scholarly journals Control Potentials of Three Entomopathogenic Bacterial Isolates for the Carob Moth, Ectomyelois ceratoniae (Lepidoptera: Pyralidae) in Pomegranates

Agriculture ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1256
Author(s):  
Saqer S. Alotaibi ◽  
Hadeer Darwish ◽  
Sarah Alharthi ◽  
Akram Alghamdi ◽  
Ahmed Noureldeen ◽  
...  
Keyword(s):  
Management Practices ◽  
Culture Media ◽  
Integrated Management ◽  
Larval Instar ◽  
Larval Mortality ◽  
Punica Granatum ◽  
Ectomyelois Ceratoniae ◽  
Lepidoptera Pyralidae ◽  
Adverse Environmental Conditions ◽  
Carob Moth

Ectomyelois ceratoniae (Lepidoptera: Pyralidae) is the primary pest of pomegranates in Saudi Arabia and is mostly controlled using broad-spectrum pesticides. Providing environmentally sound choices to limit reliance on chemical management is a major challenge in the control of E. ceratoniae and, as a consequence, in the protection of pomegranate crops from its invasion. Entomopathogenic bacteria (EPB) symbiotically associated with entomopathogenic nematodes (EPNs) are well-known biocontrol agents of soil-dwelling or aerial pests. The bacterium symbiont (EPB) is the real insect-killing biocontrol agent, while the nematode (EPN) serves as a vector. We wondered whether the EPB vector, which is extremely vulnerable to adverse environmental conditions, like drought, high temperatures, and repellent soil microorganisms, could be omitted. We intended to evaluate the biocontrol potential of directly applied EPB cells and cell-free culture media (CFCM) on the larval instar E. ceratoniae. Xenorhabdus budapestensis DSM 16342 (EMA), X. szentirmaii DSM 16338 (EMC), and Photorhabdus luminescens ssp. laumondi (TT01) strains were used. After three days of exposure, the cells of EMA, EMC, and TT01 strains resulted in 100%, 88%, and 79.3% larval mortality rates, respectively. The applied EMA CFCM resulted in 53.7% larval mortality, indicating the presences of (at least) one extremely strong component produced by EMA. We concluded that the direct application of either the EPB cells or the CFCM must be a prospective alternative biocontrol of E. ceratoniae, especially to protect the important fruit (pomegranate, Punica granatum) cultivars. Especially, newly identified local EPB isolates could be applied as bio-pesticides for integrated management practices or organic pomegranate production.

EFFECT OF BIOCHEMICAL METABOLITES OF DATES ON NUTRITIONAL PERFORMANCES OF CAROB MOTH, (ECTOMYELOIS CERATONIAE ZELLER (LEPIDOPTERA: PYRALIDAE))

2021 ◽  
Vol 77 (2) ◽  
Author(s):  
Ayoub Hadjeb ◽  
Mehaoua M. Seghir ◽  
Adjami Yasmine ◽  
Lebbouz Ismahane ◽  
Ouakid M. Laid
Keyword(s):  
Ectomyelois Ceratoniae ◽  
Lepidoptera Pyralidae ◽  
Carob Moth

Karyotype, sex chromatin and sex chromosome differentiation in the carob moth,Ectomyelois ceratoniae(Lepidoptera: Pyralidae)

Caryologia ◽  
2004 ◽  
Vol 57 (2) ◽  
pp. 184-194 ◽  
Author(s):  
Jouda Mediouni ◽  
Iva Fuková ◽  
Radmila Frydrychová ◽  
Mohamed Habib Dhouibi ◽  
František Marec
Keyword(s):  
Sex Chromosome ◽  
Ectomyelois Ceratoniae ◽  
Chromosome Differentiation ◽  
Sex Chromatin ◽  
Lepidoptera Pyralidae ◽  
Carob Moth

Effects of seasonal acclimation on cold tolerance and biochemical status of the carob moth, Ectomyelois ceratoniae Zeller, last instar larvae

2014 ◽  
Vol 104 (5) ◽  
pp. 592-600 ◽  
Author(s):  
M. Heydari ◽  
H. Izadi
Keyword(s):  
Body Weight ◽  
Cold Hardiness ◽  
Glycogen Content ◽  
Punica Granatum ◽  
Low Molecular Weight ◽  
Ectomyelois Ceratoniae ◽  
Biochemical Status ◽  
Total Body ◽  
Carob Moth ◽  
Seasonal Acclimation

