DOCSLIB.ORG

<I>Thyanta Pallidovirens</I> (Heteroptera: Pentatomidae)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
<I>Thyanta Pallidovirens</I> (Heteroptera: Pentatomidae) BEHAVIOR Reproductive Behavior of Thyanta pallidovirens (Heteroptera: Pentatomidae) QIAO WANG1 AND JOCELYN G. MILLAR2 Department of Entomology, University of California, Riverside, CA 92521 Ann. Entomol. Soc. Am. 90(3): 380-388 (1997) ABSTRACT Reproductive behavior of the stink bug Thyanta pallidovirens (Stal) was studied in the laboratory, including the determination of the sexual maturation period for both sexes, Downloaded from https://academic.oup.com/aesa/article/90/3/380/106886 by guest on 04 October 2021 the effects of the number of copulations on fecundity, and the function of prolonged copu- lation. Mean premating periods for males and females were 3.6 ± 0.5 and 4.1 ± 0.6 d, respectively. Preoviposition period averaged 6.6 ± 0.9 d. Females preferred sheltered, rough- textured oviposition sites. Paired adults mated =13 times on average during their lifespan under laboratory conditions. The mean duration of copulations involving virgin females was >17 h, significantly longer than that of subsequent copulations, which lasted between 6.9 and 8.3 h. Multiple matings significantly increased female fecundity. Virgin males donated =17% of their body mass to a virgin female during mating. Duration of mating may be regulated by space available in the spermatheca for ejaculatory material. There was strong evidence of male mate choice, with males terminating copulation with small females before sperm was trans- ferred. There was no indication of male mate-guarding behavior after copulation. Females almost always approached males from distances of >30 cm, suggesting that males attract females from a distance. Within 15 cm, males discern and approach females. Courtship be- haviors of males included antennation of female antennae and abdomens, stroking the abdo- mens with the hind legs, and periodic male abdominal vibrations. Possible functions of these behaviors are discussed. KEY WORDS Pentatomidae, Thyanta pallidovirens, reproductive behavior, nuptial gift THE NATIVE STINK bug Thyanta pallidovirens or more under optimal conditions (Schotzko and (Stal) is distributed through the far western states O'Keeffe 1990a). of the United States and into southern British Co- Aspects of the reproductive behavior of the Pen- lumbia (Schotzko and O'Keeffe 1990a). It was tatomidae have been studied by various authors identified as a major pest of nut crops in California (Borges et al. 1987; Kon et al. 1988; Todd 1989; in the mid-1980s. Damage to nuts caused by this McLain 1989, 1992; Drickamer and McPherson insect includes epicarp lesions, nut abortion and 1992). Reproductive behavior is often complex, kernel necrosis (Rice et al. 1985, 1988; Michailides with individuals of both sexes commonly mating et al. 1987). This insect is also a serious pest of many times (e.g. Kawada and Kitamura 1983, various legume and brassica crops (Schotzko and McLain et al. 1990), and large numbers of egg O'Keeffe 1990a, b). masses being oviposited over periods spanning sev- Adult bugs overwinter in orchard floor debris, eral months (e.g., Schotzko and O'Keeffe 1990a). under rocks, in soil cracks around the bases of host Mate location can involve chemical (Aldrich 1988) plants, or in other shielded places in and around and acoustic cues (Ota and Cold 1991), and there orchards (Rice et al. 1988). In California pistachio is evidence for some degree of mate choice by orchards, overwintering adults first appear in April both sexes (McLain 1980, 1989). or May, with adults of the 1st new generation In one of the few previous studies of T. palli- emerging in June or July. One or 2 additional over- dovirens reproductive behavior, Schotzko and lapping generations may develop during summer O'Keeffe (1990a) investigated ovipositional and and autumn. In the laboratory, this species