Observations on the Biology and Control of Glyptotendipes Lobiferus (Say) (Diptera: Chironomidae)

Total Page:16

File Type:pdf, Size:1020Kb

Observations on the Biology and Control of Glyptotendipes Lobiferus (Say) (Diptera: Chironomidae) University of Massachusetts Amherst ScholarWorks@UMass Amherst Doctoral Dissertations 1896 - February 2014 1-1-1972 Observations on the biology and control of Glyptotendipes lobiferus (Say) (Diptera: Chironomidae). Winston Hayden Lavallee University of Massachusetts Amherst Follow this and additional works at: https://scholarworks.umass.edu/dissertations_1 Recommended Citation Lavallee, Winston Hayden, "Observations on the biology and control of Glyptotendipes lobiferus (Say) (Diptera: Chironomidae)." (1972). Doctoral Dissertations 1896 - February 2014. 5612. https://scholarworks.umass.edu/dissertations_1/5612 This Open Access Dissertation is brought to you for free and open access by ScholarWorks@UMass Amherst. It has been accepted for inclusion in Doctoral Dissertations 1896 - February 2014 by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact [email protected]. OBSERVATIONS ON THE BIOLOGY AND CONTROL OF GLYPTOTENDIPES LOBIFERUS (SAY) (DIPTERA: CHIRONOMIDAE) A dissertation presented By WINSTON HAYDEN LAVALLEE Submitted to the Graduate School of the University of Massachusetts in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY April 1972 Major Subject: Entomology OBSERVATIONS ON THE BIOLOGY ANT) CONTROL OF GLYPTOTENDTPES LOBIFERUS (SAY) (DIPTERA: CHIRONOMIDAE) A Dissertation By . WINSTON HAYDEN LAVALLEE Approved as to style and content by: ,: /f- (Chairman of Committee; Anril 1972 (Month) (Year) ACKNOWLEDGEMENTS In appreciation for the helpful guidance and assistance in pre¬ paring this dissertation, the following acknowledgements are made to: Dr. Frank R. Shaw, Chairman of the Thesis Committee, for constant encouragement and patience throughout this study, his many thoughtful suggestions and his unselfish sharing of time and resources, particularly after his retirement while in an emeritus status. i Dr. T. Michael Peters, Thesis Committee member, for valuable suggestions in preparing the manuscript and in obtaining sup¬ plies and equipment used in the study. Dr. William G. Nutting, Thesis Committee member, for sound suggestions in writing and organizing the manuscript. Dr. Richard A. Damon, member. Department of Animal and Veterinary Science, for statistical advice, patient explanation of selected statistical methods and helpful orientation to use of the computer. Dr. Jonn Ii. Lilly, member, Entomology Department, for encouraging this study initially, providing advice and test materials and for reviewing graphs and tables and suggesting valuable improvements therein. • • 11 Dr. Hugo Jamnback, Entomologist, New York State Science Service, State University of New York - Albany, for identification of the midge species investigated. Holyoke Water Power Co. for supporting this study in part and cooperating to the utmost in all phases of the investi gation. Particular appreciation is expressed to Mr. Carl G. Schmidt, Manager of Operations and the late Mr. Robert H. Walker, Vice President. Brown Co. for cooperation in all phases of the study, particularly in those pertaining to midge control. Special thanks is due Mr. David L. Tomlinson and Mr. Charles L. Kirkpatrick. Holyoke Community College for providing space in which to complete certain tests and for the loan of equipment vital to the study. Dr. William A. Hutchinson for valuable comments on pre¬ paring the manuscript. Mr. Carl W. 3uschner for photography assistance. Mr. Norman P. De Bastiani for providing materials neces¬ sary for the preparation of manuscript figures. nichard M. Sparrow xor helpful suggestions regarding the duplication of the manuscript. • • • m My many colleagues, students and friends at Holyoke Community College who encouraged this study and whose thoughtfulness and cooperation made its completion possible. My family, particularly my wife Margaret, who, having lived through the extended period necessary for com¬ pletion of the thesis, deserve special thanks. iv TABLE OF CONTENTS Page I. INTRODUCTION . 