DOCSLIB.ORG

Honeydew Collecting in Malagasy Stingless Bees (Hymenoptera: Apidae: Meliponini) and Observations on Competition with Invasive Ants

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Honeydew Collecting in Malagasy Stingless Bees (Hymenoptera: Apidae: Meliponini) and Observations on Competition with Invasive Ants See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/232669144 Honeydew Collecting in Malagasy Stingless Bees (Hymenoptera: Apidae: Meliponini) and Observations on Competition with Invasive Ants Article in African Entomology · April 2011 DOI: 10.4001/003.019.0111 CITATIONS READS 6 127 3 authors, including: Hauke Koch Marlotte Jonker University of Texas at Austin University of Freiburg 33 PUBLICATIONS 891 CITATIONS 3 PUBLICATIONS 15 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: TBA course View project ConFoBi - Conservation of Forest Biodiversity in Multiple-use Landscapes of Central Europe View project All content following this page was uploaded by Hauke Koch on 17 August 2014. The user has requested enhancement of the downloaded file. Honeydew collecting in Malagasy stingless bees (Hymenoptera: Apidae: Meliponini) and observations on competition with invasive ants H. Koch1*, C. Corcoran2 & M. Jonker3 1Experimental Ecology, Institute for Integrative Biology, ETH Zurich, Universitätsstrasse 16, 8092 Zurich, Switzerland 2Trinity College Dublin, Dublin 2, Ireland 3Resource Ecology Group, Wageningen University, Droevendaalsesteeg 3a, 6708PB Wageningen, Netherlands We present the first record of honeydew feeding in Malagasy stingless bees. Two species of stingless bees, Liotrigona mahafalya and L. madecassa, collected honeydew produced by mealybugs on an Albizia perrieri (Fabaceae) tree in the dry deciduous forest of Kirindy, Madagascar. Honeydew might represent an important part of the diet of Malagasy stingless bees, especially in times of scarce floral resources in the highly seasonal environment of western Madagascar. The interaction between the bees and two species of invasive ants, Monomorium destructor and Paratrechina longicornis, in competition for the honeydew resource, was studied. Numbers of stingless bees and ants on the honeydew source were negatively correlated, with ants decreasing in density distally from the main trunk of the tree and bees showing the opposite trend. Invasive ants could therefore potentially threaten the native bees by displacing them from this resource. Key words: mealybugs, honeydew, Madagascar, Liotrigona, nonfloral resources, displace- ment. INTRODUCTION Honeydew produced by sap-sucking Homoptera dew from aphids tended by the ants. Honey bees is an important resource for a variety of organisms. avoided foraging at honeydew sources occupied by Ant-homopteran associations are often mutualistic ants (Zoebelein 1956b). Ant colonies often monop- and are especially well documented; in these rela- olize the honeydew resource on a particular plant tionships ants protect their homopteran partners and defend it against other inter- or intraspecific against predators and parasites (Schultz & competitors, but coexistence of several ant species McGlynn 2000) and often rely on honeydew as can also occur (Blüthgen et al. 2006). Stingless bees their most important food source (Davidson et al. of the genus Trigona can chemically deter ants 2003). from their nests, presumably with plant-derived Bees are also known to collect honeydew, in- terpenes, although it is not known if these deter- cluding honey bees (Apis spp.), bumble bees rents are also used in competition for resources (Bombus spp.) and several species from the family against other ants (Lehmberg et al. 2008). Andrenidae (Zoebelein 1956a). A few Neotropical The highly social stingless bees (Meliponini) are species of stingless bees have also been observed represented in Madagascar by eight species in the to collect honeydew from hemipterans (Roubik genus Liotrigona (Pauly et al. 2001; Koch 2010). 1989), and a species of Schwarzula even houses While several species inhabit the rainforests of the scale insects (Coccidae) inside their nest for this east (Michener 1990), they are most abundant in purpose (Camargo & Pedro 2002). Until now, how- the dry regions of the south and west, where the ever, there are to our knowledge no reports from local people also harvest honey from their nests the Afrotropical Region, including Madagascar, of (Brooks & Michener 1988). These bees appear to be stingless bees foraging for honeydew. polylectic foragers on pollen and nectar and nest Very few accounts exist on the interactions in tree cavities or bamboo stems (Pauly et al. 2001). between bees and ants, especially in competition In November 2009, we observed two species of for honeydew. Zoebelein (1956b), for example, Liotrigona, L. madecassa and L. mahafalya, collecting notes aggressive behaviour of Formica ants against honeydew from an unidentified species of mealy- honey bees (Apis mellifera) that try to collect honey- bug (Pseudococcidae) on a tree, Albizia perrieri *To whom correspondence should be addressed. (Fabaceae), in the dry deciduous forest of Kirindy, E-mail: [email protected] Madagascar. The