will re- mating rhythms, and the variability in oviposition produce year-round under long-day conditions, S6s in response to different legume hosts. Because T. with the period from egg to adult averaging 25 pallidovirens is a serious pest of a variety of crops, d (vide infra), and adult longevity reaching 2 mo a better knowledge of its life history is needed. We report here the results of detailed investigations of the reproductive behavior in this species. In par- 'Current address: Department of Plant Science, Massey Uni- versity, Private Bag 11222, Palmerston North, New Zealand. ticular, our objectives were to observe and describe 2To whom correspondence should be addressed. T. pallidovirens reproductive behavior and behav- 0013-8746/97/0380-0388$02.00/0 © 1997 Entomological Society of America May 1997 WANG AND MILLAR: REPRODUCTIVE BEHAVIOR OF T. pallidovirens 381 ioral sequences; to measure parameters associated To determine the premating period for each sex with reproduction in this species, including sexual separately, 2 combinations of pairings were per- maturation periods, effects of single versus multi- formed: (1) newly emerged males were paired with ple matings on fecundity and egg hatch rates, the 10-d-old virgin females (n = 21), (2) newly duration and number of copulations, the number emerged females were paired with 10-d-old virgin of egg masses oviposited and the period between males (n = 19). sequential oviposition bouts; and to investigate the To determine preoviposition periods, 31 pairs of extent and effects of male investment in reproduc- freshly emerged insects were set up in individual tion in this species. containers. The time between emergence and the 1st copulation was recorded as the premating pe- riod, and that between emergence and 1st ovipo- Materials and Methods sition as the preoviposition period. Daily Mating Rhythms. Forty-one 10-d-old Downloaded from https://academic.oup.com/aesa/article/90/3/380/106886 by guest on 04 October 2021 Insects. In early August 1994, a laboratory col- pairs (1 pair per tube) were set up in 150-ml open- ony of T. pallidovirens was started from adults (31 ended plastic tubes with each end covered with males and 50 females) and nymphs (22 individuals) window screen, and observed hourly for 3 d, start- collected from alfalfa fields near Davis, CA, and ing 4 h into the photophase of the 1st observation from specimens obtained from a laboratory colony day. A piece of filter paper (6 by 2 cm), several (5 males, 7 females, and 30 nymphs) maintained sunflower seeds and half a green bean were placed at the Department of Entomology, University of in each half of the chamber. The number of cop- California, Davis. Insects were reared at 27 ± 1°C, ulating pairs was recorded hourly. 60 ± 10% RH, and a photoperiod of 16:8 (L:D) Effect of Single Versus Multiple Matings on h, with lighting provided by fluorescent lights. Fecundity. To determine whether the number of Food for nymphs and adults consisted of thor- matings influenced egg hatch rates and total num- oughly washed green beans from a supermarket, ber of eggs oviposited, bugs were set up in the organically grown sunflower seeds, and alfalfa cut- following 4 treatments, using 150-ml plastic tubes tings from an alfalfa plot in University of California as described above: (1) paired treatment. Thirty- Riverside Agricultural Operations. Green beans one pairs were kept in individual tubes for their and alfalfa were replaced every other day. All in- entire lifespans. The total number of matings per sects used for experiments were obtained from off- pair was determined by observing pairs thrice daily spring of the initial colony. (=1200 hours, 1700 hours, and just before lights The breeding colony was maintained in 2 wood- out each day). Because copulations are initiated en cages (76 by 43 by 43 cm), each containing 70- during the photophase, and because copulations 80 adults of both sexes. New adults were added to