Managing fertility with animal waste to promote arthropod pest suppression
Publication date: Available online 19 April 2019Source: Biological ControlAuthor(s): Elizabeth Rowen, John Tooker, Carmen BlubaughAbstractFertility management is key to maintaining soil quality in crop systems and can have important implications for plant growth and insect pest populations. Organic fertility amendments, particularly animal manures, are hypothesized to simultaneously promote plant vigor, herbivore resistance, and top-down pest suppression. Animal-waste fertilizers influence pest control in at least two ways: first, they can affect prey suppression from the bottom up by changing macro- and micronutrient conc...
Source: Biological Control - April 20, 2019 Category: Biology Source Type: research

Taxonomy of registered Bacillus spp. strains used as plant pathogen antagonists
This study should help establish a link between the research literature and product labels, which should lead to improved knowledge and regulatory actions. (Source: Biological Control)
Source: Biological Control - April 17, 2019 Category: Biology Source Type: research

Evaluating host location in three native Sclerodermus species and their ability to cause mortality in the wood borer Aromia bungii (Coleoptera: Cerambycidae) in laboratory
In this study we evaluated the olfactory responses and parasitism rates of three Sclerodermus species against A. bungii when reared on the substitute host, Tenebrio molitor (Coleoptera: Tenebrionidae). In Y-tube olfactometer studies, the odor of frass from the larvae of A. bungii was highly attractive to S. guani adults, but not to S. sichuanensis or S. pupariae adults. When reared on A. bungii larvae (rather than T. molitor) for one generation, S. sichuanensis adults were also attracted to the odor of frass from A. bungii larvae. This indicates that learning plays an important and positive role in successful host location...
Source: Biological Control - April 16, 2019 Category: Biology Source Type: research

Effects of chilling on diapause development and reproductive fitness of two congeneric species of encyrtid parasitoids (Hymenoptera: Encyrtidae) of the emerald ash borer
Publication date: Available online 16 April 2019Source: Biological ControlAuthor(s): Jian J. Duan, Kristi M. LarsonAbstractOobius agrili Zhang and Huang and Oobius primorskyensis Yao and Duan (Hymenoptera: Encyrtidae) are egg parasitoids of the emerald ash borer (EAB) Agrilus planipennis (Coleoptera: Buprestidae). Oobius agrili has been introduced for EAB biocontrol and has established populations in several areas of the U.S., whereas O. primorskyensis is currently under evaluation for future biocontrol introduction. Both species overwinter as diapausing larvae inside parasitized host eggs; however, few studies have determ...
Source: Biological Control - April 16, 2019 Category: Biology Source Type: research

Effects of the combination of Baobab (Adansonia digitata L.) and Sporidiobolus pararoseus Y16 on blue mold of apples caused by Penicillium expansum
Publication date: Available online 16 April 2019Source: Biological ControlAuthor(s): Mandour H. Abdelhai, Haroon Elrasheid Osman Jebreel Tahir, Qiru Zhang, Qiya Yang, Joseph Ahima, Xiaoyun Zhang, Hongyin ZhangAbstractThe utilization of natural compounds to preserve fruit quality and extend the shelf life has gained great interest worldwide. African Baobab (AB) fruit (Adansonia digitata L.) produces some of these natural compounds, which contain several bioactive antioxidants with ascorbic acid being the major component. Sporidiobolus pararoseus Y16 combined with African Baobab extract (100 mg/ml) significantly inhibited th...
Source: Biological Control - April 16, 2019 Category: Biology Source Type: research

Analysis of traits for biocontrol performance of Pseudomonas parafulva JBCS1880 against bacterial pustule in soybean plants
In this study, to dissect the contribution of various traits to the biocontrol performance of a bacterial BCA, we performed genetic screening using a random transposon (Tn) mutant collection constructed from Pseudomonas parafulva JBCS1880 that shows strong antagonism against Xanthomonas axonopodis pv. glycines and Burkholderia glumae. Suppression of antibacterial activity by Tn insertion reduced the biocontrol performance of the strain. The disruption of viscosin-like lipopeptide, which is predicted to have D-Ser at the second position (called VILS2 hereafter), significantly suppressed not only antagonism, but also swarmin...
Source: Biological Control - April 14, 2019 Category: Biology Source Type: research

iTRAQ-based quantitative proteomic analysis of mycelium in different predation periods in nematode trapping fungus Duddingtonia flagrans
Publication date: Available online 13 April 2019Source: Biological ControlAuthor(s): Meng Liang, Shan Du, Wenjun Dong, Jiangtao Fu, Zehao Li, Yidan Qiao, Xiangji Yin, Fugui Nie, Xiaoye Yang, Rui WangAbstractDuddingtonia flagrans, as a representative species of nematode-trapping fungi, has a strong environmental tolerance and nematode-trapping ability and is thought of as the most promising candidate for use as a biological agent. To clarify the proteomic differences during different predation periods and to explore the molecular background of the nematode-trapping mechanism, we carried out an iTRAQ (isobaric tags for relat...
Source: Biological Control - April 14, 2019 Category: Biology Source Type: research

