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Eavesdropping on Visual Secrets
Evol Ecol DOI 10.1007/s10682-013-9656-9 REVIEW ARTICLE Eavesdropping on visual secrets Nicholas C. Brandley • Daniel I. Speiser • So¨nke Johnsen Received: 22 October 2012 / Accepted: 28 May 2013 Ó Springer Science+Business Media Dordrecht 2013 Abstract Private communication may benefit signalers by reducing the costs imposed by potential eavesdroppers such as parasites, predators, prey, or rivals. It is likely that private communication channels are influenced by the evolution of signalers, intended receivers, and potential eavesdroppers, but most studies only examine how private communication benefits signalers. Here, we address this shortcoming by examining visual private com- munication from a potential eavesdropper’s perspective. Specifically, we ask if a signaler would face fitness consequences if a potential eavesdropper could detect its signal more clearly. By integrating studies on private communication with those on the evolution of vision, we suggest that published studies find few taxon-based constraints that could keep potential eavesdroppers from detecting most hypothesized forms of visual private com- munication. However, we find that private signals may persist over evolutionary time if the benefits of detecting a particular signal do not outweigh the functional costs a potential eavesdropper would suffer from evolving the ability to detect it. We also suggest that all undetectable signals are not necessarily private signals: potential eavesdroppers may not benefit from detecting a signal if it co-occurs with signals in other more detectable sensory modalities. In future work, we suggest that researchers consider how the evolution of potential eavesdroppers’ sensory systems influences private communication. Specifically, Electronic supplementary material The online version of this article (doi:10.1007/s10682-013-9656-9) contains supplementary material, which is available to authorized users. -
Polarisation Signals
Chapter 19 Polarisation Signals Justin Marshall, Nicholas Roberts, and Thomas Cronin Abstract Humans are fascinated by the colour vision, colour signals and ‘dress codes’ of other animals as we can see colour. This property of light may be useful for increasing the contrast of objects during foraging, defence, camouflage and sexual communication. New research, largely from the last decade, now suggests that polarisation is a quality of light also used in signalling and may contain information at least as rich as colour. As many of the chapters in this book detail, polarisation in animals is often associated with navigation, habitat choice and other tasks that require large-field processing. That is, a wide area of the light field, such as the celestial hemisphere, is sampled from. Polarisation vision that recognises and extracts information from objects is most likely confined to processing through small numbers of receptors. This chapter examines the latest evidence on polarised signals from animals and their environments, including both linear and circular polarisations. Both aquatic and terrestrial examples are detailed, but with emphasis on life underwater as it is here that many recent discoveries have been made. Behaviour relative to signals is described where known, and suggestions are given as to how these signals are received and processed by the visual system. Camouflage as well as signalling in this light domain is also considered, with the inevitable conclusion for this new field that we need to know more before solid conclusions can be drawn. J. Marshall (*) Sensory Neurobiology Group, Queensland Brain Institute, University of Queensland, St Lucia, Brisbane, QLD 4072, Australia e-mail: [email protected] N. -
Circularly Polarized Reflection from the Scarab Beetle Chalcothea Smaragdina: Rsfs.Royalsocietypublishing.Org Light Scattering by a Dual Photonic Structure