last for a number of hours (see Results), copula- the breeding cages every other day. Egg masses tions could be accurately tallied from these 3 ob- were collected from breeding cages every other servations. (2) Mated once treatment. Twenty- day, and kept in plastic petri dishes (10 by 1.5 cm), three pairs were placed in individual tubes and with 4 egg batches per dish. Upon hatching, males were removed immediately after the 1st nymphs were provided with fresh green beans and mating. (3) Mated 3 times treatment. Twenty-three sunflower seeds every other day. When nymphs females were allowed to mate 3 times with the reached the 2nd instar, they were transferred to same male at 5-d intervals in individual tubes, fol- cylindrical paper ice cream cartons (15 by 12.5 cm) lowed by permanent removal of the males. (4) Un- with window screen lids (^lOO nymphs per car- mated treatment. Twenty virgin females were ton). After the final molt, the adults were segre- maintained in tubes individually. gated by sex for use in experiments or added back For all treatments, egg masses were collected 3 to the breeding colony. times daily for the duration of the experiment and Sexual Maturation and Preoviposition Peri- incubated until hatching in individual petri dishes ods. Freshly emerged pairs (1 male, 1 female) of (10 by 1.5 cm diameter). The total number of eggs insects were set up in individual mating containers per mass and the number of eggs per mass that constructed from two 150-ml plastic tubes. One did not hatch were counted to determine hatch end of each tube was covered with window screen rates. and the open ends were fastened together with Male Investment in Reproduction. To examine transparent adhesive tape, and a piece of paper the relationship between the duration of copula- was used to separate the 2 halves of the chamber. tion and the amount of semen transferred by the A piece of filter paper (6 by 2 cm), several sun- male to the female during mating, body weights of flower seeds and half a green bean were placed in both sexes were measured before and after pro- each half of the chamber.
Load more

Recommended publications
  • The Pentatomidae, Or Stink Bugs, of Kansas with a Key to Species (Hemiptera: Heteroptera) Richard J
    Fort Hays State University FHSU Scholars Repository Biology Faculty Papers Biology 2012 The eP ntatomidae, or Stink Bugs, of Kansas with a key to species (Hemiptera: Heteroptera) Richard J. Packauskas Fort Hays State University, [email protected] Follow this and additional works at: http://scholars.fhsu.edu/biology_facpubs Part of the Biology Commons, and the Entomology Commons Recommended Citation Packauskas, Richard J., "The eP ntatomidae, or Stink Bugs, of Kansas with a key to species (Hemiptera: Heteroptera)" (2012). Biology Faculty Papers. 2. http://scholars.fhsu.edu/biology_facpubs/2 This Article is brought to you for free and open access by the Biology at FHSU Scholars Repository. It has been accepted for inclusion in Biology Faculty Papers by an authorized administrator of FHSU Scholars Repository. 210 THE GREAT LAKES ENTOMOLOGIST Vol. 45, Nos. 3 - 4 The Pentatomidae, or Stink Bugs, of Kansas with a key to species (Hemiptera: Heteroptera) Richard J. Packauskas1 Abstract Forty eight species of Pentatomidae are listed as occurring in the state of Kansas, nine of these are new state records. A key to all species known from the state of Kansas is given, along with some notes on new state records. ____________________ The family Pentatomidae, comprised of mainly phytophagous and a few predaceous species, is one of the largest families of Heteroptera. Some of the phytophagous species have a wide host range and this ability may make them the most economically important family among the Heteroptera (Panizzi et al. 2000). As a group, they have been found feeding on cotton, nuts, fruits, veg- etables, legumes, and grain crops (McPherson 1982, McPherson and McPherson 2000, Panizzi et al 2000).
