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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. -
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. -
Blumgart Et Al 2017- Herpetological Survey Nosy Komba
Journal of Natural History ISSN: 0022-2933 (Print) 1464-5262 (Online) Journal homepage: http://www.tandfonline.com/loi/tnah20 Herpetological diversity across intact and modified habitats of Nosy Komba Island, Madagascar Dan Blumgart, Julia Dolhem & Christopher J. Raxworthy To cite this article: Dan Blumgart, Julia Dolhem & Christopher J. Raxworthy (2017): Herpetological diversity across intact and modified habitats of Nosy Komba Island, Madagascar, Journal of Natural History, DOI: 10.1080/00222933.2017.1287312 To link to this article: http://dx.doi.org/10.1080/00222933.2017.1287312 Published online: 28 Feb 2017. Submit your article to this journal Article views: 23 View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=tnah20 Download by: [BBSRC] Date: 21 March 2017, At: 02:56 JOURNAL OF NATURAL HISTORY, 2017 http://dx.doi.org/10.1080/00222933.2017.1287312 Herpetological diversity across intact and modified habitats of Nosy Komba Island, Madagascar Dan Blumgart a, Julia Dolhema and Christopher J. Raxworthyb aMadagascar Research and Conservation Institute, BP 270, Hellville, Nosy Be, Madagascar; bDivision of Vertebrate Zoology, American, Museum of Natural History, New York, NY, USA ABSTRACT ARTICLE HISTORY A six month herpetological survey was undertaken between March Received 16 August 2016 and September 2015 on Nosy Komba, an island off of the north- Accepted 17 January 2017 west coast of mainland Madagascar which has undergone con- KEYWORDS fi siderable anthropogenic modi cation. A total of 14 species were Herpetofauna; conservation; found that have not been previously recorded on Nosy Komba, Madagascar; Nosy Komba; bringing the total island diversity to 52 (41 reptiles and 11 frogs). -
Ecol 483/583 – Herpetology Lab 3: Amphibian Diversity 2: Anura Spring 2010
Ecol 483/583 – Herpetology Lab 3: Amphibian Diversity 2: Anura Spring 2010 P.J. Bergmann & S. Foldi (Modified from Bonine & Foldi 2008) Lab objectives The objectives of today’s lab are to: 1. Familiarize yourself with Anuran diversity. 2. Learn to identify local frogs and toads. 3. Learn to use a taxonomic key. Today’s lab is the second in which you will learn about amphibian diversity. We will cover the Anura, or frogs and toads, the third and final clade of Lissamphibia. Tips for learning the material Continue what you have been doing in previous weeks. Examine all of the specimens on display, taking notes, drawings and photos of what you see. Attempt to identify the local species to species and the others to their higher clades. Quiz each other to see which taxa are easy for you and which ones give you troubles, and then revisit the difficult ones. Although the Anura has a conserved body plan – all are rather short and rigid bodied, with well- developed limbs, there is an incredible amount of diversity. Pay close attention to some of the special external anatomical traits that characterize the groups of frogs you see today. You will also learn to use a taxonomic key today. This is an important tool for correctly identifying species, especially when they are very difficult to distinguish from other species. 1 Ecol 483/583 – Lab 3: Anura 2010 Exercise 1: Anura diversity General Information Frogs are a monophyletic group comprising the order Anura. Salientia includes both extant and extinct frogs. Frogs have been around since the Triassic (~230 ma). -
The Freshwater Crab Liberonautes Latidactylus (De Man, 1903) Preys on Adult Allen’S Giant Frog, Conraua Alleni (Barbour and Loveridge, 1927)