Scrutinizing biological control survey data from the native range – the phylogeny and Lygodium fern host associations of Musotiminae moths
Publication date: Available online 13 April 2019Source: Biological ControlAuthor(s): Graham A. McCulloch, Jeffrey R. Makinson, Ryan Zonneveld, Matthew F. Purcell, Dean R. Brookes, Komal Gurdasani, Ellen C. Lake, S. Raghu, Gimme H. WalterAbstractLygodium microphyllum is considered one of the most damaging environmental weeds in Florida. Despite substantial efforts to control this fern, it continues to spread rapidly through the Greater Everglades ecosystem and other regions of Florida. Biological control is considered a critical component of the management strategy to control this weed, and foreign exploration for natural e...
Source: Biological Control - April 13, 2019 Category: Biology Source Type: research

Biological control of pestiferous slugs using Tetanocera elata (Fabricius) (Diptera: Sciomyzidae): Larval behavior and feeding on slugs exposed to Phasmarhabditis hermaphrodita (Schneider, 1859)
In this study, survival of larvae fed from the neonate stage on Deroceras reticulatum Müller (a previously known prey species) was significantly greater (P = 0.023) than for larvae fed on Deroceras invadens Reise with 100% and 40% survival respectively. However, when fed solely on D. reticulatum which were previously exposed to P. hermaphrodita, only 20% of neonate larvae pupariated successfully. Ninety percent of neonate larvae maintained without food for the first four days and subsequently fed on D. reticulatum pupariated successfully although this decreased to below 50% for ≥ 6 days without food. Predatory thir...
Source: Biological Control - April 10, 2019 Category: Biology Source Type: research

Editorial Board
Publication date: June 2019Source: Biological Control, Volume 133Author(s): (Source: Biological Control)
Source: Biological Control - April 10, 2019 Category: Biology Source Type: research

Effect of different feeding sources on lifespan and fecundity in the biocontrol agent Torymus sinensis
Publication date: Available online 9 April 2019Source: Biological ControlAuthor(s): L. Picciau, A. Alma, C. FerraciniAbstractTorymus sinensis Kamijo (Hymenoptera, Torymidae) is a biocontrol agent released to control outbreaks of the Asian chestnut gall wasp, Dryocosmus kuriphilus Yasumatsu (Hymenoptera, Cynipidae). This wasp is mass reared in controlled conditions in order to be released on a large scale in chestnut orchards and coppices, thus factors such as food quality may deeply influence the effectiveness of parasitoids. To identify different diets that could be used to increase mass rearing, performance, longevity an...
Source: Biological Control - April 10, 2019 Category: Biology Source Type: research

Lethal and sublethal impact of sulfoxaflor on three species of Trichogramma parasitoid wasps (Hymenoptera: Trichogrammatidae)
In this study, we explored the impacts of sulfoxaflor on Trichogramma dendrolimi, Trichogramma ostriniae and Trichogramma confusum under lethal and sublethal-concentration exposure in laboratory. The acute toxicity test indicated that sulfoxaflor possesses high toxicity to T. dendrolimi, T. ostriniae and T. confusum with LC50s of 0.12, 0.24 and 0.32 mg a.i. L-1, respectively. Parasitism of the three Trichogramma spp. were significantly impaired when the host eggs were exposed to low lethal concentrations of sulfoxaflor. The adult emergence rates of the subsequent generation of T. dendrolimi were compromised in all treatmen...
Source: Biological Control - April 5, 2019 Category: Biology Source Type: research

Microcapsuled entomopathogenic fungus against fire ants, Solenopsis invicta
Publication date: Available online 29 March 2019Source: Biological ControlAuthor(s): Hua-Long Qiu, Eduardo G.P. Fox, Chang-Sheng Qin, Dan-Yang Zhao, Hua Yang, Jin-Zhu XuAbstractA new microencapsulation method of Metarhizium anisopliae based on gelatin (GE) and gum arabic (GA) is presented. The conditions to produce 35-50 µm spheres relied on 1% wall material, GE:GA ratio 1:1−1:2, core:wall ratio 1:1, under pH 4.0, 35−50℃ and 500−700 r/min agitation. Microcapsulation provided protection against UV and longer shelf life as compared to non-encapsulated conidia. The obtained preparation proved active ...
Source: Biological Control - March 31, 2019 Category: Biology Source Type: research