    [Show full text]
  • Invasive Stink Bugs in California
    FARM ADVISORS Trouble Comes in Pairs: Invasive stink bugs in California BB was first detected in the U.S. in CA (Los Angeles County) 1 2 3 Jesús R. Lara , Charlie Pickett , Eugene Hannon , during 2008 and follow-up DNA analyses indicate CA populations 4 1 1 Lisa Gonzalez , Samuel Figueroa , Mariana Romo , originated from Pakistan (Reed et al. 2013; Sforza et al. 2017). 1 1 1 Christopher Cabanas , Vanessa Bazurto , Vincent Strode , In the U.S., BB has been recorded on 32 host plants from 8 1 1 5 Kristen Briseno , Michael Lewis , Joseph Corso , families (Bundy et al. 2018). However, BB is mainly a pest 6 1 Merilee Atkinson , Mark Hoddle threat to cultivated cole crops (Brassicaceae), including broccoli, cauliflower, cabbage, and kale. Feeding damage from BB causes 1 University of California, Riverside; stunted/malformed vegetative growth, wilting, and stippling (Fig 2 California Department of Food and Agriculture; 1). Severe damage symptoms from BB feeding, leading to plant 3 Fresno County Department of Agriculture; death, are commonly observed with direct-seeded cole crops. BB’s 4 Natural History Museum of Los Angeles County; distribution in the U.S. is limited to southwestern states (CA, AZ, 5 Long Beach Organic, Inc.; NV, NM, TX, and UT) and it thrives in warm climates, more so than 6 Long Beach Community Garden Association BMSB. BB’s current CA distribution ranges from Imperial Valley to parts of the Sacramento Valley, for a total of 22 invaded CA counties (Bundy et al. 2018). In CA, BB has peak activity occurring in spring and fall months, coinciding with the cole crop field season in agricultural areas in the state (Reed et al.
    [Show full text]
  • Tachinid Fly Parasitism and Phenology of The
    Neotrop Entomol (2020) 49:98–107 https://doi.org/10.1007/s13744-019-00706-4 BIOLOGICAL CONTROL Tachinid Fly Parasitism and Phenology of the Neotropical Red-Shouldered Stink Bug, Thyanta perditor (F.) (Heteroptera: Pentatomidae), on the Wild Host Plant, Bidens pilosa L. (Asteraceae) 1 1 2 TLUCINI ,ARPANIZZI ,RVPDIOS 1Lab of Entomology, EMBRAPA Trigo, Passo Fundo, RS, Brasil 2Depto de Zoologia, Instituto de Biociências, Univ de São Paulo, São Paulo, SP, Brasil Keywords Abstract Parasites, Tachinidae flies, stink bug, Field and laboratory studies were conducted with the Neotropical red- associated plants shouldered stink bug Thyanta perditor (F.) (Heteroptera: Pentatomidae) Correspondence aiming to evaluate parasitism incidence on adults by tachinid flies (Diptera: T Lucini, Lab of Entomology, EMBRAPA Tachinidae), which were raised in the laboratory for identification. Egg Trigo, Caixa Postal 3081, Passo Fundo, RS99050-970, Brasil; tiago_lucini@ deposition by flies on adult body surface was mapped. In addition, nymph hotmail.com and adult incidence on the wild host plant black jack, Bidens pilosa L. (Asteraceae), during the vegetative and the reproductive periods of plant Edited by Christian S Torres – UFRPE development was studied. Seven species of tachinid flies were obtained: Received 28 January 2019 and accepted 5 Euthera barbiellini Bezzi (73% of the total) and Trichopoda cf. pictipennis July 2019 Bigot (16.7%) were the most abundant; the remaining five species, Published online: 25 July 2019 Gymnoclytia sp.; Phasia sp.; Strongygaster sp.; Cylindromyia cf. dorsalis * Sociedade Entomológica do Brasil 2019 (Wiedemann); and Ectophasiopsis ypiranga Dios & Nihei added 10.3% of the total. Tachinid flies parasitism on T. perditor adults was significantly greater on the dorsal compared to the ventral body surface.
