Observation of Feeding Habit of the Asian Water Monitor, Varanus Salvator
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Dietary Behavior of the Mangrove Monitor Lizard (Varanus Indicus)
DIETARY BEHAVIOR OF THE MANGROVE MONITOR LIZARD (VARANUS INDICUS) ON COCOS ISLAND, GUAM, AND STRATEGIES FOR VARANUS INDICUS ERADICATION A THESIS SUBMITTED TO THE GRADUATE DIVISION OF THE UNIVERSITY OF HAWAI’I AT HILO IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN TROPICAL CONSERVATION BIOLOGY AND ENVIRONMENTAL SCIENCE MAY 2016 By Seamus P. Ehrhard Thesis Committee: William Mautz, Chairperson Donald Price Patrick Hart Acknowledgements I would like to thank Guam’s Department of Agriculture, the Division of Aquatic and Wildlife Resources, and wildlife biologist, Diane Vice, for financial assistance, research materials, and for offering me additional staffing, which greatly aided my fieldwork on Guam. Additionally, I would like to thank Dr. William Mautz for his consistent help and effort, which exceeded all expectations of an advisor, and without which I surely would have not completed my research or been inspired to follow my passion of herpetology to the near ends of the earth. 2 Abstract The mangrove monitor lizard (Varanus indicus), a large invasive predator, can be found on all areas of the 38.6 ha Cocos Island at an estimated density, in October 2011, of 6 V. Indicus per hectare on the island. Plans for the release of the endangered Guam rail (Gallirallus owstoni) on Cocos Island required the culling of V. Indicus, because the lizards are known to consume birds and bird eggs. Cocos Island has 7 different habitats; resort/horticulture, Casuarina forest, mixed strand forest, Pemphis scrub, Scaevola scrub, sand/open area, and wetlands. I removed as many V. Indicus as possible from the three principal habitats; Casuarina forest, mixed scrub forest, and a garbage dump (resort/horticulture) using six different trapping methods. -
Observations on Varanus S. Salvator in North Sulawesi
ARTICLES Biawak 1(2): 59-66 © 2007. International Varanid Interest Group Observations on Varanus s. salvator in North Sulawesi HAROLD F. DE LISLE P.O. Box 1975 Twentynine Palms, CA 92277, US [email protected] Abstract: Asian Water Monitors (Varanus s. salvator) are widespread on the main island of Sulawesi, Indonesia, but rather rare in the province of North Sulawesi because of human predation. This study documents observations on the daily behavior of a small coastal population over a two week period. Observations of aquatic behavior led to discussion of the possibility that this population is able to catch live fish in a particular coastal lagoon. Introduction The Asian Water Monitor (Varanus salvator salvator) is perhaps the most wide-spread of all varanids. It is found from Sri Lanka, northern India, Bangladesh, Burma, Vietnam and Hainan (China) through Malaysia east to the Indonesian islands of Sulawesi and Wetar (De Lisle, 1996). Its ability to colonize the remote islands of Malaysia and Indonesia might be due to its adaptability towards freshwater and saltwater (Traeholt, 1994a), and also its large size is an advantage, giving both the energy reserves and power to survive an extended sea voyage and a greater potential to actually achieve a landfall. Backwash from tsunamis could start this process frequently enough. Figures 1A and B. Remnant primary forest on North Sulawesi Biawak 2007 Vol. 1 No. 2 60 Figure 2. Coastal stream, North Sulawesi Figure 3. Coast of the Moluccan Sea In March 2001, a month was spent in North Sulawesi Province, Indonesia (island of Sulawesi) to observe the northeastern-most populations of the Asian Water Monitor (V. -
Iguanid and Varanid CAMP 1992.Pdf
