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Hyperspectral Imaging of Cuttlefish Camouflage Indicates Good Color
Hyperspectral imaging of cuttlefish camouflage indicates good color match in the eyes of fish predators Chuan-Chin Chiaoa,b,1, J. Kenneth Wickiserc, Justine J. Allena,d, Brock Genterc, and Roger T. Hanlona,e aMarine Biological Laboratory, Woods Hole, MA 02543; bDepartment of Life Science, National Tsing Hua University, Hsinchu, Taiwan 30013; cDepartment of Chemistry and Life Science, United States Military Academy, West Point, NY 10996; and Departments of dNeuroscience and eEcology and Evolutionary Biology, Brown University, Providence, RI 02912 Edited* by A. Kimball Romney, University of California, Irvine, CA, and approved April 13, 2011 (received for review December 30, 2010) Camouflage is a widespread phenomenon throughout nature and hyperspectral image is typically captured by scanning the 2D an important antipredator tactic in natural selection. Many visual sensor either spectrally or spatially in the third dimension to predators have keen color perception, and thus camouflage acquire the 3D data cube of which the z axis normally represents patterns should provide some degree of color matching in addition the reflectance spectrum of the corresponding point in the scene. to other visual factors such as pattern, contrast, and texture. Camouflage is the primary defense of coleoid cephalopods Quantifying camouflage effectiveness in the eyes of the predator (octopus, squid, and cuttlefish) and their rapidly adaptable body is a challenge from the perspectives of both biology and optical patterning system is among the most sophisticated in the animal imaging technology. Here we take advantage of hyperspectral kingdom (21–23). The expression of camouflaged body patterns imaging (HSI), which records full-spectrum light data, to simulta- in cuttlefish is a visually driven behavior. -
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. -
Peter Kropotkin and the Social Ecology of Science in Russia, Europe, and England, 1859-1922
THE STRUGGLE FOR COEXISTENCE: PETER KROPOTKIN AND THE SOCIAL ECOLOGY OF SCIENCE IN RUSSIA, EUROPE, AND ENGLAND, 1859-1922 by ERIC M. JOHNSON A DISSERTATION SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (History) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) May 2019 © Eric M. Johnson, 2019 The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the dissertation entitled: The Struggle for Coexistence: Peter Kropotkin and the Social Ecology of Science in Russia, Europe, and England, 1859-1922 Submitted by Eric M. Johnson in partial fulfillment of the requirements for the degree of Doctor of Philosophy in History Examining Committee: Alexei Kojevnikov, History Research Supervisor John Beatty, Philosophy Supervisory Committee Member Mark Leier, History Supervisory Committee Member Piers Hale, History External Examiner Joy Dixon, History University Examiner Lisa Sundstrom, Political Science University Examiner Jaleh Mansoor, Art History Exam Chair ii Abstract This dissertation critically examines the transnational history of evolutionary sociology during the late-nineteenth and early-twentieth centuries. Tracing the efforts of natural philosophers and political theorists, this dissertation explores competing frameworks at the intersection between the natural and human sciences – Social Darwinism at one pole and Socialist Darwinism at the other, the latter best articulated by Peter Alexeyevich Kropotkin’s Darwinian theory of mutual aid. These frameworks were conceptualized within different scientific cultures during a contentious period both in the life sciences as well as the sociopolitical environments of Russia, Europe, and England. This cross- pollination of scientific and sociopolitical discourse contributed to competing frameworks of knowledge construction in both the natural and human sciences. -