    [Show full text]
  • Identification, Biology, Impacts, and Management of Stink Bugs (Hemiptera: Heteroptera: Pentatomidae) of Soybean and Corn in the Midwestern United States
    Journal of Integrated Pest Management (2017) 8(1):11; 1–14 doi: 10.1093/jipm/pmx004 Profile Identification, Biology, Impacts, and Management of Stink Bugs (Hemiptera: Heteroptera: Pentatomidae) of Soybean and Corn in the Midwestern United States Robert L. Koch,1,2 Daniela T. Pezzini,1 Andrew P. Michel,3 and Thomas E. Hunt4 1 Department of Entomology, University of Minnesota, 1980 Folwell Ave., Saint Paul, MN 55108 ([email protected]; Downloaded from https://academic.oup.com/jipm/article-abstract/8/1/11/3745633 by guest on 08 January 2019 [email protected]), 2Corresponding author, e-mail: [email protected], 3Department of Entomology, Ohio Agricultural Research and Development Center, The Ohio State University, 210 Thorne, 1680 Madison Ave. Wooster, OH 44691 ([email protected]), and 4Department of Entomology, University of Nebraska, Haskell Agricultural Laboratory, 57905 866 Rd., Concord, NE 68728 ([email protected]) Subject Editor: Jeffrey Davis Received 12 December 2016; Editorial decision 22 March 2017 Abstract Stink bugs (Hemiptera: Heteroptera: Pentatomidae) are an emerging threat to soybean and corn production in the midwestern United States. An invasive species, the brown marmorated stink bug, Halyomorpha halys (Sta˚ l), is spreading through the region. However, little is known about the complex of stink bug species associ- ated with corn and soybean in the midwestern United States. In this region, particularly in the more northern states, stink bugs have historically caused only infrequent impacts to these crops. To prepare growers and agri- cultural professionals to contend with this new threat, we provide a review of stink bugs associated with soybean and corn in the midwestern United States.
    [Show full text]
  • Chemical Ecology Studies in Soybean Crop in Brazil and Their Application to Pest Management
    4 Chemical Ecology Studies in Soybean Crop in Brazil and Their Application to Pest Management Miguel Borges, Maria Carolina Blassioli Moraes, Raul Alberto Laumann, Martin Pareja, Cleonor Cavalcante Silva, Mirian Fernandes Furtado Michereff and Débora Pires Paula Embrapa Genetic Resources and Biotechnology. 70770-917, Brasília, DF; Brazil 1. Introduction Considering the current state of soybean production and markets around the world, it is readily apparent that it is possible to divide the countries in the world in two halves: producer and consumers’. Consumers’ countries are mainly those belonging to the European Union that have their need for proteins used for animal feeding supplied in their majority by soybean seed or meal imports (Dros, 2004). The majority of soybean production is shared (80%) between four countries: the United States, Brazil, Argentina and China (Dros, 2004). Therefore, if we consider only those countries that may supply their internal needs and exporting either seeds, meals or oils, only the USA, Brazil and Argentina remain as exporting countries (Daydé et al., 2009). In this context, Brazil is currently the world second largest soybean producer (18%) and exporter (19%), with a cultivated area for soybean around 23 million ha and production around 3 ton/ha, reaching yearly a total production of approximately 68 million ton (CONAB, 2010). Worldwide, scientists in different countries are trying to increase both the productivity and profitability of the agricultural sector of their economies, to feed growing populations and to increase the quality of life for millions of people. In recent years there has been a growing concern about environmental changes, and about how we are using the resources available in natural habitats.