1 XI. REVIEW OF LITERATURE. 4 III. OBJECTIVES. 16 IV. METHODS. 17 A. Description of Study Areas . B. Sampling Procedures for Adults . • • C. Sampling Procedures for Larvae. 31 D. Sampling Procedures for Eggs. 3 5 E. Miscellaneous Sampling Procedures . .. 3 6 F. Midge Control Procedures - Laboratory . .. 3 9 G. Midge Control Procedures - Field . 46 V. RESULTS AND DISCUSSION. 5 2 A. Survey of Adults. 5 2 B. Survey and Control of Eggs. 75 1. Effects of dessication on eggs - field. 77 2. Effects of dessication on eggs - laboratory. ... 77 3. Control of eggs by heat treatment. 79 4. Control of eggs by malathion treatment .. 79 C. Survey and Control of Larvae. 79 1. Field studies. 2. Lou temperature effects on survival of larvae - laboratory. 35 D. Laboratory Insecticide Studies . 37 1- %gs. 87 V Page 2. Larvae. 91 3. Adults. 9 8 E. Field Insecticide Studies on Adults. 9 8 1. Field control. 9 8 2. Longevity of malathion. 105 F. Midge Biology and Behavior . Ill 1. Description of emergence.Ill 2. Description of swarming.116 3. Description of mating.121 4. Description of oviposit!on.125 5. Midge larvae studies with acetate samplers .... 129 VI. SUMMARY AND CONCLUSIONS.137 VII. LITERATURE CITED.142 VIII. APPENDIX.149 ACKNOWLEDGEMENTS. ±± vi LIST OF TABLES Table Page 1. Adult midges collected in 2 "black light traps during the summer of 19^9. 5 4 2. Adult midges collected in 3 "black light traps during the summer of 1970... 60 3. Mean number of adult midges collected on six inch square adhesive traps located on mill ■window screens and on ice fenders above canal water surface. 65 4. Adhesive trap data. Numbers of midge adults trapped near canal water surface per unit time during the summer of 1970. 6 6 5. Adhesive trap data. Numbers of midge adults trapped on mill window screens per unit time during the summer of 1970... 71 6. Number of egg masses found per 6 inch by 6 inch surface, Holyoke Study Area, August 17, 1970 . 76 7. Hatching of midge egg masses after 14 hours of exposure to drying on canal walls and on ice fender surfaces ... 73 8. Effects of brush burner and malathion treatments on the hatching of midge eggs in the Holyoke Study Area. 8 0 9. Numbers of midge larvae per square foot of sampled surface in the Holyoke Study Area during periodic drainages, 1967-71. 33 10. Effects of 22 hours of low temperature on the sur¬ vival of 4th instar larvae in the laboratory. 3 6 11. Effects of 1 ppm Abate, malathion and Naled on the hatching of midge eggs at the end of 51.5 hours exposure ..... .... 88 12. Effects of 1, 10 and 1000 ppm Rabon on the hatching of midge eggs at the end of 43 hours of exposure. 9 q 13. Effects of 1 ppm Abate, malathion and Naled on 1st instar midge larvae at the end of 4 hours of exposure in the laboratory. Q 9 • • vu Page Ik. Effects of 10 ppm Abate,, malathion and Naled on 1st instar midge larvae after various time exposures ..... 9 4 15. Effects of 1000 ppm Abate, malathion and Naled on field collected 2nd and 3rd instar midge larvae in tubes on acetate samplers at the end of 2 hours after treatment. 9 6 lo. Effects on adult midges of 10 hours of exposure to Rabon or malathion (0.1$) in small aluminum cages immediately after treated cages had drip-dried . 99 17. Effects on adult midges of 10 hours of exposure to Rabon and malathion (0.1$) in small aluminum cages two days after treated cages had drip-dried. ... 