Herpetology Notes, volume 12: 1073-1076 (2019) (published online on 29 October 2019) The freshwater crab Liberonautes latidactylus (de Man, 1903) preys on adult Allen’s Giant Frog, Conraua alleni (Barbour and Loveridge, 1927) Marvin Schäfer1,*, Joseph Doumbia2, and Mark-Oliver Rödel1 Post-metamorphic anuran amphibians are preyed therein), the role of freshwater crabs as predators is upon by many vertebrates (reviewed by Toledo et less well documented, but particularly for frogs, might al., 2007) and invertebrate predators (Toledo, 2005; be underrated. Freshwater crabs are known to feed on Wells, 2007). Amongst invertebrates, spiders are eggs (Hayes, 1983), tadpoles (Gray and Christy, 2000), most frequently listed (for a recent review concerning juvenile (Affonso and Signorelli, 2011) and adult African examples, see Babangenge et al., 2019), but frogs (Tsuji, 2005; Rosa et al., 2014; Wehrtmann et al., unusual anuran specialists like the carabid beetles 2019). Hence, all anuran life stages are potential prey Epomis have become known as well (Wizen and Gasith, of freshwater crabs. Interestingly, the ability to hunt 2011). Although Diesel (1989) reports an example seems to decrease in freshwater crabs exceeding 25 mm of a tree-hole breeding crab, occasionally preying on of carapace width. Large individuals are supposed to be anuran eggs and tadpoles, crustaceans are only rarely less agile, and hence less effective in capturing elusive mentioned as amphibian predators. Toledo (2005) only prey (Williams, 1962; Williams, 1965; Dobson, 2004). lists one species of decapod crab as a predator of post- Consequently, one might assume that larger and agile metamorphic anurans. More recently, Pyke et al. -
Sequencing of Mitochondrial DNA with Long Repetitive Regions and Detection of the Frog Lineages of Large Mt Genome Showing Reduction of Purifying Selection
Prime Archives in Genetics: 2nd Edition Book Chapter Sequencing of Mitochondrial DNA with Long Repetitive Regions and Detection of the Frog Lineages of Large mt Genome Showing Reduction of Purifying Selection Ryosuke Kakehashi1, Keitaro Hemmi2, Chiaki Kambayashi1 and Atsushi Kurabayashi1* 1Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, Japan 2Amphibian Research Center, Hiroshima University, Japan *Corresponding Author: Atsushi Kurabayashi, Faculty of Bio- Science, Nagahama Institute of Bio-Science and Technology, Japan Published July 12, 2021 This Book Chapter is a republication of an article published by Atsushi Kurabayashi, et al. at International Journal of Genomics in January 2020. (Keitaro Hemmi, Ryosuke Kakehashi, Chiaki Kambayashi, Louis Du Preez, Leslie Minter, Nobuaki Furuno, Atsushi Kurabayashi. Exceptional Enlargement of the Mitochondrial Genome Results from Distinct Causes in Different Rain Frogs (Anura: Brevicipitidae: Breviceps). International Journal of Genomics. Volume 2020, Article ID 6540343, 12 pages. https://doi.org/10.1155/2020/6540343) How to cite this book chapter: Ryosuke Kakehashi, Keitaro Hemmi, Chiaki Kambayashi, Atsushi Kurabayashi. Sequencing of Mitochondrial DNA with Long Repetitive Regions and Detection of the Frog Lineages of Large mt Genome Showing Reduction of Purifying Selection. In: Fekadu Gadissa, editor. Prime Archives in Genetics: 2nd Edition. Hyderabad, India: Vide Leaf. 2021. 1 www.videleaf.com Prime Archives in Genetics: 2nd Edition © The Author(s) 2021. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract The mitochondrial (mt) genome of the bushveld rain frog (Breviceps adspersus, family Brevicipitidae, Afrobatrachia) is the largest (28.8 kbp) among the vertebrates investigated to date. -
New Sahonagasy Action Plan 2016-2020
