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2013 Newsletter
&(17(5)25%,2/2*,&$/&21752/1(:6/(77(5 &(17(5)25%,2/2*,&$/&21752/ )$08&$)6 1(:6/(77(5 )ORULGD$ 08QLYHUVLW\ &2//(*(2)$*5,&8/785($1')22'6&,(1&(6 7DOODKDVVHH)/ 9ROXPH /DG\ELUGBHHWOH3UHGDWRU&KLORFRUXVFDFWL 0D\&RQWURO1HZ,QYDVLYH3HVWRI)ORULGD ,16,'(7+,6,668( Lambert Kanga, Ph.D. &U\SWLFHU\DJHQLVWDH (Hemiptera: Margarodidae) also known as soybean scale is an invasive scale insect native to Brazil. The insect was originally described as (GLWRULDO ,FHU\DJHQLVWDH by Hempel (1912). It has been found in Florida, Barbados, Puerto Rico, Guadeloupe, Dominican Republic and Haiti (Fig. 1). There is a very little information available on this scale insect and its biology. The overall 5HVHDUFKDQG2XWUHDFK1HZV economic significance of this scale insect varied between the different countries infested by the scale. In Florida, &U\SWLF\HUD attacked more than 50 hosts in several plant families. The insect pest has been responsible for repeated crop 6WXGHQW1HZV losses in peanut in Barbados and readily attacks plants in the Leguminoseae family, including soybeans. &U\SWLFHU\D JHQLVWDH destroyed crops in the northeast 3XEOLFDWLRQV3UHVHQWDWLRQV Haiti affecting more than 10,000 ha. Two natural enemies, the ladybird beetle ($QRYLDFLUFXPFOXVD) and a Phorid fly (6\QHJHXUD FRFFLSKLOD Coquillett) have 6HPLQDUVDQG:RUNVKRSV been reported to provide successful control of & JHQLVWDH. Preliminary results in our cage studiessuggested the ladybeetle predator, &KLORFRUXVFDFWL (Lin naeus) (Coleoptera: Coccinellidae) (Fig. 2) could also be a promising biological control agent for &U\SWLFHU\DJHQLVWDH. 'U/DPEHUW.DQJD 'LUHFWRU3URIHVVRU)$08&%& 'UJesusa/HJDVSL &R'LUHFWRU86'$$56&0$9(&%& 'U5REHUW7D\ORU'HDQDQG'LUHFWRU &ROOHJHRI$JULFXOWXUHDQG)RRG6FLHQFHV This Newsletter is published by the &HQWHUIRU%LRORJLFDO &RQWURO. -
Asian Citrus Psyllid, Diaphorina Citri Kuwayama (Insecta: Hemiptera: Psyllidae)1 F
EENY-033 Asian Citrus Psyllid, Diaphorina citri Kuwayama (Insecta: Hemiptera: Psyllidae)1 F. W. Mead and T. R. Fasulo2 Introduction In June 1998, the insect was detected on the east coast of Florida, from Broward to St. Lucie counties, and was The Asian citrus psyllid, Diaphorina citri Kuwayama, is apparently limited to dooryard host plantings at the time of widely distributed in southern Asia. It is an important pest its discovery. By September 2000, this pest had spread to 31 of citrus in several countries as it is a vector of a serious Florida counties (Halbert 2001). citrus disease called greening disease or Huanglongbing. This disease is responsible for the destruction of several Diaphorina citri is often referred to as citrus psylla, but this citrus industries in Asia and Africa (Manjunath 2008). is the same common name sometimes applied to Trioza Until recently, the Asian citrus psyllid did not occur in erytreae (Del Guercio), the psyllid pest of citrus in Africa. North America or Hawaii, but was reported in Brazil, by To avoid confusion, T. erytreae should be referred to as the Costa Lima (1942) and Catling (1970). African citrus psyllid or the two-spotted citrus psyllid (the latter name is in reference to a pair of spots on the base of the abdomen in late stage nymphs). These two psyllids are the only known vectors of the etiologic agent of citrus greening disease (Huanglongbing), and are the only eco- nomically important psyllid species on citrus in the world. Six other species of Diaphorina are reported on citrus, but these are non-vector species of relatively little importance (Halbert and Manjunath 2004). -
Invasive Insects (Adventive Pest Insects) in Florida1
Archival copy: for current recommendations see http://edis.ifas.ufl.edu or your local extension office. ENY-827 Invasive Insects (Adventive Pest Insects) in Florida1 J. H. Frank and M. C. Thomas2 What is an Invasive Insect? include some of the more obscure native species, which still are unrecorded; they do not include some The term 'invasive species' is defined as of the adventive species that have not yet been 'non-native species which threaten ecosystems, detected and/or identified; and they do not specify the habitats, or species' by the European Environment origin (native or adventive) of many species. Agency (2004). It is widely used by the news media and it has become a bureaucratese expression. This is How to Recognize a Pest the definition we accept here, except that for several reasons