Biocontrol of postharvest Alternaria decay in table grapes from Argentina
Publication date: Available online 29 March 2019Source: Biological ControlAuthor(s): A.F. Stocco, M.E. Diaz, M.C. Rodríguez Romera, L.A. Mercado, M.L. Rivero, M.L. PonsoneAbstractPostharvest diseases cause considerable losses of fruit during transportation and storage. Synthetic fungicides are primarily used to control them; however, the recent trend is to shif toward safer and more eco-friendly alternatives for the control of postharvest decays. In Argentina, Alternaria genus was cited as a postharvest pathogen in table grapes for the first time during 2010-2012 seasons. The aim of this study was to identify by mor...
Source: Biological Control - March 31, 2019 Category: Biology Source Type: research

Comparative analysis of different biotic and abiotic agents for growth promotion in rice (Oryza sativa L.) and their effect on induction of resistance against Rhizoctonia solani: A soil borne pathogen
Publication date: Available online 28 March 2019Source: Biological ControlAuthor(s): Shasmita, Harekrushna Swain, Soumendra K. Naik, Arup K. MukherjeeAbstractSheath blight is caused by soil borne fungal pathogen Rhizoctonia solani, resulting in up to 50% reduction of rice grain yield. Several broad-spectrum fungicides have been used to control this disease, however, these methods are costly to implement practically and have led to fungicide resistance. A sustainable approach like the use of biocontrol agents, is needed for the management of this disease. In the present experiment, we have compared three Bacillus spp. with ...
Source: Biological Control - March 30, 2019 Category: Biology Source Type: research

Sourcing effective biological control agents of conical snails, Cochlicella acuta, in Europe and north Africa for release in southern Australia
Publication date: Available online 29 March 2019Source: Biological ControlAuthor(s): Mireille Jourdan, Thierry Thomann, Darren J. Kriticos, Marie-Claude Bon, Andy Sheppard, Geoff H. BakerAbstractThe conical snail, Cochlicella acuta, is a major introduced pest of grain crops in southern Australia. In particular, C. acuta aestivates on the heads and upper stalks of crop plants thus fouling grain harvests in late spring - early summer. Previous attempts to control this snail pest included the release, during the early 2000s, of parasitic flies (Sarcophaga villeneuveana) sourced from southern France, within the perceived nativ...
Source: Biological Control - March 30, 2019 Category: Biology Source Type: research

Percent infestation and seed consumption of Centaurea solstitialis L. (Asteracea: Cardueae) by Eustenopus villosus and Larinus curtus (Coleoptera: Curculionidae) in Washington, USA
Publication date: Available online 27 March 2019Source: Biological ControlAuthor(s): Steven E. Woodley, Benjamin A. Zamora, Todd CoffeyAbstractA 2-year field study (2014-2015) was conducted to determine the levels of Eustenopus villosus (Boheman) and Larinus curtus (Hochhut) infestation and seed consumption of the invasive plant Centaurea solstitialis L. (Asteraceae: Cardueae) in the steppe of southeastern Washington, USA, a marine-modified continental macroclimate. Mature terminal C. solstitialis flowerheads were collected and dissected to determine abundance of each weevil species and level of seed consumption by both sp...
Source: Biological Control - March 28, 2019 Category: Biology Source Type: research

Behavioural Responses of the Parasitoid Aphytis melinus to Volatiles Organic Compounds (VOCs) from Aonidiella aurantii on its host fruit Tahitian Lime Fruit Citrus latifolia
Publication date: Available online 27 March 2019Source: Biological ControlAuthor(s): Khalid Mohammed, Manjree Agarwal, James Newman, YongLin RenAbstractAphytis melinus DeBach (Hymenoptera: Aphelinidae) is a parasitoid of Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae). However, the cues used by A. melinus for host location have not been extensively investigated. Many studies have shown that mating parasitoids are strongly attracted by specific volatiles from infested plants. This paper investigated the response of A. melinus to volatiles from Tahitian lime fruit infested with A. aurantii through two-choice olfa...
Source: Biological Control - March 28, 2019 Category: Biology Source Type: research

Parasitoid wasps regulate population growth of fungus gnats genus Neoempheria Osten Sacken (Diptera: Mycetophilidae) in shiitake mushroom cultivation
Publication date: Available online 26 March 2019Source: Biological ControlAuthor(s): Hiromi Mukai, Hiroshi KitajimaAbstractThe fungus gnats genus Neoempheria Osten Sacken (Diptera: Mycetophilidae) are pests of the edible shiitake mushroom, Lentinula edodes (Berk.) Sing. (Agaricales: Omphalotaceae). In mushroom cultivation, there is a need to establish sustainable approaches with low environmental impact for insect pest control. Such practices should integrate cultural, chemical, and biological strategies. We investigated the ability of hymenopteran parasitoids to control population growth of fungus gnats during the growing...
Source: Biological Control - March 27, 2019 Category: Biology Source Type: research

