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On Visual Art and Camouflage
University of Northern Iowa UNI ScholarWorks Faculty Publications Faculty Work 1978 On Visual Art and Camouflage Roy R. Behrens University of Northern Iowa Let us know how access to this document benefits ouy Copyright ©1978 The MIT Press Follow this and additional works at: https://scholarworks.uni.edu/art_facpub Part of the Art and Design Commons Recommended Citation Behrens, Roy R., "On Visual Art and Camouflage" (1978). Faculty Publications. 7. https://scholarworks.uni.edu/art_facpub/7 This Article is brought to you for free and open access by the Faculty Work at UNI ScholarWorks. It has been accepted for inclusion in Faculty Publications by an authorized administrator of UNI ScholarWorks. For more information, please contact [email protected]. Leonardo. Vol. 11, pp. 203-204. 0024--094X/78/070 I -0203S02.00/0 6 Pergamon Press Ltd. 1978. Printed in Great Britain. ON VISUAL ART AND CAMOUFLAGE Roy R. Behrens* In a number of books on visual fine art and design [ 1, 21, countershading makes a 3-dimensional object seem flat, there is mention of the kinship between camouflage and while normal shading in flat paintings can make a painting, but no one has, to my knowledge, pursued it. I depicted object appear to be 3-dimensional. He also have intermittently researched this relationship for discussed the function of disruptive patterning, in which several years, and my initial observations have recently even the most brilliant colors may contribute to the been published [3]. Now I have been awarded a faculty destruction of an animal’s outline. While Thayer’s research grant from the Graduate School of the description of countershading is still respected, his book is University of Wisconsin-Milwaukee to pursue this considered somewhat fanciful because of exaggerated subject in depth. -
LS28 Camouflage and Mimicry Follow up Student #2
Follow-up Activity: For Students Life Science 28: Camouflage and Mimicry Introduction: In this lesson, camouflage & mimicry were explored as examples of adaptations adopted by animals to increase their chances of survival. What can an animal do to keep from being a predator's dinner? To survive, some animals use camouflage so they can better blend in with their surroundings. Camouflage is a set of colorings or markings on an animal that help it to blend in with its surroundings, or habitat, and prevent it from being recognized as potential prey. Activity: Candy Camouflage In this science activity, you and your friends will become the hungry predators and you'll hunt for different colored candies. But it may not be as easy as it sounds—some of your prey will be camouflaged by their habitats. Are you ready for the challenge? Materials: • Six plastic bags (one bag for M&Ms; 5 bags for Skittles, separated by color) • Plain M&Ms; at least 10 of each color (at least two 1.69-ounce packages may be needed) • Skittles; at least 60 of each color (one 16-oz package) • Metal pie tin or other deep plate • Cups for collecting candies during the hunt; one cup per predator • Timer • Data charts (attached) • 2-4 Volunteer predators to be hungry M&Ms-feasting birds Preparation: 1. Place 10 M&Ms of each color (yellow, blue, green, brown, red, orange) into one plastic bag 2. Place 60 Skittles of each color (orange, green, red, yellow, purple) into separate plastic bags. This means you will have 5 separate bags of Skittles: one bag containing only red, one bag containing only orange, one bag containing green, one bag of purple and one bag of yellow) 3. -
Karl Jordan: a Life in Systematics
