A New Genus and Species of Xenodermatid Snake (Squamata: Caenophidia: Xenodermatidae) from Northern Lao People’S Democratic Republic
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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. -
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. -
Open Access Research Article the Reptiles of Bega Watershed of the Province of Agusan Del Sur in the Philippines Abstract: 1. I
World Journal of Environmental Biosciences All Rights Reserved Euresian Publication © 2015 eISSN 2277- 8047 Available Online at: www.environmentaljournals.org Volume 4, Issue 2: 50-61 Open Access Research Article The Reptiles of Bega Watershed of the Province of Agusan Del Sur in the Philippines Marlon N. Balmores and Olga M. Nuñeza* Department of Biological Sciences, College of Science and Mathematics, Mindanao State University – Iligan Institute of Technology, Andres Bonifacio Avenue, Iligan City, 9200, Philippines *Corresponding author: [email protected] Abstract: Reptiles are important components of the food webs in most ecosystems where they fill a critical role both as predator and prey species. This study was conducted in Bega Watershed, Mabuhay, Prosperidad, Agusan del Sur to document species diversity, richness, and endemism of reptiles using a combination of cruising and pitfall trapping methods. Sixteen reptile species comprising 13 (81.25%) endemic species with one Mindanao endemic were recorded in Bega Watershed. A moderate species diversity (H’=2.514) with a more or less even distribution was also documented. Sampling Site 1 (Bega Falls) had the highest species richness. Bray-Curtis cluster analysis showed that site 1 (Bega Falls) and site 4 (Malipaga area) had the highest similarity index (40%) while Detrended Correspondence Analysis showed that site 1 is the most diverse among the four sampling sites. Results indicate the need for conservation action since despite low elevation, small land area, and relatively high disturbance, Bega Watershed still supports diverse assemblage of reptiles. Keywords: Conservation, Diversity, Ecosystem, Endemic, Predator 1. Introduction: threatened by burgeoning human population and The Philippine archipelago is one of the largest continued deforestation (Heaney and Oliver, aggregations of islands in the world thus, not 1997). -
Herpetological Assemblages in Tropical Forests of the Taguibo Watershed, Butuan City, Eastern Mindanao, Philippines
Philippine Journal of Science 3rd Draft: 17 pages 150 (S1): 415-431, Special Issue on Biodiversity Corrected: 05 Apr 2021 ISSN 0031 - 7683 04:20 PM Date Received: 04 Oct 2020 31_MS_20-266B Herpetological Assemblages in Tropical Forests of the Taguibo Watershed, Butuan City, Eastern Mindanao, Philippines Marites B. Sanguila1,2*, Jeszianlenn L. Plaza1,2, Marjorie Y. Mahinay2, Roger C. Edma Jr.2, and Rafe M. Brown3 1Biodiversity Informatics and Research Center, Father Saturnino Urios University San Francisco Street, Butuan City, Agusan del Norte 8600 Philippines 2Natural Sciences and Mathematics Division, Arts and Sciences Program Father Saturnino Urios University, San Francisco Street Butuan City, Agusan del Norte 8600 Philippines 3Biodiversity Institute and Department of Ecology and Evolutionary Biology 1345 Jayhawk Blvd., University of Kansas, Lawrence, KS 66045 USA Tropical watershed ecosystems support heterogeneous habitats and diverse non-human species assemblages, together providing ecosystem services to humans. Amphibians and reptiles are recognized as sensitive indicators of ecosystem “health,” related to beneficial services (provisional, regulating, cultural, structural, functional) human societies receive from terrestrial watersheds. The Taguibo Watershed supplies fresh drinking water to Butuan City in the Caraga Region of northeast Mindanao Island. However, very little