10 0 18. Effects of malathion applied at a rate of 1.4 lbs. actual per 100 gallons of mixed spray on the numbers of midge adults resting on 32 inch by 32 inch mill window screens in the Holyoke Study Area.103 19. Effects of Rabon applied at a rate of 1.0 lbs actual per 100 gallons of mixed spray on the numbers of midge adults resting on 32 inch by 32 inch mill window screens in the Holyoke Study Area.104 20. Longevity of malathion on brick surfaces. Recorded as numbers of midges resting on brick square foot surfaces <■.106 21. Longevity of malathion on glass pane surfaces. Re¬ corded as numbers of midges resting on glass pane surfaces (131.6 inch^) . 108 22. Number of adults emerging at various time intervals as determined by catches in emergence traps, 1970 and 1971.. 23. Time of the first emergence of midge adults on six separate days in the summer of 1970 .. 113 24. Length of time in seconds required for adult to free itself from the pupal skin and become airborne. Data obtained on three separate days in the summer of 1970 . 114 25. Number of adult midges which emerged per minute in artificial light or in darkness as determined by catches in emergence traps. I97O and 1971 . • • • vxn Page Physical factors recorded at time of organized 117 swarming of midges ..... 27. Samples taken in the summer of 1970 of small, organized midge swarms at dusk •••••••••• 120 28. Mating of midges. Length of time of copulation and height above the ground at separation Ox pairs • • 122 Mating data, egg laying and hatching data and 29. 124 longevity of selected midge pairs, 1971 . 30. Time required from the beginning of one female oviposition attitude to the post-oviposition flight in the field. 127 31. Egg mass sizes at the time of egg extrusion by ohe female, maximum size 01 egg mass alter absorbing water and minimum length of time required to reach maximum size.. 128 32. Numbers of selected aquatic animals adhering to acetate-faced wood samplers at the one foot depth in canals during the summer of 1970 . 132 33. Numbers of selected aquatic animals adhering to acetate-faced wood samplers at the one foot depth in canals during the summer of 1971. 185 34. Measurement of some physical and chemical variables in canal water at the South Hadley Falls study area (Overflow) during 1970 .Appendix 35. Measurement of some physical and chemical variables in canal water at the Holyoke study area (Valley Paper Co.
Recommended publications
  • Download The
    AN ECOLOGICAL STUDY OF SOME OF THE CHIRONOMIDAE INHABITING A SERIES OF SALINE LAKES IN CENTRAL BRITISH COLUMBIA WITH SPECIAL REFERENCE TO CHIRONOMUS TENTANS FABRICIUS by Robert Alexander Cannings BSc. Hons., University of British Columbia, 1970 A THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in the Department of Zoology We accept this thesis as conforming to the required standard THE UNIVERSITY OF BRITISH COLUMBIA May, 1973 In presenting this thesis in partial fulfilment of the requirements for an advanced degree at the University of British Columbia, I agree that the Library shall make it freely available for reference and study. I further agree that permission for extensive copying of this thesis for scholarly purposes may be granted by the Head of my Department or by his representatives. It is understood that copying or publication of this thesis for financial gain shall not be allowed without my written permission. Department of The University of British Columbia Vancouver 8, Canada Date ii ABSTRACT This thesis is concerned with a study of the Chironomidae occuring in a saline lake series in central British Columbia. It describes the ecological distribution of species, their abundance, phenology and interaction, with particular attention being paid to Chironomus tentans. Emphasis is placed on the species of Chironomus that coexist in these lakes and a further analysis is made of the chromo• some inversion frequencies in C. tentans. Of the thirty-four species represented by identifiable adults in the study, eleven species have not been previously reported in British Columbia, five are new records for Canada and seven species are new to science.
