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
Chemistry, Multidisciplinary
Maria Zottele, Johanna Mayerhofer, Hannah Embleton, Katharina Wechselberger, Jurg Enkerli, Hermann Strasser
Summary: The long-term field trials using Metarhizium brunneum BIPESCO 5 for biological control of Diabrotica v. virgifera showed that inundative mass application can effectively control pest larvae, but may not achieve a sustained decrease in heavily infested areas. Treated field sites had less damage compared to control sites, and the Metarhizium population structure differed significantly between treated sites.
APPLIED SCIENCES-BASEL
(2021)
Article
Entomology
Tufan Can Ulu, I. Alper Susurluk
Summary: The study aimed to optimize the in vitro solid mass production of the HBH hybrid strain of entomopathogenic nematodes, focusing on adjusting production parameters to improve efficiency and reduce costs. The results showed that the best production combination included agar containing soy lecithin, a temperature of 28 degrees Celsius, and a pH of 7, while agar media with a pH of 9 significantly decreased production yield.
TURKIYE ENTOMOLOJI DERGISI-TURKISH JOURNAL OF ENTOMOLOGY
(2021)
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
Entomology
Emre Dede, Alperen Kaan Butuner, Ismail Alper Susurluk
Summary: With limits on pesticide use, biological control has become increasingly important. In this study, the hybrid EPN strain HBN was assessed for its potential in controlling beet webworm. The results showed that the highest mortality rate of 97% was achieved with a dose of 20 IJs at 30 degrees C.
TURKIYE ENTOMOLOJI DERGISI-TURKISH JOURNAL OF ENTOMOLOGY
(2022)
Article
Entomology
Tufan Can Ulu, Gizem Ozbudak, Elif Ozge Duzenli, Seyrna Humeyra Cakir, Ismail Alper Susurluk
Summary: This study focused on determining the reproduction capacity of the Turkish hybrid Heterorhabditis bacteriophora Poinar, 1976 (Rhabditida: Heterorhabditidae) HBH strain and comparing it with its parents in order to improve its liquid culture yield. The hybrid HBH strain showed greater hermaphrodite counts and body length compared to its parents, indicating a potential for enhancing commercial EPN production. These findings provide valuable information for the development of commercial EPN production.
TURKIYE ENTOMOLOJI DERGISI-TURKISH JOURNAL OF ENTOMOLOGY
(2021)
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
Entomology
Adriano E. Pereira, Man P. Huynh, Alvar R. Carlson, Alexandra Haase, Robert M. Kennedy, Kent S. Shelby, Thomas A. Coudron, Bruce E. Hibbard
Summary: The western corn rootworm poses a serious threat to maize growers in the U.S. Corn Belt, with a need for new control strategies that are not cross-resistant with current insecticides and Bt proteins. Hv1a together with Cry3Bb1 may fit this role as a potential management tactic.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2021)
Article
Entomology
Zeinab Fathy, Randa Mohammed Abd El-Rahman
Summary: In some governorates of Egypt, the African migratory locust L. migratoria migratorioides is in a gregarious phase and swarm development has been prevented by biological control agents. Two entomopathogenic nematode species, Steinernema sp. (SII) and Heterorhabditis bacteriophora (HP88), were tested as natural enemies against the African locust at various concentrations. The nematodes showed significant effects on the digestive enzymes of the locusts, with decreased levels of some enzymes and increased levels of others.
INTERNATIONAL JOURNAL OF TROPICAL INSECT SCIENCE
(2023)
Article
Plant Sciences
T. E. Lephoto, V. M. Gray
Summary: This study reports the isolation of Heterorhabditis bacteriophora entomopathogenic nematodes from sandy loam soil in Walkerville, South Africa, marking the first discovery of this species in South African soil. Molecular and morphological techniques were used for identification, and future studies will explore the potential of this nematode as a biological control agent for agricultural pests.
ARCHIVES OF PHYTOPATHOLOGY AND PLANT PROTECTION
(2021)
Article
Entomology
Salma Javed, Ashraf Ali, Tabassum Ara Khanum
Summary: Globally, termites are a major problem for farmers, causing damage to crops and affecting vegetable growth. Biocontrol agents, such as entomopathogenic nematodes, play a vital role in pest management. The study evaluated the biocontrol potential of various nematode species against termites, with Steinernema pakistanense N-KA.04 and S. bifurcatum N-KA.93 showing the highest mortality rates. Proper application, timing, and farmer involvement are crucial in preventing disasters and building confidence in using effective nematode species for termite management.
EGYPTIAN JOURNAL OF BIOLOGICAL PEST CONTROL
(2021)
Article
Entomology
Tufan Can Ulu
Summary: This study investigated the impact of selected pesticides on the orientation behavior of entomopathogenic nematodes (EPNs). The results showed that most pesticides had a significant effect on the dispersal behavior of EPNs, especially 2,4-D and Imidacloprid. Other pesticides had relatively minor effects. All EPN species exhibited higher orientation towards larvae.
TURKIYE ENTOMOLOJI DERGISI-TURKISH JOURNAL OF 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)