is known about the herpetofauna of the area. Here, we synthesize biodiversity data from historical (1971, 1979) and recent (2013, 2017) herpetological surveys from the region. We utilize specimen-associated occurrence records and natural history information to produce a species inventory, analyze their habitat utilization, and characterize diversity metrics to describe herpetological communities of the watershed – resulting in 44 species (27 new records). A number of historically-documented species persist, having partitioned riparian and terrestrial habitat types in dipterocarp and secondary-growth forests of Taguibo. -
A Molecular Phylogeny of the Lamprophiidae Fitzinger (Serpentes, Caenophidia)
Zootaxa 1945: 51–66 (2008) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA Copyright © 2008 · Magnolia Press ISSN 1175-5334 (online edition) Dissecting the major African snake radiation: a molecular phylogeny of the Lamprophiidae Fitzinger (Serpentes, Caenophidia) NICOLAS VIDAL1,10, WILLIAM R. BRANCH2, OLIVIER S.G. PAUWELS3,4, S. BLAIR HEDGES5, DONALD G. BROADLEY6, MICHAEL WINK7, CORINNE CRUAUD8, ULRICH JOGER9 & ZOLTÁN TAMÁS NAGY3 1UMR 7138, Systématique, Evolution, Adaptation, Département Systématique et Evolution, C. P. 26, Muséum National d’Histoire Naturelle, 43 Rue Cuvier, Paris 75005, France. E-mail: [email protected] 2Bayworld, P.O. Box 13147, Humewood 6013, South Africa. E-mail: [email protected] 3 Royal Belgian Institute of Natural Sciences, Rue Vautier 29, B-1000 Brussels, Belgium. E-mail: [email protected], [email protected] 4Smithsonian Institution, Center for Conservation Education and Sustainability, B.P. 48, Gamba, Gabon. 5Department of Biology, 208 Mueller Laboratory, Pennsylvania State University, University Park, PA 16802-5301 USA. E-mail: [email protected] 6Biodiversity Foundation for Africa, P.O. Box FM 730, Bulawayo, Zimbabwe. E-mail: [email protected] 7 Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, INF 364, D-69120 Heidelberg, Germany. E-mail: [email protected] 8Centre national de séquençage, Genoscope, 2 rue Gaston-Crémieux, CP5706, 91057 Evry cedex, France. E-mail: www.genoscope.fr 9Staatliches Naturhistorisches Museum, Pockelsstr. 10, 38106 Braunschweig, Germany. E-mail: [email protected] 10Corresponding author Abstract The Elapoidea includes the Elapidae and a large (~60 genera, 280 sp.) and mostly African (including Madagascar) radia- tion termed Lamprophiidae by Vidal et al. -
Species Identification of Shed Snake Skins in Taiwan and Adjacent Islands
Zoological Studies 56: 38 (2017) doi:10.6620/ZS.2017.56-38 Open Access Species Identification of Shed Snake Skins in Taiwan and Adjacent Islands Tein-Shun Tsai1,* and Jean-Jay Mao2 1Department of Biological Science and Technology, National Pingtung University of Science and Technology 1 Shuefu Road, Neipu, Pingtung 912, Taiwan 2Department of Forestry and Natural Resources, National Ilan University No.1, Sec. 1, Shennong Rd., Yilan City, Yilan County 260, Taiwan. E-mail: [email protected] (Received 28 August 2017; Accepted 25 November 2017; Published 19 December 2017; Communicated by Jian-Nan Liu) Tein-Shun Tsai and Jean-Jay Mao (2017) Shed snake skins have many applications for humans and other animals, and can provide much useful information to a field survey. When properly prepared and identified, a shed snake skin can be used as an important voucher; the morphological descriptions of the shed skins may be critical for taxonomic research, as well as studies of snake ecology and conservation. However, few convenient/ expeditious methods or techniques to identify shed snake skins in specific areas have been developed. In this study, we collected and examined a total of 1,260 shed skin samples - including 322 samples from neonates/ juveniles and 938 from subadults/adults - from 53 snake species in Taiwan and adjacent islands, and developed the first guide to identify them. To the naked eye or from scanned images, the sheds of almost all species could be identified if most of the shed was collected. The key features that aided in identification included the patterns on the sheds and scale morphology. -
