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Letter from the Desk of David Challinor August 2001 About 1,000
Letter From the Desk of David Challinor August 2001 About 1,000 miles west of the mid-Atlantic Ridge at latitude 32°20' north (roughly Charleston, SC), lies a small, isolated archipelago some 600 miles off the US coast. Bermuda is the only portion of a large, relatively shallow area or bank that reaches the surface. This bank intrudes into the much deeper Northwestern Atlantic Basin, an oceanic depression averaging some 6,000 m deep. A few kilometers off Bermuda's south shore, the depth of the ocean slopes precipitously to several hundred meters. Bermuda's geographic isolation has caused many endemic plants to evolve independently from their close relatives on the US mainland. This month's letter will continue the theme of last month's about Iceland and will illustrate the joys and rewards of longevity that enable us to witness what appears to be the beginnings of landscape changes. In the case of Bermuda, I have watched for more than 40 years a scientist trying to encourage an endemic tree's resistance to an introduced pathogen. My first Bermuda visit was in the spring of 1931. At that time the archipelago was covered with Bermuda cedar ( Juniperus bermudiana ). This endemic species was extraordinarily well adapted to the limestone soil and sank its roots deep into crevices of the atoll's coral rock foundation. The juniper's relatively low height, (it grows only 50' high in sheltered locations), protected it from "blow down," a frequent risk to trees in this hurricane-prone area. Juniper regenerated easily and its wood was used in construction, furniture, and for centuries in local boat building. -
Phylogenetic Analyses of Juniperus Species in Turkey and Their Relations with Other Juniperus Based on Cpdna Supervisor: Prof
MOLECULAR PHYLOGENETIC ANALYSES OF JUNIPERUS L. SPECIES IN TURKEY AND THEIR RELATIONS WITH OTHER JUNIPERS BASED ON cpDNA A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY AYSUN DEMET GÜVENDİREN IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN BIOLOGY APRIL 2015 Approval of the thesis MOLECULAR PHYLOGENETIC ANALYSES OF JUNIPERUS L. SPECIES IN TURKEY AND THEIR RELATIONS WITH OTHER JUNIPERS BASED ON cpDNA submitted by AYSUN DEMET GÜVENDİREN in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Department of Biological Sciences, Middle East Technical University by, Prof. Dr. Gülbin Dural Ünver Dean, Graduate School of Natural and Applied Sciences Prof. Dr. Orhan Adalı Head of the Department, Biological Sciences Prof. Dr. Zeki Kaya Supervisor, Dept. of Biological Sciences METU Examining Committee Members Prof. Dr. Musa Doğan Dept. Biological Sciences, METU Prof. Dr. Zeki Kaya Dept. Biological Sciences, METU Prof.Dr. Hayri Duman Biology Dept., Gazi University Prof. Dr. İrfan Kandemir Biology Dept., Ankara University Assoc. Prof. Dr. Sertaç Önde Dept. Biological Sciences, METU Date: iii I hereby declare that all information in this document has been obtained and presented in accordance with academic rules and ethical conduct. I also declare that, as required by these rules and conduct, I have fully cited and referenced all material and results that are not original to this work. Name, Last name : Aysun Demet GÜVENDİREN Signature : iv ABSTRACT MOLECULAR PHYLOGENETIC ANALYSES OF JUNIPERUS L. SPECIES IN TURKEY AND THEIR RELATIONS WITH OTHER JUNIPERS BASED ON cpDNA Güvendiren, Aysun Demet Ph.D., Department of Biological Sciences Supervisor: Prof. -
ARTHROPODA Subphylum Hexapoda Protura, Springtails, Diplura, and Insects
NINE Phylum ARTHROPODA SUBPHYLUM HEXAPODA Protura, springtails, Diplura, and insects ROD P. MACFARLANE, PETER A. MADDISON, IAN G. ANDREW, JOCELYN A. BERRY, PETER M. JOHNS, ROBERT J. B. HOARE, MARIE-CLAUDE LARIVIÈRE, PENELOPE GREENSLADE, ROSA C. HENDERSON, COURTenaY N. SMITHERS, RicarDO L. PALMA, JOHN B. WARD, ROBERT L. C. PILGRIM, DaVID R. TOWNS, IAN McLELLAN, DAVID A. J. TEULON, TERRY R. HITCHINGS, VICTOR F. EASTOP, NICHOLAS A. MARTIN, MURRAY J. FLETCHER, MARLON A. W. STUFKENS, PAMELA J. DALE, Daniel BURCKHARDT, THOMAS R. BUCKLEY, STEVEN A. TREWICK defining feature of the Hexapoda, as the name suggests, is six legs. Also, the body comprises a head, thorax, and abdomen. The