Circularly polarized reflection from the scarab beetle Chalcothea smaragdina: rsfs.royalsocietypublishing.org light scattering by a dual photonic structure Luke T. McDonald1,2, Ewan D. Finlayson1, Bodo D. Wilts3 and Pete Vukusic1 Research 1Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, UK 2School of Biological, Earth and Environmental Sciences, University College Cork, North Mall Campus, Cork, Cite this article: McDonald LT, Finlayson ED, Republic of Ireland Wilts BD, Vukusic P. 2017 Circularly polarized 3Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland reflection from the scarab beetle Chalcothea LTM, 0000-0003-0896-1415; EDF, 0000-0002-0433-5313; BDW, 0000-0002-2727-7128 smaragdina: light scattering by a dual photonic structure. Interface Focus 7: 20160129. Helicoidal architectures comprising various polysaccharides, such as chitin http://dx.doi.org/10.1098/rsfs.2016.0129 and cellulose, have been reported in biological systems. In some cases, these architectures exhibit stunning optical properties analogous to ordered cholesteric liquid crystal phases. In this work, we characterize the circularly One contribution of 17 to a theme issue polarized reflectance and optical scattering from the cuticle of the beetle ‘Growth and function of complex forms in Chalcothea smaragdina (Coleoptera: Scarabaeidae: Cetoniinae) using optical biological tissue and synthetic self-assembly’. experiments, simulations and structural analysis. The selective reflection of left-handed circularly polarized light is attributed to a Bouligand-type Subject Areas: helicoidal morphology within the beetle’s exocuticle. Using electron microscopy to inform electromagnetic simulations of this anisotropic strati- biomaterials fied medium, the inextricable connection between the colour appearance of C. -
Butterflies and Moths of San Bernardino County, California
Heliothis ononis Flax Bollworm Moth Coptotriche aenea Blackberry Leafminer Argyresthia canadensis Apyrrothrix araxes Dull Firetip Phocides pigmalion Mangrove Skipper Phocides belus Belus Skipper Phocides palemon Guava Skipper Phocides urania Urania skipper Proteides mercurius Mercurial Skipper Epargyreus zestos Zestos Skipper Epargyreus clarus Silver-spotted Skipper Epargyreus spanna Hispaniolan Silverdrop Epargyreus exadeus Broken Silverdrop Polygonus leo Hammock Skipper Polygonus savigny Manuel's Skipper Chioides albofasciatus White-striped Longtail Chioides zilpa Zilpa Longtail Chioides ixion Hispaniolan Longtail Aguna asander Gold-spotted Aguna Aguna claxon Emerald Aguna Aguna metophis Tailed Aguna Typhedanus undulatus Mottled Longtail Typhedanus ampyx Gold-tufted Skipper Polythrix octomaculata Eight-spotted Longtail Polythrix mexicanus Mexican Longtail Polythrix asine Asine Longtail Polythrix caunus (Herrich-Schäffer, 1869) Zestusa dorus Short-tailed Skipper Codatractus carlos Carlos' Mottled-Skipper Codatractus alcaeus White-crescent Longtail Codatractus yucatanus Yucatan Mottled-Skipper Codatractus arizonensis Arizona Skipper Codatractus valeriana Valeriana Skipper Urbanus proteus Long-tailed Skipper Urbanus viterboana Bluish Longtail Urbanus belli Double-striped Longtail Urbanus pronus Pronus Longtail Urbanus esmeraldus Esmeralda Longtail Urbanus evona Turquoise Longtail Urbanus dorantes Dorantes Longtail Urbanus teleus Teleus Longtail Urbanus tanna Tanna Longtail Urbanus simplicius Plain Longtail Urbanus procne Brown Longtail -
Butterflies and Moths of Comal County, Texas, United States
Heliothis ononis Flax Bollworm Moth Coptotriche aenea Blackberry Leafminer Argyresthia canadensis Apyrrothrix araxes Dull Firetip Phocides pigmalion Mangrove Skipper Phocides belus Belus Skipper Phocides palemon Guava Skipper Phocides urania Urania skipper Proteides mercurius Mercurial Skipper Epargyreus zestos Zestos Skipper Epargyreus clarus Silver-spotted Skipper Epargyreus spanna Hispaniolan Silverdrop Epargyreus exadeus Broken Silverdrop Polygonus leo Hammock Skipper Polygonus savigny Manuel's Skipper Chioides albofasciatus White-striped Longtail Chioides zilpa Zilpa Longtail Chioides ixion Hispaniolan Longtail Aguna asander Gold-spotted Aguna Aguna claxon Emerald Aguna Aguna metophis Tailed Aguna Typhedanus undulatus Mottled Longtail Typhedanus ampyx Gold-tufted Skipper Polythrix