same food source was also used African Entomology 19(1): 36–41 (2011) Koch et al.: Honeydew collecting in Malagasy stingless bees 37 by two species of invasive ants, Monomorium availability for mealybugs, we counted the number destructor and Paratrechina longicornis. Since the of leaves for each branch segment. tree was standing freely and both ant species were To assess the temporal variation of ant activity of nesting either in the base of the trunk or in the the different ant species on the tree, the number of ground nearby, the ants had to travel along the ants crossing a line around the trunk of the tree at trunk and main branches to reach the honeydew 1.5 m height was counted for 5 minutes every hour resource. Therefore, we expected the density of starting at 4:25 until 19:25 and again at 22:05 on ants to decrease with increased pathway length four consecutive days. Since no ants were observed (i.e. to honeydew resources distal from the trunk). nesting in the tree itself, this provided an estimate Bees on the other hand are not constrained in this of the relative numbers of ants foraging for honey- way, since they can fly to the best available resource dew at different times during the day. The ambient site in the tree. We therefore hypothesized that the temperature was recorded using a digital thermo- mealybugs that are further away from the trunk meter within a shaded crevice of the tree. would be visited mainly by bees and less visited by ants. We sampled units of mealybug assemblages Statistical analysis across the tree at different distances from the Relationships between the different variables trunk to test this predicted association. were assessed with Spearman rank correlations calculated using Minitab® (Release 13.32) statisti- MATERIAL AND METHODS cal software. A scatter plot of the density of ant and stingless bee individuals against the pathway Ant/stingless bee comparison distance was produced and trendlines were fitted Observations were made on four consecutive to the data points via a nonlinear regression days at the end of the dry season in November assuming a logistic population growth model 2009 on a freestanding Albizia perrieri on the (b1/1 + exp(b2+b3×x) in IBM SPSS Statistics 19 grounds of the Centre National de Formation, (2010). d’Études et de Recherche en Environement et Forestière (CNFEREF) field station (20°03’S RESULTS 44°39’E), approximately 60 km northeast of the city of Morondava in the Menabe region of west- General observations central Madagascar. Liotrigona madecassa and L. mahafalya were In order to test for different spatial distributions observed landing on mealybug assemblages on of ants and bees on the study tree we observed the study tree and ingesting excess honeydew. No 15 cm segments of different randomly selected specific behaviour by the bees to stimulate honey- branches (n = 18), which were evenly distributed dew production by mealybugs was observed. Bees along the accessible parts of the tree. The number were most abundant in the morning and late after- of ants, stingless bees and mealybugs present in noon with more than one hundred individuals each segment were recorded twice daily, between visiting the tree simultaneously during observa- 8:00–9:00 and 17:00–18:00, coinciding with the tion times. Bee activity ceased completely towards peak activity of the bees (H. Koch, C. Corcoran, M. midday and at night. Two ant species, Monomorium Jonker, pers. obs.), for two days. The numbers of destructor and Paratrechina longicornis, were observed bees, ants and mealybugs were averaged over all foraging on honeydew at the same time as the four of these observations per segment. The exact bees. M. destructor was the most abundant of these number of mealybugs present was difficult to ants on the observed mealybug units with assess, therefore only the number of adult females 708 individuals out of 734 ants counted in total visible with the aid of a hand lens, was counted (96%). Figure 1 shows the activity of M. destructor as an estimate. The length of the pathway was and P. longicornis during the course of the day on measured as the shortest distance along branches the study tree. P.longicornis appeared to be crepus- from the ground to a particular mealybug assem- cular, with highest activities during dusk and blage. Mealybugs were mostly clustered around dawn and no activity from 10:00 to 15:00. By the bases of both existing and newly emerging contrast, M. destructor was more active towards leaves, where they gained access to the phloem midday and showed reduced activity during the with their proboscis. To approximate resource night. Accordingly, the activity of M. destructor was 38 African Entomology Vol. 19, No. 1, 2011 Fig. 1. Diel activity of Paratrechina longicornis and Monomorium destructor on the studied tree as measured by number of individuals crossing a line around the tree trunk in five-minute intervals, counted on four consecutive days. positively correlated with temperature (Spearman presence of mealybugs or pathway distance. rank correlation, r = 0.569, P < 0.001, n = 44), while An exponential decrease of ant abundance per P.