    [Show full text]
  • Great Lakes Entomologist the Grea T Lakes E N Omo L O G Is T Published by the Michigan Entomological Society Vol
    The Great Lakes Entomologist THE GREA Published by the Michigan Entomological Society Vol. 45, Nos. 3 & 4 Fall/Winter 2012 Volume 45 Nos. 3 & 4 ISSN 0090-0222 T LAKES Table of Contents THE Scholar, Teacher, and Mentor: A Tribute to Dr. J. E. McPherson ..............................................i E N GREAT LAKES Dr. J. E. McPherson, Educator and Researcher Extraordinaire: Biographical Sketch and T List of Publications OMO Thomas J. Henry ..................................................................................................111 J.E. McPherson – A Career of Exemplary Service and Contributions to the Entomological ENTOMOLOGIST Society of America L O George G. Kennedy .............................................................................................124 G Mcphersonarcys, a New Genus for Pentatoma aequalis Say (Heteroptera: Pentatomidae) IS Donald B. Thomas ................................................................................................127 T The Stink Bugs (Hemiptera: Heteroptera: Pentatomidae) of Missouri Robert W. Sites, Kristin B. Simpson, and Diane L. Wood ............................................134 Tymbal Morphology and Co-occurrence of Spartina Sap-feeding Insects (Hemiptera: Auchenorrhyncha) Stephen W. Wilson ...............................................................................................164 Pentatomoidea (Hemiptera: Pentatomidae, Scutelleridae) Associated with the Dioecious Shrub Florida Rosemary, Ceratiola ericoides (Ericaceae) A. G. Wheeler, Jr. .................................................................................................183
    [Show full text]
  • Surveying for Terrestrial Arthropods (Insects and Relatives) Occurring Within the Kahului Airport Environs, Maui, Hawai‘I: Synthesis Report
    Surveying for Terrestrial Arthropods (Insects and Relatives) Occurring within the Kahului Airport Environs, Maui, Hawai‘i: Synthesis Report Prepared by Francis G. Howarth, David J. Preston, and Richard Pyle Honolulu, Hawaii January 2012 Surveying for Terrestrial Arthropods (Insects and Relatives) Occurring within the Kahului Airport Environs, Maui, Hawai‘i: Synthesis Report Francis G. Howarth, David J. Preston, and Richard Pyle Hawaii Biological Survey Bishop Museum Honolulu, Hawai‘i 96817 USA Prepared for EKNA Services Inc. 615 Pi‘ikoi Street, Suite 300 Honolulu, Hawai‘i 96814 and State of Hawaii, Department of Transportation, Airports Division Bishop Museum Technical Report 58 Honolulu, Hawaii January 2012 Bishop Museum Press 1525 Bernice Street Honolulu, Hawai‘i Copyright 2012 Bishop Museum All Rights Reserved Printed in the United States of America ISSN 1085-455X Contribution No. 2012 001 to the Hawaii Biological Survey COVER Adult male Hawaiian long-horned wood-borer, Plagithmysus kahului, on its host plant Chenopodium oahuense. This species is endemic to lowland Maui and was discovered during the arthropod surveys. Photograph by Forest and Kim Starr, Makawao, Maui. Used with permission. Hawaii Biological Report on Monitoring Arthropods within Kahului Airport Environs, Synthesis TABLE OF CONTENTS Table of Contents …………….......................................................……………...........……………..…..….i. Executive Summary …….....................................................…………………...........……………..…..….1 Introduction ..................................................................………………………...........……………..…..….4
    [Show full text]
  • Citation: Badenes-Pérez, F. R. 2019. Trap Crops and Insectary Plants in the Order 2 Brassicales
    1 Citation: Badenes-Pérez, F. R. 2019. Trap Crops and Insectary Plants in the Order 2 Brassicales. Annals of the Entomological Society of America 112: 318-329. 3 https://doi.org/10.1093/aesa/say043 4 5 6 Trap Crops and Insectary Plants in the Order Brassicales 7 Francisco Rubén Badenes-Perez 8 Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, 28006 9 Madrid, Spain 10 E-mail: [email protected] 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ABSTRACT This paper reviews the most important cases of trap crops and insectary 26 plants in the order Brassicales. Most trap crops in the order Brassicales target insects that 27 are specialist in plants belonging to this order, such as the diamondback moth, Plutella 28 xylostella L. (Lepidoptera: Plutellidae), the pollen beetle, Meligethes aeneus Fabricius 29 (Coleoptera: Nitidulidae), and flea beetles inthe genera Phyllotreta Psylliodes 30 (Coleoptera: Chrysomelidae). In most cases, the mode of action of these trap crops is the 31 preferential attraction of the insect pest for the trap crop located next to the main crop. 32 With one exception, these trap crops in the order Brassicales have been used with 33 brassicaceous crops. Insectary plants in the order Brassicales attract a wide variety of 34 natural enemies, but most studies focus on their effect on aphidofagous hoverflies and 35 parasitoids. The parasitoids benefiting from insectary plants in the order Brassicales 36 target insects pests ranging from specialists, such as P. xylostella, to highly polyfagous, 37 such as the stink bugs Euschistus conspersus Uhler and Thyanta pallidovirens Stål 38 (Hemiptera: Pentatomidae).