octomaculata Eight-spotted Longtail Polythrix mexicanus Mexican Longtail Polythrix asine Asine Longtail Polythrix caunus (Herrich-Schäffer, 1869) Zestusa dorus Short-tailed Skipper Codatractus carlos Carlos' Mottled-Skipper Codatractus alcaeus White-crescent Longtail Codatractus yucatanus Yucatan Mottled-Skipper Codatractus arizonensis Arizona Skipper Codatractus valeriana Valeriana Skipper Urbanus proteus Long-tailed Skipper Urbanus viterboana Bluish Longtail Urbanus belli Double-striped Longtail Urbanus pronus Pronus Longtail Urbanus esmeraldus Esmeralda Longtail Urbanus evona Turquoise Longtail Urbanus dorantes Dorantes Longtail Urbanus teleus Teleus Longtail Urbanus tanna Tanna Longtail Urbanus simplicius Plain Longtail Urbanus procne Brown Longtail -
Field Checklist of the Butterflies of Sonora, Mexico
Field Checklist Field Checklist of of the Butterfl ies of Sonora, Mexico The Butterfl ies of Sonora, Mexico List Compiled by Jim P. Brock Checklists available at Mexico Birding Website March 2009 http://MexicoBirding.com Kurt Radamaker Checklist Locality __________________________________ Observer(s) _______________________________ of the 1 Date __________Time ______ Total Species ____ Butterfl ies of Mexico Weather __________________________________ Remarks __________________________________ This checklist is a direct result of the work of Jim P. Brock's col- lecting and research in Sonora, Mexico since 1984. Locality __________________________________ Observer(s) _______________________________ 2 Date __________Time ______ Total Species ____ Weather __________________________________ Remarks __________________________________ Locality __________________________________ Observer(s) _______________________________ 3 Date __________Time ______ Total Species ____ Weather __________________________________ Remarks __________________________________ Locality __________________________________ Observer(s) _______________________________ 4 Date __________Time ______ Total Species ____ Weather __________________________________ Remarks __________________________________ Locality __________________________________ Observer(s) _______________________________ 5 Date __________Time ______ Total Species ____ Weather __________________________________ Booklet Design by Remarks __________________________________ Kurt and Cindy Radamaker March 2009 1 2 -
Coleoptera: Melolonthidae)
Available online at www.sciencedirect.com Revista Mexicana de Biodiversidad Revista Mexicana de Biodiversidad 88 (2017) 820–823 www.ib.unam.mx/revista/ Taxonomy and systematics Description of a new Plusiotis jewel scarab species from Oaxaca, Mexico (Coleoptera: Melolonthidae) Descripción de un nuevo escarabajo gema de Plusiotis de Oaxaca, México (Coleoptera: Melolonthidae) a,∗ b Andrés Ramírez-Ponce , Daniel J. Curoe a Conacyt-Laboratorio Regional de Biodiversidad y Cultivo de Tejidos Vegetales, Instituto de Biología, UNAM, Ex Fábrica San Manuel de Morcóm s/n, San Miguel Contla, 90640 Santa Cruz Tlaxcala, Tlaxcala, Mexico b Schiller 524, Colonia Bosques de Chapultepec, Del. Miguel Hidalgo, 11580 Mexico City, Mexico Received 3 April 2017; accepted 24 July 2017 Available online 28 November 2017 Abstract Plusiotis cosijoezai sp. n. is described from the Sierra Madre del Sur, Oaxaca, in southern México. Habitus and genitalia are illustrated, and diagnostic characters are compared with the closest species, P. lacordairei Boucard. © 2017 Universidad Nacional Autónoma de México, Instituto de Biología. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Keywords: Taxonomy; Rutelini; Scarabaeoidea; New species Resumen Se describe a Plusiotis cosijoezai sp. n. de la sierra Madre del Sur, Oaxaca, al sur de México. Se ilustran el hábito y los genitales, y se presentan los caracteres diagnósticos comparándolos con la especie más similar, P. lacordairei Boucard. © 2017 Universidad Nacional Autónoma de México, Instituto de Biología. Este es un artículo Open Access bajo la licencia CC BY-NC-ND (http://creativecommons.org/licenses/by-nc-nd/4.0/). -
Butterflies and Moths of Pinal County, Arizona, United States