Load more

Recommended publications
  • Insect Control Update
    Insect Control Update Diane Alston Utah State University Extension 2006 Pesticide Recertification Workshops Topics ◘ Pest – Japanese Beetle ◘ Insect Diagnostics – Recognizing Common Insects & Plant Injury ◘ Examples of Insect Pests ◘ Woody Ornamentals ◘ Greenhouse ◘ Turf Japanese Beetle Popillia japonica Scarab Beetle First found in U.S. in 1916 Orem, Utah: July 2006 >600 adults Mating pair of adults Trap: Sex pheromone/ Floral lure Adult feeding injury to Virginia Creeper Japanese Beetle Primarily a turf pest – Larvae or grubs feed on grass roots Adults have a broad host range – Skeletonize leaves – rose, fruit trees, shade trees, grape, etc. Injury to rose Injury to crabapple Japanese Beetle Management ◘ Eradication is extremely difficult ◘ Don’t panic – it’s unlikely to have a large impact ◘ Keep plants healthy ◘ Plant non-attractive plants (lilac, forsythia, dogwood, magnolia, American Holly) ◘ If detected in turf, control larvae with insecticides (imidacloprid, carbaryl, permethrin) ◘ Traps can provide some adult suppression (75% catch; but can attract them into an area) ◘ Contact local Utah Dept. of Agriculture and Food Office Japanese Beetle Fact Sheet on USU Extension Web Site http://extension.usu.edu/files/publications/factsheet/ENT-100-06PR-A.pdf Insect Diagnosis Insect is present Injury is present What type of injury? Friend or Foe? What life stage is present? Insect Feeding Types Borers Chewing Piercing-Sucking Gall Formers Diagnosis Scouting for Pests ◘ Look at the big picture ◘ Pattern of plant decline/injury ◘ Pest injury
    [Show full text]
  • MF3001 Mealybug
    i Mealybug Management in Greenhouses and Interiorscapes Mealybugs are major insect pests of greenhouse and interiorscape environments (including conservatories) where they feed on a wide range of plants and are difficult to manage (suppress) with insecticides. Host plant range depends on the particular mealybug species but includes herbaceous annuals or perennials, foliage plants, orchids, vegetables, and herbs. Specific plants include aglaonema, begonia, chrysanthemum, coleus (Solenostemon scutel- larioides), croton (Codiaeum variegatum), dracaena, false aralia (Dizygotheca elegantissima), ficus, grape ivy (Cissus rhombifolia), marigold, poinsettia (Euphorbia pulcherrima), pothos (Epipremnum aureum), and transvaal daisy (Gerbera jamesonii). A number of mealybug species may be found in green- Figure 3. Mealybug life cycle houses and interiorscapes, but the predominant species are the citrus mealybug, Planococcus citri and the longtailed (Figure 4), and do not mealybug, Pseudococcus longispinus. In addition to these have to mate to repro- two species, which feed aboveground, root mealybugs duce (this is referred (Rhizoecus spp.) are of concern because they are extremely to as parthenogen- difficult to detect and manage with available insecticides. esis). Eggs hatch into Biology and Damage crawlers that actively move around seeking Mealybugs are elliptical in shape with white, waxy protru- places to settle and feed. sions extending from the body (Figure 1). Females are Crawlers are yellow- white, wingless and 2 to 5 mm long when full-grown, Figure 4. Long-tailed mealybugs orange (Figure 5), even- (Figure 2). Males are tually turning white af- typically smaller. Most ter each successive molt. mealybug species Once settled, mealybugs reproduce asexually progress through several (lay eggs). The typi- growth stages before cal female mealybug becoming adults.