    [Show full text]
  • Genomanalyse Von Prodiamesa Olivacea
    Genomanalyse von Prodiamesa olivacea Dissertation zur Erlangung des Grades Doktor der Naturwissenschaften (Dr. rer. nat.) am Fachbereich Biologie der Johannes Gutenberg-Universität in Mainz Sarah Brunck geb. 08.08.1987 in Mainz Mainz, 2016 Dekan: 1. Berichterstatter: 2. Berichterstatter: Tag der mündlichen Prüfung: ii Inhaltsverzeichnis Inhaltsverzeichnis ................................................................................................................................ iii 1 Einleitung ........................................................................................................................................... 1 1.1 Die Familie der Chironomiden ................................................................................................. 1 1.1.1 Die Gattung Chironomus ..................................................................................................... 3 1.1.2 Die Gattung Prodiamesa ....................................................................................................... 6 1.2 Die Struktur von Insekten-Genomen am Beispiel der Chironomiden ............................... 9 1.2.1 Hochrepetitive DNA-Sequenzen ..................................................................................... 11 1.2.2 Mittelrepetitive DNA-Sequenzen bzw. Gen-Familien ................................................. 13 1.2.3 Gene und genregulatorische Sequenzen ........................................................................ 17 1.3 Zielsetzung ...............................................................................................................................
    [Show full text]
  • Chironomus Frontpage No 28
    CHIRONOMUS Journal of Chironomidae Research No. 30 ISSN 2387-5372 December 2017 CONTENTS Editorial Anderson, A.M. Keep the fuel burning 2 Current Research Epler, J. An annotated preliminary list of the Chironomidae of Zurqui 4 Martin, J. Chironomus strenzkei is a junior synonym of C. stratipennis 19 Andersen, T. et al. Two new Neo- tropical Chironominae genera 26 Kuper, J. Life cycle of natural populations of Metriocnemus (Inermipupa) carmencitabertarum in The Netherlands: indications for a southern origin 55 Lin, X., Wang, X. A redescription of Zavrelia bragremia 67 Short Communications Baranov, V., Nekhaev, I. Impact of the bird-manure caused eutrophication on the abundance and diversity of chironomid larvae in lakes of the Bolshoy Aynov Island 72 Namayandeh, A., Beresford, D.V. New range extensions for the Canadian Chironomidae fauna from two urban streams 76 News Liu, W. et al. The 2nd Chinese Symposium on Chironomidae 81 In memoriam Michailova, P., et al. Prof. Dr. Wolfgang Friedrich Wülker 82 Unidentified male, perhaps of the Chironomus decorus group? Photo taken in the Madrona Marsh Preserve, California, USA. Photo: Emile Fiesler. CHIRONOMUS Journal of Chironomidae Research Editors Alyssa M. ANDERSON, Department of Biology, Chemistry, Physics, and Mathematics, Northern State University, Aberdeen, South Dakota, USA. Torbjørn EKREM, NTNU University Museum, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway. Peter H. LANGTON, 16, Irish Society Court, Coleraine, Co. Londonderry, Northern Ireland BT52 1GX. The CHIRONOMUS Journal of Chironomidae Research is devoted to all aspects of chironomid research and serves as an up-to-date research journal and news bulletin for the Chironomidae research community.
    [Show full text]
  • Chironominae 8.1
    CHIRONOMINAE 8.1 SUBFAMILY CHIRONOMINAE 8 DIAGNOSIS: Antennae 4-8 segmented, rarely reduced. Labrum with S I simple, palmate or plumose; S II simple, apically fringed or plumose; S III simple; S IV normal or sometimes on pedicel. Labral lamellae usually well developed, but reduced or absent in some taxa. Mentum usually with 8-16 well sclerotized teeth; sometimes central teeth or entire mentum pale or poorly sclerotized; rarely teeth fewer than 8 or modified as seta-like projections. Ventromental plates well developed and usually striate, but striae reduced or vestigial in some taxa; beard absent. Prementum without dense brushes of setae. Body usually with anterior and posterior parapods and procerci well developed; setal fringe not present, but sometimes with bifurcate pectinate setae. Penultimate segment sometimes with 1-2 pairs of ventral tubules; antepenultimate segment sometimes with lateral tubules. Anal tubules usually present, reduced in brackish water and marine taxa. NOTESTES: Usually the most abundant subfamily (in terms of individuals and taxa) found on the Coastal Plain of the Southeast. Found in fresh, brackish and salt water (at least one truly marine genus). Most larvae build silken tubes in or on substrate; some mine in plants, dead wood or sediments; some are free- living; some build transportable cases. Many larvae feed by spinning silk catch-nets, allowing them to fill with detritus, etc., and then ingesting the net; some taxa are grazers; some are predacious. Larvae of several taxa (especially Chironomus) have haemoglobin that gives them a red color and the ability to live in low oxygen conditions. With only one exception (Skutzia), at the generic level the larvae of all described (as adults) southeastern Chironominae are known.
