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The Male Terminalia of Seven American Species of Drosophila
Alpine Entomology 1 2017, 17–31 | DOI 10.3897/alpento.1.20669 The male terminalia of seven American species of Drosophila (Diptera, Drosophilidae) Carlos Ribeiro Vilela1 1 Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, Rua do Matão 277, Cidade Universitária “Armando de Salles Oliveira”, São Paulo - SP, 05508-090, Brazil http://zoobank.org/197D5E09-957B-4804-BF78-23F853C68B0A Corresponding author: Carlos Ribeiro Vilela ([email protected]) Abstract Received 28 August 2017 The male terminalia of seven species of Drosophila endemic to the New World are de- Accepted 28 September 2017 scribed or redescribed and illustrated: one in the hydei subgroup (D. guayllabambae) and Published 20 November 2017 four in the mulleri subgroup (D. arizonae, D. navojoa, D. nigrodumosa, and D. sonorae) of the repleta group; one in the sticta group (D. sticta) and one so far unassigned to group Academic editor: (D. comosa). The D. guayllabambae terminalia redescription is based on a wild-caught Patrick Rohner fly. The redescriptions of the terminalia of the four species in the mulleri subgroup are based on strain specimens, while those of D. sticta and D. comosa terminalia are based Key Words on their holotypes. D. guayllabambae seems to be a strictly mountainous species of the Ecuadorian and Peruvian Andes. D. nigrodumosa is apparently endemic to Venezuela, oc- Drosophila subgenus curring in the Andes as well as at lower altitudes. The remaining five occurs only at lower Drosophilinae altitudes of the American continent. The detailed line drawings depicted in this paper aim line drawings to help interested taxonomists to tell those species apart. -
L. Lacey Knowles
Curriculum Vitae L. Lacey Knowles Department of Ecology and Evolutionary Biology E-mail: [email protected] Museum of Zoology, University of Michigan Orcid ID: 0000-0002-6567-4853 Ann Arbor, MI 48109-1079 POSITIONS 2015-present, Robert B. Payne Collegiate Professor, Department of Ecology and Evolutionary Biology, Curator of Insects, Museum of Zoology, University of Michigan 2012-2015, Professor, Department of Ecology and Evolutionary Biology, Curator of Insects, Museum of Zoology, University of Michigan 2008-2012, Associate Professor, Department of Ecology and Evolutionary Biology, Curator of Insects, Museum of Zoology, University of Michigan 2003-2008, Assistant Professor, Department of Ecology and Evolutionary Biology, Curator of Insects, Museum of Zoology, University of Michigan ACADEMIC APPOINTMENTS: Science Communication Fellow, Museum of Natural History, University of Michigan Member, Center for statistical Genetics, University of Michigan NIH Training Program in Genome Sciences, University of Michigan EDUCATION 2001-2002 NIH Postdoctoral Fellowship (PERT: Postdoctoral Excellence in Research and Teaching) awarded through the Center for Insect Science at the University of Arizona 1999-2001 Postdoctoral Fellowship from the National Science Foundation Research Training Group in the Analysis of Biological Diversification at the University of Arizona 1999 Ph.D., Ecology and Evolution, State University of New York at Stony Brook Dissertation title: Genealogical portraits of Pleistocene speciation and diversity patterns in montane grasshoppers 1993 M.S., Zoology, University of South Florida. Thesis title: Effects of habitat structure on community assemblages of epifaunal macroinvertebrates in seagrass systems. 1989 B.S., cum laude with honors in Marine Biology, University of North Carolina, Wilmington RESEARCH INTERESTS Speciation and processes that promote divergence Phylogenomics and statistical phylogeography Evolutionary consequences of climate change HONORS AND AWARDS *Fulbright U.S. -
Alan Robert Templeton