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. -
Marine Reptiles Arne R
Virginia Commonwealth University VCU Scholars Compass Study of Biological Complexity Publications Center for the Study of Biological Complexity 2011 Marine Reptiles Arne R. Rasmessen The Royal Danish Academy of Fine Arts John D. Murphy Field Museum of Natural History Medy Ompi Sam Ratulangi University J. Whitfield iG bbons University of Georgia Peter Uetz Virginia Commonwealth University, [email protected] Follow this and additional works at: http://scholarscompass.vcu.edu/csbc_pubs Part of the Life Sciences Commons Copyright: © 2011 Rasmussen et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Downloaded from http://scholarscompass.vcu.edu/csbc_pubs/20 This Article is brought to you for free and open access by the Center for the Study of Biological Complexity at VCU Scholars Compass. It has been accepted for inclusion in Study of Biological Complexity Publications by an authorized administrator of VCU Scholars Compass. For more information, please contact [email protected]. Review Marine Reptiles Arne Redsted Rasmussen1, John C. Murphy2, Medy Ompi3, J. Whitfield Gibbons4, Peter Uetz5* 1 School of Conservation, The Royal Danish Academy of Fine Arts, Copenhagen, Denmark, 2 Division of Amphibians and Reptiles, Field Museum of Natural History, Chicago, Illinois, United States of America, 3 Marine Biology Laboratory, Faculty of Fisheries and Marine Sciences, Sam Ratulangi University, Manado, North Sulawesi, Indonesia, 4 Savannah River Ecology Lab, University of Georgia, Aiken, South Carolina, United States of America, 5 Center for the Study of Biological Complexity, Virginia Commonwealth University, Richmond, Virginia, United States of America Of the more than 12,000 species and subspecies of extant Caribbean, although some species occasionally travel as far north reptiles, about 100 have re-entered the ocean. -
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. -
Vol. 25 No. 1 March, 2000 H a M a D R Y a D V O L 25
NO.1 25 M M A A H D A H O V D A Y C R R L 0 0 0 2 VOL. 25NO.1 MARCH, 2000 2% 3% 2% 3% 2% 3% 2% 3% 2% 3% 2% 3% 2% 3% 2% 3% 2% 3% 4% 5% 4% 5% 4% 5% 4% 5% 4% 5% 4% 5% 4% 5% 4% 5% 4% 5% HAMADRYAD Vol. 25. No. 1. March 2000 Date of issue: 31 March 2000 ISSN 0972-205X Contents A. E. GREER & D. G. BROADLEY. Six characters of systematic importance in the scincid lizard genus Mabuya .............................. 1–12 U. MANTHEY & W. DENZER. Description of a new genus, Hypsicalotes gen. nov. (Sauria: Agamidae) from Mt. Kinabalu, North Borneo, with remarks on the generic identity of Gonocephalus schultzewestrumi Urban, 1999 ................13–20 K. VASUDEVAN & S. K. DUTTA. A new species of Rhacophorus (Anura: Rhacophoridae) from the Western Ghats, India .................21–28 O. S. G. PAUWELS, V. WALLACH, O.-A. LAOHAWAT, C. CHIMSUNCHART, P. DAVID & M. J. COX. Ethnozoology of the “ngoo-how-pak-pet” (Serpentes: Typhlopidae) in southern peninsular Thailand ................29–37 S. K. DUTTA & P. RAY. Microhyla sholigari, a new species of microhylid frog (Anura: Microhylidae) from Karnataka, India ....................38–44 Notes R. VYAS. Notes on distribution and breeding ecology of Geckoella collegalensis (Beddome, 1870) ..................................... 45–46 A. M. BAUER. On the identity of Lacerta tjitja Ljungh 1804, a gecko from Java .....46–49 M. F. AHMED & S. K. DUTTA. First record of Polypedates taeniatus (Boulenger, 1906) from Assam, north-eastern India ...................49–50 N. M. ISHWAR. Melanobatrachus indicus Beddome, 1878, resighted at the Anaimalai Hills, southern India ............................. -