we prefer the word adventive (meaning they A value judgment must be made: among all arrived) to non-native. So, 'invasive insects' in adventive species in a defined area (Florida, for Florida are by definition a subset (those that are example), which ones are pests? We can classify the pests) of the species that have arrived from abroad more prominent examples, but cannot easily decide (adventive species = non-native species = whether the vast bulk of them are 'invasive' (= pests) nonindigenous species). We need to know which or not, for lack of evidence. To classify them all into insect species are adventive and, of those, which are pests and non-pests we must draw a line somewhere pests. in a continuum ranging from important pests through those that are uncommon and feed on nothing of How to Know That a Species is consequence to humans, to those that are beneficial. -
Annotation and Analysis of Yellow Genes in Diaphorina Citri, Vector for the Huanglongbing Disease Crissy Massimino1, Chad Vosburg1, Teresa Shippy2, Prashant S
bioRxiv preprint doi: https://doi.org/10.1101/2020.12.22.422960; this version posted December 22, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC 4.0 International license. Annotation and analysis of yellow genes in Diaphorina citri, vector for the Huanglongbing disease Crissy Massimino1, Chad Vosburg1, Teresa Shippy2, Prashant S. Hosmani3, Mirella Flores- Gonzalez3, Lukas A. Mueller3, Wayne B. Hunter4, Joshua B. Benoit5, Susan J. Brown2, Tom D’Elia1 and Surya Saha3,6 1 Indian River State College, Fort Pierce, FL 34981 2 Division of Biology, Kansas State University, Manhattan, KS 66506 3 Boyce Thompson Institute, Ithaca, NY 14853 4 USDA-ARS, U.S. Horticultural Research Laboratory, Fort Pierce, FL 34945 5 Department of Biological Sciences, University of Cincinnati, Cincinnati, OH, 45221 6 Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ 85721 ABSTRACT Huanglongbing (HLB), also known as citrus greening disease, is caused by the bacterium Candidatus Liberibacter asiaticus (CLas) and represents a serious threat to global citrus production. This bacteria is transmitted by the Asian citrus psyllid, Diaphorina citri (Hemiptera) and there are no effective in-planta treatments for CLas. Therefore, one strategy is to manage the psyllid population. Manual annotation of the D. citri genome can identify and characterize gene families that could serve as novel targets for psyllid control. The yellow gene family represents an excellent target as yellow genes are linked to development and immunity due to their roles in melanization. -
Biocontrol Program Targets Asian Citrus Psyllid in California's Urban
REVIEW ARTICLE Biocontrol program targets Asian citrus psyllid in California’s urban areas Two parasitoids of the Asian citrus psyllid, from Pakistan, have been released in Southern California with promising results. by Ivan Milosavljević, Kelsey Schall, Christina Hoddle, David Morgan and Mark Hoddle sian citrus psyllid (ACP), Diaphorina citri Ku- wayama (Hemiptera: Liviidae), has emerged as Abstract Athe most important exotic insect pest of citrus in California. Damage is two-fold. First, psyllids cause In California, Asian citrus psyllid vectors the bacterium Candidatus direct injury to citrus through feeding on phloem juice Liberibacter asiaticus, which causes the lethal citrus disease in immature foliage, deforming the leaves (Halbert and huanglongbing. The top priority for California’s citrus industry has been Manjunath 2004); and second, and more importantly, to diminish the rate of bacterium spread by reducing Asian citrus psyllid they vector the bacterium Candidatus Liberibacter asi- populations in urban areas, where this pest primarily resides. Attempts aticus (CLas), which causes the lethal and untreatable at eradicating and containing the psyllid with insecticides were citrus disease, huanglongbing (HLB), also called citrus unsuccessful. An alternative approach has been a classical biological greening disease. control program using two parasitoids from Pakistan, Tamarixia radiata Characteristic symptoms associated with CLas in- and Diaphorencyrtus aligarhensis, which attack the psyllid nymphs. fection are reduced vigor, foliar discoloration and die- T. radiata has established widely and, in combination with generalist back, misshapen fruit with bitter juice and malformed predators, natural enemies are providing substantial control of psyllids seeds, premature fruit drop, overall yield reductions in urban areas. and, ultimately, tree death (Gottwald 2010). -
