Additions to the Snake Fauna of Southern Laos
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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. -
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. -
ONEP V09.Pdf
Compiled by Jarujin Nabhitabhata Tanya Chan-ard Yodchaiy Chuaynkern OEPP BIODIVERSITY SERIES volume nine OFFICE OF ENVIRONMENTAL POLICY AND PLANNING MINISTRY OF SCIENCE TECHNOLOGY AND ENVIRONMENT 60/1 SOI PIBULWATTANA VII, RAMA VI RD., BANGKOK 10400 THAILAND TEL. (662) 2797180, 2714232, 2797186-9 FAX. (662) 2713226 Office of Environmental Policy and Planning 2000 NOT FOR SALE NOT FOR SALE NOT FOR SALE Compiled by Jarujin Nabhitabhata Tanya Chan-ard Yodchaiy Chuaynkern Office of Environmental Policy and Planning 2000 First published : September 2000 by Office of Environmental Policy and Planning (OEPP), Thailand. ISBN : 974–87704–3–5 This publication is financially supported by OEPP and may be reproduced in whole or in part and in any form for educational or non–profit purposes without special permission from OEPP, providing that acknowledgment of the source is made. No use of this publication may be made for resale or for any other commercial purposes. Citation : Nabhitabhata J., Chan ard T., Chuaynkern Y. 2000. Checklist of Amphibians and Reptiles in Thailand. Office of Environmental Policy and Planning, Bangkok, Thailand. Authors : Jarujin Nabhitabhata Tanya Chan–ard Yodchaiy Chuaynkern National Science Museum Available from : Biological Resources Section Natural Resources and Environmental Management Division Office of Environmental Policy and Planning Ministry of Science Technology and Environment 60/1 Rama VI Rd. Bangkok 10400 THAILAND Tel. (662) 271–3251, 279–7180, 271–4232–8 279–7186–9 ext 226, 227 Facsimile (662) 279–8088, 271–3251 Designed & Printed :Integrated Promotion Technology Co., Ltd. Tel. (662) 585–2076, 586–0837, 913–7761–2 Facsimile (662) 913–7763 2 1. -
Cobra Risk Assessment
Invasive animal risk assessment Biosecurity Queensland Agriculture Fisheries and Department of Cobra (all species) Steve Csurhes and Paul Fisher First published 2010 Updated 2016 Pest animal risk assessment © State of Queensland, 2016. The Queensland Government supports and encourages the dissemination and exchange of its information. The copyright in this publication is licensed under a Creative Commons Attribution 3.0 Australia (CC BY) licence. You must keep intact the copyright notice and attribute the State of Queensland as the source of the publication. Note: Some content in this publication may have different licence terms as indicated. For more information on this licence visit http://creativecommons.org/licenses/ by/3.0/au/deed.en" http://creativecommons.org/licenses/by/3.0/au/deed.en Photo: Image from Wikimedia Commons (this image is reproduced under the terms of a GNU Free Documentation License) Invasive animal risk assessment: Cobra 2 Contents Summary 4 Introduction 5 Identity and taxonomy 5 Taxonomy 3 Description 5 Diet 5 Reproduction 6 Predators and diseases 6 Origin and distribution 7 Status in Australia and Queensland 8 Preferred habitat 9 History as a pest elsewhere 9 Uses 9 Pest potential in Queensland 10 Climate match 10 Habitat suitability 10 Broad natural geographic range 11 Generalist diet 11 Venom production 11 Disease 11 Numerical risk analysis 11 References 12 Attachment 1 13 Invasive animal risk assessment: Cobra 3 Summary The common name ‘cobra’ applies to 30 species in 7 genera within the family Elapidae, all of which can produce a hood when threatened. All cobra species are venomous. As a group, cobras have an extensive distribution over large parts of Africa, Asia, Malaysia and Indonesia. -
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. -
50099-003: Fourth Greater Mekong Subregion Corridor Towns