    [Show full text]
  • Evaluation of RNA Interference for Control of the Grape Mealybug Pseudococcus Maritimus (Hemiptera: Pseudococcidae)
    insects Article Evaluation of RNA Interference for Control of the Grape Mealybug Pseudococcus maritimus (Hemiptera: Pseudococcidae) Arinder K. Arora 1, Noah Clark 1, Karen S. Wentworth 2, Stephen Hesler 2, Marc Fuchs 3 , Greg Loeb 2 and Angela E. Douglas 1,4,* 1 Department of Entomology, Cornell University, Ithaca, NY 14850, USA; [email protected] (A.K.A.); [email protected] (N.C.) 2 Department of Entomology, Cornell University, Geneva, NY 14456, USA; [email protected] (K.S.W.); [email protected] (S.H.); [email protected] (G.L.) 3 School of Integrative Plant Science, Cornell University, Geneva, NY 14456, USA; [email protected] 4 Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA * Correspondence: [email protected] Received: 19 September 2020; Accepted: 26 October 2020; Published: 28 October 2020 Simple Summary: RNA interference (RNAi) is a defense mechanism that protects insects from viruses by targeting and degrading RNA. This feature has been exploited to reduce the expression of endogenous RNA for determining functions of various genes and for killing insect pests by targeting genes that are vital for insect survival. When dsRNA matching perfectly to the target RNA is administered, the RNAi machinery dices the dsRNA into ~21 bp fragments (known as siRNAs) and one strand of siRNA is employed by the RNAi machinery to target and degrade the target RNA. In this study we used a cocktail of dsRNAs targeting grape mealybug’s aquaporin and sucrase genes to kill the insect. Aquaporins and sucrases are important genes enabling these insects to maintain water relations indispensable for survival and digest complex sugars in the diet of plant sap-feeding insects, including mealybugs.
    [Show full text]
  • An Investigation Into the Integrated Pest Management of The
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Stellenbosch University SUNScholar Repository An investigation into the integrated pest management of the obscure mealybug, Pseudococcus viburni (Signoret) (Hemiptera: Pseudococcidae), in pome fruit orchards in the Western Cape Province, South Africa. Pride Mudavanhu Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Agriculture (Entomology), in the Faculty of AgriSciences. at the University of Stellenbosch Supervisor: Dr Pia Addison Department of Conservation Ecology and Entomology Faculty of AgriSciences University of Stellenbosch South Africa December 2009 DECLARATION By submitting this dissertation electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the owner of the copyright thereof (unless to the extent explicitly otherwise stated) and that I have not previously in its entirety or in part submitted it for obtaining any qualification. December 2009 Copyright © 2009 Stellenbosch University All rights reserved i ABSTRACT Pseudococcus viburni (Signoret) (Hemiptera: Pseudococcidae) (obscure mealybug), is a common and serious pest of apples and pears in South Africa. Consumer and regulatory pressure to produce commodities under sustainable and ecologically compatible conditions has rendered chemical control options increasingly limited. Information on the seasonal occurrence of pests is but one of the vital components of an effective and sustainable integrated pest management system needed for planning the initiation of monitoring and determining when damage can be expected. It is also important to identify which orchards are at risk of developing mealybug infestations while development of effective and early monitoring tools for mealybug populations will help growers in making decisions with regards to pest management and crop suitability for various markets.