Alan Robert Templeton Charles Rebstock Professor of Biology Professor of Genetics & Biomedical Engineering Department of Biology, Campus Box 1137 Washington University St. Louis, Missouri 63130-4899, USA (phone 314-935-6868; fax 314-935-4432; e-mail [email protected]) EDUCATION A.B. (Zoology) Washington University 1969 M.A. (Statistics) University of Michigan 1972 Ph.D. (Human Genetics) University of Michigan 1972 PROFESSIONAL EXPERIENCE 1972-1974. Junior Fellow, Society of Fellows of the University of Michigan. 1974. Visiting Scholar, Department of Genetics, University of Hawaii. 1974-1977. Assistant Professor, Department of Zoology, University of Texas at Austin. 1976. Visiting Assistant Professor, Dept. de Biologia, Universidade de São Paulo, Brazil. 1977-1981. Associate Professor, Departments of Biology and Genetics, Washington University. 1981-present. Professor, Departments of Biology and Genetics, Washington University. 1983-1987. Genetics Study Section, NIH (also served as an ad hoc reviewer several times). 1984-1992: 1996-1997. Head, Evolutionary and Population Biology Program, Washington University. 1985. Visiting Professor, Department of Human Genetics, University of Michigan. 1986. Distinguished Visiting Scientist, Museum of Zoology, University of Michigan. 1986-present. Research Associate of the Missouri Botanical Garden. 1992. Elected Visiting Fellow, Merton College, University of Oxford, Oxford, United Kingdom. 2000. Visiting Professor, Technion Institute of Technology, Haifa, Israel 2001-present. Charles Rebstock Professor of Biology 2001-present. Professor of Biomedical Engineering, School of Engineering, Washington University 2002-present. Visiting Professor, Rappaport Institute, Medical School of the Technion, Israel. 2007-2010. Senior Research Associate, The Institute of Evolution, University of Haifa, Israel. 2009-present. Professor, Division of Statistical Genomics, Washington University 2010-present. -
Drosophila Sexual Attractiveness in Older Males Is Mediated by Their Microbiota
Article Drosophila Sexual Attractiveness in Older Males Is Mediated by Their Microbiota Chloe Heys 1,2, Anne Lizé 1,3, Zenobia Lewis 4,* and Tom A. R. Price 1 1 Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK; [email protected] (C.H.); [email protected] (A.L.); [email protected] (T.A.R.P.) 2 Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK 3 UMR CNRS 6553, University of Rennes 1, 263 avenue du Général Leclerc, 35042 Rennes, France 4 School of Life Sciences, University of Liverpool, Liverpool L69 7ZB, UK * Correspondence: [email protected]; Tel.: +0151‐795‐4384 Received: 8 December 2019; Accepted: 22 January 2020; Published: 24 January 2020 Abstract: Age is well known to be a basis for female preference of males. However, the mechanisms underlying age‐based choices are not well understood, with several competing theories and little consensus. The idea that the microbiota can affect host mate choice is gaining traction, and in this study we examine whether the male microbiota influences female preference for older individuals in the fruit fly Drosophila pseudoobscura. We find that an intact microbiota is a key component of attractiveness in older males. However, we found no evidence that this decrease in older male attractiveness was simply due to impaired microbiota generally reducing male quality. Instead, we suggest that the microbiota underlies an honest signal used by females to assess male age, and that impaired microbiota disrupt this signal. This suggests that age‐based preferences may break down in environments where the microbiota is impaired, for example when individuals are exposed to naturally occurring antibiotics, extreme temperatures, or in animals reared in laboratories on antibiotic supplemented diet. -
The Effects of Marking Methodology on Mate Choice in Drosophila Melanogaster
ABC 2020, 7(4):492-504 Animal Behavior and Cognition DOI: https://doi.org/10.26451/abc.07.04.02.2020 ©Attribution 3.0 Unported (CC BY 3.0) PREREGISTERED REPORT The Effects of Marking Methodology on Mate Choice in Drosophila melanogaster Eirlys E. Tysall1, Matilda Q. R. Pembury Smith1*, and R. Tucker Gilman2 1Faculty of Biology, Medicine, and Health, University of Manchester 2Faculty of Science and Engineering; University of Manchester *Corresponding author (Email: [email protected]) Citation – Tysall, E. E., Pembury Smith, M. Q. R., & Gilman, R. T. (2020). The effects of marking methodology on mate choice in Drosophila melanogaster. Animal Behavior and Cognition, 7(4), 492-504. doi: https://doi.org/10.26451/abc.07.04.02.2020 Note: This paper is the final report based on an accepted peer-reviewed preregistered submission that can be found here. Abstract – Mate choice is an important source of sexual selection and a key driver of evolutionary processes including adaptation and speciation. Drosophila species have become an important model system for studying mate choice in the lab. Mate choice experiments often require the marking of individual flies to make those flies identifiable to experimenters, and several marking methods have been developed. All of these methods have the potential to affect mating behavior, but the effects of different marking methods have not been systematically quantified and compared. In this experiment, we quantified and compared the effects of five marking methods commonly used for Drosophila melanogaster: wing clipping, applying paint to the thorax, applying marker pen to the wing, dusting flies with fluorescent powder, and dyeing flies by allowing them to ingest food coloring. -