CONSERVATION ASSESSMENT AND MANAGEMENT PLAN FOR IGUANIDAE AND VARANIDAE WORKING DOCUMENT December 1994 Report from the workshop held 1-3 September 1992 Edited by Rick Hudson, Allison Alberts, Susie Ellis, Onnie Byers Compiled by the Workshop Participants A Collaborative Workshop AZA Lizard Taxon Advisory Group IUCN/SSC Conservation Breeding Specialist Group SPECIES SURVIVAL COMMISSION A Publication of the IUCN/SSC Conservation Breeding Specialist Group 12101 Johnny Cake Ridge Road, Apple Valley, MN 55124 USA A contribution of the IUCN/SSC Conservation Breeding Specialist Group, and the AZA Lizard Taxon Advisory Group. Cover Photo: Provided by Steve Reichling Hudson, R. A. Alberts, S. Ellis, 0. Byers. 1994. Conservation Assessment and Management Plan for lguanidae and Varanidae. IUCN/SSC Conservation Breeding Specialist Group: Apple Valley, MN. Additional copies of this publication can be ordered through the IUCN/SSC Conservation Breeding Specialist Group, 12101 Johnny Cake Ridge Road, Apple Valley, MN 55124. Send checks for US $35.00 (for printing and shipping costs) payable to CBSG; checks must be drawn on a US Banlc Funds may be wired to First Bank NA ABA No. 091000022, for credit to CBSG Account No. 1100 1210 1736. The work of the Conservation Breeding Specialist Group is made possible by generous contributions from the following members of the CBSG Institutional Conservation Council Conservators ($10,000 and above) Australasian Species Management Program Gladys Porter Zoo Arizona-Sonora Desert Museum Sponsors ($50-$249) Chicago Zoological -
Incidence of Fish Hook Ingestion by Komodo Dragons
Biawak. 2008. 2(3): 121-123 © 2008 by International Varanid Interest Group Incidence of Fish Hook Ingestion by Komodo dragons TIM JESSOP1,2, JERI IMANSYAH2, DENI PURWANDANA2, ACHMAD ARIEFIANDY2 and DEVI S. OPAT3 1Department of Wildlife Conservation and Research, Zoos Victoria, PO Box 74 Parkville VIC 3052, Australia 2 Komodo Dragon Species Survival Program Indonesia, Denpasar, Bali, Indonesia 3 Komodo National Park, Labuan Bajo, Flores, NTT, Indonesia Correspondence to Tim Jessop e-mail: tjessop@ zoo.org.au The Komodo dragon (Varanus komodoensis), a large robust monitor lizard, persists on the 5 islands in Eastern Indonesia (Ciofi and de Boer 2004). The waters surrounding these islands are intensively utilized for marine resources and in particular line and net fishing are prolific. For other reptiles, particularly freshwater and marine turtles, incidental injury and mortality through ingestion of fishing hooks during routine foraging activities are not uncommon (Polovina et al. 2000). However, similar incidents of reptile by-catch in terrestrial species is poorly documented, even though many large lizards such as monitors are semi-aquatic, or cohabit and forage within coastal areas in which intense fishing activities persist. Here we report two incidents of ingestion of fishing hooks by Komodo dragons during routine monitoring of island populations between 2002 and 2006. Annual mark-recapture studies were conducted at 10 sites across 4 islands within Komodo National Park between 2002 and 2006 and resulted in 827 individual dragons captures. From this sample, 2 cases of fishhook ingestion were reported. The first case, comprised a small monitor (Animal ID: 00063A9978, 69.35 cm SVL, 7 kg) captured at Loh Buaya (8° 39’ 21.7” S; 119° 43’ 06.2” E) on Rinca Island and appeared to have occurred recently as the line protruding from its mouth was still relatively long and the nylon in good condition (Figure 1). -
AC31 Doc. 14.2
Original language: English AC31 Doc. 14.2 CONVENTION ON INTERNATIONAL TRADE IN ENDANGERED SPECIES OF WILD FAUNA AND FLORA ___________________ Thirty-first meeting of the Animals Committee Geneva (Switzerland), 13-17 July 2020 Interpretation and implementation matters Regulation of trade Non-detriment findings PUBLICATION OF A MANAGEMENT REPORT FOR COMMON WATER MONITORS (VARANUS SALVATOR) IN PENINSULAR MALAYSIA 1. This document has been submitted by Malaysia (Management Authorities of Peninsular Malaysia – Ministry of Energy and Natural Resources and Department of Wildlife and National Park Peninsular Malaysia).* Background 2. For the last 50 years, Malaysia has sustained a trade in the skins of Common Water Monitors (Varanus salvator), listed in Appendix II since 1975. In accordance of Article IV, paragraph 3, exports of the specimens of Appendix-II species must be monitored continuously and suitable measures to be taken to limit such exports in order to maintain such species throughout their range at a level consistent with their role in the ecosystems and well above the level at which they would qualify for Appendix I. 3. The CITES Scientific and Management Authorities of Peninsular Malaysia committed to improve monitoring and management systems for Varanus salvator in Malaysia, which has resulted in the management system published here (Annex). Objectives and overview of the Management System for Varanus salvator 4. The management report provides information on the biological attributes of V. salvator, recent population data findings in Peninsular Malaysia and the monitoring and management systems used to ensure its sustainable trade. 5. The main specific objectives of the management report are: a) To provide a tool to support wildlife management authorities in Malaysia in the application of CITES provisions such as Non-detriment findings (NDFs). -