number A of abdominal segments varies, however; there are only six in the Collembola (springtails), 9–12 in the Protura, and 10 in the Diplura, whereas in all other hexapods there are strictly 11. Insects are now regarded as comprising only those hexapods with 11 abdominal segments. Whereas crustaceans are the dominant group of arthropods in the sea, hexapods prevail on land, in numbers and biomass. Altogether, the Hexapoda constitutes the most diverse group of animals – the estimated number of described species worldwide is just over 900,000, with the beetles (order Coleoptera) comprising more than a third of these. Today, the Hexapoda is considered to contain four classes – the Insecta, and the Protura, Collembola, and Diplura. The latter three classes were formerly allied with the insect orders Archaeognatha (jumping bristletails) and Thysanura (silverfish) as the insect subclass Apterygota (‘wingless’). The Apterygota is now regarded as an artificial assemblage (Bitsch & Bitsch 2000). -
Polyploidy in the Conifer Genus Juniperus: an Unexpectedly High Rate
ORIGINAL RESEARCH published: 22 May 2019 doi: 10.3389/fpls.2019.00676 Polyploidy in the Conifer Genus Juniperus: An Unexpectedly High Rate Perla Farhat 1,2, Oriane Hidalgo 3,4, Thierry Robert 2,5, Sonja Siljak-Yakovlev 2, Ilia J. Leitch 3, Robert P. Adams 6 and Magda Bou Dagher-Kharrat 1* 1 Laboratoire Biodiversité et Génomique Fonctionnelle, Faculté des Sciences, Université Saint-Joseph, Campus Sciences et Technologies, Beirut, Lebanon, 2 Ecologie Systématique Evolution, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Orsay, France, 3 Royal Botanic Gardens Kew, Richmond, United Kingdom, 4 Laboratori de Botànica, Facultat de Farmàcia, Universitat de Barcelona, Unitat Associada CSIC, Barcelona, Spain, 5 Biology Department, Sorbonne Université, Paris, France, 6 Biology Department, Baylor University, Waco, TX, United States Recent research suggests that the frequency of polyploidy may have been underestimated in gymnosperms. One notable example is in the conifer genus Juniperus, where there are already a few reports of polyploids although data are still missing for most species. In this study, we evaluated the extent of polyploidy in Juniperus by conducting the first comprehensive screen across nearly all of the genus. Genome size data from fresh material, together with chromosome counts, were used to demonstrate that genome sizes estimated from dried material could be used as reliable proxies to uncover Edited by: the extent of ploidy diversity across the genus. Our analysis revealed that 16 Juniperus Michael R. McKain, University of Alabama, United States taxa were polyploid, with tetraploids and one hexaploid being reported. Furthermore, by Reviewed by: analyzing the genome size and chromosome data within a phylogenetic framework we Dirk Carl Albach, provide the first evidence of possible lineage-specific polyploidizations within the genus. -
Rare and Endangered
AMERICAN CONIFER SOCIETY coniferQUARTERLY PAGE 13 Rare and Endangered SAVE THE DATES: The American Conifer Society National Meeting June 14 - 17, 2018 Summer 2017 Volume 34, Number 3 CONIFERQUARTERLY (ISSN 8755-0490) is published quarterly by the American Conifer Society. The Society is a non-profit organization incorporated under the laws of the CONIFER Commonwealth of Pennsylvania and is tax exempt under section 501(c)3 of the Internal Revenue Service Code. QUARTERLY You are invited to join our Society. Please address Editor membership and other inquiries to the American Conifer Society National Office, PO Box 1583, Minneapolis, MN Ronald J. Elardo 55311, [email protected]. Membership: US & Canada $40, International $58 (indiv.), $30 (institutional), $75 Technical Editors (sustaining), $100 (corporate business) and $150 (patron). Steven Courtney If you are moving, please notify the National Office 4 weeks David Olszyk in advance. All editorial and advertising matters should be sent to: Advisory Committee Ron Elardo, 5749 Hunter Ct., Adrian, MI 49221-2471, Tom Neff, Committee Chair (517) 902-7230 or email [email protected] Sara Malone Martin Stone Copyright © 2017, American Conifer Society. All rights reserved. No material contained herein may be reproduced Ronald J. Elardo in any form without prior written permission of the publisher. Evelyn Cox, past Editor Opinions expressed by authors and advertisers are not necessarily those of the Society. Cover Photo Keteleria davidiana Taiwan and SE Note: Hardiness Zone references in CONIFERQUARTERLY are USDA classifications unless otherwise specified. Asia. Photo by Tom Cox. Climate Zone Cwa TABLE OF CONTENTS Florida’s BIG Bald Cypress 4 FROM ASHES to REBIRTH By Ronald J. -