Hypothesis As an Alternative. the Distribution Of
Heredity (1976), 36 (3), 293-304 REASSOCIATIONPATTERNS AMONG SEGMENTAL INTERCHANGES IN MAIZE D.B. WALDEN and R. C. JANCEY Department of Plant Sciences,Universityof WesternOntario,London, Ontario N6A 3K7 Received2.iv.75 SUMMARY Data from Longley (1961) and Burnham (1969) on the cytological position of the break-points in chrornosomal rearrangements in maize were re-expressed in terms of segment lengths and analysed. After correction for the deviation of the distribution of break-points from an equidistribution, it was shown that highly significant excesses and deficits occurred among some but not all segment length classes. It was concluded that the pattern of reassociation shows: (i) that reassociation involves non-homologues whose interstitial segments are of similar length more frequently than expected; (ii) that the two interchange segments involved in a translocation are of similar length more frequently than expected. 1. INTRODUCTION AN extensive literature exists on the genetic effects and consequences of exposure to radiation and radiomimetic and radiochemical compounds. The origin of chromosomal aberrations had long been considered to be the consequence of" breakage and reunion" until Revell (1955) proposed an "exchange" hypothesis as an alternative. The distribution of the "breakage" or "exchange" events has been approximately determined in several species, with a" random "distribution being claimed by some workers and a "non-random" distribution favoured by several recent investigators (e.g. Caspersson et al., 1972). It is important for the present communication to note that most of the studies record observations made one or a few cell generations after exposure to the mutagen and that only limited information is available about the survival of the aberrations so induced. -
Uniting Micro- with Macroevolution Into an Extended Synthesis: Reintegrating Life’S Natural History Into Evolution Studies
Uniting Micro- with Macroevolution into an Extended Synthesis: Reintegrating Life’s Natural History into Evolution Studies Nathalie Gontier Abstract The Modern Synthesis explains the evolution of life at a mesolevel by identifying phenotype–environmental interactions as the locus of evolution and by identifying natural selection as the means by which evolution occurs. Both micro- and macroevolutionary schools of thought are post-synthetic attempts to evolution- ize phenomena above and below organisms that have traditionally been conceived as non-living. Microevolutionary thought associates with the study of how genetic selection explains higher-order phenomena such as speciation and extinction, while macroevolutionary research fields understand species and higher taxa as biological individuals and they attribute evolutionary causation to biotic and abiotic factors that transcend genetic selection. The microreductionist and macroholistic research schools are characterized as two distinct epistemic cultures where the former favor mechanical explanations, while the latter favor historical explanations of the evolu- tionary process by identifying recurring patterns and trends in the evolution of life. I demonstrate that both cultures endorse radically different notions on time and explain how both perspectives can be unified by endorsing epistemic pluralism. Keywords Microevolution · Macroevolution · Origin of life · Evolutionary biology · Sociocultural evolution · Natural history · Organicism · Biorealities · Units, levels and mechanisms of evolution · Major transitions · Hierarchy theory But how … shall we describe a process which nobody has seen performed, and of which no written history gives any account? This is only to be investigated, first, in examining the nature of those solid bodies, the history of which we want to know; and 2dly, in exam- ining the natural operations of the globe, in order to see if there now actually exist such operations, as, from the nature of the solid bodies, appear to have been necessary to their formation. -