Environmental Monitoring Report 1st Semestral Report May 2020 Lao PDR: Fourth Greater Mekong Subregion Corridor Towns Development Project Prepared by the Project Coordination Unit of Department of Housing and Urban Planning for the Ministry of Public Works and Transport, Lao PDR and the Asian Development Bank. This environmental monitoring report is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. Lao People’s Democratic Republic Peace Independence Democracy Unity Prosperity Ministry of Public Works and Transport Department of Housing and Urban Planning Fourth Greater Mekong Sub-Region Corridor Towns Development Project (ADB Grant No. 0606) Semi-Annual Environmental Safeguard Monitoring Report March – December 2019 Prepared by the Project Coordination Unit of Department of Housing and Urban Planning for the Ministry of Public Works and Transports and the Asian Development Bank. NOTE: In this report, "$" refers to US Dollars This environmental safeguard monitoring report is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. -
Molecular Evolution of Three-Finger Toxins in the Long-Glanded Coral Snake Species Calliophis Bivirgatus
toxins Article Electric Blue: Molecular Evolution of Three-Finger Toxins in the Long-Glanded Coral Snake Species Calliophis bivirgatus Daniel Dashevsky 1,2 , Darin Rokyta 3 , Nathaniel Frank 4, Amanda Nouwens 5 and Bryan G. Fry 1,* 1 Venom Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072, Australia; [email protected] 2 Australian National Insect Collection, Commonwealth Science and Industry Research Organization, Canberra, ACT 2601, Australia 3 Department of Biological Sciences, Florida State University, Tallahassee, FL 24105, USA; [email protected] 4 MToxins Venom Lab, 717 Oregon Street, Oshkosh, WI 54902, USA; [email protected] 5 School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD 4072, Australia; [email protected] * Correspondence: [email protected], Tel.: +61-7-336-58515 Abstract: The genus Calliophis is the most basal branch of the family Elapidae and several species in it have developed highly elongated venom glands. Recent research has shown that C. bivirgatus has evolved a seemingly unique toxin (calliotoxin) that produces spastic paralysis in their prey by acting on the voltage-gated sodium (NaV) channels. We assembled a transcriptome from C. bivirgatus to investigate the molecular characteristics of these toxins and the venom as a whole. We find strong confirmation that this genus produces the classic elapid eight-cysteine three-finger toxins, that δ-elapitoxins (toxins that resemble calliotoxin) are responsible for a substantial portion of the venom composition, and that these toxins form a distinct clade within a larger, more diverse clade of C. bivirgatus three-finger toxins. This broader clade of C. -
Conservation of Amphibians and Reptiles in Indonesia: Issues and Problems
Copyright: © 2006 Iskandar and Erdelen. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and repro- Amphibian and Reptile Conservation 4(1):60-87. duction in any medium, provided the original author and source are credited. DOI: 10.1514/journal.arc.0040016 (2329KB PDF) The authors are responsible for the facts presented in this article and for the opinions expressed there- in, which are not necessarily those of UNESCO and do not commit the Organisation. The authors note that important literature which could not be incorporated into the text has been published follow- ing the drafting of this article. Conservation of amphibians and reptiles in Indonesia: issues and problems DJOKO T. ISKANDAR1 * AND WALTER R. ERDELEN2 1School of Life Sciences and Technology, Institut Teknologi Bandung, 10, Jalan Ganesa, Bandung 40132 INDONESIA 2Assistant Director-General for Natural Sciences, UNESCO, 1, rue Miollis, 75732 Paris Cedex 15, FRANCE Abstract.—Indonesia is an archipelagic nation comprising some 17,000 islands of varying sizes and geologi- cal origins, as well as marked differences in composition of their floras and faunas. Indonesia is considered one of the megadiversity centers, both in terms of species numbers as well as endemism. According to the Biodiversity Action Plan for Indonesia, 16% of all amphibian and reptile species occur in Indonesia, a total of over 1,100 species. New research activities, launched in the last few years, indicate that these figures may be significantly higher than generally assumed. Indonesia is suspected to host the worldwide highest numbers of amphibian and reptiles species. -
