Dragons (Varanus komodoensis) at Gembira Loka Zoo, Surabaya Zoo, and Ragunan Zoo, Indonesia SRI SULANDARI∗, MOCH SAMSUL ARIFIN ZEIN, EVY AYU ARIDA, AMIR HAMIDY Research Center for Biology, The Indonesian Institute of Sciences (LIPI), Cibinong Science Center, Jalan Raya Jakarta Bogor, Km. 46, Cibinong 16911, Indonesia Received September 19, 2013/Accepted April 10, 2014 Captive breeding of endangered species is often difficult, and may be hampered by many factors. Sexual monomorphism, in which males and females are not easily distinguishable, is one such factor and is a common problem in captive breeding of many avian and reptile species. Species-specific nuclear DNA markers, recently developed to identify portions of sex chromosomes, were employed in this study for sex determination of Komodo dragons (Varanus Komodoensis). Each animal was uniquely tagged using a passive integrated micro-transponder (TROVAN 100A type transponders of 13 mm in length and 2 mm in diameter). The sex of a total of 81 individual Komodo dragons (44 samples from Ragunan zoo, 26 samples from Surabaya zoo, and 11 samples from Gembira Loka zoo) were determined using primers Ksex 1for and Ksex 3rev. A series of preliminary PCR amplifications were conducted using DNA from individuals of known sex. During these preliminary tests, researchers varied the annealing temperatures, number of cycles, and concentrations of reagents, in order to identify the best protocol for sex determination using our sample set. -
Hemipenes Eversion Behavior: a New Form of Communication in Two Liolaemus Lizards (Iguania: Liolaemidae)
Canadian Journal of Zoology Hemipenes eversion behavior: a new form of communication in two Liolaemus lizards (Iguania: Liolaemidae) Journal: Canadian Journal of Zoology Manuscript ID cjz-2018-0195.R2 Manuscript Type: Article Date Submitted by the 29-Aug-2018 Author: Complete List of Authors: Ruiz-Monachesi, Mario; Instituto de Bio y Geo Ciencias del NOA Paz, Alejandra; Instituto de Bio y Geo Ciencias del NOA Quipildor, DraftAngel; Instituto de Bio y Geo Ciencias del NOA; Universidad Nacional de Salta, Cátedra Anatomía Comparada Is your manuscript invited for consideration in a Special Not applicable (regular submission) Issue?: SQUAMATA (SNAKES;LIZARDS) < Taxon, visual displays, <i>L. Keyword: coeruleus</i>, <i>L. quilmes</i>, male genitalia https://mc06.manuscriptcentral.com/cjz-pubs Page 1 of 33 Canadian Journal of Zoology Hemipenes eversion behavior: a new form of communication in two Liolaemus lizards (Iguania: Liolaemidae) M.R. Ruiz-Monachesi, A. Paz and M. Quipildor IBIGEO- Instituto de Bio y Geo Ciencias- CONICET. Av. 9 de Julio 14, Rosario de Lerma, 4405 Salta, Argentina. [email protected]; [email protected]; [email protected] Corresponding author: Mario R. Ruiz-Monachesi;Draft Av. 9 de Julio 14, Rosario de Lerma, 4405 Salta, Argentina. E-mail: [email protected] 1 https://mc06.manuscriptcentral.com/cjz-pubs Canadian Journal of Zoology Page 2 of 33 Abstract Males of several animals have intromittent organs and may use these in a communicative context during sexual or intrasexual interactions. In some lizards there have been observations of hemipenes eversion behavior, and the aim of this study is to find out whether this behavior is functionally significant, under a communicative approach. -
Phylogenetic Relationships of the Dwarf Boas and a Comparison of Bayesian and Bootstrap Measures of Phylogenetic Support
MOLECULAR PHYLOGENETICS AND EVOLUTION Molecular Phylogenetics and Evolution 25 (2002) 361–371 www.academicpress.com Phylogenetic relationships of the dwarf boas and a comparison of Bayesian and bootstrap measures of phylogenetic support Thomas P. Wilcox, Derrick J. Zwickl, Tracy A. Heath, and David M. Hillis* Section of Integrative Biology and Center for Computational Biology and Bioinformatics, The University of Texas at Austin, Austin, TX 78712, USA Received 4 February 2002; received in revised form 18 May 2002 Abstract Four New World genera of dwarf boas (Exiliboa, Trachyboa, Tropidophis, and Ungaliophis) have been placed by many syste- matists in a single group (traditionally called Tropidophiidae). However, the monophyly of this group has been questioned in several studies. Moreover, the overall relationships among basal snake lineages, including the placement of the dwarf boas, are poorly understood. We obtained mtDNAsequence data for 12S, 16S, and intervening tRNA–valgenes from 23 species of snakes repre- senting most major snake lineages, including all four genera of New World dwarf boas. We then examined the phylogenetic position of these species by estimating the phylogeny of the basal snakes. Our phylogenetic analysis suggests that New World dwarf boas are not monophyletic. Instead, we find Exiliboa and Ungaliophis to be most closely related to sand boas (Erycinae), boas (Boinae), and advanced snakes (Caenophidea), whereas Tropidophis and Trachyboa form an independent clade that separated relatively early in snake radiation. Our estimate of snake phylogeny differs significantly in other ways from some previous estimates of snake phy- logeny. For instance, pythons do not cluster with boas and sand boas, but instead show a strong relationship with Loxocemus and Xenopeltis. -