Effects of Gut-Associated Yeasts on Drosophila Melanogaster Performance
Western University Scholarship@Western Electronic Thesis and Dissertation Repository 12-6-2016 12:00 AM Effects of gut-associated yeasts on Drosophila melanogaster performance Yanira Jiménez Padilla The University of Western Ontario Supervisor Brent Sinclair The University of Western Ontario Graduate Program in Biology A thesis submitted in partial fulfillment of the equirr ements for the degree in Master of Science © Yanira Jiménez Padilla 2016 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Biology Commons Recommended Citation Jiménez Padilla, Yanira, "Effects of gut-associated yeasts on Drosophila melanogaster performance" (2016). Electronic Thesis and Dissertation Repository. 4285. https://ir.lib.uwo.ca/etd/4285 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. Abstract I used Drosophila melanogaster as a model to study the role of the gut microbiota, specifically yeasts, in animal physiology. I used Saccharomyces cerevisiae, the yeast commonly included in Drosophila diet, and Lachancea kluyveri, isolated from some Drosophila in the wild, and generated axenic (germ-free) and gnotobiotic (yeast-fed) flies. I found that L. kluyveri persists in the crop, as ascospores and vegetative cells, longer than S. cerevisiae. Some L. kluyveri vegetative cells survive passage through the gut. Egg to adult development time is reduced by 14% in vials containing live L. kluyveri or S. cerevisiae, whereas heat-killed yeasts reduced development time by 3.5-4.5%. -
Diptera: Syrphidae), Based on Integrative Taxonomy and Aegean Palaeogeography
Contributions to Zoology, 87 (4) 197-225 (2018) Disentangling a cryptic species complex and defining new species within the Eumerus minotaurus group (Diptera: Syrphidae), based on integrative taxonomy and Aegean palaeogeography Antonia Chroni1,4,5, Ana Grković2, Jelena Ačanski3, Ante Vujić2, Snežana Radenković2, Nevena Veličković2, Mihajla Djan2, Theodora Petanidou1 1 University of the Aegean, Department of Geography, University Hill, 81100, Mytilene, Greece 2 University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia 3 Laboratory for Biosystems Research, BioSense Institute – Research Institute for Information Technologies in Biosystems, University of Novi Sad, Dr. Zorana Đinđića 1, 21000, Novi Sad, Serbia 4 Institute for Genomics and Evolutionary Medicine; Department of Biology, Temple University, Philadelphia, PA 19122, USA 5 E-mail: [email protected] Keywords: Aegean, DNA sequences, hoverflies, mid- Discussion ............................................................................. 211 Aegean Trench, wing geometric morphometry Taxonomic and molecular implications ...........................212 Mitochondrial dating, biogeographic history and divergence time estimates ................................................213 Abstract Acknowledgments .................................................................215 References .............................................................................215 This study provides an overview of the Eumerus minotaurus -
Patterns and Potential Mechanisms of Thermal Preference in E. Muscae-Infected Drosophila Melanogaster
Western Washington University Western CEDAR WWU Honors Program Senior Projects WWU Graduate and Undergraduate Scholarship Spring 2020 Patterns and potential mechanisms of thermal preference in E. muscae-infected Drosophila melanogaster Aundrea Koger Western Washington University Carolyn Elya Ph.D. Harvard University Jamilla Akhund-Zade Ph.D. Harvard University Benjamin de Bivort Ph.D. Harvard University Follow this and additional works at: https://cedar.wwu.edu/wwu_honors Recommended Citation Koger, Aundrea; Elya, Carolyn Ph.D.; Akhund-Zade, Jamilla Ph.D.; and de Bivort, Benjamin Ph.D., "Patterns and potential mechanisms of thermal preference in E. muscae-infected Drosophila melanogaster" (2020). WWU Honors Program Senior Projects. 