Developmental Effects of Environmental Light on Male Nuptial Coloration in Lake Victoria Cichlid Fish
Developmental effects of environmental light on male nuptial coloration in Lake Victoria cichlid fish Daniel Shane Wright1, Emma Rietveld1,2 and Martine E. Maan1 1 Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands 2 University of Applied Sciences van Hall Larenstein, Leeuwarden, Netherlands ABSTRACT Background. Efficient communication requires that signals are well transmitted and perceived in a given environment. Natural selection therefore drives the evolution of different signals in different environments. In addition, environmental heterogeneity at small spatial or temporal scales may favour phenotypic plasticity in signaling traits, as plasticity may allow rapid adjustment of signal expression to optimize transmission. In this study, we explore signal plasticity in the nuptial coloration of Lake Victoria cichlids, Pundamilia pundamilia and Pundamilia nyererei. These two species differ in male coloration, which mediates species-assortative mating. They occur in adjacent depth ranges with different light environments. Given the close proximity of their habitats, overlapping at some locations, plasticity in male coloration could contribute to male reproductive success but interfere with reproductive isolation. Methods. We reared P. pundamilia, P. nyererei, and their hybrids under light conditions mimicking the two depth ranges in Lake Victoria. From photographs, we quantified the nuptial coloration of males, spanning the entire visible spectrum. In experiment 1, we examined developmental colour plasticity by comparing sibling males reared in each light condition. In experiment 2, we assessed colour plasticity in adulthood, by switching adult males between conditions and tracking coloration for 100 days. Results. We found that nuptial colour in Pundamilia did respond plastically to our light manipulations, but only in a limited hue range. -
Book Review of "My Life" by Alfred Russel Wallace
202 Alfred Russel Wallace. ALFRED RUSSEL WALLACE: SCIENTIST, PHILOSO- PHER AND HUMANITARIAN .* I. AN INFORMING AND INSPIRING LIFE rianism has ever matched his passion for truth. -STORY. The present autobiography has, we think, a fault common to most large two-volume HERE are few forms of literature so T worksof this character. It dwells in a some- helpful to general readers, and espec what too extended manner on unimportant ially to young men and women, as autobiogra penonal details and facts relating to the fam- phies of the few really great men of all ages, ily and friends of the author. Allthese things when the life-stories are marked by simplicity, while making the work especially precious directness and sincerity. They bring us into to family and friends, hold no personal inter personalrapport with the aristocracy of brain est for the general reader and tend to take and soul-the men who have enlightened and from the interest and value of the work. This lifted the world. Doubly valuable are these fault, however, is insignificant in comparison works when the men in question have lived with the general excellence of the life story. fine, true, simple and noble lives while in a which merits the widest reading. large way pushing forward the frontiers of human knowledge, enriching all future ages II. THE EARLY LIFE OF DR. WALLACE. by calling forth great truths that have hitherto The careers of few men of the nineteenth slumbered in the womb of mystery. century are so rich in lessons of worth for the In the recently published autobiography thoughtful young men and women of our day of Dr. -
SEASMART Program Final Report Annex