    [Show full text]
  • Using Various Lines of Evidence to Identify Chironomus Species (Diptera: Chironomidae) in Eastern Canadian Lakes
    Zootaxa 3741 (4): 401–458 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2013 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3741.4.1 http://zoobank.org/urn:lsid:zoobank.org:pub:0D2276A9-5295-4622-BCE8-A7D996A30367 Using various lines of evidence to identify Chironomus species (Diptera: Chironomidae) in eastern Canadian lakes ISABELLE PROULX1, JON MARTIN2, MELISSA CAREW3 & LANDIS HARE1,4 1Institut national de la recherche scientifique – Centre Eau Terre Environnement, 490 rue de la Couronne, Quebec City, Quebec, G1K 9A9, Canada. E-mails: [email protected] & [email protected] 2Department of Genetics, University of Melbourne, Melbourne, Victoria 3010, Australia. E-mail: [email protected] 3Centre for Aquatic Pollution Identification and Management, Bio21 Institute, University of Melbourne, Melbourne, Victoria 3010, Australia. E-mail: [email protected] 4Corresponding author Table of contents Abstract . 401 Introduction . 402 Methods . 403 Results and discussion . 411 Species delimitation and identification . 411 Species descriptions and taxonomic status . 421 Chironomus (Chironomus) ‘tigris’ . 421 Chironomus (Chironomus) staegeri Lundbeck (1898) . 421 Chironomus (Chironomus) frommeri Sublette and Sublette (1971) . 422 Chironomus (Chironomus) cucini Webb (1969) . 423 Chironomus sp. NAII . 423 Chironomus sp. NAIII (possibly C. decumbens (Malloch 1934)). 424 Chironomus sp. NAI (C. anthracinus-group) . 424 Chironomus (Chironomus) anthracinus Zetterstedt (1860) . 425 Chironomus (Chironomus) entis Shobanov (1989) . 425 Chironomus (Chironomus) plumosus Linnaeus (1758) . 426 Chironomus (Chironomus) maturus Johannsen (1908) . 427 Chironomus (Chironomus) decorus-group sp. 2 Butler et al. (1995) . 427 Chironomus (Chironomus) harpi Sublette (in Wülker et al. 1991) . 428 Chironomus (Chironomus) bifurcatus Wuelker, Martin, Kiknadze, Sublette and Michiels (2009) .
    [Show full text]
  • Nabs 2004 Final
    CURRENT AND SELECTED BIBLIOGRAPHIES ON BENTHIC BIOLOGY 2004 Published August, 2005 North American Benthological Society 2 FOREWORD “Current and Selected Bibliographies on Benthic Biology” is published annu- ally for the members of the North American Benthological Society, and summarizes titles of articles published during the previous year. Pertinent titles prior to that year are also included if they have not been cited in previous reviews. I wish to thank each of the members of the NABS Literature Review Committee for providing bibliographic information for the 2004 NABS BIBLIOGRAPHY. I would also like to thank Elizabeth Wohlgemuth, INHS Librarian, and library assis- tants Anna FitzSimmons, Jessica Beverly, and Elizabeth Day, for their assistance in putting the 2004 bibliography together. Membership in the North American Benthological Society may be obtained by contacting Ms. Lucinda B. Johnson, Natural Resources Research Institute, Uni- versity of Minnesota, 5013 Miller Trunk Highway, Duluth, MN 55811. Phone: 218/720-4251. email:[email protected]. Dr. Donald W. Webb, Editor NABS Bibliography Illinois Natural History Survey Center for Biodiversity 607 East Peabody Drive Champaign, IL 61820 217/333-6846 e-mail: [email protected] 3 CONTENTS PERIPHYTON: Christine L. Weilhoefer, Environmental Science and Resources, Portland State University, Portland, O97207.................................5 ANNELIDA (Oligochaeta, etc.): Mark J. Wetzel, Center for Biodiversity, Illinois Natural History Survey, 607 East Peabody Drive, Champaign, IL 61820.................................................................................................................6 ANNELIDA (Hirudinea): Donald J. Klemm, Ecosystems Research Branch (MS-642), Ecological Exposure Research Division, National Exposure Re- search Laboratory, Office of Research & Development, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268- 0001 and William E.