406. https://cedar.wwu.edu/wwu_honors/406 This Project is brought to you for free and open access by the WWU Graduate and Undergraduate Scholarship at Western CEDAR. It has been accepted for inclusion in WWU Honors Program Senior Projects by an authorized administrator of Western CEDAR. For more information, please contact [email protected]. Patterns and potential mechanisms of thermal preference in Entomophthora muscae-infected Drosophila melanogaster 1 2 2 Aundrea Koger , Carolyn Elya, Ph.D. , Jamilla Akhund-Zade, Ph.D. , and Benjamin de Bivort, Ph.D.2 1 2 Honors Program, Western Washington University, Department of Organismic and Evolutionary Biology, Harvard University Abstract Animals use various strategies to defend against pathogens. Behavioral fever, or fighting infection by moving to warm locations, is seen in many ectotherms. The behavior-manipulating fungal pathogen Entomophthora muscae infects numerous dipterans, including fruit flies and house flies, Musca domestica. House flies have been shown to exhibit robust behavioral fever early after exposure to E. -
The Genetics of Drosophila Subobscura Populations
Heredity (1980), 45 (3) 335-350 0018-067X/80/0216 0335 $02.00 1980. The Genetical Society of Great Britain THEGENETICS OF DROSOPHILA SUBOBSCURA POPULATIONS XV.EFFECTIVE SIZE OF A NATURAL POPULATION ESTIMATED BY THREE INDEPENDENT METHODS MICHAEL BEGON*, COSTAS B. KRIMBASt, and MICHAEL LOUKASt * Department of Zoology, University of Liverpool, Liverpool L69 3BX, U.K; t Department of Genetics, Agricultural College of Athens, Votanikos, Athens, Greece Received27.ii.80 SUMMARY An estimate is presented of the effective size of a natural, Greek population of Drosophila subobscura, based on data on lethal allelism. It is compared with further estimates for the same population obtained from newly-reported data by the "temporal" and the "ecological" methods. The lethal allelism and ecological estimates both suggest that the population is extremely large and effectively infinite. The conclusions from the temporal method conform to this, with the exception of data from two loci: Est-5 and Aph. Directional selection at these loci is therefore suggested. Each method is described and explained, and their validity discussed. The results are compared with the few previous estimates of effective population size. 1. INTRODUCTION POPULATION genetics theories, in general, deal with "ideal" populations, which are closed, of constant size, have discrete generations, random mating (including seif-fertilisation at random), and a random distribution of family sizes. Effective population number, Ne—a concept developed by Wright (1931, 1938)—relates theory to practice, and, essentially, is the size of the ideal population with which an actual population can be equated genetically. Thus Wright (1969) described the estimation of Ne as ". -
Hermann J. Muller's 1936 Letter to Stalin
The Mankind Quarterly 43 (3), Spring 2003, pp. 305-319 Hermann J. Muller’s 1936 Letter to Stalin John Glad1 University of Maryland This is the full text of a 1936 letter sent by the American geneticist H.J. Muller to Joseph Stalin advocating the creation of a eugenic program in the USSR. It was rejected by Stalin in favor of Lysenkoism. Key words: eugenics, communism, Lysenkoist theory, liberal roots of eugenics movement, Jewish scholars, Hermann J. Muller, Joseph Stalin, Stalinist, purges. Hermann Joseph Muller (1890-1967) received the Nobel Prize in 1946 for his work on the genetics of drosophila, whose brief generational life made it an ideal laboratory in miniature. Within a decade, however, following the discovery in 1953 of the double helical structure of DNA, drosophila studies began to be regarded as classical genetics and gave way to microbial and molecular genetics devoted to gene structure and function. Muller looked upon his drosophila research as science to be applied to the genetic betterment of the human species. A popular misconception with regard to eugenics is that it was exclusively a product of political conservatism. In point of fact the movement had its roots in the left as much as in the right. Muller himself was a devoted communist and an idealistic believer in human rights. Bearing in mind that Jewish scholars played a significant role in the eugenics movement, it should not come as a surprise to find that Muller was Jewish on his mother’s side. Indeed, he wrote a letter to Stalin on the subject of eugenics at the suggestion of the Russian-Jewish physician Solomon Levit, whose main interests lay in the field of genetics, especially in twin studies.