    [Show full text]
  • Sucrose Triggers Honeydew Preference in the Ghost Ant, Tapinoma Melanocephalum (Hymenoptera: Formicidae) A
    Sucrose triggers honeydew preference in the ghost ant, Tapinoma melanocephalum (Hymenoptera: Formicidae) A. M. Zhou1, 2,*, B. Q. Kuang2, Y. R. Gao2, and G. W. Liang2 Abstract Honeydew produced by hemipterans mediates mutualistic interactions between ants and hemipterans. Previous studies demonstrated that the mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) and the aphid Myzus persicae (Sulzer) (Hemiptera: Aphididae) produce abundant honeydew and attract a large number of tending ants. Ghost ants, Tapinoma melanocephalum (F.) (Hymenoptera: Formicidae), show a significant preference for mealybug honeydew over aphid honeydew. Although many studies have indicated that the honeydew produced by hemip- terans plays an important role in ant–hemipteran interactions, we know little about what triggers ants’ foraging preferences. Our results showed that the honeydew produced by both mealybugs and aphids contained fructose, sucrose, trehalose, melezitose, raffinose, and rhamnose. There were no significant difference in the concentrations of the various sugars between mealybugs and aphids, except sucrose. Xylose was present only in mealy- bug honeydew, and glucose was present only in aphid honeydew. We also found no substantial difference in the excretion frequency and the total weight of honeydew produced per 24 h between mealybugs and aphids. Ghost ants preferred sucrose. In addition, attractiveness of sucrose solutions increased significantly with increasing concentration. These results suggest that sucrose is the trigger for ghost ants’ honeydew preference. Key Words: ant–hemipteran mutualism; sugar composition; sugar concentration Resumen La mielcilla producida por hemípteros regula las interacciones mutualistas entre las hormigas y los hemípteros. Los estudios anteriores demostraron que la cochinilla harinosa Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) y el áfido Myzus persicae (Sulzer) (Hemiptera: Aphididae) producen mielcilla abundante y atraen a un gran número de hormigas que atienden.
    [Show full text]
  • Worldwide Spread of the Difficult White-Footed Ant, Technomyrmex Difficilis (Hymeno- Ptera: Formicidae)
    Myrmecological News 18 93-97 Vienna, March 2013 Worldwide spread of the difficult white-footed ant, Technomyrmex difficilis (Hymeno- ptera: Formicidae) James K. WETTERER Abstract Technomyrmex difficilis FOREL, 1892 is apparently native to Madagascar, but began spreading through Southeast Asia and Oceania more than 60 years ago. In 1986, T. difficilis was first found in the New World, but until 2007 it was mis- identified as Technomyrmex albipes (SMITH, 1861). Here, I examine the worldwide spread of T. difficilis. I compiled Technomyrmex difficilis specimen records from > 200 sites, documenting the earliest known T. difficilis records for 33 geographic areas (countries, island groups, major islands, and US states), including several for which I found no previously published records: the Bahamas, Honduras, Jamaica, the Mascarene Islands, Missouri, Oklahoma, South Africa, and Washington DC. Almost all outdoor records of Technomyrmex difficilis are from tropical areas, extending into the subtropics only in Madagascar, South Africa, the southeastern US, and the Bahamas. In addition, there are several indoor records of T. dif- ficilis from greenhouses at zoos and botanical gardens in temperate parts of the US. Over the past few years, T. difficilis has become a dominant arboreal ant at numerous sites in Florida and the West Indies. Unfortunately, T. difficilis ap- pears to be able to invade intact forest habitats, where it can more readily impact native species. It is likely that in the coming years, T. difficilis will become increasingly more important as a pest in Florida and the West Indies. Key words: Biogeography, biological invasion, exotic species, invasive species. Myrmecol. News 18: 93-97 (online 19 February 2013) ISSN 1994-4136 (print), ISSN 1997-3500 (online) Received 28 November 2012; revision received 7 January 2013; accepted 9 January 2013 Subject Editor: Florian M.