Baseline Report Xe Champhone Wetland, Champhone and Xonbuly Districts, Savannakhet Province, Lao PDR
Baseline Report Xe Champhone Wetland, Champhone and Xonbuly Districts, Savannakhet Province, Lao PDR MEKONG WATER DIALOGUES 0 June 2011 The designation of geographical Published by: IUCN, Gland, Cover Photo: Turtle Pond at ban entities in this publication, and Switzerland, and Vientiane, Lao Donedeng, Xe Champhone the presentation of the material, PDR. Wetland, IUCN Lao PDR do not imply the expression of any opinion whatsoever on the Copyright: © 2011 International Layout by: Charlotte Hicks part of IUCN or The Ministry for Union for Conservation of Nature Foreign Affairs of Finland and Natural Resources Produced by: IUCN Lao PDR concerning the legal status of any Country Office country, territory, or area, or of its Reproduction of this publication authorities, or concerning the for educational or other non- Funded by: The Ministry for delimitation of its frontiers or commercial purposes is Foreign Affairs of Finland and boundaries. authorized without written IUCN permission from the copyright The views expressed in this holder provided the source is fully Available from: publication do not necessarily acknowledged. IUCN reflect those of IUCN or The Lao PDR Country Office Ministry for Foreign Affairs of Reproduction of this publication PO Box 4340 Finland. for resale or other commercial 082/01 Fa Ngum Rd purposes is prohibited without Ban Wat Chan, This report is a summary of prior written permission of the Vientiane, Lao PDR research implemented in 2011 copyright holder. Tel: +856-21-216401 under the Mekong Water Fax: +856-21-216127 Dialogues, facilitated by IUCN. Citation: IUCN (2011). Baseline Web: www.iucn.org/lao No warranty as to the accuracy or Report: Xe Cha,phone Wetland, completeness of this information Champhone and Xonbuly is given and no responsibility is Districts, Savannakhet Province, accepted by IUCN or its Lao PDR, Mekong Water employees for any loss or Dialogues Project. -
A Preliminary Annotated Checklist of the Amphibians and Reptiles of the Kulen Promtep Wildlife Sanctuary in Northern Cambodia
Asian Herpetological Research 2013, 4(1): 36–55 DOI: 10.3724/SP.J.1245.2013.00036 A Preliminary Annotated Checklist of the Amphibians and Reptiles of the Kulen Promtep Wildlife Sanctuary in Northern Cambodia Timo HARTMANN1*, Flora IHLOW1*, Sarah EDWARDS2, SOVATH Sothanin3, Markus HANDSCHUH4 and Wolfgang BÖHME1 1 Zoologisches Forschungsmuseum Alexander Koenig (ZFMK), Adenauerallee 160, 53113 Bonn, Germany 2 Frontier Cambodia, 390, Sangkat Boeung Keng Kang III, Khan Chamkarmon, Phnom Penh, Cambodia 3 Department of National Parks, Ministry of Environment (MoE), 48, Samdech Preah Sihanouk, Tonle Bassac, Khan Chamkarmorn, Phnom Penh, Cambodia 4 Angkor Centre for Conservation of Biodiversity (ACCB), Kbal Spean, Phnom Kulen National Park, Siem Reap, Cambodia Abstract We present the first herpetological checklist for the Kulen Promtep Wildlife Sanctuary in northern Cambodia, with records of 22 species of amphibians and 33 species of reptiles belonging to 44 genera in 22 families. The checklist includes three species (Ingerophrynus macrotis, Micryletta inornata, Scincella melanosticta) which in Cambodia were formerly only known to occur in the Cardamom Mountains in the southwest of the country. Our findings highlight the importance of countrywide herpetological baseline surveys in lowland habitats. Keywords Amphibia, Reptilia, Kulen Promtep Wildlife Sanctuary, Cambodia, distribution, range extension, taxonomy 1. Introduction 2011; Rowley et al., 2010; Stuart et al., 2006, 2010). Herpetological field work focussing on lowlands and In addition to historical compilations (Bourret, 1941, low-lying hills of northern Central Cambodia is still very 1942; Saint Girons, 1972), recent field surveys greatly little (Bezuijen et al., 2009; Hartmann et al., 2009, 2010, improved the knowledge on Cambodia’s herpetofauna. -