    [Show full text]
  • Vibratory Communication and Its Relevance to Reproductive Isolation in Two Sympatric Stink Bug Species (Hemiptera: Pentatomidae: Pentatominae)
    J Insect Behav (2016) 29:643–665 DOI 10.1007/s10905-016-9585-x Vibratory Communication and its Relevance to Reproductive Isolation in two Sympatric Stink Bug Species (Hemiptera: Pentatomidae: Pentatominae) Raul A. Laumann1 & Andrej Čokl2 & Maria Carolina Blassioli-Moraes1 & Miguel Borges1 Revised: 5 October 2016 /Accepted: 18 October 2016 / Published online: 29 October 2016 # Springer Science+Business Media New York 2016 Abstract Communication is in phytophagous stink bugs of the subfamily Pentatominae related to mating behavior that among others includes location and recognition of the partner during calling and courting. Differences in temporal and frequency parameters of vibratory signals contributes to species reproductive isolation. Chinavia impicticornis and C. ubica are two green Neotropical stink bugs that live and mate on the same host plants. We tested the hypothesis that differences in temporal and spectral characteristics of both species vibratory signals enable their recognition to that extent that it interrupts further interspecific communication and copulation. To confirm or reject this hypothesis we monitored both species mating behaviour and recorded their vibratory songs on the non-resonant loudspeaker membranes and on the plant. The level of interspecific vibratory communication was tested also by playback experi- ments. Reproductive behavior and vibratory communication show similar patterns in both Chinavia species. Differences observed in temporal and spectral characteristics of female and male signals enable species discrimination by PCA analyses. Insects that respond to heterospecific vibratory signals do not step forward to behaviors leading to copulation. Results suggest that species isolation takes place in both investigated Chinavia species at an early stage of mating behavior reducing reproductive interfer- ence and the probability of heterospecific mating.
    [Show full text]
  • Dr. Frank G. Zalom
    Award Category: Lifetime Achievement The Lifetime Achievement in IPM Award goes to an individual who has devoted his or her career to implementing IPM in a specific environment. The awardee must have devoted their career to enhancing integrated pest management in implementation, team building, and integration across pests, commodities, systems, and disciplines. New for the 9th International IPM Symposium The Lifetime Achievement winner will be invited to present his or other invited to present his or her own success story as the closing plenary speaker. At the same time, the winner will also be invited to publish one article on their success of their program in the Journal of IPM, with no fee for submission. Nominator Name: Steve Nadler Nominator Company/Affiliation: Department of Entomology and Nematology, University of California, Davis Nominator Title: Professor and Chair Nominator Phone: 530-752-2121 Nominator Email: [email protected] Nominee Name of Individual: Frank Zalom Nominee Affiliation (if applicable): University of California, Davis Nominee Title (if applicable): Distinguished Professor and IPM specialist, Department of Entomology and Nematology, University of California, Davis Nominee Phone: 530-752-3687 Nominee Email: [email protected] Attachments: Please include the Nominee's Vita (Nominator you can either provide a direct link to nominee's Vita or send email to Janet Hurley at [email protected] with subject line "IPM Lifetime Achievement Award Vita include nominee name".) Summary of nominee’s accomplishments (500 words or less): Describe the goals of the nominee’s program being nominated; why was the program conducted? What condition does this activity address? (250 words or less): Describe the level of integration across pests, commodities, systems and/or disciplines that were involved.