Creating a Sustainable, Equitable & Affordable Marine Aquarium Industry in Papua New Guinea | 1 Table of Contents Executive Summary ............................................................................................................ 7 Introduction ....................................................................................................................... 15 Contract Deliverables ........................................................................................................ 21 Overview of PNG in the Marine Aquarium Trade ............................................................. 23 History of the Global Marine Aquarium Trade & PNG ............................................ 23 Extent of the Global Marine Aquarium Trade .......................................................... 25 Brief History of Two Other Coastal Fisheries in PNG ............................................ 25 Destructive Potential of an Inequitable, Poorly Monitored & Managed Nature of the Trade Marine Aquarium Fishery in PNG ........................... 26 Benefit Potential of a Well Monitored & Branded Marine Aquarium Trade (and Other Artisanal Fisheries) in PNG ................................................................... 27 PNG Way to Best Business Practice & the Need for Effective Branding .............. 29 Economic & Environmental Benefits....................................................................... 30 Competitive Advantages of PNG in the Marine Aquarium Trade ................................... 32 Pristine Marine -
Playing with Matches
PLAYING WITHHybrid MATCHES: They can fuel the fires of conservation or burn everything to the ground 62 CORAL Clownfishes by Matt Pedersen RILEY COULDN’T UNDERSTAND IT: her mated pair of “Tomato Clownfish” kept spitting out a strange mix of offspring, some with black ventral and anal fins, others with white tails, but otherwise looking like their red parents. Meanwhile, Brennon struggled to identify the clownfishes he had picked up from a distant aquarium shop on a road trip; the label said “Onyx Percula,” but the fish lacked the bright orange eye that Amphiprion percula should have. Melanie was disappointed when her “True Sebae” clownfish never grew their full vertical bars and always seemed to have black tails with a hint of a yellow tail bar instead of the all-yellow tail she had come to expect. Although Riley, Brennon, and Melanie are not their real names (I am trying to protect the innocent here), these dramatizations are all too real. Hobbyists (and, to be honest, some peo- ple in the marine livestock trade) have often White-Bonnet Anemonefish (Amphiprion leucokranos) in Milne Bay, Papua New Guinea. This a suspected hybrid of A. chrysopterus and A. sandaracinos. © GARY BELL / OCEANWIDEIMAGES.COM / BELL GARY © CORAL 63 2014 HYBRID CLOWNFISH REVIEW If the world of clownfish breeding and mar- keting seems more than bit frenzied at the moment, it helps to know that hybrid anem- onefishes can be sorted into four groups. “Natural” Hybrids Once again, as with “designer” morphs that turn up in natural wild populations of Am- phiprion and Premnas spp. -
ผลของแคโรทีนอยด์สังเคราะห์ต่อการเพิ่มสีในปลาการ์ตูนแดง (Premnas Biaculeatus Bloch, 1790)
ผลของแคโรทีนอยด์สังเคราะห์ต่อการเพิ่มสีในปลาการ์ตูนแดง (Premnas biaculeatus Bloch, 1790) นงลักษณ์ ส าราญราษฎร์ วิทยานิพนธ์นี้เป็นส่วนหนึ่งของการศึกษาตามหลักสูตรวิทยาศาสตรมหาบัณฑิต สาขาวิชาวาริชศาสตร์ คณะวิทยาศาสตร์ มหาวิทยาลัยบูรพา มกราคม 2561 ลิขสิทธิ์เป็นของมหาวิทยาลยั บรู พา กิตติกรรมประกาศ วิทยานิพนธ์ฉบับนี้ส าเร็จลงได้ด้วยความกรุณาจากผู้ช่วยศาสตราจารย์ ดร.สมถวิล จริตควร อาจารย์ที่ปรึกษาหลัก ที่กรุณาให้ค าปรึกษาแนะน าแนวทางที่ถูกต้อง ตลอดจนแก้ไข ข้อบกพร่องต่าง ๆ ด้วยความละเอียดถี่ถ้วนและเอาใจใส่ด้วยดีเสมอมา ผู้วิจัยรู้สึกซาบซึ้งเป็น อย่างยิ่ง จึงขอกราบขอบพระคุณเป็นอย่างสูงไว้ ณ โอกาสนี้ ขอกราบขอบพระคุณ ดร.พิเชต พลายเพชร ที่ให้ความกรุณามาเป็นประธาน กรรมการสอบ พร้อมแนะน าข้อแก้ไขต่าง ๆ และตรวจทานแก้ไขวิทยานิพนธ์นี้จนท าให้ส าเร็จ สมบูรณ์ยิ่งขึ้น ขอกราบขอบพระคุณ ดร.จริยาวดี สุริยพันธุ์ และ ดร.สลิล ชั้นโรจน์ ที่ให้ความกรุณามา เป็นกรรมการสอบ และช่วยเสนอแนะข้อแก้ไขต่าง ๆ เพื่อให้วิทยานิพนธ์ฉบับนี้สมบูรณ์ นอกจากนี้ ขอขอบพระคุณเจ้าหน้าที่ศูนย์วิจัยและพัฒนาเทคโนโลยีอาหารสัตว์น ้าชลบุรี และภาควิชา วาริชศาสตร์ คณะวิทยาศาสตร์ มหาวิทยาลัยบูรพา ที่อ านวยสถานที่ในการทดลอง และให้ความ ร่วมมือเป็นอย่างดีในการเก็บรวบรวมข้อมูลที่ใช้ในการวิจัย ท าให้วิทยานิพนธ์ฉบับนี้ส าเร็จได้ด้วยดี งานวิจัยครั้งนี้ส่วนหนึ่งได้รับการสนับสนุนทุนวิทยานิพนธ์นิสิตระดับบัณฑิตศึกษา คณะ วิทยาศาสตร์ มหาวิทยาลัยบูรพา จึงขอขอบพระคุณ ณ ที่นี้ด้วย ขอกราบขอบพระคุณ บิดา มารดา และญาติพี่น้องที่คอยให้ความรัก ความห่วงใย ให้ ความช่วยเหลือตลอดเป็นก าลังใจในการท าวิทยานิพนธ์ฉบับนี้ส าเร็จได้ด้วยดี คุณค่าและประโยชน์ของวิทยานิพนธ์ฉบับนี้ ผู้วิจัยขอมอบเป็นกตัญญูกตเวทิตาแด่ บุพการี บูรพาจารย์ -