    [Show full text]
  • Abstracts Submitted for Presentation During The
    Abstracts submitted for presentation during the Compiled By Leonard C. Ferrington Jr. 17 July 2003 ABSTRACT FOR THE THIENEMANN HONORARY LECTURE THE ROLE OF CHROMOSOMES IN CHIRONOMID SYSTEMATICS, ECOLOGY AND PHYLOGENY WOLFGANG F. WUELKER* Chironomids have giant chromosomes with useful characters: different chromosome number, different combination of chromosome arms, number and position of nucleolar organizers, amount of heterochromatin, presence of puffs and Balbiani rings, banding pattern. For comparison of species, it is important that the bands or groups of bands can be homologized. Chromosomes are nearly independent of environmental factors, however they show variability in form of structural modifications and inversion polymorphism. Systematic aspects: New species of chironomids have sometimes been found on the basis of chromosomes, e.g. morphologically well defined "species" turned out to contain two or more karyotypes. Chromosome preparations were also sometimes declared as species holotypes. Moreover, chromosomes were helpful to find errors in previous investigations or to rearrange groups.- Nevertheless, where morphology and chromosomal data are not sufficient for species identification, additional results of electrophoresis of enzymes or hemoglobins as well as molecular-biological data were often helpful and necessary . Ecological, parasitological and zoogeographical aspects: An example of niche formation are the endemic Sergentia-species of the 1500 m deep Laike Baikal in Siberia. Some species are stenobathic and restricted to certain depth regions. The genetic sex of nematode-infested Chironomus was unresolved for a long time. External morphological characters were misleading, because parasitized midges have predominantly female characters. However, transfer of the parasites to species with sex-linked chromosomal characters (strains of Camptochironomus) could show that half of the parasitized midges are genetic males.
    [Show full text]
  • Taxonomy and Ecology of Aquatic Insects
    PHC 6937: Water Biology Aquatic Insects Taxonomy, Ecology & BioControl Case Study Spring Semester 2011 Instructor • Contact Information: – Dr. Jim Cuda, Associate Professor – Phone 352-273-3921 – Email: [email protected] • Research Area: – Biological Control of Aquatic and Terrestrial Weeds 2009 Publication • Three Chapters: – Aquatic Plants, Mosquitoes & Public Health • Chapter 5 – Introduction to BioControl of Aquatic Weeds • Chapter 8 – Insects for BioControl of Aquatic Weeds • Chapter 9 1 References • Merritt, R. W., K. W. Cummins, and M.B. Berg (eds.). 2008. An Introduction to the Aquatic Insects of North America, 4thrd edition. Kendall / Hunt, Dubuque, IA • Center, T. D., F. A. Dray, Jr., G. P. Jubinsky, and M. J. Grodowitz. 1999. Insects and Other Arthropods That Feed on Aquatic and Wetland Plants. USDA, Agricultural Research Service, Technical Bulletin No. 1870. References Topics • Introduction • Overview of Aquatic Insect Taxa • Habitat Classification and Terminology • Example of Trophic Organization and Function − Hydrilla Midge Case Study • Questions? 2 Learning Objectives • Reasons for Studying Aquatic Insects • Aquatic Existence Problems and Solutions • Respiration Adaptations • Scientific & Common Names of Aquatic Insect Orders • Terminology for Major Aquatic Habitats • Different Modes for Aquatic Existence • Types of Functional Feeding Groups Topics • Introduction • Overview of Aquatic Insect Taxa • Habitat Classification and Terminology • Example of Trophic Organization and Function − Hydrilla Midge Case Study • Questions?