Workflows for Rapid Functional Annotation of Diverse
insects Article Workflows for Rapid Functional Annotation of Diverse Arthropod Genomes Surya Saha 1,2 , Amanda M. Cooksey 2,3, Anna K. Childers 4 , Monica F. Poelchau 5 and Fiona M. McCarthy 2,* 1 Boyce Thompson Institute, 533 Tower Rd., Ithaca, NY 14853, USA; [email protected] 2 School of Animal and Comparative Biomedical Sciences, University of Arizona, 1117 E. Lowell St., Tucson, AZ 85721, USA; [email protected] 3 CyVerse, BioScience Research Laboratories, University of Arizona, 1230 N. Cherry Ave., Tucson, AZ 85721, USA 4 Bee Research Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, USDA, 10300 Baltimore Ave., Beltsville, MD 20705, USA; [email protected] 5 National Agricultural Library, Agricultural Research Service, USDA, 10301 Baltimore Ave., Beltsville, MD 20705, USA; [email protected] * Correspondence: fi[email protected] Simple Summary: Genomic technologies are accumulating information about genes faster than ever before, and sequencing initiatives, such as the Earth BioGenome Project, i5k, and Ag100Pest Initiative, are expected to increase this rate of acquisition. However, if genomic sequencing is to be used for the improvement of human health, agriculture, and our understanding of biological systems, it is necessary to identify genes and understand how they contribute to biological outcomes. While there are several well-established workflows for assembling genomic sequences and identifying genes, understanding gene function is essential to create actionable knowledge. Moreover, this functional annotation process must be easily accessible and provide information at a genomic scale to keep up Citation: Saha, S.; Cooksey, A.M.; with new sequence data. We report a well-defined workflow for rapid functional annotation of whole Childers, A.K.; Poelchau, M.F.; proteomes to produce Gene Ontology and pathways information. -
Inventory and Review of Quantitative Models for Spread of Plant Pests for Use in Pest Risk Assessment for the EU Territory1
EFSA supporting publication 2015:EN-795 EXTERNAL SCIENTIFIC REPORT Inventory and review of quantitative models for spread of plant pests for use in pest risk assessment for the EU territory1 NERC Centre for Ecology and Hydrology 2 Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford, OX10 8BB, UK ABSTRACT This report considers the prospects for increasing the use of quantitative models for plant pest spread and dispersal in EFSA Plant Health risk assessments. The agreed major aims were to provide an overview of current modelling approaches and their strengths and weaknesses for risk assessment, and to develop and test a system for risk assessors to select appropriate models for application. First, we conducted an extensive literature review, based on protocols developed for systematic reviews. The review located 468 models for plant pest spread and dispersal and these were entered into a searchable and secure Electronic Model Inventory database. A cluster analysis on how these models were formulated allowed us to identify eight distinct major modelling strategies that were differentiated by the types of pests they were used for and the ways in which they were parameterised and analysed. These strategies varied in their strengths and weaknesses, meaning that no single approach was the most useful for all elements of risk assessment. Therefore we developed a Decision Support Scheme (DSS) to guide model selection. The DSS identifies the most appropriate strategies by weighing up the goals of risk assessment and constraints imposed by lack of data or expertise. Searching and filtering the Electronic Model Inventory then allows the assessor to locate specific models within those strategies that can be applied. -
Current Statewide Updates Regarding the Battle of the Asian Citrus Psyllid and Huanglongbing