    [Show full text]
  • Pink Hibiscus Mealybug (Maconellicoccus Hirsutus) Introduced: 2002 (Broward County) Seasonality: PHM Can Be Found Year- Round in Southern Florida
    Pink Hibiscus Mealybug (Maconellicoccus hirsutus) Introduced: 2002 (Broward County) Seasonality: PHM can be found year- round in southern Florida. Current Infestation: Pink hibiscus mealybug has been found in more than Hosts: Numerous tropical and 30 counties throughout Florida. subtropical fruits, vegetables, ornamental plants, and tropical forest trees. Description/Biology: The life cycle of Examples include hibiscus, citrus, sugar the pink hibiscus mealybug (PHM) is cane, annonas, guava, mango, okra, about 23-30 days. Females can lay up to sorrel, pigeon pea, peanut, grape vines, 600 eggs. Eggs are laid in a loosely corn, chrysanthemum, beans, cotton, woven white egg sac. The eggs are soybean, and many other plants. initially Hibiscus appears to be the preferred orange host. and then become Im portance: This mealybug has pink before devastated agricultural crops in many hatching. parts of the world. It can kill plants and Newly has the potential to be easily spread to hatched new locations. nymphs can walk considerable distances or be Dam age: The mealybug forms colonies picked up by wind currents and blown to on the host plant which can grow into new feeding sites. large masses of white, waxy deposits on branches, flower buds, fruits, leaves, and Adult female whole plants. Mealybug feeding results mealybugs in malformed leaf are about * and shoot growth, inch long (3 stunting, and mm), body occasionally death. color is pink and covered with a white, waxy secretion. A few other mealybug species look similar to PHM, however they usually do not cause severe plant responses. Commercial growers should consult an entomologist if PHM is suspected.
    [Show full text]
  • Species Composition and Interactions Within a Human-Constructed Ecosystem
    Biosphere 2 Reexamined: Species Composition and Interactions Within a Human-Constructed Ecosystem Item Type text; Electronic Thesis Authors Dinell, Hannah Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction, presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 03/10/2021 01:04:40 Link to Item http://hdl.handle.net/10150/633071 BIOSPHERE 2 REEXAMINED: SPECIES COMPOSITION AND INTERACTIONS WITHIN A HUMAN-CONSTRUCTED ECOSYSTEM by Hannah Dinell ____________________________ Copyright © Hannah Dinell 2019 A Thesis Submitted to the Faculty of the DEPARTMENT OF ECOLOGY AND EVOLUTIONARY BIOLOGY In Partial Fulfillment of the Requirements For the Degree of MASTER OF SCIENCE In the Graduate College THE UNIVERSITY OF ARIZONA 2019 2 THE UNIVERSITY OF ARIZONA GRADUATE COLLEGE As members of the Master’s Committee, we certify that we have read the thesis prepared by Hannah Dinell, titled Biosphere 2 Reexamined: Species Composition and Interactions Within a Human-Constructed Ecosystem and recommend that it be accepted as fulfilling the dissertation requirement for the Master’s Degree. _______________________________________________________________ Date: 5/8/19 Judith Bronstein _________________________________________________________________ Date: 5/8/19 Kate Mathis _________________________________________________________________ Date: 5/8/19 Martha Hunter Final approval and acceptance of this thesis is contingent upon the candidate’s submission of the final copies of the thesis to the Graduate College. I hereby certify that I have read this thesis prepared under my direction and recommend that it be accepted as fulfilling the Master’s requirement.