    [Show full text]
  • Diptera), an Emerging Global Problem Arshadali
    260 JouRul oF THEArrlpnrclN Mosquno CoNrRor,AssocrarroN Vor..7, No.2 PERSPECTIVESON MANAGEMENT OF PESTIFEROUS CHIRONOMIDAE (DIPTERA), AN EMERGING GLOBAL PROBLEM ARSHADALI Uniuersity of Florida, IFAS, Central Florida Researchand Education Center,2700 East CeleryAuenue. Sanford,FL 32771-9608 ABSTRACT. In recent years, adult Chironomidae emerging from some urban natural or man-made habllats have increasingly posed a variety of nuisance and economic problems, and in some situations medical problems to humans in different parts of the world. Although there are an estimated 4,000 or more speciesof chironomid midgesworldwide, lessthan 100species have been reported to be pesti'ferous. Among midge control methods, numerous laboratory and field studies have been conducted on the use of o^rqanochlorines,organophosphates (OPs), pyrethroids and insect growth regulators (IGRs). Field use of OP insecticides such as chlorpyrifos, temephos and others in the USA ind Japan hai generally resulted in larval control for 2-5 wk or longeiwith application rates below 0.56 kg AI/ha (U=S.q)ani 51-5 ppln (Japan).Frequent use of some OP insecticidesin the USA and Japan has caused.their increasedtolerance in severalmidge species.The IGRs, diflubenzuron and methoprene,provide alternate means for midge control. These IGRs in some situations suppressedadult midge eme.ge.tceby >g\Vo at rates (0.3 t<gll/_hqr A number ofparasites and pathogenshave been reported from mldgesin different parts of the woid'. Bacillus thuringiensis serovar. israelensisis effective igainst some mid-gespecies, but at rates at least 10x or higher established for mosquito larvicidal aciiuity. The flatriorm, Dugesia doro.tocephala,and some fish speciesoffer a goodpotential for midge control in somesituations.
    [Show full text]
  • Cryptochironomus. an Identification Key to the Larvae and Pupal Exuviae in Europe
    ©Erik Mauch Verlag, Dinkelscherben, Deutschland,1 Download unter www.biologiezentrum.at Lauterbornia 55: 1-22, D-86424 Dinkelscherben, 2005-08-19 Cryptochironomus. An identification key to the larvae and pupal exuviae in Europe Henk J. Vallenduuk and E. Morozova With 35 figures and 5 tables Keywords: Cryptochironomus, Diptera, Insecta, The Netherlands, Volga, Russia, Europe morphology, identification, distribution, larva, pupa, exuvia Schlagwörter: Cryptochironomus, Diptera, Insecta, Niederlande, Wolga, Russland, Europa, Morphologie, Bestimmung, Verbreitung, Larve, Puppe, Exuvie The genus Cryptochironomus Kieffer is represented in Europe by about ten species. An illustrated key to the pupal exuviae and larvae is given to the known and suggested species. The autecology unfortunately is little known. 1 Introduction For the assessment of species specific characters it is necessary to have larvae for which the specific identification is certain. Only by rearing larvae to adults can this be achieved. Some years ago we began collecting larvae and rearing them to adult. When successful, this provides the adult and the pupal and larval exuviae. The pupal exuviae enable accurate identifications using the keys of Langton (1991) and Langton & Visser (2003). (The pupal exuviae of C rypto­ chironomus defectus (Kieffer) was not included in the earlier key, but as a result of our rearing program, has been included in the 2003 one.) The adults of Cryptochironomus are very difficult to separate. Morozova has also investigated the larvae cytologically. When all instars of all species have been obtained, it will be possible to make a full revision of the genus; Morozova has embarked on this. In the meantime, the interpretation of the species is that of Langton & Visser (2003).