Evaluation of Bacillus velezensis NKG-2 for Bio-control Activities Against Fungal Diseases and Potential Plant Growth
This study investigated the antifungal metabolites of Bacillus velezensis NKG-2, a bacterium isolated from the Qilian Mountains in China’s Qinghai Province. Experimental results showed this bacterium exhibited antagonistic activity against major plant fungal pathogens, namely Fusarium oxysporum, Fusarium graminearum, Botrytis cinerea, Alternaria alternata, Fulvia fulva, and Ustilaginoidea virens. In addition, the volatile organic compounds (VOCs) produced by Bacillus velezensis NKG-2 adversely affected the growth of these fungi. We also found that B. velezensis NKG-2 produced chitinase, cellulase, β-glucanase, a...
Source: Biological Control - March 27, 2019 Category: Biology Source Type: research

Marker assisted detection and LC-MS analysis of antimicrobial compounds in different Bacillus strains and their antifungal effect on Sclerotinia sclerotiorum
Publication date: Available online 16 March 2019Source: Biological ControlAuthor(s): Ayaz Farzand, Anam Moosa, Muhammad Zubair, Abdur Rashid Khan, Alvina Hanif, Hafiz Abdul Samad Tahir, Xuewen GaoAbstractBacillus strains are well studied for antagonistic effect against fungal pathogens, but the selection of potential antifungal strains is laborious and time-consuming process. Newly developed genetic markers and LC-MS based detection was undertaken simultaneously to detect eight antimicrobial compounds viz., surfactin, bacillomycin, iturin, fengycin/plipastatin, bacilysin, bacillaene, bacillibactin and plantazolicin in fort...
Source: Biological Control - March 17, 2019 Category: Biology Source Type: research

Field Evaluation of Insecticides and Application Timing on Natural Enemies of Selected Armored and Soft Scales
This study was conducted on trees that were naturally infested with either the soft scale, calico scale Eulecanium cerasorum (Cockerell) or armored scales, striped pine scale Toumeyella pini (King) and pine needle scale Chionaspis pinifoliae (Fitch). Insecticides were applied to target the most susceptible life stages of each scale insect. We found that patterns of the seasonal abundance of natural enemies were synchronized with the life history of each scale insect and took the shape of a rising and falling wave. Overall, impacts of insecticides on parasitoids and predators were influenced by the timing of their applicati...
Source: Biological Control - March 16, 2019 Category: Biology Source Type: research

Effects of releasing two Diachasmimorpha longicaudata population lines for the control of Ceratitis capitata infesting three key host fruit species
This study provides information on the capability of two population lines of the parasitoid Diachasmimorpha longicaudata to control medfly infesting the fruits of peach, as well as sour and sweet orange. One parasitoid line comes from non-irradiated larvae of wild medfly. The other comes from irradiated larvae of the Temperature Sensitive Lethal Vienna-8 medfly strain. The parasitoid host-finding ability in each aforementioned fruit species, the effectiveness of females to kill medfly larvae, the fruit height level preference for parasitoid foraging activity, and the influence of environmental conditions on parasitoid perf...
Source: Biological Control - March 15, 2019 Category: Biology Source Type: research

Food deprivation increases reproductive effort in a parasitoid wasp
Publication date: Available online 14 March 2019Source: Biological ControlAuthor(s): Shun-ichiro Takano, Keiji TakasuAbstractLife history theory predicts that animals should increase their current reproductive effort as the probability of survival to the next reproductive opportunity decreases. We studied the effects of food depletion on life history and oviposition behavior in the egg parasitoid Paratelenomus saccharalis (Hymenoptera: Platygastridae) to determine if the parasitoid alters its reproductive strategy based on life expectancy. We first examined survivorship and reproductive effort of females provided only with...
Source: Biological Control - March 15, 2019 Category: Biology Source Type: research

Extract of Xanthomonas axonopodis induces resistance in Solanum tuberosum against Pectobacterium atrosepticum
Publication date: Available online 14 March 2019Source: Biological ControlAuthor(s): Giulia Ramos Faillace, Eliane Romanato Santarém, Leandro Vieira AstaritaAbstractPotato (Solanum tuberosum) is affected by many pathogens, such as the necrotrophic bacterium Pectobacterium atrosepticum (Pba), resulting in substantial economic losses. The induction of natural disease resistance in crops using biological and chemical elicitors has received increasing attention in recent years, due to the low environmental toxicity of this method of disease management. We evaluated the ability of the autoclaved suspension of Xanthomonas...
Source: Biological Control - March 15, 2019 Category: Biology Source Type: research