Heliothis ononis Flax Bollworm Moth Coptotriche aenea Blackberry Leafminer Argyresthia canadensis Apyrrothrix araxes Dull Firetip Phocides pigmalion Mangrove Skipper Phocides belus Belus Skipper Phocides palemon Guava Skipper Phocides urania Urania skipper Proteides mercurius Mercurial Skipper Epargyreus zestos Zestos Skipper Epargyreus clarus Silver-spotted Skipper Epargyreus spanna Hispaniolan Silverdrop Epargyreus exadeus Broken Silverdrop Polygonus leo Hammock Skipper Polygonus savigny Manuel's Skipper Chioides albofasciatus White-striped Longtail Chioides zilpa Zilpa Longtail Chioides ixion Hispaniolan Longtail Aguna asander Gold-spotted Aguna Aguna claxon Emerald Aguna Aguna metophis Tailed Aguna Typhedanus undulatus Mottled Longtail Typhedanus ampyx Gold-tufted Skipper Polythrix octomaculata Eight-spotted Longtail Polythrix mexicanus Mexican Longtail Polythrix asine Asine Longtail Polythrix caunus (Herrich-Schäffer, 1869) Zestusa dorus Short-tailed Skipper Codatractus carlos Carlos' Mottled-Skipper Codatractus alcaeus White-crescent Longtail Codatractus yucatanus Yucatan Mottled-Skipper Codatractus arizonensis Arizona Skipper Codatractus valeriana Valeriana Skipper Urbanus proteus Long-tailed Skipper Urbanus viterboana Bluish Longtail Urbanus belli Double-striped Longtail Urbanus pronus Pronus Longtail Urbanus esmeraldus Esmeralda Longtail Urbanus evona Turquoise Longtail Urbanus dorantes Dorantes Longtail Urbanus teleus Teleus Longtail Urbanus tanna Tanna Longtail Urbanus simplicius Plain Longtail Urbanus procne Brown Longtail -
Keystone Ancient Forest Preserve Resource Management Plan 2011
Keystone Ancient Forest Preserve Resource Management Plan 2011 Osage County & Tulsa County, Oklahoma Lowell Caneday, Ph.D. With Kaowen (Grace) Chang, Ph.D., Debra Jordan, Re.D., Michael J. Bradley, and Diane S. Hassell This page intentionally left blank. 2 Acknowledgements The authors acknowledge the assistance of numerous individuals in the preparation of this Resource Management Plan. On behalf of the Oklahoma Tourism and Recreation Department’s Division of State Parks, staff members were extremely helpful in providing access to information and in sharing of their time. In particular, this assistance was provided by Deby Snodgrass, Kris Marek, and Doug Hawthorne – all from the Oklahoma City office of the Oklahoma Tourism and Recreation Department. However, it was particularly the assistance provided by Grant Gerondale, Director of Parks and Recreation for the City of Sand Springs, Oklahoma, that initiated the work associated with this RMP. Grant provided a number of documents, hosted an on-site tour of the Ancient Forest, and shared his passion for this property. It is the purpose of the Resource Management Plan to be a living document to assist with decisions related to the resources within the park and the management of those resources. The authors’ desire is to assist decision-makers in providing high quality outdoor recreation experiences and resources for current visitors, while protecting the experiences and the resources for future generations. Lowell Caneday, Ph.D., Professor Leisure Studies Oklahoma State University Stillwater, -
Cumulative Index of ARGIA and Bulletin of American Odonatology
Cumulative Index of ARGIA and Bulletin of American Odonatology Compiled by Jim Johnson PDF available at http://odonata.bogfoot.net/docs/Argia-BAO_Cumulative_Index.pdf Last updated: 14 February 2021 Below are titles from all issues of ARGIA and Bulletin of American Odonatology (BAO) published to date by the Dragonfly Society of the Americas. The purpose of this listing is to facilitate the searching of authors and title keywords across all issues in both journals, and to make browsing of the titles more convenient. PDFs of ARGIA and BAO can be downloaded from https://www.dragonflysocietyamericas.org/en/publications. The most recent three years of issues for both publications are only available to current members of the Dragonfly Society of the Americas. Contact Jim Johnson at [email protected] if you find any errors. ARGIA 1 (1–4), 1989 Welcome to the