    [Show full text]
  • Microsoft Outlook
    Joey Steil From: Leslie Jordan <[email protected]> Sent: Tuesday, September 25, 2018 1:13 PM To: Angela Ruberto Subject: Potential Environmental Beneficial Users of Surface Water in Your GSA Attachments: Paso Basin - County of San Luis Obispo Groundwater Sustainabilit_detail.xls; Field_Descriptions.xlsx; Freshwater_Species_Data_Sources.xls; FW_Paper_PLOSONE.pdf; FW_Paper_PLOSONE_S1.pdf; FW_Paper_PLOSONE_S2.pdf; FW_Paper_PLOSONE_S3.pdf; FW_Paper_PLOSONE_S4.pdf CALIFORNIA WATER | GROUNDWATER To: GSAs We write to provide a starting point for addressing environmental beneficial users of surface water, as required under the Sustainable Groundwater Management Act (SGMA). SGMA seeks to achieve sustainability, which is defined as the absence of several undesirable results, including “depletions of interconnected surface water that have significant and unreasonable adverse impacts on beneficial users of surface water” (Water Code §10721). The Nature Conservancy (TNC) is a science-based, nonprofit organization with a mission to conserve the lands and waters on which all life depends. Like humans, plants and animals often rely on groundwater for survival, which is why TNC helped develop, and is now helping to implement, SGMA. Earlier this year, we launched the Groundwater Resource Hub, which is an online resource intended to help make it easier and cheaper to address environmental requirements under SGMA. As a first step in addressing when depletions might have an adverse impact, The Nature Conservancy recommends identifying the beneficial users of surface water, which include environmental users. This is a critical step, as it is impossible to define “significant and unreasonable adverse impacts” without knowing what is being impacted. To make this easy, we are providing this letter and the accompanying documents as the best available science on the freshwater species within the boundary of your groundwater sustainability agency (GSA).
    [Show full text]
  • Chironomids (Diptera: Chironomidae) of the Yukon Arctic North Slope and Herschel Island
    Chironomids (Diptera: Chironomidae) of the Yukon Arctic North Slope and Herschel Island D.R. OLIVER and M.E. DILLON Biological Resources Program, Research Branch, Agriculture and Agri-Food Canada K.W. Neatby Bldg., Ottawa, Ontario, Canada K1A 0C6 Abstract. More than 100 taxa, consisting of 68 named species and at least 32 unnamed taxa, are reported from the Yukon arctic North Slope and Herschel Island in an annotated checklist. Five subfamilies, Podonominae, Tanypo- dinae, Diamesinae, Orthocladiinae and Chironominae, are represented with Orthocladiinae having more than 50 percent of the taxa. Most (80%) of the named species occur in both the Nearctic and Palaearctic regions, but only 15 are circumpolar. Thirty percent of the named species are restricted to the arctic zone and about one-half of these do not extend into the Arctic Archipelago. In a number of Beringian species the adult males show antennal reduction, which ranges from slight plume reduction to complete loss and female-like appearance. Résumé. Les chironomides (Diptera: Chironomidae) du versant arctique nord du Yukon et de l’île Herschel. Plus de 100 taxons, 68 espèces identifiées et au moins 32 autres taxons encore indéterminés, vivent sur le versant arctique nord du Yukon et dans l’île Herschel; on en trouvera ici une liste commentée. Cinq sous-familles, Podonominae, Tanypodinae, Diamesinae, Orthocladiinae et Chironominae, sont représentées et les Orthocladiinae composent plus de 50% de la faune. La majorité (80%) des espèces déterminées habitent les régions néarctiques et paléarctiques, mais seulement 15 ont une répartition circumpolaire. Trente pourcent des espèces déterminées sont confinées à la zone arctique, dont environ la moitié n’atteignent pas l’Archipel arctique.
    [Show full text]