Pakse Lao People's Democratic Republic
Pakse Lao People’s Democratic Republic Climate Change Vulnerability Assessment Pakse, Lao People’s Democratic Republic Climate Change Vulnerability Assessment Pakse, Lao People’s Democratic Republic - Climate Change Vulnerability Assessment Copyright © United Nations Human Settlements Programme (UN-Habitat) First edition 2014 United Nations Human Settlements Programme P.O. Box 30030, Nairobi 00100, Kenya E-mail: [email protected] www.unhabitat.org HS Number: HS/028/14E ISBN Number (Series): 978-92-1-132400-6 ISBN Number (Volume): 978-92-1-132617-8 DISCLAIMER The designations employed and the presentation of material in this document do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries, or regarding its economic system or degree of development. The analysis conclusions and recommendations of this publication do not necessarily reflect the views of the United Nations Human Settlements Programme or its Governing Council. Cover photo © Alyssa Grinberg ACKNOWLEDGEMENTS Principal Author: Edward Allen Contributing Authors: Aurelie Phimmasone, James Huggins, Liam Fee Reviewers: Bernhard Barth, Alyssa Grinberg, Avi Sarkar Summarised by: Ian Barnes Editor: Ian Barnes Design and Layout: Kenan Mogultay and Deepanjana Chakravarti Contents 01 Introduction 01 1.1 Cities and Climate Change Initiative ...................... 01 1.2 UN-Habitat’s Cities And Climate Change Initiative ...................... 01 02 Overview of the City 02 2.1 Pakse: Overview ...................... 02 2.2 Economy ...................... 03 2.3 Gender ...................... 03 2.4 Governance ...................... 04 03 City-Wide Vulnerability - Scoping Exposure, Sensitivity and Adaptive Capacity 05 3.1 Assessment Framework ...................... -
Cranial Kinesis in Lepidosaurs: Skulls in Motion
Topics in Functional and Ecological Vertebrate Morphology, pp. 15-46. P. Aerts, K. D’Août, A. Herrel & R. Van Damme, Eds. © Shaker Publishing 2002, ISBN 90-423-0204-6 Cranial Kinesis in Lepidosaurs: Skulls in Motion Keith Metzger Department of Anatomical Sciences, Stony Brook University, USA. Abstract This chapter reviews various aspects of cranial kinesis, or the presence of moveable joints within the cranium, with a concentration on lepidosaurs. Previous studies tend to focus on morphological correlates of cranial kinesis, without taking into account experimental evidence supporting or refuting the presence of the various forms of cranial kinesis in these taxa. By reviewing experimental and anatomical evidence, the validity of putative functional hypotheses for cranial kinesis in lepidosaurs is addressed. These data are also considered with respect to phylogeny, as such an approach is potentially revealing regarding the development of various forms of cranial kinesis from an evolutionary perspective. While existing evidence does not allow for events leading to the origin of cranial kinesis in lepidosaurs to be clearly understood at the present time, the potential role of exaptation in its development for specific groups (i.e., cordylids, gekkonids, varanids) is considered here. Directions for further research include greater understanding of the distribution of cranial kinesis in lepidosaurs, investigation of intraspecific variation of this feature (with a focus on ontogenetic factors and prey properties as variables which may influence the presence of kinesis), and continued study of the relationship between experimentally proven observation of cranial kinesis and cranial morphology. Key words: cranial kinesis, lepidosaur skull, functional morphology. Introduction Cranial kinesis, or the presence of moveable joints within the cranium, has been a subject of considerable interest to researchers for more than a century (for references see Bock, 1960; Frazzetta, 1962; Smith, 1982).