Standardized Karyotype and Idiogram of Bengal Monitor Lizard, Varanus Bengalensis (Squamata, Varanidae)
© 2017 The Japan Mendel Society Cytologia 82(1) Special Issue: 75–82 Standardized Karyotype and Idiogram of Bengal Monitor Lizard, Varanus bengalensis (Squamata, Varanidae) Isara Patawang1, Alongklod Tanomtong2,5*, Nuntaporn Getlekha2,5, Sumalee Phimphan2,5, Krit Pinthong3 and Lamyai Neeratanaphan4,5 1 Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Muang 50200, Thailand 2 Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Muang 40002, Thailand 3 Department of Fundamental Science, Faculty of Science and Technology, Surindra Rajabhat University, Surin, Muang 32000, Thailand 4 Department of Environmental Science, Faculty of Science, Khon Kaen University, Khon Kaen, Muang 40002, Thailand 5 Research Group on Toxic Substances in Livestock and Aquatic Animals, Khon Kaen University, Khon Kaen, Muang 40002, Thailand Received July 10, 2015; accepted November 10, 2015 Summary The standardized karyotype and idiogram of the Bengal monitor lizard (Varanus bengalensis) from the Kalasin Province of Thailand were studied. Blood samples were taken from male and female lizards. The standard T-lymphocyte cell was cultured at 26°C for 96 h. The mitotic chromosomes were harvested by colchi- cine-hypotonic-fixation-air drying technique. Conventional staining, Ag-NOR banding and C-banding techniques were applied to stain the chromosome with 20% Giemsa’s solution. The results showed that the number of dip- loid chromosome was 2n=40, while the fundamental number (NF) was 54 in males and 55 in females. The types of macrochromosomes were 4 large metacentric, 4 small metacentric, 6 small submetacentric, 2 small telocentric macrochromosomes and 24 microchromosomes. The Z chromosome is the small telocentric chromosome, while the W chromosome is the small metacentric chromosome. -
Ecosystem Engineering by Deep‐Nesting Monitor Lizards
The Scientific Naturalist Ecology, 102(4), 2021, e03271 © 2020 by the Ecological Society of America (Whitford 1998), and these burrows have higher levels of labile carbon and mineralizable nitrogen than surface soils (James and Eldridge 2007, James et al. 2009). Herein we reveal that two species of large monitor lizards can serve a significant role as ecosystem engineers Ecosystem engineering by deep- via their unique nesting behavior and remarkable com- nesting monitor lizards munal nesting warrens. The yellow-spotted monitor lizard, Varanus panoptes 1,4 2 3 J. S EAN DOODY, KARI F. S OENNICHSEN, HUGH JAMES, (Fig. 1, inset), is a large lizard, up to 1.4 m in length, 3 2,3 COLIN MCHENRY AND SIMON CLULOW that occupies riparian areas and floodplains in tropical Australia, a landscape where reptiles often dominate the Manuscript received 20 August 2020; revised 2 October 2020; top of the food web. Despite its size, its biology is little accepted 26 October 2020. 1Department of Integrative Biology, University of South known, partly because its home in northern Australia is Florida–St. Petersburg Campus, St. Petersburg, Florida, 33701 roughly the size of Europe but with less than three mil- USA. lion people. Large males are bold and approachable, but 2Department of Biological Sciences, Macquarie University, the smaller females and female-sized males are secretive. Sydney, New South Wales 2109 Australia. Over the last decade or so, however, our research team 3Department of Environmental Science and Management, has pried open a treasure trove of natural history infor- University of Newcastle, Callaghan, New South Wales 2308 mation about this enigmatic species. -
Varanus Doreanus) in Australia