7 X 11.5 Long Title.P65
Cambridge University Press 978-0-521-15257-0 - Animal Camouflage: Mechanisms and Function Edited by Martin Stevens and Sami Merilaita Excerpt More information 1 Animal camouflage Function and mechanisms Martin Stevens and Sami Merilaita 1.1 Introduction One cannot help being impressed by the near-perfect camouflage of a moth matching the colour and pattern of the tree on which it rests, or of the many examples in nature of animals resembling other objects in order to be hidden (Figure 1.1). The Nobel Prize winning ethologist Niko Tinbergen referred to such moths as ‘bark with wings’ (Tinbergen 1974), such was the impressiveness of their camouflage. On a basic level, camouflage can be thought of as the property of an object that renders it difficult to detect or recognise by virtue of its similarity to its environment (Stevens & Merilaita 2009a). The advantage of being concealed from predators (or sometimes from prey) is easy to understand, and camouflage has long been used as a classical example of natural selection. Perhaps for this reason, until recently, camouflage was subject to little rigorous experimentation – its function and value seemed obvious. However, like any theory, the possible advantages of camouflage, and how it works, need rigorous scientific testing. Furthermore, as we shall see below and in this book in general, the concept of concealment is much richer, more complex and interesting than scientists originally thought. The natural world is full of amazing examples of camouflage, with the strategies employed diverse and sometimes extraordinary (Figure 1.2). These include using mark- ings to match the colour and pattern of the background, as do various moths (e.g. -
Alfred Russel Wallace
ALFRED RUSSEL WALLACE By MARTIN FICHMAN1 /?y-/» Glendon College, York University, Toronto TWAYNE PUBLISHERS A DIVISION OF G. K. HALL & CO., BOSTON 1981 Contents About the Author Preface Chronology 1. Introduction 15 2. Natural Selection 29 3. Biogeography 60 4. Human Evolution 99 5. Social and Political Concerns 122 6. Conclusion 159 Notes and References 163 Selected Bibliography 174 Index 183 Alfred Russel Wallace About the Author Bom in Brooklyn, New York, in 1944, Martin Fichman received the B.Sc. degree from the Polytechnic Institute of New York and the A.M. and Ph.D. degrees from Harvard University and is currently associate professor of History and Natural Science at York University (Glendon College), Toronto. He has pub¬ lished articles on Alfred Russel Wallace and on the history of chemistry and is a contributor to the Dictionary of Scientific Biography. He is presently working on a study of the inter¬ relation between biological and sociopolitical ideas in the writings of late nineteenth-century evolutionists. Preface Alfred Russel Wallace was among the most brilliant Victorian naturalists and codiscoverer of one of the principal scientific achievements of the nineteenth century, the theory of natural selection. Although his accomplishments were fully recognized by his contemporaries, his reputation diminished somewhat in this century. Paradoxically, this situation has arisen partly through Wallace’s persistent efforts to equate evolution by natural selection with the name of Charles Darwin in the public mind. I have, therefore, critically analyzed Wallace’s major theoretical advances in order to clarify his central role in the history of evolutionary biology. Given the multiplicity of his scientific inter¬ ests, I have focused on one aspect—his biogeographical system— which best exemplifies the broad power of his evolutionary syn¬ thesis. -