Laboratory tests to estimate the non-target impacts of four Aphidius spp. parasitoids in the field
Publication date: Available online 12 March 2019Source: Biological ControlAuthor(s): Quentin Paynter, David TeulonAbstractA ‘risk score’ approach to help determine the potential impact of biological control agents on non-target species, previously proposed for weed biocontrol agents, was examined in an ex post study for insect biocontrol agents. ‘Risk scores’ (% parasitism for non-target aphid species/% parasitism for target aphid species) were calculated for 19 aphid (New Zealand adventive and indigenous) species and 4 introduced (New Zealand) Aphidius biocontrol species, based on previously publis...
Source: Biological Control - March 13, 2019 Category: Biology Source Type: research

Seed treatment containing Bacillus subtilis BY-2 in combination with other Bacillus isolates for control of Sclerotinia sclerotiorum on oilseed rape
Publication date: Available online 13 March 2019Source: Biological ControlAuthor(s): Xiaojia Hu, Daniel P. Roberts, Lihua Xie, Lu Qin, Yinshui Li, Xiangsheng Liao, Peipei Han, Changbing Yu, Xing LiaoAbstractBiological control treatments for soil-borne plant pathogens must provide enhanced levels of disease suppression and consistency of control over diverse soils before they enjoy wide-spread use. Bacillus megaterium A6 and two genetically distinct B. subtilis isolates, BY-2 and Tu-100, were applied individually and in combinations as seed treatments and tested in field trials conducted at four locations with different soi...
Source: Biological Control - March 13, 2019 Category: Biology Source Type: research

Population dynamics of the Diamondback Moth and its parasitoids in Zimbabwe
Publication date: Available online 13 March 2019Source: Biological ControlAuthor(s): Rudo Sithole, Casper Nyamukondiwa, Peter Chinwada, Bernhard LohrAbstractTemporal population dynamics of the diamondback moth (DBM), Plutella xylostella (L.) and its parasitoids were studied for a continuous 13- months period at two sites in Zimbabwe, vis Henderson and Mutoko. Our results showed that mean DBM numbers of 2.2 and 2.9 per plant for Henderson and Mutoko, respectively were not significantly different (p = 0.12). At Henderson, the DBM numbers achieved a pre-winter peak in February and a post-winter peak in October, while at Mutok...
Source: Biological Control - March 13, 2019 Category: Biology Source Type: research

Editorial Board
Publication date: May 2019Source: Biological Control, Volume 132Author(s): (Source: Biological Control)
Source: Biological Control - March 13, 2019 Category: Biology Source Type: research

First record of the spatio-temporal variation of Plutella xylostella (Lepidoptera: Plutellidae) and its parasitoids complex in the horticultural area of Córdoba city in central Argentina
Publication date: June 2019Source: Biological Control, Volume 133Author(s): Rosita Espinoza-Gavilanez, Mariano P. GrilliAbstractThe diamondback moth, Plutella xylostella (L.) (Plutellidae: Yponomeutoidea) is the most destructive pest in Brassicaceae crops worldwide. This paper describes the status of P. xylostella and its natural enemies in a wide area around Córdoba city in the central region of Argentina. Samples were collected from fifteen horticultural plots near Córdoba City. In each plot, larvae and pupae were obtained from 10 cabbage plants during the spring of 2016 and 2017. Immature specimens were ke...
Source: Biological Control - March 8, 2019 Category: Biology Source Type: research

Efficacy of arbuscular mycorrhizal fungi and endophytic strain Epicoccum nigrum ASU11 as biocontrol agents against blackleg disease of potato caused by bacterial strain Pectobacterium carotovora subsp. atrosepticum PHY7
Publication date: Available online 4 March 2019Source: Biological ControlAuthor(s): Hadeel M.M Khalil Bagy, Elhagag Ahmed Hassan, Nivien Allam Nafady, Mona F.A. DawoodAbstractThis work was aimed to evaluate the efficacy of arbuscular mycorrhizal fungi (AMF) and the endophytic fungal strain Epicoccum nigrum ASU11 (Epi) to control potato blackleg caused by bacterial stain Pectobacterium carotovora subsp. atrosepticum PHY7 (Pca). E. nigrum showed unique colonization frequency properties of potato plants (73.3 % colonization frequency). Furthermore, the endophytic fungus exhibited antagonistic capability against pathogenic bac...
Source: Biological Control - March 5, 2019 Category: Biology Source Type: research