FARM ADVISORS Current Statewide Updates Regarding the Battle of the Asian Citrus Psyllid and Huanglongbing Figure 1. $QRUJDQLFFLWUXVJURYH located in Southern California, 5LYHUVLGH&RXQW\,PDJHE\6RQLD5LRV 6RQLD5LRV8QLYHUVLW\RI&DOLIRUQLD&RRSHUDWLYH([WHQVLRQ5LYHUVLGH6DQ'LHJR&R 5REHUW.UXHJHU86'$$561DWLRQDO&ORQDO*HUPSODVP5HSRVLWRU\IRU&LWUXV 'DWHV Introduction and Background the Middle East, whereas C L asiaticus is associated with ommercially grown citrus employs more than HLB in Asia and the New World. C L asiaticus is vectored 22,000 individuals in California on about 3,900 by the Asian citrus psyllid (ACP) (Diaphorina citri), while C Cfarms statewide (Fig. 1). The incurable and fatal L africanus is vectored by different psyllid species,Trioza plant disease Huanglongbing (HLB), also known as citrus erytreae. Both psyllids can transmit both C L spp under greening disease, threatens this $3.3 billion industry experimental conditions; the association of vector and (CPDPP 2017). Huanglongbing affects all citrus plants, pathogen is due to geographic occurrence. Since C L including orange, lemon, lime, mandarin, pummelo, asiaticus and D citri occur in the United States, the emphasis kumquat, grapefruit and tangerine trees. It also affects in the remainder of this article will be on these species. some relatives of citrus in the family Rutaceae, some of This tiny, mottled brown Asian citrus psyllid (ACP) which are occasionally grown as ornamentals. HLB is fatal is a sap-sucking, hemipteran bug from the Psyllidae for citrus trees and once a tree is infected, it will decline in family, that when it feeds injects a salivary toxin that stops health and eventually die. elongation and causes malformation of leaves and shoots Bacteria in the candidate genus Candidatus (Michaud 2004). -
Tamarixia Radiata (Hymenoptera: Eulophidae) 3 Diaphorina Citri (Hemiptera: Liviidae): Mass Rearing and Potential Use of the Parasitoid in Brazil
Journal of Integrated Pest Management (2016) 7(1): 5; 1–11 doi: 10.1093/jipm/pmw003 Profile Tamarixia radiata (Hymenoptera: Eulophidae) 3 Diaphorina citri (Hemiptera: Liviidae): Mass Rearing and Potential Use of the Parasitoid in Brazil Jose´Roberto Postali Parra, Gustavo Rodrigues Alves, Alexandre Jose´Ferreira Diniz,1 and Jaci Mendes Vieira Departamento de Entomologia e Acarologia, Escola Superior de Agricultura Luiz de Queiroz, Universidade de Sa˜o Paulo, Av. Padua Dias, 11, Piracicaba, Sa˜o Paulo, Brazil ([email protected]; [email protected]; [email protected]; [email protected]), and 1Corresponding author, e-mail: [email protected] Received 3 July 2015; Accepted 15 January 2016 Downloaded from Abstract Huanglongbing (HLB) is the most serious disease affecting citriculture worldwide. Its vector in the main produc- ing regions is the Asian citrus psyllid, Diaphorina citri Kuwayama, 1908 (Hemiptera: Liviidae). Brazil has the larg- est orange-growing area and is also the largest exporter of processed juice in the world. Since the first detection http://jipm.oxfordjournals.org/ of the disease in this country, >38 million plants have been destroyed and pesticide consumption has increased considerably. During early research on control methods, the parasitoid Tamarixia radiata (Waterston, 1922) (Hymenoptera: Eulophidae) was found in Brazil. Subsequent studies focused on its bio-ecological aspects and distribution in citrus-producing regions. Based on successful preliminary results for biological control with T. radiata in small areas, mass rearing was initiated for mass releases in Brazilian conditions. Here, we review the Brazilian experience using T. radiata in D. citri control, with releases at sites of HLB outbreaks, adjacent to commercial areas, in abandoned groves, areas with orange jessamine (a psyllid host), and backyards. -
Data Sheets on Quarantine Pests
EPPO quarantine pest Prepared by CABI and EPPO for the EU under Contract 90/399003 Data Sheets on Quarantine Pests Unaspis citri IDENTITY Name: Unaspis citri (Comstock) Synonyms: Chionaspis citri Comstock Prontaspis citri (Comstock) Dinaspis veitchi Green & Laing Taxonomic position: Insecta: Hemiptera: Homoptera: Diaspididae Common names: Citrus snow scale, white louse scale (English) Schneeweisse Citrusschildlaus (German) Cochinilla blanca, piojo bianco, escama de nieve de los cítricos (Spanish) Bayer computer code: UNASCI EPPO A1 list: No. 226 EU Annex designation: II/A1 HOSTS U. citri is polyphagous, attacking plant species belonging to 12 genera in 9 families. The main hosts of economic importance are Citrus spp., especially oranges (C. sinensis) but the insect has also been recorded on a wide range of other crops, mostly fruit crops and ornamentals, including Annona muricata, bananas (Musa paradisiaca), Capsicum, coconuts (Cocos nucifera), guavas (Psidium guajava), Hibiscus, jackfruits (Artocarpus heterophyllus), kumquats (Fortunella), pineapples (Ananas