History of Genetics Book Collection Catalogue
History of Genetics Book Collection Catalogue Below is a list of the History of Genetics Book Collection held at the John Innes Centre, Norwich, UK. For all enquires please contact Mike Ambrose [email protected] +44(0)1603 450630 Collection List Symposium der Deutschen Gesellschaft fur Hygiene und Mikrobiologie Stuttgart Gustav Fischer 1978 A69516944 BOOK-HG HG œ.00 15/10/1996 5th international congress on tropical agriculture 28-31 July 1930 Brussels Imprimerie Industrielle et Finangiere 1930 A6645004483 œ.00 30/3/1994 7th International Chromosome Conference Oxford Oxford 1980 A32887511 BOOK-HG HG œ.00 20/2/1991 7th International Chromosome Conference Oxford Oxford 1980 A44688257 BOOK-HG HG œ.00 26/6/1992 17th international agricultural congress 1937 1937 A6646004482 œ.00 30/3/1994 19th century science a selection of original texts 155111165910402 œ14.95 13/2/2001 150 years of the State Nikitsky Botanical Garden bollection of scientific papers. vol.37 Moscow "Kolos" 1964 A41781244 BOOK-HG HG œ.00 15/10/1996 Haldane John Burdon Sanderson 1892-1964 A banned broadcast and other essays London Chatto and Windus 1946 A10697655 BOOK-HG HG œ.00 15/10/1996 Matsuura Hajime A bibliographical monograph on plant genetics (genic analysis) 1900-1929 Sapporo Hokkaido Imperial University 1933 A47059786 BOOK-HG HG œ.00 15/10/1996 Hoppe Alfred John A bibliography of the writings of Samuel Butler (author of "erewhon") and of writings about him with some letters from Samuel Butler to the Rev. F. G. Fleay, now first published London The Bookman's Journal -
COLORS of NATURE / KIT 3 How Do Art and Science Help Us Understand the World Around Us?
Kit 3 / Overview COLORS OF NATURE / KIT 3 KIT 3 OVERVIEW KIT 3 OVERVIEW BIOLOGY AND ART KIT 3 OVERVIEW HOW DOES COLOR HELP US UNDERSTAND THE LIVING WORLD AROUND US? The Colors of Nature Kits are designed to help students explore the question: how do art and science help us understand the world around us? Through a series of investigations students become familiar with core practices of art and science, developing scientific and artistic habits of mind that empower them to engage in self-directed inquiry through the generation and evaluation of ideas. Kit 3 explores this question through the lens of art and biology: the study of life and living organisms. A STEAM APPROACH TO EDUCATION (Science, Technology, Engineering, Art, Math) STEAM is an educational philosophy that seeks to balance the development of divergent and convergent thinking by integrating the arts with traditional STEM fields (Science, Technology, Engineering, Math). In the STEAM approach to learning, students engage in projects and experiments that reflect the transdisciplinary nature of real-world problem solving. Rather than focusing on the delivery and memorization of content as isolated facts or repetition of rote procedures, STEAM seeks to develop scientific and artistic habits of mind and the confidence to engage in self-directed inquiry by familiarizing students with the core practices of art and science in an open and exploratory environment. The STEAM investigations in this kit are designed to foster creative engagement by promoting individual agency and establishing meaningful connections to students’ own lives. For additional teaching resources visit www.colorsofnature.org Kit 3 / Overview / Page 2 COLORS OF NATURE / KIT 3 How do art and science help us understand the world around us? INTRODUCTION / FOSTERING ENGAGEMENT IN ART AND SCIENCE STEAM ART / SCIENCE OVERLAP ENGAGEMENT IN SCIENCE PRACTICE Both science and art seek to broaden our Young children engage naturally in core science Around age 9, as social awareness increases, children understanding of the world around us.