Screening of locally available organic materials as substrates for production of Pochonia chlamydosporia in Kenya
Publication date: Available online 2 March 2019Source: Biological ControlAuthor(s): Nessie D. Luambano, Rosa H. Manzanilla-López, Stephen J. Powers, Waceke J. Wanjohi, John W. Kimenju, Rama D. NarlaAbstractPochonia chlamydosporia is a nematophagous fungus with high potential for the biological control of root-knot nematodes (Meloidogyne spp.). The fungus is commonly produced in colonised rice substrate, but non-staple and more affordable substrates may encourage the production and use of this biological control agent. An in vitro study was conducted to screen different organic materials, including green and animal m...
Source: Biological Control - March 4, 2019 Category: Biology Source Type: research

Effects of photoperiod and light intensity on wing dimorphism and development in the parasitoid Sclerodermus pupariae (Hymenoptera: Bethylidae)
Publication date: Available online 4 March 2019Source: Biological ControlAuthor(s): Shuai Hu, Xiao-Yi Wang, Zhong-Qi Yang, Jian J. DuanAbstractSclerodermus pupariae Yang et Yao (Hymenoptera: Bethylidae), a newly described ectoparasitoid, has been used as a biocontrol agent against several buprestid and cerambycid pests in China. Both winged and wingless female morphs of S. pupariae can find and parasitize hosts; however, winged parasitoids can disperse faster and further to new habitats and thus are more adapted to spatial and temporal changes in host densities than wingless morphs. In the present study, we determined the ...
Source: Biological Control - March 4, 2019 Category: Biology Source Type: research

Screening and Identification of an Antagonistic Yeast Controlling Postharvest Blue Mold Decay of Pears and the Possible Mechanisms Involved
Publication date: Available online 4 March 2019Source: Biological ControlAuthor(s): Qiru Zhang, Lina Zhao, Zongbi Li, Chao Li, Bo Li, Xiangyu Gu, Xiaoyun Zhang, Hongyin ZhangAbstractPostharvest disease of pears caused by pathogens results in great economic losses. The aim of this research was to isolate a strain of potential antagonistic yeast from soil of orchards, and to test the control efficacy against postharvest blue mold decay of pears. By molecular biological identification based on comparative sequence analysis of 5.8S rDNA gene, the antagonistic strain was identified as Wickerhamomyces anomalus. The results showe...
Source: Biological Control - March 4, 2019 Category: Biology Source Type: research

The proportion of blue light affects Parasitoid wasp behavior in LED-extended photoperiod in greenhouses: increased parasitism and offspring sex ratio bias
Publication date: Available online 4 March 2019Source: Biological ControlAuthor(s): Précillia Cochard, Tigran Galstian, Conrad CloutierAbstractThe increasing use of specific wavelengths involving light-emitting diodes (LEDs) under greenhouses enables to overcome the lack of light during winter months, helping crops photosynthesis or vegetative growth. However, modification of the light environment as well as the photoperiod may also alter directly or indirectly the activity of both beneficial and pest insects that depend on plants. Here, we submitted the parasitic wasp Aphidius ervi and its main host the pea aphid, ...
Source: Biological Control - March 4, 2019 Category: Biology Source Type: research

Field Assessment of Microbial Inoculants to Control Rhizoctonia Root Rot on Wheat
Publication date: Available online 26 February 2019Source: Biological ControlAuthor(s): Stephen J. Barnett, Ross A. Ballard, Christopher M.M. FrancoAbstractRhizoctonia root rot caused by Rhizoctonia solani AG8 is a major disease in dryland cereal crops. Previous research identified a suite of microbes using in planta bioassay screening that are effective as seed-coated inoculants for control of Rhizoctonia root rot on wheat. This paper assessed 23 strains in fields in Australia with a history of naturally occurring R. solani AG8. Due to the patchy nature of Rhizoctonia root rot in the field, a 2-phase split-plot field tria...
Source: Biological Control - February 27, 2019 Category: Biology Source Type: research

Interactive effects of temperature and time on cold tolerance and spring predation in overwintering soil predatory mites (Gaeolaelaps aculeifer Canestrini)
Publication date: Available online 26 February 2019Source: Biological ControlAuthor(s): Kim Jensen, Jesper G. Sørensen, Martin HolmstrupAbstractSoil living mites have large potential as biocontrol agents against soil-dwelling pests, but little is known about their ecological and ecophysiological responses to cold. We investigated the interactive effects of acclimation temperature and time on cold tolerance in the laelapid mite Gaeolaelaps aculeifer Canestrini after exposure to 5, 10, 15, or 20 °C for 1, 4, or 8 days. Another group of mites were subjected to simulated winter by gradually lowering the temperature ...
Source: Biological Control - February 27, 2019 Category: Biology Source Type: research

