Article
Entomology
Ryan W. Geisert, Man P. Huynh, Adriano E. Pereira, David I. Shapiro Ilan, Bruce E. Hibbard
Summary: Bioassays with newly hatched larval insects can be compromised by the feeding state of the larvae. Mortality monitoring assays can be negatively impacted by starvation effects on the larvae. The development of an improved artificial diet for western corn rootworm larvae offers a new bioassay method for evaluating entomopathogenic nematodes.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2023)
Article
Zoology
Giulia Godina, Bart Vandenbossche, Maja Schmidt, Aviel Sender, Akwo Hanson Tambe, Maria Touceda-Gonzalez, Ralf-Udo Ehlers
Summary: Winter oilseed rape is a major crop in Europe, but it is plagued by the cabbage stem flea beetle. Due to restrictions on neonicotinoids, farmers now use pyrethroids to control the beetle. However, studies have shown that the beetle is developing resistance to these chemicals. This study explores the potential of using entomopathogenic nematodes as a sustainable alternative control measure, finding that the third larval instar stage is the most susceptible and Steinernema feltiae and the cold active SDT1-IL1 Heterorhabditis bacteriophora strain are the most effective nematodes against the beetle.
JOURNAL OF INVERTEBRATE PATHOLOGY
(2023)
Article
Entomology
Aydemir Baris
Summary: This study conducted a laboratory investigation on both adult and mature larval stages of Gonioctena fornicata and found that entomopathogenic nematodes showed high efficacy in controlling both stages of the pest.
EGYPTIAN JOURNAL OF BIOLOGICAL PEST CONTROL
(2023)
Article
Agronomy
Apostolos Kapranas, Anna Chronopoulou, Ioanna C. Lytra, Arne Peters, Panagiotis G. Milonas, Dimitrios P. Papachristos
Summary: The study found that among the three commercial EPN species, S. feltiae had the highest suppression effect and longest duration. Additionally, S. feltiae and S. carpocapsae were able to infect medfly larvae inside fruits, significantly reducing the emergence of adult medflies.
PEST MANAGEMENT SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Braden G. Evans, Justin M. Renkema
Summary: The study showed that Steinernema riobrave has a high mortality rate on Drosophila suzukii larvae, making it an effective biocontrol agent, especially in warm climates.
BIOCONTROL SCIENCE AND TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Jiri Nermut', Miriam Hopfgartner, Jana Konopicka, Vladimir Puza
Summary: This study evaluated the effects of foraging behavior of Steinernema feltiae, Heterorhabditis bacteriophora, and Steinernema carpocapsae on the dissemination of Cordyceps fumosorosea. Additionally, the impact of the nematode's cuticle and various adhesives on spore transmission was investigated. The results showed that nematodes improve the transmission of C. fumosorosea spores, and sunflower oil was the most successful adhesive medium.
BIOLOGICAL CONTROL
(2023)
Article
Agronomy
Naser Eivazian Kary, Zahra Sanatipour, Davoud Mohammadi, Aoife B. Dillon
Summary: The study compared the efficacy of two species of entomopathogenic nematodes against the potato tuber moth, with S. feltiae showing greater virulence. Both nematodes were affected by abamectin, but H. bacteriophora was less impacted. The research demonstrated that combined applications of chemical insecticides and nematodes offer a reduction in inputs, making it an attractive proposition for end users both economically and as a resistance management strategy.
Article
Agronomy
Anna Mazurkiewicz, Magdalena Jakubowska, Dorota Tumialis, Jan Bocianowski, Kamila Roik
Summary: The study evaluated the efficiency of native isolate of Steinernema feltiae and commercial preparation Larvanem in controlling cereal leaf beetle larvae, resulting in a moderate effectiveness of around 47.8% to 49.5%. The biggest reduction in leaf damage was found in crops treated with the commercial preparation, with the leaf infection index being more than twofold smaller than that for the control.
Article
Agriculture, Multidisciplinary
Murside Yagci, Fatma Dolunay Erdogus, Tugba Akdeniz Firat, Sait Erturk
Summary: The aim of this study was to determine the biocontrol potential of local entomopathogenic nematode isolates against the confused flour beetle. Results showed that the local isolates were effective biological control agents for the confused flour beetle, but further research is needed for field application.
JOURNAL OF PLANT DISEASES AND PROTECTION
(2023)
Article
Entomology
Indra Kumar Kasi, Mohinder Singh, Kanchhi Maya Waiba, S. Monika, M. A. Waseem, D. Archie, Himanshu Gilhotra
Summary: The study demonstrated that local strains of EPNs (S. feltiae HR1 and H. bacteriophora HR2) showed significant larvicidal activity against P. brassicae, with the larval mortality increasing over time. This suggests that these EPNs could be effective biocontrol agents for managing insect pests like cabbage butterflies.