BIAWAK Journal of Varanid Biology and Husbandry Volume 11 Number 1 ISSN: 1936-296X On the Cover: Varanus douarrha The individuals depicted on the cover and inset of this issue represent a recently redescribed species of monitor lizard, Varanus douarrha (Lesson, 1830), which origi- nates from New Ireland, in the Bismark Archipelago of Papua New Guinea. Although originally discovered and described by René Lesson in 1830, the holotype was lost on its way to France when the ship it was traveling on became shipwrecked at the Cape of Good Hope. Since then, without a holotype for comparitive studies, it has been assumed that the monitors on New Ireland repre- sented V. indicus or V. finschi. Recent field investiga- tions by Valter Weijola in New Ireland and the Bismark Archipelago and phylogenetic analyses of recently col- lected specimens have reaffirmed Lesson’s original clas- sification of this animal as a distinct species. The V. douarrha depicted here were photographed by Valter Weijola on 17 July and 9 August 2012 near Fis- soa on the northern coast of New Ireland. Both individu- als were found basking in coconut groves close to the beach. Reference: Weijola, V., F. Kraus, V. Vahtera, C. Lindqvist & S.C. Donnellan. 2017. Reinstatement of Varanus douarrha Lesson, 1830 as a valid species with comments on the zoogeography of monitor lizards (Squamata: Varanidae) in the Bismarck Archipelago, Papua New Guinea. Australian Journal of Zoology 64(6): 434–451. BIAWAK Journal of Varanid Biology and Husbandry Editor Editorial Review ROBERT W. MENDYK BERND EIDENMÜLLER Department of Herpetology Frankfurt, DE Smithsonian National Zoological Park [email protected] 3001 Connecticut Avenue NW Washington, DC 20008, US RUSTON W. -
Varanus Macraei
BIAWAK Journal of Varanid Biology and Husbandry Volume 13 Number 2 ISSN: 1936-296X On the Cover: Varanus macraei The Blue tree monitors, Varanus mac- raei depicted on the cover and inset of this issue were hatched on 14 No- vember 2019 at Bristol Zoo Gardens (BZG) and are the first of their spe- cies to hatch at a UK zoological in- stitution. Two live offspring from an original clutch of four eggs hatched after 151 days of incubation at a tem- perature of 30.5 °C. The juveniles will remain on dis- play at BZG until they are eventually transferred to other accredited Euro- pean Association of Zoos & Aquari- ums (EAZA) institutions as part of the zoo breeding programme. Text and photographs by Adam Davis. BIAWAK Journal of Varanid Biology and Husbandry Editor Editorial Review ROBERT W. MENDYK BERND EIDENMÜLLER Department of Herpetology Frankfurt, DE Smithsonian National Zoological Park [email protected] 3001 Connecticut Avenue NW Washington, DC 20008, US RUston W. Hartdegen [email protected] Department of Herpetology Dallas Zoo, US Department of Herpetology [email protected] Audubon Zoo 6500 Magazine Street TIM JESSOP New Orleans, LA 70118, US Department of Zoology [email protected] University of Melbourne, AU [email protected] Associate Editors DAVID S. KIRSHNER Sydney Zoo, AU DANIEL BENNETT [email protected] PO Box 42793 Larnaca 6503, CY JEFFREY M. LEMM [email protected] San Diego Zoo Institute for Conservation Research Zoological Society of San Diego, US MICHAEL Cota [email protected] Natural History Museum National Science Museum, Thailand LAURENCE PAUL Technopolis, Khlong 5, Khlong Luang San Antonio, TX, US Pathum Thani 12120, TH [email protected] [email protected] SAMUEL S. -
Conservation Plan of Pavo Cristatus (Indian Peafowl)
Species Conservation Plan of Pavo cristatus (Indian Peafowl) & Varanus bengalensis (Indian Monitor Lizard) For “TECHNICAL GRADE PESTICIDES MANUFACTURING UNIT” at PLOT NO 3206/B, & 3206/A, GIDC, PIRAMAN, ANKLESHWAR, BHARUCH, GUJARAT PROJECT PROPONENT: - M/s BHARAT PRODUCTS LIMITED (E-17& 18, DSIIDC Industrial Complex New Delhi-110041, India) Contact Details: Mr. Shambhu Nath Upadhyay Email: [email protected] Phone: +91-9818236022 ENVIRONMENTAL CONSULTANT M/S SHIVALIK SOLID WASTE MANAGEMENT LTD. NABET Registered List ‘A’ of Accredited Consultant Organizations / Rev. 76, 06th May, 2019, at Sr. No. 141) ((UPL Enviro Infrastructure Group Co.),2nd floor, SCO 20-21, near Hotel Dolphin, Zirakpur, Punjab-140604 Email id: [email protected] Phone: +91-9316028131 ASSOCIATE ENVIRONMENTAL CONSULTANT M/s Perfact Enviro Solution Pvt. Ltd. NABET Registered List ‘A’ of Accredited Consultant Organizations / Rev. 76, 06th May, 2019, at Sr. No. 119) (5th Floor, NN Mall, Mangalam Palace, Sector 3, Rohini, New Delhi-110085) Email id: [email protected] Phone: 011-49281360 Contents Chapter 1: Introduction ................................................................................................................................ 