The Available Name for the Taxonomic Group Uniting Boas and Pythons
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Scale Sensillae of the File Snake (Serpentes: Acrochordidae) and Some Other Aquatic and Burrowing Snakes
SCALE SENSILLAE OF THE FILE SNAKE (SERPENTES: ACROCHORDIDAE) AND SOME OTHER AQUATIC AND BURROWING SNAKES by DAVID POVEL and JEROEN VAN DER KOOIJ (Section Dynamic Morphology,Institute of Evolutionaryand Ecological Sciences, Leiden University,P.O. Box 9516, 2300 RA Leiden, The Netherlands) ABSTRACT The acrochordid snakes are aquatic, living in environmentswith often a poor visibility. It therefore was investigatedhow these animals detect their prey. Two earlier studies of their scales revealed a rather complex scale organ, composedof hairlike protrusions and plate-like structures. However, no satisfactory explanation was given for the structures found, e.g., an undefined sensilla or a gland. Skin samples from various sites of the body of Acrochordus granulatus and A. javanicus were studied. Scanning electron microscopic pictures revealed that each scale of the head contains up to seven sensillae, and each of the keeled scales of the rest of the body has one. Also a modified Allochrome staining procedure on tissue samples was performed to detect glycogen, which is known to occur in discoidal nerve endings of tactile sense organs of reptiles. Light microscopicslides revealedglycogen particles in a small pillow-shaped area just below the hairlike protrusions of an organ. Moreover, small nerves were recognized near the same location. No indications were found for the scale organs to have a glandular function. Because of the reported reactions of a snake when it is touched by a fish, these scale sensilla are proposed to be very sensitivemechanoreceptors. Comparisons were made with the scale organs of snakes from various habitats, viz. the seasnake Lapemis hardwicki, and burrowing snakes such as Xenopeltis unicolor and Cylindrophisrufus. -
500 Natural Sciences and Mathematics
500 500 Natural sciences and mathematics Natural sciences: sciences that deal with matter and energy, or with objects and processes observable in nature Class here interdisciplinary works on natural and applied sciences Class natural history in 508. Class scientific principles of a subject with the subject, plus notation 01 from Table 1, e.g., scientific principles of photography 770.1 For government policy on science, see 338.9; for applied sciences, see 600 See Manual at 231.7 vs. 213, 500, 576.8; also at 338.9 vs. 352.7, 500; also at 500 vs. 001 SUMMARY 500.2–.8 [Physical sciences, space sciences, groups of people] 501–509 Standard subdivisions and natural history 510 Mathematics 520 Astronomy and allied sciences 530 Physics 540 Chemistry and allied sciences 550 Earth sciences 560 Paleontology 570 Biology 580 Plants 590 Animals .2 Physical sciences For astronomy and allied sciences, see 520; for physics, see 530; for chemistry and allied sciences, see 540; for earth sciences, see 550 .5 Space sciences For astronomy, see 520; for earth sciences in other worlds, see 550. For space sciences aspects of a specific subject, see the subject, plus notation 091 from Table 1, e.g., chemical reactions in space 541.390919 See Manual at 520 vs. 500.5, 523.1, 530.1, 919.9 .8 Groups of people Add to base number 500.8 the numbers following —08 in notation 081–089 from Table 1, e.g., women in science 500.82 501 Philosophy and theory Class scientific method as a general research technique in 001.4; class scientific method applied in the natural sciences in 507.2 502 Miscellany 577 502 Dewey Decimal Classification 502 .8 Auxiliary techniques and procedures; apparatus, equipment, materials Including microscopy; microscopes; interdisciplinary works on microscopy Class stereology with compound microscopes, stereology with electron microscopes in 502; class interdisciplinary works on photomicrography in 778.3 For manufacture of microscopes, see 681. -
The Skull of the Upper Cretaceous Snake Dinilysia Patagonica Smith-Woodward, 1901, and Its Phylogenetic Position Revisited