AbstractThe carob moth, Ectomyelois ceratoniae, a pest of Punica granatum, overwinters as a larva. In this study, physiological changes, water content, cold hardiness and supercooling points (SCPs) in relation to ambient temperature in the overwintering period (October to March) and changes of these factors between diapausing (February) and non-diapausing (September) larvae were studied. Pupae that were derived from diapausing larvae (April) and  from non-diapausing larvae (August) were also compared. Total body sugar, lipid and protein contents increased with decrease in the temperature and reached the highest levels (12.82, 1.99 and 6.11 mg g−1 body weight, respectively) in February, but glycogen content decreased and reached the lowest level (1.12 mg g−1 body weight) in February. There were significant differences in the levels of these compounds between diapausing and non-diapausing larvae, and pupae that were derived from diapausing and non-diapausing larvae. Trehalose and myo-inositol contents increased during diapause and reached the highest levels (0.50 and 0.07 mg g−1 body weight, respectively) in February. There were significant differences in the levels of these compounds between diapausing and non-diapausing larvae, but the differences between pupae that were derived from diapausing and non-diapausing larvae were not significant. The SCP of diapausing larvae (−17.3 °C) was significantly lower than in the non-diapausing larvae (−12.0 °C). SCP decreased gradually in autumn and reached the lowest level in the middle of winter. Changes of cold hardiness were inversely proportional to SCP changes. The lowest levels of water (65%) and weight (43.13 mg) were recorded in January and March, respectively. Most probably, lipids play a role as energy reserve, and low-molecular weight carbohydrates and polyols provide cryoprotection for overwintering larvae of the carob moth. Since the overwintering larvae die at temperatures above the SCP, the carob moth larvae were found to be a chill-intolerant insect.

scholarly journals Effect of some diets on demographic parameters of Ectomyelois ceratoniae (Zeller) (Lepidoptera: Pyralidae) in vitro

2015 ◽  
Vol 55 (2) ◽  
pp. 212-219 ◽  
Author(s):  
Saeideh Mortazavi ◽  
Mohammad Amin Samih ◽  
Hamid Ghajarieh ◽  
Ali Jafari
Keyword(s):  
Survival Rate ◽  
Reproductive Value ◽  
Intrinsic Rate Of Increase ◽  
Net Reproductive Rate ◽  
Ectomyelois Ceratoniae ◽  
Synthetic Diet ◽  
Rate Of Increase ◽  
Lepidoptera Pyralidae ◽  
Carob Moth

Abstract The carob moth, Ectomyelois ceratoniae (Zeller) (Lepidoptera: Pyralidae), is a cosmopolitan species widely distributed in different habitats worldwide. This moth is a well known pest of many fruits as well as dried fruits in storage. In this study, the biological parameters of the carob moth were studied in a growth chamber under controlled conditions (30±2°C, 65±5% and 16L : 8D). The studied moths were on four diets including pistachio, and pomegranate (both are referred to as the natural diets), and semi-synthetic, and synthetic food. The results demonstrated that survival rate of the carob moth on the two natural diets was higher than the survival rate of the carob moth on the semi-synthetic, and synthetic diets (also referred to as the artificial diets). The highest and lowest amount of life expectancy (ex) were obtained for moths on the pistachio diet (38.82), and the pomegranate diet (29.32), respectively. The highest age-stage specific reproductive value (vxj) was observed for moths on the pistachio diet (181.1). The intrinsic rate of increase (r) and finite rate of increase (λ) were calculated to be highest when the pomegranate diet was used (0.091 and 1.096) and lowest when the synthetic diet was used (0.06) and (1.062). The highest amounts of net reproductive rate and mean fecundity were obtained for moths fed the pistachio diet and the lowest were for moths fed the synthetic diet. Our results also showed that the mean generation times were 48.32, 44.42, 37.19, and 42 days for moths fed synthetic food, pistachio, pomegranate, and semi-synthetic food, respectively. The outcome of this research can be used to effectively select the most useful rearing of carob moths for using them in natural pheromone traps as Integrated Pest Management programs.

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