2 1.1 Details of the study area ..................................................................................................................... 2 1.2 Details of Ecological and Biodiversity Study ....................................................................................... 3 1.3 Principles of Wildlife Conservation -
Saint Martin's Biological Survey Report, Bangladesh
ii BOBLME-2015-Ecology-48 The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of Food and Agriculture Organization of the United Nations concerning the legal and development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The BOBLME Project encourages the use of this report for study, research, news reporting, criticism or review. Selected passages, tables or diagrams may be reproduced for such purposes provided acknowledgment of the source is included. Major extracts or the entire document may not be reproduced by any process without the written permission of the BOBLME Project Regional Coordinator. BOBLME contract: FAOBGDLOA2014-019 For bibliographic purposes, please reference this publication as: BOBLME (2015) Saint Martin’s biological survey report, Bangladesh. BOBLME-2015-Ecology-48 ii Saint Martin’s biological survey report, Bangladesh Saint Martin’s biological survey report (Fauna and flora checklist) Under Strengthening National Capacity on Managing Marine Protected Areas (MPA) in Bangladesh (Second part of the BOBLME support in developing the framework for establishing MPA in Bangladesh) By Save Our Sea (Technical partner of the project) 49/1 Babar road, Block B, Mohammadpur, Dhaka 1207, Bangladesh. www.saveoursea.social, [email protected] +880-2-9112643 +880-161-4870997 Submitted to IUCN, International Union for Conservation of Nature and Natural -
Pressing Problems: Distribution, Threats, and Conservation Status of the Monitor Lizards (Varanidae: Varanus Spp.) of Southeast
March 2013 Open Access Publishing Volume 8, Monograph 3 The Southeast Asia and Indo-Australian archipelago holds 60% of the varanid global diversity. The major threats to varanids in this region include habitat destruction, international commercialism, and human consumption. Pressing Problems: Distribution, Threats, and Conservation Status of the Monitor Lizards (Varanidae: Varanus spp.) of Southeast Asia and the Indo-Australian Archipelago Monograph 3. André Koch, Thomas Ziegler, Wolfgang Böhme, Evy Arida and Mark Auliya ISSN: 1931-7603 Published in Partnership with: Indexed by: Zoological Record, Scopus, Current Contents / Agriculture, Biology & Environmental Sciences, Journal Citation Reports, Science Citation Index Extended, EMBiology, Biology Browser, Wildlife Review Abstracts, Google Scholar, and is in the Directory of Open Access Journals. PRESSING PROBLEMS: DISTRIBUTION, THREATS, AND CONSERVATION STATUS OF THE MONITOR LIZARDS (VARANIDAE: VARANUS SPP.) OF SOUTHEAST ASIA AND THE INDO-AUSTRALIAN ARCHIPELAGO MONOGRAPH 3. 1 2 1 3 4 ANDRÉ KOCH , THOMAS ZIEGLER , WOLFGANG BÖHME , EVY ARIDA , AND MARK AULIYA 1Zoologisches Forschungsmuseum Alexander Koenig & Leibniz Institute for Animal Biodiversity, Section of Herpetology, Adenauerallee 160, 53113 Bonn, Germany, email: [email protected] 2AG Zoologischer Garten Köln, Riehler Straße 173, 50735 Köln, Germany 3Museum Zoologicum Bogoriense, Jl. Raya Bogor km 46, 16911 Cibinong, Indonesia 4Helmholtz Centre for Environmental Research – UFZ, Department of Conservation Biology, Permoserstr. 15, 04318 Leipzig, Germany Copyright © 2013. André Koch. All Rights Reserved. Please cite this monograph as follows: Koch, André, Thomas Ziegler, Wolfgange Böhme, Evy Arida, and Mark Auliya. 2013. Pressing Problems: Distribution, threats, and conservation status of the monitor lizards (Varanidae: Varanus spp.) of Southeast Asia and the Indo-Australian Archipelago.