AN ABSTRACT OF THE DISSERTATION OF Kristin Renee Johnson for the degree of Doctor of Philosophy in History of SciencePresented on July 21, 2003. Title: Karl Jordan: A Life in Systematics Abstract approved: Paul Lawrence Farber Karl Jordan (1861-1959) was an extraordinarily productive entomologist who influenced the development of systematics, entomology, and naturalists' theoretical framework as well as their practice. He has been a figure in existing accounts of the naturalist tradition between 1890 and 1940 that have defended the relative contribution of naturalists to the modem evolutionary synthesis. These accounts, while useful, have primarily examined the natural history of the period in view of how it led to developments in the 193 Os and 40s, removing pre-Synthesis naturalists like Jordan from their research programs, institutional contexts, and disciplinary homes, for the sake of synthesis narratives. This dissertation redresses this picture by examining a naturalist, who, although often cited as important in the synthesis, is more accurately viewed as a man working on the problems of an earlier period. This study examines the specific problems that concerned Jordan, as well as the dynamic institutional, international, theoretical and methodological context of entomology and natural history during his lifetime. It focuses upon how the context in which natural history has been done changed greatly during Jordan's life time, and discusses the role of these changes in both placing naturalists on the defensive among an array of new disciplines and attitudes in science, and providing them with new tools and justifications for doing natural history. One of the primary intents of this study is to demonstrate the many different motives and conditions through which naturalists came to and worked in natural history. -
And Ford, I; Ford, '953) on the Other Hand Have Put Forward a View Intermediate Between the Extreme Ones of Darwin on the One Hand and Goldschmidt on the Other
THE EVOLUTION OF MIMICRY IN THE BUTTERFLY PAPILIO DARDANUS C. A. CLARKE and P. M. SHEPPARD Departments of Medicine and Zoology, University of Liverpool Received23.V.59 1.INTRODUCTION WHENBatesputforward the mimicry hypothesis which bears his name, Darwin (1872), although accepting it, had some difficulty in explaining the evolution of the mimetic resemblance of several distinct species to one distasteful model by a series of small changes, a require- ment of his general theory of evolution. He said "it is necessary to suppose in some cases that ancient members belonging to several distinct groups, before they had diverged to their present extent, accidentally resembled a member of another and protected group in a sufficient degree to afford some slight protection; this having given the basis for the subsequent acquisition of the most perfect resemb- lance ". Punnett (1915) realised that the difficulty is even more acute when one is dealing with a polymorphic species whose forms mimic very distantly related models. Knowing that, in those butterflies which had been investigated genetically, the forms differed by single allelomorphs he concluded that the mimicry did not evolve gradually and did not confer any advantage or disadvantage to the individual. He argued that an allelomorph arises at a single step by mutation and that therefore the mimicry also arises by chance at a single step. Goldschmidt (x) although not denying that mimicry confers some advantage to its possessors also maintained that the resemblance arises fully perfected by a single mutation of a gene distinct from that producing the colour pattern in the model, but producing a similar effect in the mimic. -
African Butterfly News!
LATE WINTER EDITION: JULY / AUGUST AFRICAN 2017-4 THE BUTTERFLY LEPIDOPTERISTS’ SOCIETY OF AFRICA NEWS LATEST NEWS Welcome to the Late Winter edition of African Butterfly News! African Butterfly News celebrates its first year of existence; the first edition, 2016-5, was circulated in September last year. The photographic competition commenced in August 2016, so the annual award will be made in the next, Spring Edition – for purposes of the photographic competition, the season starts in August and ends in July. A reminder that the newsletter is circulated every two months: Late Summer (January and February) – circulated in January Autumn (March and April) – circulated in March Early Winter (May and June) – circulated in May Late Winter (July and August) – circulated in July Spring (September and October) – circulated in September Early Summer (November and December) – circulated in November You will all be aware of the devastating fires that the southern Cape experienced in June. Dave and Hanna Edge, LepSoc Africa’s Treasurer and Membership Secretary respectively, were caught up in this drama, and had to evacuate their house (refer to Dave’s eyewitness account below). Fortunately, the building survived the fire, although the nearby Brenton Blue Reserve was incinerated. All fences, sign boards and marker-posts were destroyed – it is hoped that some larvae or pupae of the Brenton Blue (Orachrysops niobe) are still alive, safely underground. See a report under COREL under the “Projects” section. Some of you may have seen an article in the Sunday Times, by Aaron Hyman, a friend of Christopher Dobson. This magazine relies on material from you, the members of LepSoc Africa. -