Coleoptera: Coccinellidae): Influence of Subelytral Ultrastructure
Experimental & Applied Acarology, 23 (1999) 97–118 Review Phoresy by Hemisarcoptes (Acari: Hemisarcoptidae) on Chilocorus (Coleoptera: Coccinellidae): influence of subelytral ultrastructure M.A. Houck* Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409–3131, USA (Received 9 January 1997; accepted 17 April 1998) ABSTRACT The non-phoretic stages of mites of the genus Hemisarcoptes are predators of the family Diaspididae. The heteromorphic deutonymph (hypopus) maintains a stenoxenic relationship with beetles of the genus Chilocorus. The mites attach to the subelytral surface of the beetle elytron during transport. There is variation in mite density among species of Chilocorus. Both Hemisarcoptes and Chilocorus have been applied to biological control programmes around the world. The objective of this study was to determine whether subelytral ultrastructure (spine density) plays a role in the evolution of symbiosis between the mite and the beetle. The subelytral surfaces of 19 species of Chilocorus and 16 species of Exochomus were examined. Spine density was determined for five subelytral zones: the anterior pronotal margin, medial central region, caudoventral tip, lateral distal margin and epipleural region. Spine density on the subelytral surface of Chilocorus and Exochomus was inversely correlated with the size of the elytron for all zones except the caudoventral tip. This suggests that an increase in body size resulted in a redistribution of spines and not an addition of spines. The pattern of spine density in Exochomus and Chilocorus follows a single size–density trajectory. The pattern of subelytral ultrastructure is not strictly consistent with either beetle phylogeny or beetle allometry. The absence of spines is not correlated with either beetle genus or size and species of either Chilocorus or Exochomus may be devoid of spines in any zone, irrespective of body size. -
Evaluating a Standardized Protocol and Scale for Determining Non-Native Insect Impact
A peer-reviewed open-access journal NeoBiota 55: 61–83 (2020) Expert assessment of non-native insect impacts 61 doi: 10.3897/neobiota.55.38981 RESEARCH ARTICLE NeoBiota http://neobiota.pensoft.net Advancing research on alien species and biological invasions The impact is in the details: evaluating a standardized protocol and scale for determining non-native insect impact Ashley N. Schulz1, Angela M. Mech2, 15, Craig R. Allen3, Matthew P. Ayres4, Kamal J.K. Gandhi5, Jessica Gurevitch6, Nathan P. Havill7, Daniel A. Herms8, Ruth A. Hufbauer9, Andrew M. Liebhold10, 11, Kenneth F. Raffa12, Michael J. Raupp13, Kathryn A. Thomas14, Patrick C. Tobin2, Travis D. Marsico1 1 Arkansas State University, Department of Biological Sciences, PO Box 599, State University, AR 72467, USA 2 University of Washington, School of Environmental and Forest Sciences, 123 Anderson Hall, 3715 W Stevens Way NE, Seattle, WA 98195, USA 3 U.S. Geological Survey, Nebraska Cooperative Fish and Wildlife Unit, University of Nebraska-Lincoln, 423 Hardin Hall, 3310 Holdrege Street, Lincoln, NE 68583, USA 4 Dartmouth College, Department of Biological Sciences, 78 College Street, Hanover, NH 03755, USA 5 The University of Georgia, Daniel B. Warnell School of Forestry and Natural Resources, 180 E. Green St., Athens, GA 30602, USA 6 Stony Brook University, Department of Ecology and Evolution, Stony Brook, NY 11794, USA 7 USDA Forest Service Northern Research Station, 51 Mill Pond Rd., Hamden, CT 06514, USA 8 The Davey Tree Expert Company, 1500 N Mantua St., Kent, OH 44240, USA -
Coleoptera: Coccinellidae) As a Biocontrol Agent
CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources 2009 4, No. 046 Review Factors affecting utility of Chilocorus nigritus (F.) (Coleoptera: Coccinellidae) as a biocontrol agent D.J. Ponsonby* Address: Ecology Research Group, Department of Geographical and Life Sciences, Canterbury Christ Church University, North Holmes Road, Canterbury, Kent. CT1 1QU, UK. *Correspondence: Email: [email protected] Received: 30 March 2009 Accepted: 25 June 2009 doi: 10.1079/PAVSNNR20094046 The electronic version of this article is the definitive one. It is located here: http://www.cababstractsplus.org/cabreviews g CAB International 2009 (Online ISSN 1749-8848) Abstract Chilocorus nigritus (F.) has been one of the most successful coccidophagous coccinellids in the history of classical biological control. It is an effective predator of many species of Diaspididae, some Coccidae and some Asterolecaniidae, with an ability to colonize a relatively wide range of tropical and sub-tropical environments. It appears to have few natural enemies, a rapid numerical response and an excellent capacity to coexist in stable relationships with parasitoids. A great deal of literature relating to its distribution, biology, ecology, mass rearing and prey preferences exists, but there is much ambiguity and the beetle sometimes inexplicably fails to establish, even when conditions are apparently favourable. This review brings together the key research relating to factors that affect its utility in biocontrol programmes, including its use in indoor landscapes and temperate glasshouses. Data are collated and interpreted and areas where knowledge is lacking are identified. Recommendations are made for prioritizing further research and improving its use in biocontrol programmes. -
University of Nevada, Reno Dendrochronological Potential Of
University of Nevada, Reno Dendrochronological Potential of Bermuda Cedar A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Geography by Jehren A. Boehm Dr. Adam Csank/Thesis Advisor December, 2019 THE GRADUATE SCHOOL We recommend that the thesis prepared under our supervision by Entitled be accepted in partial fulfillment of the requirements for the degree of , Advisor , Committee Member , Graduate School Representative David W. Zeh, Ph.D., Dean, Graduate School i Abstract The Bermuda cedar, Juniperus bermudiana, is an endangered species endemic to the Bermuda Islands. Likely speciating from a common ancestor of mainland and Caribbean junipers, the Bermuda cedar thrives in the limestone soil and breaks the salty Atlantic wind for less hardy flora. From the time of its establishment on the isolated archipelago until the 15th century, no mammals treaded beneath the Bermuda cedar canopy. The first human use for Bermuda cedar was to repair ships that had wrecked on the treacherous reefs igniting a craze for the valuable lumber. After multiple waves of deforestation and large shifts in land use, conservation of the Bermuda cedar was always an issue and eventually was prioritized by the late 20th century. By 1950 between 90-95% of Bermuda cedars, already competing with multitudes of introduced species, were defoliated and killed by an outbreak of invasive scale leaf insects that were accidentally introduced. Roughly 1% of Bermuda cedars that lived in the 1930’s are still growing today. As a culturally important forestry product since the 17th century an accurate chronology is vital to tell the story of Churches, historic structures and to reconstruct weather and climate that has impacted the Bermuda Islands over the last centuries. -
CHEMOTAXONOMY of the CUPRESSACEAE. by P. A. GADEK School of Botany University of New South Wales February, 1986. Thesis Submitte
CHEMOTAXONOMY OF THE CUPRESSACEAE. by P. A. GADEK School of Botany University of New South Wales February, 1986. Thesis submitted for the degree of Doctor of Philosophy. DECLARATION. "I hereby declare that this thesis is my own work and that, to the best of my knowledge and belief, it contains no material previously published or written by another person nor material which to a substantial extent has been accepted for the award of any other degree or diploma of a university or other institute of higher learning, except where due acknowledgement is made in the text of the thesis." ABSTRACT. The aim of this thesis was to extend the data base of the Cupressaceae s.s. by a survey of leaf biflavonoids, and to apply this, with other available data, to a critical reassessment of the current tribes and