The potential of Brassicaceae biofumigant crops to manage Pleiochaeta setosa in sustainable lupin cultivation
Publication date: Available online 26 February 2019Source: Biological ControlAuthor(s): Kevin Dewitte, Sofie Landschoot, Jasper Carrette, Kris Audenaert, Veerle Derycke, Joos Latré, Pieter Vermeir, Geert HaesaertAbstractLupin is prone to infection by Pleiochaeta setosa (Kirchn.) Hughes causing brown spot and root rot in Lupinus species. The control of these diseases is crucial to limit yield losses, but an increased public awareness and European legislative restrictions have resulted in a drastic reduction of allowed pesticides and many research groups invest in alternative biocontrol strategies. In the current stud...
Source: Biological Control - February 26, 2019 Category: Biology Source Type: research

Coccinellid host morphology dictates morphological diversity of the parasitoid wasp Dinocampus coccinellae
In this study we quantified the effect of six (4 native North American and 2 non-native North American) host species on the morphometrics of D. coccinellae. Adult lady beetles were collected from 13 locations in the United States and reared in the laboratory until D.coccinellae exited from their adult beetle hosts. Eighty-nine individual D. coccinellae females and their associated host were weighed and morphometric measurements were taken. The smallest lady beetle host Hippodamia parenthesis produced the smallest adult wasps; the largest host species, Coccinella septempunctata, produced the largest female wasps. A directio...
Source: Biological Control - February 26, 2019 Category: Biology Source Type: research

Modelling the distribution of forest pest natural enemies across invaded areas: towards understanding the influence of climate on parasitoid establishment success
Publication date: Available online 22 February 2019Source: Biological ControlAuthor(s): D. Fischbein, M.V. Lantschner, J.C. CorleyAbstractClassical biological control is a pest management practice frequently deployed against invasive insects. However, introduced natural enemies too often fail to establish, and this has been partly explained by climatic mismatching. We evaluate climate matching (using MaxEnt) for three parasitoids, Megarhyssa nortoni, Ibalia leucospoides and Rhyssa persuasoria, released in classical biological control programmes of the pine pest Sirex noctilio in the Southern Hemisphere and explore how clim...
Source: Biological Control - February 23, 2019 Category: Biology Source Type: research

First record of the spatio-temporal variation of Plutella xylostella and its parasitoids complex in central Argentina
Publication date: Available online 22 February 2019Source: Biological ControlAuthor(s): Rosita Espinoza Gavilanez, Mariano P. GrilliAbstractThe diamondback moth, Plutella xylostella (L.) (Plutellidae: Yponomeutoidea) is the most destructive pest in Brassicaceae crops worldwide. This paper describes the status of P. xylostella and its natural enemies in a wide area around Córdoba city in the central region of Argentina. Samples were collected from fifteen horticultural plots near Córdoba City. In each plot, larvae and pupae were obtained from 10 cabbage plants during the spring of 2016 and 2017. Immature speci...
Source: Biological Control - February 23, 2019 Category: Biology Source Type: research

Field evidence and grower perceptions on the roles of an omnivore, European earwig, in apple orchards
Publication date: Available online 22 February 2019Source: Biological ControlAuthor(s): Robert J. Orpet, Jessica R. Goldberger, David W. Crowder, Vincent P. JonesAbstractIn agroecosystems, omnivores can be beneficial predators or harmful herbivores. In apple orchards, the omnivorous European earwig (Forficula auricularia) is thought to be a key predator of woolly apple aphid (Eriosoma lanigerum), but has also been implicated in feeding on apple fruit. Assessing the effects of earwigs in orchards is difficult because they are nocturnal, and their damage to fruits can resemble other wounds. Apple orchardists thus may manage ...
Source: Biological Control - February 23, 2019 Category: Biology Source Type: research

Potential distribution of Bactrocera oleae and the parasitoids Fopius arisanus and Psyttalia concolor, aiming at classical biological control
Publication date: Available online 22 February 2019Source: Biological ControlAuthor(s): Fernanda Appel Müller, Naymã Pinto Dias, Marco Silva Gottschalk, Flávio Roberto Mello Garcia, Dori Edson NavaAbstractBactrocera oleae (Rossi, 1790) (Diptera: Tephritidae) is monophagous and one of the primary plagues of the olive tree (Olea europaea L. (Lamiales: Oleaceae)), causing economic losses worldwide. The pest has been detected in the United States and Mexico, showing potential to invade new areas. Among the parasitoids used to control B. oleae, Fopius arisanus (Sonan, 1932) and Psyttalia concolor (Szép...
Source: Biological Control - February 23, 2019 Category: Biology Source Type: research

Bacillus subtilis TE3: a promising biological control agent against Bipolaris sorokiniana, the causal agent of spot blotch in wheat (Triticum turgidum L. subsp. durum)
In conclusion, B. subtilis TE3 and its antifungal metabolites are promising effective treatment to control the causal agent of the wheat spot blotch.Graphical abstract (Source: Biological Control)
Source: Biological Control - February 22, 2019 Category: Biology Source Type: research