Check-List of the Butterflies of the Kakamega Forest Nature Reserve in Western Kenya (Lepidoptera: Hesperioidea, Papilionoidea)
Nachr. entomol. Ver. Apollo, N. F. 25 (4): 161–174 (2004) 161 Check-list of the butterflies of the Kakamega Forest Nature Reserve in western Kenya (Lepidoptera: Hesperioidea, Papilionoidea) Lars Kühne, Steve C. Collins and Wanja Kinuthia1 Lars Kühne, Museum für Naturkunde der Humboldt-Universität zu Berlin, Invalidenstraße 43, D-10115 Berlin, Germany; email: [email protected] Steve C. Collins, African Butterfly Research Institute, P.O. Box 14308, Nairobi, Kenya Dr. Wanja Kinuthia, Department of Invertebrate Zoology, National Museums of Kenya, P.O. Box 40658, Nairobi, Kenya Abstract: All species of butterflies recorded from the Kaka- list it was clear that thorough investigation of scientific mega Forest N.R. in western Kenya are listed for the first collections can produce a very sound list of the occur- time. The check-list is based mainly on the collection of ring species in a relatively short time. The information A.B.R.I. (African Butterfly Research Institute, Nairobi). Furthermore records from the collection of the National density is frequently underestimated and collection data Museum of Kenya (Nairobi), the BIOTA-project and from offers a description of species diversity within a local literature were included in this list. In total 491 species or area, in particular with reference to rapid measurement 55 % of approximately 900 Kenyan species could be veri- of biodiversity (Trueman & Cranston 1997, Danks 1998, fied for the area. 31 species were not recorded before from Trojan 2000). Kenyan territory, 9 of them were described as new since the appearance of the book by Larsen (1996). The kind of list being produced here represents an information source for the total species diversity of the Checkliste der Tagfalter des Kakamega-Waldschutzge- Kakamega forest. -
Mimicry - Ecology - Oxford Bibliographies 12/13/12 7:29 PM
Mimicry - Ecology - Oxford Bibliographies 12/13/12 7:29 PM Mimicry David W. Kikuchi, David W. Pfennig Introduction Among nature’s most exquisite adaptations are examples in which natural selection has favored a species (the mimic) to resemble a second, often unrelated species (the model) because it confuses a third species (the receiver). For example, the individual members of a nontoxic species that happen to resemble a toxic species may dupe any predators by behaving as if they are also dangerous and should therefore be avoided. In this way, adaptive resemblances can evolve via natural selection. When this phenomenon—dubbed “mimicry”—was first outlined by Henry Walter Bates in the middle of the 19th century, its intuitive appeal was so great that Charles Darwin immediately seized upon it as one of the finest examples of evolution by means of natural selection. Even today, mimicry is often used as a prime example in textbooks and in the popular press as a superlative example of natural selection’s efficacy. Moreover, mimicry remains an active area of research, and studies of mimicry have helped illuminate such diverse topics as how novel, complex traits arise; how new species form; and how animals make complex decisions. General Overviews Since Henry Walter Bates first published his theories of mimicry in 1862 (see Bates 1862, cited under Historical Background), there have been periodic reviews of our knowledge in the subject area. Cott 1940 was mainly concerned with animal coloration. Subsequent reviews, such as Edmunds 1974 and Ruxton, et al. 2004, have focused on types of mimicry associated with defense from predators. -
Catalogue of the Type Specimens of Lepidoptera Rhopalocera in the Hill Museum