HERP. G66 A7 Uhiumiiy B{ Koiifttu
HERP. QL G66 .06 A7 The UHiumiiy b{ Koiifttu Wtmm «i Hobiuit Kiftto'uf HARVARD UNIVERSITY G Library of the Museum of Comparative Zoology UNIVERSITY OF KANSAS PUBLICATIONS MUSEUM OF NATURAL HISTORY Copies of publications may be obtained from the Publications Secretary, Museum of Natural History, University of Kansas, Law- rence, Kansas 66045 Price for this number: $6.00 postpaid Front cover: The subspecies of the ridgenose rattlesnake C. iv. (Crotalus willardi). Clockwise, starting from the upper left, amahilis, C. w. meridionalis, C. w. silus, and C. w. willardi. All photographs by Joseph T. Collins, with the cooperation of the Dallas Zoo. University of Kansas Museum of Natural History Special Publication No. 5 December 14, 1979 THE NATURAL HISTORY OF MEXICAN RATTLESNAKES By BARRY L. ARMSTRONG Research Associate and JAMES B. MURPHY Curator Department of Herpetology Dallas Zoo 621 East Clarendon Drive Dallas, Texas 75203 University of Kansas Lawrence 1979 University of Kansas Publications Museum of Natural History Editor: E. O. Wiley Co-editor: Joseph T. Collins Special Publication No. 5 pp. 1-88; 43 figures 2 tables Published 14 December 1979 MUS. COMP. ZOO' MAY 1 7 IPR? HARVARD Copyrighted 1979 UNIVERSITY By Museum of Natural History University of Kansas '~\ Lawrence, Kansas 66045 U.S.A. Printed By University of Kansas Printing Service Lawrence, Kansas ISBN: 0-89338-010-5 To Jonathan A. Campbell for his encouragement *?;:»:j>.^ ,_.. = -V-.^. ^4^4 PREFACE Beginning in November, 1966, studies on rattlesnakes (genera Crotalus and Sistrurus) and other pit vipers were initiated at the Dallas Zoo which included techniques for maintenance and disease treatments, in conjunction with observations on captive and wild populations. -
1994 PROCEEDINGS ASSOCIATION of REPTIUAN and AMPHIBIAN VEIERINARIANS 1 Basic Examination Instrumentation
PIIYSICAL EXAMINATION OF REPTILES AND AMPHIBIANS Paul Raiti, DVM· Beverlie Animal Hospital, 17 ~ Grand St,. Mt. Vernon, NY 10552, USA Waiting oom Recommendations All reptiles must be presented in appropriate escape proof containers. Snakes should be confined in snake bags or pillow cases that are secured with a knot. Large pythons may be transported in ice coolers that have a locking hinge; the drainage vent must be open to permit ventilation. During the colder months clients should be instructed to keep their reptiles warm (27oC/80oF) during transport to the hospital. Chelonians (turtles and tortoises) may be transported in appropriately sized boxes. Small and medium sized lizards should be brought in cloth bags or plastic containers. Large iguanas and monitor lizards may be placed in duffel bags and then put in cat carriers. Amphibians such as frogs, salamanders, etc., may be transported in appropriately sized plastic containers to which water or a moist substrate (sphagnum, peat moss) has been added. Reptile owners should be advised not to display their pets in the waiting room as other clients may find the experience disconcerting. If you know it will take more than 15 minutes before examining the reptile, a technician should place it on or near a heating source in a cage. Heating pads or heat lamps work well. The waiting room should communicate to the owner that your practice is familiar with treating reptiles. Advanced Vivarium Systems, Lakeside, CA, 92040, publishes a series of booklets describing the captive husbandry of various reptiles and amphibians that are commonly maintained in captivity. Displaying se booklets in conjunction with photographs and posters of assorted reptiles enables the first time client to feel comfortable and learn about their pets while waiting to be examined. -
Tan Choo Hock Thesis Submitted in Fulfi
TOXINOLOGICAL CHARACTERIZATIONS OF THE VENOM OF HUMP-NOSED PIT VIPER (HYPNALE HYPNALE) TAN CHOO HOCK THESIS SUBMITTED IN FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY FACULTY OF MEDICINE UNIVERSITY OF MALAYA KUALA LUMPUR 2013 Abstract Hump-nosed pit viper (Hypnale hypnale) is a medically important snake in Sri Lanka and Western Ghats of India. Envenomation by this snake still lacks effective antivenom clinically. The species is also often misidentified, resulting in inappropriate treatment. The median lethal dose (LD50) of H. hypnale venom varies from 0.9 µg/g intravenously to 13.7 µg/g intramuscularly in mice. The venom shows procoagulant, hemorrhagic, necrotic, and various enzymatic activities including those of proteases, phospholipases A2 and L-amino acid oxidases which have been