subfamilies. The biflavonoids in ethanolic leaf extracts of representatives of all genera were analysed by thin layer chromatography. Compounds were identified by chromatographic comparisons with a range of standards, by colour of fluorescence after spraying with an ethanolic solution of AlCu, shifts in UV absorption spectra, as well as permethylation. TLC of permethylated raw extracts proved to be a sensitive method of detecting the range of biflavonoid skeletons present in each species. While there was a high degree of uniformity in the biflavonoid series present in most genera, marked discontinuities were detected within Calocedrus, Chamaecyparis and Thuja. A reassessment of these genera on a broad -range of available data led to the resurrection of two genera, Heyderia and Callitropsis, a redefinition of Thuja as a monotypic genus and the erection of a new genus, Neothuja, to encompass the species removed from Thuja. -
A New Record of the Armored Scale Genus Carulaspis Macgillivray
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida 2016 A new record of the armored scale genus Carulaspis MacGillivray (Hemiptera: Diaspididae) from Korea and its aphelinid parasitoids (Hymenoptera: Aphelinidae) Soo-Jung Suh 167, Yongjeon 1-ro, Gimcheon-si Gyeongsangbuk-do, South Korea, [email protected] Gregory A. Evans USDA/Animal Plant Health Inspection Service Follow this and additional works at: http://digitalcommons.unl.edu/insectamundi Part of the Ecology and Evolutionary Biology Commons, and the Entomology Commons Suh, Soo-Jung and Evans, Gregory A., "A new record of the armored scale genus Carulaspis MacGillivray (Hemiptera: Diaspididae) from Korea and its aphelinid parasitoids (Hymenoptera: Aphelinidae)" (2016). Insecta Mundi. 974. http://digitalcommons.unl.edu/insectamundi/974 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. INSECTA MUNDI A Journal of World Insect Systematics 0466 A new record of the armored scale genus Carulaspis MacGillivray (Hemiptera: Diaspididae) from Korea and its aphelinid parasitoids (Hymenoptera: Aphelinidae) Soo-Jung Suh 167, Yongjeon 1-ro, Gimcheon-si Gyeongsangbuk-do, South Korea 39660 Gregory A. Evans USDA/Animal Plant Health Inspection Service 10300 Baltimore Avenue Beltsville, MD 20705 USA Date of Issue: January 22, 2016 CENTER FOR SYSTEMATIC ENTOMOLOGY, INC., Gainesville, FL Soo-Jung Suh and Gregory A. Evans A new record of the armored scale genus Carulaspis MacGillivray (Hemiptera: Diaspididae) from Korea, and its aphelinid parasitoids (Hymenoptera: Aphelinidae) Insecta Mundi 0466: 1–6 ZooBank Registered: urn:lsid:zoobank.org:pub:4C0AB655-B42F-4486-9180-D76547CD6A50 Published in 2016 by Center for Systematic Entomology, Inc. -
Scale Insects of Britain
SCALE INSECTS OF BRITAIN Duncan Allen & Chris Malumphy Fera Science Ltd., National Agri-Food Innovation Campus Sand Hutton, York, UK YO41 1LZ Outline of talk • What are Scale insects? • Biology • Beneficial scales • Scale insect plant pests • Scale insects in Britain • Detection in different habitats • How to identify scales • Why study scale insects in Animal or vegetable? One Britain? species was only determined to be an insect and not a seed, following a lawsuit (Imms, 1990) What are scale insects? • Plant-sap feeding insects • Related to aphids, whitefly & psyllids • Feed on all parts of the plant • 8000 species • 1050 genera • Between 20-31 families • Higher classification is evolving https://horticulture.com.au/wp-content/uploads/2017/02/Scale-insect-pest-management- plan.pdf Biology and Dispersal • Sexually dimorphic; neotenic females; non-feeding winged adult males • Females 3-4 instars; Males 5 instars • Reproduce sexually, parthenogenetically and hermaphrodites • Most lay eggs, protected by an ovisac, female's body, separate scale-like cover, between wax plates or inside a ventral abdominal pouch • First instars (crawlers) actively disperse and carried by wind • Commonly transported in trade. One of the most successful colonising groups of insects in warmer parts of the world Scale insect life cycle • Beech felt scale Cryptococcus fagisuga • Females 4 instars; males 5 instars • Univoltine (Morales et al 1988) Beneficial scale insects • Used for centuries for production of dyes (Dactylopius, Kermes, Porphyrophora) • Lacquers (Shellac