EGYPTIAN JOURNAL OF BIOLOGICAL PEST CONTROL
(2021)
Article
Entomology
Naser Eivazian Kary, Zahra Sanatipour, Davoud Mohammadi, Gary Dunphy
Summary: The virulence and invasion efficiency of three entomopathogenic nematodes against Phthorimaea operculella were evaluated. Steinernema species were found to be more effective against the pest, with Heterorhabditis bacteriophora showing lower efficacy. The sex ratio of the nematodes was also affected by the concentration of infective juveniles and the developmental stage of the host.
JOURNAL OF ASIA-PACIFIC ENTOMOLOGY
(2022)
Article
Entomology
Alperen Kaan Butuner, Merve Ilktan, Ismail Alper Susurluk
Summary: This study detected the efficacy and mortality rates of entomopathogenic nematodes (EPN) stored at different temperatures and periods. The results showed that HBH and TUR-S4 stored at 25℃ for 14 days, and TUR-S3 stored at 21℃ for 21 days exhibited the highest virulence. The findings of this study are important for determining suitable temperature conditions for storing and transporting EPN.
TURKIYE ENTOMOLOJI DERGISI-TURKISH JOURNAL OF ENTOMOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Tufan Can Ulu, Hilal Erdogan
Summary: The study aimed to evaluate the feasibility of applying entomopathogenic nematodes (EPNs) in gelatin capsules and planting with a precision planter for more controlled and uniform EPN application. The larval mortality for capsule applications was similar to drip irrigation applications. Dispersal and persistence trials showed that capsule application did not have adverse effects on the dispersal and field persistence of EPNs under the tested conditions.
BIOLOGICAL CONTROL
(2023)
Article
Agriculture, Multidisciplinary
Arife Gumus Askar, Ebubekir Yuksel, Atilla Ocal, Goksel Ozer, Halil Kutuk, Abdelfattah Dababat, Mustafa Imren
Summary: Abundant populations of entomopathogenic nematodes (EPNs) with potential for biocontrol of the black cutworm was found in potato-growing areas of Turkey. This study also reports the first presence of Oscheius tipulae in Turkey.
JOURNAL OF PLANT DISEASES AND PROTECTION
(2022)
Article
Agronomy
Esengul Ozdemir, Emre Inak, Emre Evlice, Ebubekir Yuksel, Rabia Albayrak Delialioglu, I. Alper Susurluk
Summary: The Colorado potato beetle is a major pest of potato plants with a rapid resistance development ability, leading to control failures with chemical insecticides. This study evaluated the combined use of insecticides and entomopathogenic nematodes for integrated control, showing increased efficacy against resistant populations. Further research on the use of synergistic chemicals with entomopathogenic nematodes is recommended for both laboratory and field conditions.
Article
Ecology
Martin Volf, Tereza Volfova, Carlo L. Seifert, Antonia Ludwig, Rolf A. Engelmann, Leonardo Re Jorge, Ronny Richter, Andreas Schedl, Alexander Weinhold, Christian Wirth, Nicole M. van Dam, Ted Turlings
Summary: The study suggests that branch-localised induction of plant defenses and vertical stratification in forest canopies have significant impacts on herbivore assemblages, affecting predation and herbivory. Diverse factors, including branch-localised induction, variation between tree individuals, and predation, contribute to the variation across canopies.
Article
Biochemistry & Molecular Biology
Geoffrey Jaffuel, Sribala Krishnamani, Ricardo A. R. Machado, Raquel Campos-Herrera, Ted C. J. Turlings
Summary: A study found that hexadecanal and 2-heptadecanone emitted by EPN-infected insects can effectively repel ants, potentially becoming an environmentally friendly pest deterrent. Further experiments are needed to fully determine their application potential.
JOURNAL OF CHEMICAL ECOLOGY
(2022)
Article
Entomology
Patrick Fallet, Lara De Gianni, Ricardo A. R. Machado, Pamela Bruno, Julio S. Bernal, Patrick Karangwa, Joelle Kajuga, Bancy Waweru, Didace Bazagwira, Thomas Degen, Stefan Toepfer, Ted C. J. Turlings
Summary: The study found that local strains of entomopathogenic nematodes from the area of invasion are as effective in infecting and killing fall armyworm as commercial strains or those from the armyworm's native range. These findings will aid the development of locally acceptable and effective biological control products.
Article
Entomology
Tian Xu, Nuo Zhang, Meng Xu, Gaetan Glauser, Ted C. J. Turlings, Li Chen
Summary: Ants coordinate foraging behavior through species-specific trail pheromones. Previous studies on the trail pheromone composition of Solenopsis invicta, a notorious invasive ant species, have provided contrasting results. This study reanalyzed the chemicals in the ant's gland extract and confirmed the major components of the trail pheromone.
Article
Agronomy
Steve Breitenmoser, Thomas Steinger, Alice Baux, Ivan Hiltpold
Summary: Intercropping winter oilseed rape with frost-resistant companion plants has been found to reduce insect pest damage and increase crop yield. This practice has the potential to reduce reliance on chemical inputs and is more environmentally friendly.