Original from and digitized by National University of Singapore Libraries Original from and digitized by National University of Singapore Libraries Original from and digitized by National University of Singapore Libraries Original from and digitized by National University of Singapore Libraries CATALOGUE OF THE Type Specimens of Lepidoptera Rhopalocera IN THE HILL MUSEUM BY A. G. GABRIEL, F.E.S. Issued June, 1932 LONDON JOHN BALE, SONS & DANIELSSON, LTD. 83-91, GBEAT TITCHFIELD STEEET, OXEOED STEEET, W. 1 1932 Price 20/- Original from and digitized by National University of Singapore Libraries Unfortunately Mr. Joicey did not live to see the publication of this Catalogue. It will however remain, together with the four completed volumes of the " Bulletin of the Hill Museum," as a lasting memorial to to the magnificent collection of Lepidoptera amassed by Mr. Joicey, and to the work carried out at the Hill Museum under his auspices. G. Talbot. Original from and digitized by National University of Singapore Libraries CATALOGUE OF THE TYPE SPECIMENS OF LEPIDOPTERA RHOPALOCERA IN THE HILL MUSEUM. By A. G. GABRIEL, F.E.S. INTRODUCTION BY G. TALBOT. It is important to know exactly where type specimens are to be found. The British Museum set an example by publishing catalogues of some of their Rhopalocera types, and we hope this will be continued. Mr. Gabriel, who was responsible for that work, has been asked by Mr. Joicey to prepare a catalogue for the Hill Museum. The original description of almost every name in this catalogue has been examined for the correct reference, and where the sex or habitat was wrongly quoted, the necessary correction has been made. -
Adaptations for Survival: Symbioses, Camouflage & Mimicry
Adaptations for Survival: Symbioses, Camouflage & Mimicry OCN 201 Biology Lecture 11 http://www.berkeley.edu/news/media/releases/2005/03/24_octopus.shtml Symbiosis • Parasitism - negative effect on host • Commensalism - no effect on host • Mutualism - both parties benefit Often involves food but benefits may also include protection from predators, dispersal, or habitat Parasitism Leeches (Segmented Worms) Tongue Louse (Crustacean) Nematodes (Roundworms) Commensalism or Mutualism? Anemone shrimp http://magma.nationalgeographic.com/ Anemone fish http://www.scuba-equipment-usa.com/marine/APR04/ Mutualism Cleaner Shrimp and Eel http://magma.nationalgeographic.com/ Whale Barnacles & Lice What kinds of symbioses are these? Commensal Parasite Camouflage • Often important for predators and prey to avoid being seen • Predators to catch their prey and prey to hide from their predators • Camouflage: Passive or adaptive Passive Camouflage Countershading Sharks Birds Countershading coloration of the Caribbean reef shark © George Ryschkewitsch Fish JONATHAN CHESTER Mammals shiftingbaselines.org/blog/big_tuna.jpg http://www.nmfs.noaa.gov/pr/images/cetaceans/orca_spyhopping-noaa.jpg Passive Camouflage http://www.cspangler.com/images/photos/aquarium/weedy-sea-dragon2.jpg Adaptive Camouflage Camouflage by Accessorizing Decorator crab Friday Harbor Marine Health Observatory http://www.projectnoah.org/ Camouflage by Mimicry http://www.berkeley.edu/news/media/releases/2005/03/24_octopus.shtml Mimicry • Animals can gain protection (or even access to prey) by looking -
OBITUARIES Sir Edward Poulton, F.R.S
No. 3870, jANUARY 1, 1944 NATURE 15 the University of Edinburgh, previously held by a tragic death, and his successor, F. Hasenohrl, was Black. To him we owe the discovery of the maximum killed in action on the Italian front in 1915. The density of water. The centenary of John Dalton falls chemists born in 1844 include Prof. J. Emerson on July 27 of this year, but any commemoration Reynolds (died 1920), who occupied for twenty-eight must inevitably be clouded over by the results of years the chair of chemistry in the University of the air raid of December 24, 1940, when the premises Dublin, and Ferdinand Hurter (died 1898), a native of the Manchester Literary and Philosophical Society of Schaffhausen, Switzerland, who came to England were completely destroyed. From 1817 until 1844 in 1867 and became principal chemist to the United DaJton was president of the Society, and within its