    [Show full text]
  • Management Options for Mealybug in Persimmon
    Scoping study: management options for mealybug in persimmon Dr Lara Senior The Department of Agriculture, Fisheries and Forestry, QLD Project Number: PR11000 PR11000 This report is published by Horticulture Australia Ltd to pass on information concerning horticultural research and development undertaken for the persimmon industry. The research contained in this report was funded by Horticulture Australia Ltd with the financial support of the persimmon industry. All expressions of opinion are not to be regarded as expressing the opinion of Horticulture Australia Ltd or any authority of the Australian Government. The Company and the Australian Government accept no responsibility for any of the opinions or the accuracy of the information contained in this report and readers should rely upon their own enquiries in making decisions concerning their own interests. ISBN 0 7341 3021 X Published and distributed by: Horticulture Australia Ltd Level 7 179 Elizabeth Street Sydney NSW 2000 Telephone: (02) 8295 2300 Fax: (02) 8295 2399 © Copyright 2012 Scoping study: management options for mealybug in persimmon (FINAL REPORT) Project Number: PR11000 (1st December 2012) Dr Lara Senior Queensland Department of Agriculture, Fisheries and Forestry Scoping study: management options for mealybug in persimmon HAL Project Number: PR11000 1st December 2012 Project leader: Dr Lara Senior Entomologist Agri-Science Queensland Department of Agriculture, Fisheries and Forestry Gatton Research Station Locked Bag 7, Mail Service 437 Gatton, QLD 4343 Tel: 07 5466 2222 Fax: 07 5462 3223 Email: [email protected] Key personnel: Grant Bignell1, Bob Nissen2, Greg Baker3 1. 1 Department of Agriculture, Fisheries and Forestry, Nambour Qld 2.
    [Show full text]
  • Leafroll & Red Blotch
    Managing Insects that Vector Pathogens: Leafroll & Red Blotch Kent Daane, Monica Cooper, Rodrigo Almeida, Kai Blaisdel, Alexis Billings, Kelsey Schall (UC Berkeley) Houston Wilson (UC Riverside) Grape leafroll associated virus Grape red botch (associated virus) Both pathogens impact crop vigor, yield and quality, (reduced photosynthesis, delayed fruit maturation, lower Brix, fruit chemistry) November 11-13, 2019 | San Luis Obispo, California Outline – Vector Control and GLRaV . GLRaV Control Programs a) leafroll and mealybugs b) leafroll epidemiology (difference with GRBV) . Mealybug Controls a) insecticides – current studies b) biological controls – a review c) mating disruption . Areawide or strategic control for GLRaV November 11-13, 2019 | San Luis Obispo, California Outline – Vector Control and GLRaV . GLRaV Control Programs a) leafroll and mealybugs b) leafroll epidemiology (difference with GRBV) . Mealybug Controls a) insecticides – current studies b) biological controls – a review c) mating disruption . Areawide or strategic control for GLRaV November 11-13, 2019 | San Luis Obispo, California Outline – Vector Control and GLRaV . GLRaV Control Programs a) leafroll and mealybugs b) leafroll epidemiology (difference with GRBV) . Mealybug Controls a) insecticides – current studies b) biological controls – a review c) mating disruption . Areawide or strategic control for GLRaV November 11-13, 2019 | San Luis Obispo, California Which leafroll species (or strain) do you have? Sharma et al. PLoS One. 2011 November 11-13, 2019 | San Luis Obispo, California Mealybugs are also vectors grape leafroll associated viruses (GLRaVs) photo courtesy of Deborah Golino November 11-13, 2019 | San Luis Obispo, California Importance of vectors in movement of GLRaV are seen in Deborah Golino’s 2002- 2006 mapping of annual movement November 11-13, 2019 | San Luis Obispo, California GLRaV Insect Vectors • >700 plant viruses • ca.