Article
Plant Sciences
Wenfeng Ye, Carlos Bustos-Segura, Thomas Degen, Matthias Erb, Ted C. J. Turlings
Summary: Extensive transcriptomic analyses have revealed distinct differences in the gene expression profiles of maize plants upon shoot and root attack, both locally and distantly from the affected tissue. This study provides detailed insights into the specificity of plant defense responses and offers a molecular resource for further genetic studies on maize resistance to herbivores. It also paves the way for novel strategies to enhance maize resistance to pests.
Article
Biotechnology & Applied Microbiology
Patrick Fallet, Didace Bazagwira, Julie Morgane Guenat, Carlos Bustos-Segura, Patrick Karangwa, Ishimwe Primitive Mukundwa, Joelle Kajuga, Thomas Degen, Stefan Toepfer, Ted C. J. Turlings
Summary: The incorporation of Steinernema carpocapsae, an entomopathogenic nematode, into protective formulations can effectively control fall armyworm on maize plants and is comparable to the standard dose of cypermethrin, a commonly used synthetic insecticide.
BIOLOGICAL CONTROL
(2022)
Article
Plant Sciences
Chengcheng Yao, Lixiao Du, Qingsong Liu, Xiaoyun Hu, Wenfeng Ye, Ted C. J. Turlings, Yunhe Li
Summary: Through studying the volatiles emitted by rice plants, we found that they have direct and indirect resistance against the striped stemborer. The plants exposed to these volatiles exhibited increased expression of defense genes, higher levels of defensive substances, and attraction to parasitic wasps. These findings provide new management strategies to enhance rice resistance.
Article
Chemistry, Multidisciplinary
Sergio Rasmann, Ivan Hiltpold
Summary: Root exudates, a complex mixture of compounds released by plant roots, play a crucial role in mediating interactions between plants and their biotic and abiotic surroundings. Understanding the activity and interactions of root exudates is essential for addressing challenges such as food security and climate change.
Article
Plant Sciences
Jiamei Zeng, Wenfeng Ye, Wenhui Hu, Xiaochen Jin, Peng Kuai, Wenhan Xiao, Yukun Jian, Ted C. J. Turlings, Yonggen Lou
Summary: Plants can detect the presence of insects by sensing the production of Vitellogenin (Vg). This triggers defense responses that reduce insect oviposition success and attract parasitoid wasps. Vg also plays a critical role in insect growth and reproduction.
Article
Biochemistry & Molecular Biology
Mary Clancy, Marine Mamin, Galien Fluckiger, Teresa Quijano-Medina, Biiniza Perez-Nino, Luis Abdala-Roberts, Ted C. J. Turlings, Carlos Bustos-Segura
Summary: This study provides a comprehensive evaluation of the terpene profiles of wild Gossypium hirsutum plants, revealing a high level of intraspecific diversity and geographic gradient in chemotypes.
Article
Ecology
Diana la Forgia, Clement Martin, Ted C. J. Turlings, Francois Verheggen
Summary: Wireworms are insect pests that damage the roots of crops, and it is unclear how they choose their host plants. Studies have found that 2-pentylfuran is a key signal that attracts wireworms to their host plants.
ARTHROPOD-PLANT INTERACTIONS
(2023)
Article
Agronomy
Brian Kunkel, William J. Cissel, John F. Tooker, Dana K. Howe, Dee R. Denver, Rory J. Mc Donnell, Ivan Hiltpold
Summary: Slugs are damaging pests to crops, and their management often relies on synthetic chemistry. A survey was conducted to investigate the presence of malacopathogenic nematodes in soybean fields in the mid-Atlantic region. The distance from the field edge did not affect the presence of nematodes, but soil type did. This study provides valuable insights into the natural populations of mollusk-associated nematodes in the region.
Article
Ecology
Marine Mamin, Armelle Vallat, Ted C. J. Turlings
Summary: Cotton plants respond to herbivory by increasing gland density and defensive compounds, which is primarily triggered by physical damage rather than insect-derived elicitors. Repeated mechanical damage causes systemic induction of cotton glands without needing the presence of caterpillar regurgitant. This study provides valuable insights into chemical ecology and plant defense theory, and can be effectively used in practical classes.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Zoology
Ricardo A. R. Machado, Aashaq Hussain Bhat, Joaquin Abolafia, Ebrahim Shokoohi, Patrick Fallet, Ted C. J. Turlings, Eustachio Tarasco, Vladimir Puza, Joelle Kajuga, Xun Yan, Stefan Toepfer
Summary: In order to find environmentally friendly and effective alternatives to manage insect pests, two new species of entomopathogenic nematodes were collected from agricultural soils in Rwanda. Through molecular and morphological characterization, as well as crossing experiments, it was determined that these nematodes are different from other known species.
JOURNAL OF NEMATOLOGY
(2022)