Alkali Company. Among astronomers, Prof. W. R. walls he taught, lectured and experimented. The Brooks (died 1921) of the United States was famous Society had an unequalled collection of his apparatus, as a 'comet hunter'. Charles Trepied (died 1907) was but after digging among the ruins the only things for many years director of the Observatory at found were his gold watch, a spark eudiometer and Bouzariah, eleven kilometres from Algiers, while some charred remains of letters and note-books. A Annibale Ricco (died 1919), though he began life as month after Dalton passed away in Manchester, an engineer, for nineteen years directed the observa Francis Baily died in London, after a life devoted to tory of Catania and Etna, his special subject being astronomy and kindred subjects. -
An Account of the Butterflies of the Genus Charaxes in the Collection of the British Museum
318 DR. A. 0. BUTLER ON THE EXPLdNATION OP THE PLATES, PIATEXV. Figs. 1, 3, 5. Hypolimnas misippus, 2 (3 forms). Pig. 2. Danais chrysippus. 4. ,, dorippus. 6. I, alc@pus. PLATEXVI. Pig. 1. Eiiplna Hopfferi. Fig. 2. Hypolininas po!z/nieiia. 4. ,, p,yr.q:Vion,d. 3. ,1 sco~l"s,8. 6. ,, I, 2, 6. 3, 9, $2 , PLATFJXVII. Pig. 2. Euplcea polgmena. Fig. 1. Hypolimicas, sp. 4. Amauris doo?~iinicantcs. 3. ,( mnrginnlis. 6. ,, egialea. 5. ,, ddia. An Account of the Butterflies of the Genus Charaxes in the Collection of the British Museum. By ARTHURG. BUTLER, Ph.D., &c., Senior Assiutant-Keeper, Zoological Department. [Read 7th November, 1895.1 ONE of the first genera which 1 ever otudieil, and the Erst which I monographed, was the geiius Charaxes, a paper ou which I published in 1865 in the ' Proceedings ot the Zoological Society,' in which I recorded sixty-eight species (two of which, however, were noted as doubtful and ere subsequently suppremed) : the present paper enumerates no fewer than one hundred and fifty- nine. I have followed Prof. Aurivillius in uuiting Palla to Cliaraxes : if kept separate, it would have to be broken up into several geucra, and Charaxes ithelf would in like inanuer have to be sub- divided ; tliis, indeed, has been done for the Iiidian species by Mr. Moore ; but apart from outline of wing 1have been unable to discover any constant structural characters ou which to base these genera. That wing-outline in Charaxes is not of generic im- portance seems clear, from the fact that (i.) in iuany of the species it differs to an extraordinary degree in the sezes ; (ii.) the most nearly related species (as, for instance, C. -
Mt Mabu, Mozambique: Biodiversity and Conservation
Darwin Initiative Award 15/036: Monitoring and Managing Biodiversity Loss in South-East Africa's Montane Ecosystems MT MABU, MOZAMBIQUE: BIODIVERSITY AND CONSERVATION November 2012 Jonathan Timberlake, Julian Bayliss, Françoise Dowsett-Lemaire, Colin Congdon, Bill Branch, Steve Collins, Michael Curran, Robert J. Dowsett, Lincoln Fishpool, Jorge Francisco, Tim Harris, Mirjam Kopp & Camila de Sousa ABRI african butterfly research in Forestry Research Institute of Malawi Biodiversity of Mt Mabu, Mozambique, page 2 Front cover: Main camp in lower forest area on Mt Mabu (JB). Frontispiece: View over Mabu forest to north (TT, top); Hermenegildo Matimele plant collecting (TT, middle L); view of Mt Mabu from abandoned tea estate (JT, middle R); butterflies (Lachnoptera ayresii) mating (JB, bottom L); Atheris mabuensis (JB, bottom R). Photo credits: JB – Julian Bayliss CS ‒ Camila de Sousa JT – Jonathan Timberlake TT – Tom Timberlake TH – Tim Harris Suggested citation: Timberlake, J.R., Bayliss, J., Dowsett-Lemaire, F., Congdon, C., Branch, W.R., Collins, S., Curran, M., Dowsett, R.J., Fishpool, L., Francisco, J., Harris, T., Kopp, M. & de Sousa, C. (2012). Mt Mabu, Mozambique: Biodiversity and Conservation. Report produced under the Darwin Initiative Award 15/036. Royal Botanic Gardens, Kew, London. 94 pp. Biodiversity of Mt Mabu, Mozambique, page 3 LIST OF CONTENTS List of Contents .......................................................................................................................... 3 List of Tables .............................................................................................................................