comosus), Poncirus trifoliata and Tillandsia usneoides. The main potential hosts in the EPPO region are Citrus spp. growing in the southern part of the region, around the Mediterranean. GEOGRAPHICAL DISTRIBUTION U. citri originated in Asia and has spread widely in tropical and subtropical regions. EPPO region: A closely related species, the arrowhead scale (Unaspis yanonensis (Kuwana)), also a pest of citrus, has recently been introduced into France and possibly into Italy (EPPO/CABI, 1996). Specimens of U. citri were collected in Portugal (Azores) in the 1920s, but there have been no records since; there is no suggestion that the pest is established there now. There has recently been an isolated record in Malta. -
Coleoptera: Coccinellidae): Influence of Subelytral Ultrastructure
Experimental & Applied Acarology, 23 (1999) 97–118 Review Phoresy by Hemisarcoptes (Acari: Hemisarcoptidae) on Chilocorus (Coleoptera: Coccinellidae): influence of subelytral ultrastructure M.A. Houck* Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409–3131, USA (Received 9 January 1997; accepted 17 April 1998) ABSTRACT The non-phoretic stages of mites of the genus Hemisarcoptes are predators of the family Diaspididae. The heteromorphic deutonymph (hypopus) maintains a stenoxenic relationship with beetles of the genus Chilocorus. The mites attach to the subelytral surface of the beetle elytron during transport. There is variation in mite density among species of Chilocorus. Both Hemisarcoptes and Chilocorus have been applied to biological control programmes around the world. The objective of this study was to determine whether subelytral ultrastructure (spine density) plays a role in the evolution of symbiosis between the mite and the beetle. The subelytral surfaces of 19 species of Chilocorus and 16 species of Exochomus were examined. Spine density was determined for five subelytral zones: the anterior pronotal margin, medial central region, caudoventral tip, lateral distal margin and epipleural region. Spine density on the subelytral surface of Chilocorus and Exochomus was inversely correlated with the size of the elytron for all zones except the caudoventral tip. This suggests that an increase in body size resulted in a redistribution of spines and not an addition of spines. The pattern of spine density in Exochomus and Chilocorus follows a single size–density trajectory. The pattern of subelytral ultrastructure is not strictly consistent with either beetle phylogeny or beetle allometry. The absence of spines is not correlated with either beetle genus or size and species of either Chilocorus or Exochomus may be devoid of spines in any zone, irrespective of body size. -
The Biology and Ecology of Armored Scales
Copyright 1975. All rights resenetl THE BIOLOGY AND ECOLOGY +6080 OF ARMORED SCALES 1,2 John W. Beardsley Jr. and Roberto H. Gonzalez Department of Entomology, University of Hawaii. Honolulu. Hawaii 96822 and Plant Production and Protection Division. Food and Agriculture Organization. Rome. Italy The armored scales (Family Diaspididae) constitute one of the most successful groups of plant-parasitic arthropods and include some of the most damaging and refractory pests of perennial crops and ornamentals. The Diaspididae is the largest and most specialized of the dozen or so currently recognized families which compose the superfamily Coccoidea. A recent world catalog (19) lists 338 valid genera and approximately 1700 species of armored scales. Although the diaspidids have been more intensively studied than any other group of coccids, probably no more than half of the existing forms have been recognized and named. Armored scales occur virtually everywhere perennial vascular plants are found, although a few of the most isolated oceanic islands (e.g. the Hawaiian group) apparently have no endemic representatives and are populated entirely by recent adventives. In general. the greatest numbers and diversity of genera and species occur in the tropics. subtropics. and warmer portions of the temperate zones. With the exclusion of the so-called palm scales (Phoenicococcus. Halimococcus. and their allies) which most coccid taxonomists now place elsewhere (19. 26. 99). the armored scale insects are a biologically and morphologically distinct and Access provided by CNRS-Multi-Site on 03/25/16. For personal use only. Annu. Rev. Entomol. 1975.20:47-73. Downloaded from www.annualreviews.org homogenous group.