Zoological Journal of the Linnean Society, 2012, 164, 194–238. With 24 figures The skull of the Upper Cretaceous snake Dinilysia patagonica Smith-Woodward, 1901, and its phylogenetic position revisited HUSSAM ZAHER1* and CARLOS AGUSTÍN SCANFERLA2 1Museu de Zoologia da Universidade de São Paulo, Avenida Nazaré 481, Ipiranga, 04263-000, São Paulo, SP, Brasil 2Laboratorio de Anatomía Comparada y Evolución de los Vertebrados. Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’, Av. Angel Gallardo 470 (1405), Buenos Aires, Argentina Received 23 April 2010; revised 5 April 2011; accepted for publication 18 April 2011 The cranial anatomy of Dinilysia patagonica, a terrestrial snake from the Upper Cretaceous of Argentina, is redescribed and illustrated, based on high-resolution X-ray computed tomography and better preparations made on previously known specimens, including the holotype. Previously unreported characters reinforce the intriguing mosaic nature of the skull of Dinilysia, with a suite of plesiomorphic and apomorphic characters with respect to extant snakes. Newly recognized plesiomorphies are the absence of the medial vertical flange of the nasal, lateral position of the prefrontal, lizard-like contact between vomer and palatine, floor of the recessus scalae tympani formed by the basioccipital, posterolateral corners of the basisphenoid strongly ventrolaterally projected, and absence of a medial parietal pillar separating the telencephalon and mesencephalon, amongst others. We also reinterpreted the structures forming the otic region of Dinilysia, confirming the presence of a crista circumfenes- tralis, which represents an important derived ophidian synapomorphy. Both plesiomorphic and apomorphic traits of Dinilysia are treated in detail and illustrated accordingly. Results of a phylogenetic analysis support a basal position of Dinilysia, as the sister-taxon to all extant snakes. -
International Code of Zoological Nomenclature
International Commission on Zoological Nomenclature INTERNATIONAL CODE OF ZOOLOGICAL NOMENCLATURE Fourth Edition adopted by the International Union of Biological Sciences The provisions of this Code supersede those of the previous editions with effect from 1 January 2000 ISBN 0 85301 006 4 The author of this Code is the International Commission on Zoological Nomenclature Editorial Committee W.D.L. Ride, Chairman H.G. Cogger C. Dupuis O. Kraus A. Minelli F. C. Thompson P.K. Tubbs All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying or otherwise), without the prior written consent of the publisher and copyright holder. Published by The International Trust for Zoological Nomenclature 1999 c/o The Natural History Museum - Cromwell Road - London SW7 5BD - UK © International Trust for Zoological Nomenclature 1999 Explanatory Note This Code has been adopted by the International Commission on Zoological Nomenclature and has been ratified by the Executive Committee of the International Union of Biological Sciences (IUBS) acting on behalf of the Union's General Assembly. The Commission may authorize official texts in any language, and all such texts are equivalent in force and meaning (Article 87). The Code proper comprises the Preamble, 90 Articles (grouped in 18 Chapters) and the Glossary. Each Article consists of one or more mandatory provisions, which are sometimes accompanied by Recommendations and/or illustrative Examples. In interpreting the Code the meaning of a word or expression is to be taken as that given in the Glossary (see Article 89). -
Snakes of the Siwalik Group (Miocene of Pakistan): Systematics and Relationship to Environmental Change
Palaeontologia Electronica http://palaeo-electronica.org SNAKES OF THE SIWALIK GROUP (MIOCENE OF PAKISTAN): SYSTEMATICS AND RELATIONSHIP TO ENVIRONMENTAL CHANGE Jason J. Head ABSTRACT The lower and middle Siwalik Group of the Potwar Plateau, Pakistan (Miocene, approximately 18 to 3.5 Ma) is a continuous fluvial sequence that preserves a dense fossil record of snakes. The record consists of approximately 1,500 vertebrae derived from surface-collection and screen-washing of bulk matrix. This record represents 12 identifiable taxa and morphotypes, including Python sp., Acrochordus dehmi, Ganso- phis potwarensis gen. et sp. nov., Bungarus sp., Chotaophis padhriensis, gen. et sp. nov., and Sivaophis downsi gen. et sp. nov. The record is dominated by Acrochordus dehmi, a fully-aquatic taxon, but diversity increases among terrestrial and semi-aquatic taxa beginning at approximately 10 Ma, roughly coeval with proxy data indicating the inception of the Asian monsoons and increasing seasonality on the Potwar Plateau. Taxonomic differences between the Siwalik Group and coeval European faunas indi- cate that South Asia was a distinct biogeographic theater from Europe by the middle Miocene. Differences between the Siwalik Group and extant snake faunas indicate sig- nificant environmental changes on the Plateau after the last fossil snake occurrences in the Siwalik section. Jason J. Head. Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, Washington, DC 20013-7012, USA. [email protected] School of Biological Sciences, Queen Mary, University of London, London, E1 4NS, United Kingdom. KEY WORDS: Snakes, faunal change, Siwalik Group, Miocene, Acrochordus. PE Article Number: 8.1.18A Copyright: Society of Vertebrate Paleontology May 2005 Submission: 3 August 2004. -
Forest Stewardship Workshop
Aquatic Invasives Workshop Presented by the: Central Florida Cooperative Invasive Species Management Area (CISMA), East Central Florida CISMA & Florida Forest Stewardship Program May 13, 2016; 8:30 am – 2:30 pm ET UF/IFAS Orange County Extension Office Many exotic plants are invasive weeds that form expanding populations on our landscape and waterways, making management a challenge. Some exotic animals have also become a problem for resource managers. The rapid and effective dispersal characteristics of these invaders make them extremely difficult to eliminate. This workshop will describe some of the more common and troublesome aquatic invasive exotic species in central Florida, current methods being used to manage them and opportunities to partner and get assistance. Tentative Agenda: 8:30 am Sign-in, meet & greet (finish refreshments before entering meeting room) 8:50 Welcome & introduction, Sherry Williams, Seminole County Natural Lands Program 9:00 Aquatic herbicides and application techniques, Dr. Stephen Enloe, UF/IFAS Center for Aquatic and Invasive Plants 9:50 Mosquito biology and disease, Ed Northey, Volusia County Mosquito Control 10:15 Algae, Michael Shaner, SePRO 10:40 Networking break 11:00 Ludwigia plant complex, Kelli Gladding, SePRO 11:25 Introduced aquatic herpetofauna in Florida, Dr. Steve Johnson, UF/IFAS Dept. of Wildlife Ecology and Conservation 11:50 Lunch 1:00 pm Hands-on plant and animal ID round-robin, all staff 2:30 Evaluation, CEUs, adjourn Funding for this workshop is provided by the USDA Forest Service through the Florida Department of Agriculture and Consumer Services Florida Forest Service, the Florida Sustainable Forestry Initiative Implementation Committee, Applied Aquatic Management, Inc., Aquatic Vegetation Control, Inc., Dow Chemical, Earth Balance, Florida’s Aquatic Preserves, Modica & Associates, Florida Aquatic Plant Management Society, and SePro. -
Fantassins Numero 32
FANTASSINS NUMERO 32 > SOMMAIRE CONTENTS < Editorial du C.E.M.A.T. - Editorial by the C.G.S .................................................................................................................. Général d’armée Bertrand RACT-MADOUX 2 Mot du commandant de l’école de l’infanterie - Foreword by the Commander of the School of Infantry ...................................Général de division Hervé WATTECAMPS 5 DOSSIER SPÉCIAL : Le tir dans l’infanterie Le tir dans l’infanterie - Shooting in the infantry ................................................................................................................................................Général Eric RECULE 7 Raisonner le tir par la trame des feux - Considering fires from the perspective of weapon arrays ............................................... Lieutenant-colonel François MARIOTTI 12 Du parcours de tir collectif... à la manœuvre interarmes avec tirs - From live firing exercises to live firing combined-arms manoeuvres ............... Colonel Marc CHRISTY 16 L’entraînement au tir au sein du bataillon d’Acier - Shooting practice with the « Steel battalion » ......................................................Lieutenant-colonel Christophe RICHARD 20 L’emploi du SGTIA dans le cadre d’une manœuvre interarmes à tirs réel : l’exercice CERCES Employing a company group (CG) during a combined arms manoeuvre with live fires : FTX CERCES .........................................Lieutenant-colonel Louis-Marie VALLANCON 28 Le tir dans l’infanterie britannique - Shooting in the British -