Report of Rapid Biodiversity Assessments at Cenwanglaoshan Nature Reserve, Northwest Guangxi, China, 1999 and 2002
Report of Rapid Biodiversity Assessments at Cenwanglaoshan Nature Reserve, Northwest Guangxi, China, 1999 and 2002 Kadoorie Farm and Botanic Garden in collaboration with Guangxi Zhuang Autonomous Region Forestry Department Guangxi Forestry Survey and Planning Institute South China Institute of Botany South China Normal University Institute of Zoology, CAS March 2003 South China Forest Biodiversity Survey Report Series: No. 27 (Online Simplified Version) Report of Rapid Biodiversity Assessments at Cenwanglaoshan Nature Reserve, Northwest Guangxi, China, 1999 and 2002 Editors John R. Fellowes, Bosco P.L. Chan, Michael W.N. Lau, Ng Sai-Chit and Gloria L.P. Siu Contributors Kadoorie Farm and Botanic Garden: Gloria L.P. Siu (GS) Bosco P.L. Chan (BC) John R. Fellowes (JRF) Michael W.N. Lau (ML) Lee Kwok Shing (LKS) Ng Sai-Chit (NSC) Graham T. Reels (GTR) Roger C. Kendrick (RCK) Guangxi Zhuang Autonomous Region Forestry Department: Xu Zhihong (XZH) Pun Fulin (PFL) Xiao Ma (XM) Zhu Jindao (ZJD) Guangxi Forestry Survey and Planning Institute (Comprehensive Tan Wei Fu (TWF) Planning Branch): Huang Ziping (HZP) Guangxi Natural History Museum: Mo Yunming (MYM) Zhou Tianfu (ZTF) South China Institute of Botany: Chen Binghui (CBH) Huang Xiangxu (HXX) Wang Ruijiang (WRJ) South China Normal University: Li Zhenchang (LZC) Chen Xianglin (CXL) Institute of Zoology CAS (Beijing): Zhang Guoqing (ZGQ) Chen Deniu (CDN) Nanjing University: Chen Jianshou (CJS) Wang Songjie (WSJ) Xinyang Teachers’ College: Li Hongjing (LHJ) Voluntary specialist: Keith D.P. Wilson (KW) Background The present report details the findings of visits to Northwest Guangxi by members of Kadoorie Farm and Botanic Garden (KFBG) in Hong Kong and their colleagues, as part of KFBG's South China Biodiversity Conservation Programme. -
Proceedings of the United States National Museum
CHINESE AMPHIBIANS AND KEPTILES IN THE UNITED STATES NATIONAL MUSEUM By Leonhard Stejneger Head Curator of Biology, United States National Museum The United States National Museum has of late years received a lar^e number of amphibians and reptiles from China, and as there are indications of an increasing interest in these vertebrates among students and collectors in that country, it has been thought best to give as full an account as practicable of the material available, in order to acquaint them not only with what the National Museum possesses, but inferentially with what is still needed before a com- plete herpetology of Qhina proper can be attempted. In my Herpetology of Japan and Adjacent Territory^ I included not only the Russian Coast Province of Siberia, but also Korea, eastern Manchuria, and adjoining parts of northeastern China proper. Each genus and species, the Chinese ones included, were treated in detail, with full synonymy and bibliographic references, etc. In a subsequent paper, The Batrachians and Keptiles of Formosa,- genera and species added to the fauna since 1907 were similarly elaborated in full. It has been considered unnecessary to repeat these synony- mies and references in the present paper, hence only genera and species not found in the two earlier works are here treated in the same manner. However, reference has been given under each species to the page in the Herpetology of Japan and the paper re- lating to Formosa, where the species with synonymy, description, and frequently also illustration may be found. In addition, refer- ences omitted in the earlier work are given in so far as they relate to China proper, but no attempt has been made to include those re- ferring to Hainan and Formosa.