Elusive enemies: consumptive and ovipositional effects on mosquitoes by predatory midge larvae are enhanced in dyed environments
Publication date: Available online 18 February 2019Source: Biological ControlAuthor(s): Ross N. Cuthbert, Natali Ortiz-Perea, Jaimie T.A. Dick, Amanda CallaghanAbstractMosquito-borne disease incidences continue to proliferate and cause enormous mortality and debilitation rates. Predatory natural enemies can be effective in population management strategies targeting medically-important mosquito species. However, context-dependencies and target organism behavioural responses can impede or facilitate biological control agents. Black pond dye has been shown to be a strong mosquito oviposition attractant, and could potentially ...
Source: Biological Control - February 19, 2019 Category: Biology Source Type: research

An egg parasitoid interferes with biological control of tomato leafminer by augmentation of Nesidiocorus tenuis (Hemiptera: Miridae)
Publication date: Available online 18 February 2019Source: Biological ControlAuthor(s): Mohammad Ali Mirhosseini, Yaghoub Fathipour, Niels Holst, Mahmoud Soufbaf, J.P. MichaudAbstractTomato leaf miner (TLM), Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is a serious pest of tomato production in many parts of the world. The TLM has demonstrated capacity to evolve resistance to insecticides, and residues of these on tomato fruit pose hazards to human health, making biological control solutions an urgent priority. We assessed the biological control potential of the predatory bug Nesidiocoris tenuis (Reuter), in combinati...
Source: Biological Control - February 19, 2019 Category: Biology Source Type: research

Feeding Strategy And Prey Selectivity In Cnesterodon decemmaculatus And Jenynsia multidentata In Experimental Enclosures: Importance For The Biological Control Of Mosquito Populations
Publication date: Available online 18 February 2019Source: Biological ControlAuthor(s): A.F. Bonifacio, V.L. Usseglio, A.C. Hued, L. Aun, R. MartoriAbstractMosquitoes pose a threat to human and animal health due they act as vectors for numerous pathogens and parasites which cause disease. Several methods are used to control mosquito populations. Chemical pesticides can be harmful to human health and others lifeforms, including natural predators, and mosquitoes have been well documented to develop resistance through time. Alternative methods for mosquito control must be explored, being the biological control an effective an...
Source: Biological Control - February 19, 2019 Category: Biology Source Type: research

Modeling interactions and dynamics of Aphidius matricariae and Praon volucre (Hymenoptera: Braconidae) on two major aphid species in a greenhouse
In this study, we investigated the effects of extrinsic interspecific interactions between Aphidius matricariae Halifay and Praon volucre (Haliday) (Hymenoptera: Braconidae) on the population sizes of each parasitoid on Myzus persicae (Sulzer) on sweet pepper and Aphis gossypii Glover on cucumber, at 25 ± 2 °C, 60 ± 5% RH and a 14:10 h L:D photoperiod. The population dynamics of these parasitoids were also analyzed numerically using the Lotka–Volterra competition model. Interspecific interaction between the two parasitoids had reduced the population size of each parasitoid on both host aphids. The e...
Source: Biological Control - February 15, 2019 Category: Biology Source Type: research

Free living nematodes as alternative prey for soil predatory mites: An interdisciplinary case study of conservation biological control
Publication date: Available online 10 February 2019Source: Biological ControlAuthor(s): L.H. Azevedo, L.G. Leite, J.G. Chacon-Orozco, M.F.P. Moreira, M.P. Ferreira, L.M.G. Cano, V. Borges, D. Rueda-Ramírez, G.J de Moraes, E. PalevskyAbstractSpecies of soil predatory mites feed on a diverse diet making them excellent biocontrol candidates for conservation biocontrol programs. Free-living nematodes (FLN) are commonly found in soils and serve as prey for many soil predatory mites, but as far as we know, have never been used as alternative prey to enhance the efficacy of soil predatory mites for conservation biological ...
Source: Biological Control - February 11, 2019 Category: Biology Source Type: research

Frequency of resistance alleles to Lysinibacillus sphaericus in a Culex quinquefasciatus population treated with a L. sphaericus/Bti biolarvicide
This study aimed to evaluate the effect of a L. sphaericus/Bti combined biolarvicide treatment on the frequency of three cqm1 resistance alleles in Cx. quinquefasciatus larvae from one subarea (SA2) compared to another (SA1) where only L. sphaericus was kept. Larvae collected before and during a two-year trial were subjected to bioassays and PCR assays. Susceptibility to L. sphaericus showed oscillations in both areas, but no significant alterations of the lethal concentrations were detected. The pre-trial frequency of the resistance alleles was 0.057, while during the trial, the mean frequency was significantly lower in S...
Source: Biological Control - February 11, 2019 Category: Biology Source Type: research