The Sclerotic Ring: Evolutionary Trends in Squamates
The sclerotic ring: Evolutionary trends in squamates by Jade Atkins A Thesis Submitted to Saint Mary’s University, Halifax, Nova Scotia in Partial Fulfillment of the Requirements for the Degree of Master of Science in Applied Science July, 2014, Halifax Nova Scotia © Jade Atkins, 2014 Approved: Dr. Tamara Franz-Odendaal Supervisor Approved: Dr. Matthew Vickaryous External Examiner Approved: Dr. Tim Fedak Supervisory Committee Member Approved: Dr. Ron Russell Supervisory Committee Member Submitted: July 30, 2014 Dedication This thesis is dedicated to my family, friends, and mentors who helped me get to where I am today. Thank you. ! ii Table of Contents Title page ........................................................................................................................ i Dedication ...................................................................................................................... ii List of figures ................................................................................................................. v List of tables ................................................................................................................ vii Abstract .......................................................................................................................... x List of abbreviations and definitions ............................................................................ xi Acknowledgements .................................................................................................... -
Opinion No. 82-811
TO BE PUBLISHED IN THE OFFICIAL REPORTS OFFICE OF THE ATTORNEY GENERAL State of California JOHN K. VAN DE KAMP Attorney General _________________________ : OPINION : No. 82-811 : of : APRI 28, 1983 : JOHN K. VAN DE KAMP : Attorney General : : JOHN T. MURPHY : Deputy Attorney General : : ________________________________________________________________________ THE HONORABLE ROBERT W. NAYLOR, A MEMBER OF THE CALIFORNIA ASSEMBLY, has requested an opinion on the following question: Does "python" as used in Penal Code section 653o to identify an endangered snake include "anaconda"? CONCLUSION As used in Penal Code section 653o to identify an endangered snake, "python" does not include "anaconda." 1 82-811 ANALYSIS Penal Code section 653o, subd. (a), provides as follows: "It is unlawful to import into this state for commercial purposes, to possess with intent to sell, or to sell within the state, the dead body, or any part or product thereof, of any alligator, crocodile, polar bear, leopard, ocelot, tiger, cheetah, jaguar, sable antelope, wolf (Canis lupus), zebra, whale, cobra, python, sea turtle, colobus monkey, kangaroo, vicuna, sea otter, free-roaming feral horse, dolphin or porpoise (Delphinidae), Spanish lynx, or elephant." "Any person who violates any provision of this section is guilty of a misdemeanor and shall be subject to a fine of not less than one thousand dollars ($1,000) and not to exceed five thousand dollars ($5,000) or imprisonment in the county jail for not to exceed six months, or both such fine and imprisonment, for each violation." (Emphasis added.) We are asked whether or not the term "python" in this statute includes "anaconda." Section 653o was enacted in 1970 (Stats. -
Bibliography and Scientific Name Index to Amphibians
lb BIBLIOGRAPHY AND SCIENTIFIC NAME INDEX TO AMPHIBIANS AND REPTILES IN THE PUBLICATIONS OF THE BIOLOGICAL SOCIETY OF WASHINGTON BULLETIN 1-8, 1918-1988 AND PROCEEDINGS 1-100, 1882-1987 fi pp ERNEST A. LINER Houma, Louisiana SMITHSONIAN HERPETOLOGICAL INFORMATION SERVICE NO. 92 1992 SMITHSONIAN HERPETOLOGICAL INFORMATION SERVICE The SHIS series publishes and distributes translations, bibliographies, indices, and similar items judged useful to individuals interested in the biology of amphibians and reptiles, but unlikely to be published in the normal technical journals. Single copies are distributed free to interested individuals. Libraries, herpetological associations, and research laboratories are invited to exchange their publications with the Division of Amphibians and Reptiles. We wish to encourage individuals to share their bibliographies, translations, etc. with other herpetologists through the SHIS series. If you have such items please contact George Zug for