New Sahonagasy Action Plan 2016-2020 1 New Sahonagasy Action Plan 2016 – 2020 Nouveau plan d’Action Sahonagasy 2016 – 2020 Edited by: Franco Andreone, IUCN SSC Amphibian Specialist Group - Madagascar Jeff S. Dawson, Durrell Wildlife Conservation Trust Falitiana C. E. Rabemananjara, IUCN SSC Amphibian Specialist Group - Madagascar Nirhy H.C. Rabibisoa, IUCN SSC Amphibian Specialist Group - Madagascar Tsanta F. Rakotonanahary, Durrell Wildlife Conservation Trust With assistance from: Candace M. Hansen-Hendrikx, Amphibian Survival Alliance James P. Lewis, Amphibian Survival Alliance/Rainforest Trust Published by: Museo Regionale di Scienze Naturali (Turin, Italy) and Amphibian Survival Alliance (Warrenton, VA) Publication date: June 2016 Recommended citation: Andreone, F., Dawson, J.S., Rabemananjara, F.C.E., Rabibisoa, N.H.C. & Rakotonanahary, T.F. (eds). 2016. New Sahonagasy Action Plan 2016–2020 / Nouveau Plan d'Action Sahonagasy 2016–2020. Museo Regionale di Scienze Naturali and Amphibian Survival Alliance, Turin. ISBN: 978-88-97189-26-8 Layout by: Candace M. Hansen-Hendrikx, Amphibian Survival Alliance Translation into French: Mathilde Malas, Speech Bubbles, www.speechbubbles.eu Printed by: Centro Stampa Regione Piemonte, Turin Front cover: Spinomantis aglavei, Gonçalo M. Rosa Back cover: Mantella expectata, Gonçalo M. Rosa IUCN - International Union for Conservation of Nature Founded in 1948, The International Union for Conservation of Nature brings together States, government agencies and a diverse range of nongovernmental organizations in a unique world partnership: over 1,000 members in all spread across some 140 countries. As a Union, IUCN seeks to influence, encourage and assist societies throughout the world to conserve the integrity and diversity of nature and to ensure that any use of natural resources is equitable and ecologically sustainable. -
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VOLUME 3 ISSUE 1 DECEMBER 2008 MADAGASCAR CONSERVATION & DEVELOPMENT INVESTING FOR A SUSTAINABLE NATURAL ENVIRONMENT FOR FUTURE GENERATIONS OF HUMANS, ANIMALS AND PLANTS OF MADAGASCAR IN THIS ISSUE Taboos & Social Contracts Bats & Bushmeat in Madagascar Endemic Plants in the Mandena Mining Area Radio for Sustain- able Development MADAGASCAR CONSERVATION & DEVELOPMENT VOLUME 3 | ISSUE 1 — DECEMBER 2008 PAGE 2 TABLE OF CONTENTS EDITORIAL 2 Editorial by Wilmé, L. and Waeber, P. O. 5 Foreword by Camara, C. Image in Action 85 Impressum The attachment that we feel to Madagascar compels us to talk ARTICLES about it – its richness, its values, its people and about life lessons 7 Taboos and social contracts: Tools for ecosystem learned and taught. As these experiences may differ in many management – lessons from the Manambolomaty aspects, a journal is the ideal place for sharing our common Lakes RAMSAR site, western Madagascar. Rabearivony J., ideas, as well as expressing our divergent thoughts and theories. Fanameha, E, Mampiandra, J. and Thorstom R. It is also a conduit for the exchange and transmission of our 17 Three flying fox (Pteropodidae: Pteropus rufus) ideas and perspectives to the world. Thus, it is the ambition roosts, three conservation challenges in southeastern of this journal to talk about Madagascar – it’s natural richness Madagascar. Rahaingodrahety, V. N., Andriafidison, D., and its conservation, about development and challenges in the Ratsimbazafy, J., Racey, P. A. and Jenkins, R. K. B. country, and more generally about components and facets of 22 Bats as bushmeat in Madagascar. Jenkins, R. K. B and conservation and development. Racey, P. -
Morphometric Study on Tadpoles of Bombina Variegata (Linnaeus, 1758) (Anura; Bombinatoridae)
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Firenze University Press: E-Journals Acta Herpetologica 5(2): 223-231, 2010 Morphometric study on tadpoles of Bombina variegata (Linnaeus, 1758) (Anura; Bombinatoridae) Anna Rita Di Cerbo*, Carlo M. Biancardi Centro Studi Faunistica dei Vertebrati, Società Italiana di Scienze Naturali, C.so Venezia 55, I-20121, Milano, Italy. *Correspondig author. E.mail: [email protected] Submitted on: 2009, 23th November; revised on 2010, 10th October; accepted on 2010, 12th November. Abstract. The tadpoles of Yellow-bellied toad (Bombina variegata) can be easily rec- ognized from other Italian anuran species, except those of B. pachypus (though the two congeneric species are allopatric). In this paper we report morphometric data on