Dragonfly Society of America Cook, C. 1 Society's Name Revised Cook, C. 2 DSA Receives Grant from SIO Cook, C. 2 North and Central American Catalogue of Odonata—A Proposal Donnelly, T.W. 3 US Endangered Species—A Request for Information Donnelly, T.W. 4 Odonate Collecting in the Peruvian Amazon Dunkle, S.W. 5 Collecting in Costa Rica Dunkle, S.W. 6 Research in Progress Garrison, R.W. 8 Season Summary Project Cook, C. 9 Membership List 10 Survey of Ohio Odonata Planned Glotzhober, R.C. 11 Book Review: The Dragonflies of Europe Cook, C. 12 Book Review: Dragonflies of the Florida Peninsula, Bermuda and the Bahamas Cook, C. 12 Constitution of the Dragonfly Society of America 13 Exchanges and Notices 15 General Information About the Dragonfly Society of America (DSA) Cook, C. -
Family Sphingidae
Caterpillar Biodiversity of the American Southwest David L. Wagner Dept. of Ecology & Evolutionary Biology University of Connecticut Larval Characteristics - usually cylindrical - six lateral ocelli - labial spinneret - spiracles on T1 and A1-A8. - segmented (true) legs on thoracic segments - prolegs on A3-A6 and A10 (although anterior prolegs often lost) (for speed walking) prolegs with crochets (hooks) - prothoracic shield on T1 - anal plate or shield on A10 Larval Chaetotaxy and Other Structures * primary setae homologous across groups * nomenclature for setal arrangement (chaetotaxy) standardized by Hinton (1946): often (2) dorsal, (2) subdorsal, (3) lateral, (1-3) subventral, and (1) ventral setae. Family-level Taxonomy * body proportions Figures from Stehr (1987) * chaetotaxy on body and head - presence of 2ndary setae - size and length of setae - branched or unbranched setae, etc., * crochets: arrangement and size heterogeneity * proleg number * glands * thoracic and anal plates Species-level Taxonomy * color patterns helpful for most external feeders (but not so for internal feeders) * chaetotaxy on body and head * ratio of frontal triangle to head height * hypopharyngeal complex * mandibular teeth * spiracular size and color * crochet numbers Accelerated (Phenotypic) Evolution in Larvae Elasmia packardii (Central Texas) Elasmia packardii Elasmia cave (West Texas) Elasmia cave Elasmia mandala (Arizona) Elasmia mandala wagneri Family Sphingidae * large, cylindrical body * setae inconspicuous except above prolegs * horn on dorsum -
Arizona Wildlife Notebook
ARIZONA WILDLIFE CONSERVATION ARIZONA WILDLIFE NOTEBOOK GARRY ROGERS Praise for Arizona Wildlife Notebook “Arizona Wildlife Notebook” by Garry Rogers is a comprehensive checklist of wildlife species existing in the State of Arizona. This notebook provides a brief description for each of eleven (11) groups of wildlife, conservation status of all extant species within that group in Arizona, alphabetical listing of species by common name, scientific names, and room for notes. “The Notebook is a statewide checklist, intended for use by wildlife watchers all over the state. As various individuals keep track of their personal observations of wildlife in their specific locality, the result will be a more selective checklist specific to that locale. Such information would be vitally useful to the State Wildlife Conservation Department, as well as to other local agencies and private wildlife watching groups. “This is a very well-documented snapshot of the status of wildlife species – from bugs to bats – in the State of Arizona. Much of it should be relevant to neighboring states, as well, with a bit of fine-tuning to accommodate additions and deletions to the list. “As a retired Wildlife Biologist, I have to say Rogers’ book is perhaps the simplest to understand, yet most comprehensive in terms of factual information, that I have ever had occasion to peruse. This book should become the default checklist for Arizona’s various state, federal and local conservation agencies, and the basis for developing accurate local inventories by private enthusiasts as well as public agencies. "Arizona Wildlife Notebook" provides a superb starting point for neighboring states who may wish to emulate Garry Rogers’ excellent handiwork.