instructions on preparation and submission. Contributors receive 50 free copies. Please address all requests for copies and inquiries to George Zug, Division of Amphibians and Reptiles, National Museum of Natural History, Smithsonian Institution, Washington DC 20560 USA. Please include a self-addressed mailing label with requests. INTRODUCTION The present alphabetical listing by author (s) covers all papers bearing on herpetology that have appeared in Volume 1-100, 1882-1987, of the Proceedings of the Biological Society of Washington and the four numbers of the Bulletin series concerning reference to amphibians and reptiles. From Volume 1 through 82 (in part) , the articles were issued as separates with only the volume number, page numbers and year printed on each. Articles in Volume 82 (in part) through 89 were issued with volume number, article number, page numbers and year. -
Fantassins N°28 – Les Équipements De L'infanterie
FANTASSIN NUMERO 28 EAGLE 4x4 - 6x6 > SOMMAIRE CONTENTS < Eurosatory Une plateforme pour une famille multirôle Editorial ..................................................................................................................................................................................Général de division Bernard GUILLET 4 11-15Stand JuinHall 2012 C186 5 DOSSIER SPECIAL : LES EQUIPEMENTS DE L’INFANTERIE Le fantassin de France et son fusil - The French infantryman and his rifle ...............................................................................Capitaine Yann DOMENECH de CELLES 7 Le rôle du bureau PLANS de l’EMAT dans la conception et le développement des équipements de l’infanterie Role of the General Staff G3 Plans Division in the design and development of infantry equipment ....................................................................... Colonel Eric OZANNE 13 Scorpion étape 1 pour finaliser la transformation de l’infanterie - Scorpion phase 1: to finalize the transformation of the Infantry ................. Colonel Rémy CADAPEAUD 16 L’adaptation réactive pour les matériels de l’infanterie - Reactive adaptability for infantry equipment. .........................................................Colonel Jacques MIENVILLE 18 Le processus de développement des équipements de l’infanterie allemande - Developing German Infantry equipment ........................... Lieutenant-colonel Harald NEUMANN 22 Point de situation sur les équipements dans l’infanterie britannique - A situation update on the equipment of the -
THE ORIGIN and EVOLUTION of SNAKE EYES Dissertation
CONQUERING THE COLD SHUDDER: THE ORIGIN AND EVOLUTION OF SNAKE EYES Dissertation Presented in Partial Fulfillment for the Requirements for the Degree of Doctor of Philosophy in the Graduate School of The Ohio State University By Christopher L. Caprette, B.S., M.S. **** The Ohio State University 2005 Dissertation Committee: Thomas E. Hetherington, Advisor Approved by Jerry F. Downhower David L. Stetson Advisor The graduate program in Evolution, John W. Wenzel Ecology, and Organismal Biology ABSTRACT I investigated the ecological origin and diversity of snakes by examining one complex structure, the eye. First, using light and transmission electron microscopy, I contrasted the anatomy of the eyes of diurnal northern pine snakes and nocturnal brown treesnakes. While brown treesnakes have eyes of similar size for their snout-vent length as northern pine snakes, their lenses are an average of 27% larger (Mann-Whitney U test, p = 0.042). Based upon the differences in the size and position of the lens relative to the retina in these two species, I estimate that the image projected will be smaller and brighter for brown treesnakes. Northern pine snakes have a simplex, all-cone retina, in keeping with a primarily diurnal animal, while brown treesnake retinas have mostly rods with a few, scattered cones. I found microdroplets in the cone ellipsoids of northern pine snakes. In pine snakes, these droplets act as light guides. I also found microdroplets in brown treesnake rods, although these were less densely distributed and their function is unknown. Based upon the density of photoreceptors and neural layers in their retinas, and the predicted image size, brown treesnakes probably have the same visual acuity under nocturnal conditions that northern pine snakes experience under diurnal conditions.