    [Show full text]
  • Descriptions of Nymphal Instars of Thyanta Calceata (Hemiptera: Pentatomidae)
    The Great Lakes Entomologist Volume 15 Number 4 - Winter 1982 Number 4 - Winter Article 2 1982 December 1982 Descriptions of Nymphal Instars of Thyanta Calceata (Hemiptera: Pentatomidae) S. M. Paskewitz Southern Illinois University J. E. McPherson Southern Illinois University Follow this and additional works at: https://scholar.valpo.edu/tgle Part of the Entomology Commons Recommended Citation Paskewitz, S. M. and McPherson, J. E. 1982. "Descriptions of Nymphal Instars of Thyanta Calceata (Hemiptera: Pentatomidae)," The Great Lakes Entomologist, vol 15 (4) Available at: https://scholar.valpo.edu/tgle/vol15/iss4/2 This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. It has been accepted for inclusion in The Great Lakes Entomologist by an authorized administrator of ValpoScholar. For more information, please contact a ValpoScholar staff member at [email protected]. Paskewitz and McPherson: Descriptions of Nymphal Instars of <i>Thyanta Calceata</i> (Hemip 1982 THE GREAT LAKES ENTOMOLOGIST 231 DESCRIPTIONS OF NYMPHAL INSTARS OF THYANTA CALCEATA (HEMIPTERA: PENTATOMJDAE) S. M. Paskewitz and J. E. McPherson I ABSTRACT The external anatomy of each of the five nymphal instars of Thyanta calceata is de­ scribed. Thyanta calceata (Say) ranges from New England south to Florida, and west to Michigan, Illinois. and }'lissouri (McPherson 1982). Much is known ofthe biology ofthis phytophagous stink bug including its life cycle and food plants (McPherson 1982). Of the immature stages. however. only the eggs (Oetting and Yonke 197/) have been described. Presented here are descriptions of the five nymphal instars. METHODS AND MATERIALS .symphs used for the descriptions were from F2 laboratory stock; the stock had originally been established with individuals collected July-August 1981, in Greene County and Craig­ head County.
    [Show full text]
  • Sensitivity of Immature Thyanta Calceata (Hemiptera: Pentatomidae) to Photoperiod As Reflected Yb Adult Color and Pubescence
    The Great Lakes Entomologist Volume 11 Number 1 - Spring 1978 Number 1 - Spring 1978 Article 10 April 1978 Sensitivity of Immature Thyanta Calceata (Hemiptera: Pentatomidae) to Photoperiod as Reflected yb Adult Color and Pubescence J. E. McPherson Southern Illinois University Follow this and additional works at: https://scholar.valpo.edu/tgle Part of the Entomology Commons Recommended Citation McPherson, J. E. 1978. "Sensitivity of Immature Thyanta Calceata (Hemiptera: Pentatomidae) to Photoperiod as Reflected yb Adult Color and Pubescence," The Great Lakes Entomologist, vol 11 (1) Available at: https://scholar.valpo.edu/tgle/vol11/iss1/10 This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. It has been accepted for inclusion in The Great Lakes Entomologist by an authorized administrator of ValpoScholar. For more information, please contact a ValpoScholar staff member at [email protected]. McPherson: Sensitivity of Immature <i>Thyanta Calceata</i> (Hemiptera: Penta THE GREAT LAKES ENTOMOLOGIST SENSITIVITY OF IMMATURE THYANTA CALCEATA (HEMIPTERA: PENTATOMIDAE) TO PHOTOPERIOD AS REFLECTED BY ADULT COLOR AND PUBESCENCE^ ABSTRACT Dimorphism in color and pubescence of adult Thyanta calceata, in response to 8L:16D and 16L:8D photoperiods, resulted from an accumulation of photoperiod effects on two or more immature stages. More immature stages were receptive to 8L:16D than to 16L:8D photoperiod influence. Thyanta calceata (Say) occurs from New England south to Florida and west to Illinois (Blatchley, 1926) and Missouri (Oetting and Yonke, 1971). Ruckes (1957) felt it was seasonally dimorphic, with brown "autumnal-vernal" adults clothed in long seta-like hairs and "summer" adults in short hairs (less than diameter of tibiae).
    [Show full text]