B. variegata tadpoles from a Lombard population living near a torrent at 450 m a.s.l. On a sample of 264 tadpoles (stages 19-44, according to Gosner, 1960) we meas- ured the following five variables: snout-vent length, tail length, maximum tail height, total length and weight. We found a slight allometric relationship between snout-vent length and tail length, while, as expected, the weight is nearly proportional to the cube of linear measures. According to literature data, our results point to highly constant proportions during the development phases up to prometamorphic stages. The ratio between snout-vent length and tail length was about 0.75 during the whole growing phase, while from stage 42 the proportion increases as the resorption of the tail starts. Keywords. Tadpole morphology, Yellow-bellied toad, Bombina variegata. -
The Caecilians of the World: a Taxonomic Review by Edward Harrison Taylor Review By: Marvalee H
The Caecilians of the World: A Taxonomic Review by Edward Harrison Taylor Review by: Marvalee H. Wake Copeia, Vol. 1969, No. 1 (Mar. 6, 1969), pp. 216-219 Published by: American Society of Ichthyologists and Herpetologists (ASIH) Stable URL: http://www.jstor.org/stable/1441738 . Accessed: 25/03/2014 11:09 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. American Society of Ichthyologists and Herpetologists (ASIH) is collaborating with JSTOR to digitize, preserve and extend access to Copeia. http://www.jstor.org This content downloaded from 192.188.55.3 on Tue, 25 Mar 2014 11:09:44 AM All use subject to JSTOR Terms and Conditions 216 COPEIA, 1969, NO. 1 three year period, some of the latter per- add-not only the Indo-Pacific, but this Indo- sonally by Munro. The book must be used Australian archipelago, the richest area in in conjunction with the checklist "The the world for marine fish species, badly needs Fishes of the New Guinea Region" (Papua more work of this high calibre.-F. H. TAL- and New Guinea Agr. J. 10:97-339, 1958), BOT, Australian Museum, 6-8 College Street, a sizable work in itself, including a full list Sydney, Australia. -
Investigations Into the Presence of Nidoviruses in Pythons Silvia Blahak1, Maria Jenckel2,3, Dirk Höper2, Martin Beer2, Bernd Hoffmann2 and Kore Schlottau2*
Blahak et al. Virology Journal (2020) 17:6 https://doi.org/10.1186/s12985-020-1279-5 RESEARCH Open Access Investigations into the presence of nidoviruses in pythons Silvia Blahak1, Maria Jenckel2,3, Dirk Höper2, Martin Beer2, Bernd Hoffmann2 and Kore Schlottau2* Abstract Background: Pneumonia and stomatitis represent severe and often fatal diseases in different captive snakes. Apart from bacterial infections, paramyxo-, adeno-, reo- and arenaviruses cause these diseases. In 2014, new viruses emerged as the cause of pneumonia in pythons. In a few publications, nidoviruses have been reported in association with pneumonia in ball pythons and a tiger python. The viruses were found using new sequencing methods from the organ tissue of dead animals. Methods: Severe pneumonia and stomatitis resulted in a high mortality rate in a captive breeding collection of green tree pythons. Unbiased deep sequencing lead to the detection of nidoviral sequences. A developed RT-qPCR was used to confirm the metagenome results and to determine the importance of this virus. A total of 1554 different boid snakes, including animals suffering from respiratory diseases as well as healthy controls, were screened for nidoviruses. Furthermore, in addition to two full-length sequences, partial sequences were generated from different snake species. Results: The assembled full-length snake nidovirus genomes share only an overall genome sequence identity of less than 66.9% to other published snake nidoviruses and new partial sequences vary between 99.89 and 79.4%. Highest viral loads were detected in lung samples. The snake nidovirus was not only present in diseased animals, but also in snakes showing no typical clinical signs.