partially purified. The monovalent Malayan pit viper antivenom and Hemato polyvalent antivenom (HPA) from Thailand effectively cross-neutralized the venom’s lethality in vitro (median effective dose, ED50 = 0.89 and 1.52 mg venom/mL antivenom, respectively) and in vivo in mice, besides the procoagulant, hemorrhagic and necrotic effects. HPA also prevented acute kidney injury in mice following experimental envenomation. Therefore, HPA may be beneficial in the treatment of H. hypnale envenomation. H. hypnale-specific antiserum and IgG, produced from immunization in rabbits, effectively neutralized the venom’s lethality and various toxicities, indicating the feasibility to produce an effective specific antivenom with a common immunization regime. On indirect ELISA, the IgG cross-reacted extensively with Asiatic crotalid venoms, particularly that of Calloselasma rhodostoma (73.6%), suggesting that the two phylogenically related snakes share similar venoms antigenic properties. -
(Crotalus Oreganus Helleri) Hunting Behavior Through Community Science
diversity Article Quantifying Southern Pacific Rattlesnake (Crotalus oreganus helleri) Hunting Behavior through Community Science Emily R. Urquidi * and Breanna J. Putman Department of Biology, California State University San Bernardino, 5500 University Parkway, San Bernardino, CA 92407, USA; [email protected] * Correspondence: [email protected] Abstract: It is increasingly important to study animal behaviors as these are the first responses organisms mount against environmental changes. Rattlesnakes, in particular, are threatened by habitat loss and human activity, and require costly tracking by researchers to quantify the behaviors of wild individuals. Here, we show how photo-vouchered observations submitted by community members can be used to study cryptic predators like rattlesnakes. We utilized two platforms, iNaturalist and HerpMapper, to study the hunting behaviors of wild Southern Pacific Rattlesnakes. From 220 observation photos, we quantified the direction of the hunting coil (i.e., “handedness”), microhabitat use, timing of observations, and age of the snake. With these data, we looked at whether snakes exhibited an ontogenetic shift in behaviors. We found no age differences in coil direction. However, there was a difference in the microhabitats used by juveniles and adults while hunting. We also found that juveniles were most commonly observed during the spring, while adults were more consistently observed throughout the year. Overall, our study shows the potential of using Citation: Urquidi, E.R.; Putman, B.J. community science to study the behaviors of cryptic predators. Quantifying Southern Pacific Rattlesnake (Crotalus oreganus helleri) Keywords: citizen science; conservation; ontogeny; behavioral lateralization; snakes Hunting Behavior through Community Science. Diversity 2021, 13, 349. https://doi.org/10.3390/ d13080349 1. -
Phylogenetic Relationships of Colubroid Snakes Based on Rnitochondrial DNA Sequences
<oologicalJoumal ofthe Linnem Soriep (1998), 122: 455-487. With 6 fi<pures Phylogenetic relationships of colubroid snakes based on rnitochondrial DNA sequences FRED KRAUS AND WESLEY M. BROWN' Department OfBiokogy, Universig OfMichZgan, Ann Arbor, MI 48109-1048, USA. Received A@'l 1996; accepted for publication Januaty 1997 We used a 694 bp length ofthe mitochondrial ND4 gene from 40 genera to infer phylogenetic relationships among colubroid snakes. The goals of this study were to identify conserved subsets of ND4 sequence data that could be used to address (1) which nominal higher-level colubroid taxa are monophyletic, and (2) the relationships among the monophyletic lineages identified. Use of transversions only proved the most reliable and efficient means of retrieving colubroid relationships. Transversion parsimony and neighbour-joining analyses iden* similar monophyletic higher-level taxa, but relationships among these lineages differ con- siderably between the two analyses. These differences were affected by the inclusion/exclusion of (1) transitions, (2) autapomorphies, and (3) the boid outgroups. Saturation effects among the transitions, uninformativeness of autapomorphies for clustering taxa, and long-branch and base-compositional problems among the boids lead us to regard the tree resulting from transversion parsimony analysis rooted with Acrochordus as the best current estimate of colubroid phylogenetic relationships. However, several aspects of this proposed phylogeny need further testing (e.g. the apparent diphyly of Natricinae is especially controversial). Relationships retrieved using all colubroid taxa are not obtained when sparsely or unevenly sampled experimental subsets of taxa are used instead, suggesting that long-branch problems can severely compromise elucidation of colubroid relationships if limited taxonomic sampling strategies are followed.