    [Show full text]
  • Acacia Flat Mite (Brevipalpus Acadiae Ryke & Meyer, Tenuipalpidae, Acarina): Doringboomplatmyt
    Creepie-crawlies and such comprising: Common Names of Insects 1963, indicated as CNI Butterfly List 1959, indicated as BL Some names the sources of which are unknown, and indicated as such Gewone Insekname SKOENLAPPERLYS INSLUITENDE BOSLUISE, MYTE, SAAMGESTEL DEUR DIE AALWURMS EN SPINNEKOPPE LANDBOUTAALKOMITEE Saamgestel deur die MET MEDEWERKING VAN NAVORSINGSINSTITUUT VIR DIE PLANTBESKERMING TAALDIENSBURO Departement van Landbou-tegniese Dienste VAN DIE met medewerking van die DEPARTEMENT VAN ONDERWYS, KUNS EN LANDBOUTAALKOMITEE WETENSKAP van die Taaldiensburo 1959 1963 BUTTERFLY LIST Common Names of Insects COMPILED BY THE INCLUDING TICKS, MITES, EELWORMS AGRICULTURAL TERMINOLOGY AND SPIDERS COMMITTEE Compiled by the IN COLLABORATION WiTH PLANT PROTECTION RESEARCH THE INSTITUTE LANGUAGE SERVICES BUREAU Department of Agricultural Technical Services OF THE in collaboration with the DEPARTMENT OF EDUCATION, ARTS AND AGRICULTURAL TERMINOLOGY SCIENCE COMMITTEE DIE STAATSDRUKKER + PRETORIA + THE of the Language Service Bureau GOVERNMENT PRINTER 1963 1959 Rekenaarmatig en leksikografies herverwerk deur PJ Taljaard e-mail enquiries: [email protected] EXPLANATORY NOTES 1 The list was alphabetised electronically. 2 On the target-language side, ie to the right of the :, synonyms are separated by a comma, e.g.: fission: klowing, splyting The sequence of the translated terms does NOT indicate any preference. Preferred terms are underlined. 3 Where catchwords of similar form are used as different parts of speech and confusion may therefore
    [Show full text]
  • Cassava-Mealybug Interactions
    Cassava-Mealybug Interactions Paul-André Calatayud Bruno Le Rü IRD I ACTIQUES Diffusion ✓ support papier support cédérom Cassava–Mealybug Interactions La collection « Didactiques » propose des ouvrages pratiques ou pédagogiques. Ouverte à toutes les thématiques, sans frontières disciplinaires, elle offre à un public élargi des outils éducatifs ou des mises au point méthodologiques qui favorisent l’application des résultats de la recherche menée dans les pays du Sud. Elle s’adresse aux chercheurs, enseignants et étudiants mais aussi aux praticiens, décideurs et acteurs du développement. JEAN-PHILIPPE CHIPPAUX Directeur de la collection [email protected] Parus dans la collection Venins de serpent et envenimations Jean-Philippe Chippaux Les procaryotes. Taxonomie et description des genres (cédérom) Jean-Louis Garcia, Pierre Roger Photothèque d’entomologie médicale (cédérom) Jean-Pierre Hervy, Philippe Boussès, Jacques Brunhes Lutte contre la maladie du sommeil et soins de santé primaire Claude Laveissière, André Garcia, Bocar Sané Outils d’enquête alimentaire par entretien Élaboration au Sénégal Marie-Claude Dop et al. Awna Parikwaki Introduction à la langue palikur de Guyane et de l’Amapá Michel Launey Grammaire du nengee Introduction aux langues aluku, ndyuka et pamaka Laurence Goury, Bettina Migge Pratique des essais cliniques en Afrique Jean-Philippe Chippaux Manuel de lutte contre la maladie du sommeil Claude Laveissière, Laurent Penchenier Cassava–Mealybug Interactions Paul-André Calatayud Bruno Le Rü IRD Éditions INSTITUT DE RECHERCHE POUR LE DÉVELOPPEMENT Collection Paris, 2006 Production progress chasing Corinne Lavagne Layout Bill Production Inside artwork Pierre Lopez Cover artwork Michelle Saint-Léger Cover photograph: C. Nardon/Cassava mealybug (Phenacoccus manihoti) La loi du 1er juillet 1992 (code de la propriété intellectuelle, première partie) n’autorisant, aux termes des alinéas 2 et 3 de l’article L.
    [Show full text]