Non-Randomness of Fluctuations in the European Corn Borer Ostrinia nubilalis (Hbn.) (Lepidoptera, Crambidae) Long-Term Population Dynamics in Krasnodar Territory

Фролов, А. Н.; Grushevaya, I. V.

doi:10.1134/s0013873818090056

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…Still, the eggs laid by the females do not have favorable conditions of temperature and humidity for the larvae to hatch. In their study, Frolov and Grushevaya [ 43 , 44 ] found that some of the larvae, up to 30%, pupated, and a new generation appeared. The same conclusion was reached by Barbulescu [ 45 , 46 , 47 ], who observed that in southern Romania’s conditions, 20% of the larvae transform into pupae, and a second generation of moths appears.…”

Section: Discussionmentioning

confidence: 99%

European Corn Borer (Ostrinia nubilalis Hbn.) Bioecology in Eastern Romania

Pintilie,

Trotuș,

Tălmaciu

et al. 2023

Insects

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Between 2020 and 2021, we conducted research in eastern Romania to monitor the bioecology of the European corn borer (Ostrinia nubilalis Hbn.), an important pest of corn. The bioecology research established the pest stage duration (egg, larva, pupa, and moth), the flight curve, and the flight peak. The bioecological study occurred in the experimental corn field and a field cage. According to our findings, the insect has one generation per year. The European corn borer hibernates as a mature larva in corn residues and continues developing in the spring, when the weather warms. It pupates from May to July over 37 days. Analyzing the data recorded during the winters of 2020 and 2021, we observed that the warming trend favored the high survival of hibernating larvae (60.7%). Due to the large number of mature larvae that had favorable conditions during the winter, there is an intense flight, starting in June and ending in September. When the first moth was caught in the light trap, the ∑(tn-10) °C (sum of degree days) was 245.6 °C. In 2020, the flight was recorded for 94 days. In 2021, the European corn borer flight lasted 104 days. The initial egg masses were detected when the total of ∑(tn-10) °C reached 351.5 °C. Moths laid the eggs for 25 days, mostly during peak flight in late June and early July. The first larvae hatched when ∑(tn-10) °C totaled 438.4 °C, and stages III–V were recorded in the harvested crop. Understanding the bioecology of the European corn borer can offer valuable insights into managing population levels and identifying optimal timing for addressing infestations in corn crops.

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Section: Discussionmentioning

confidence: 99%

European Corn Borer (Ostrinia nubilalis Hbn.) Bioecology in Eastern Romania

Pintilie,

Trotuș,

Tălmaciu

et al. 2023

Insects

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Leds and semiochemicals vs. sex pheromones: tests of the european corn borer attractivity in the Krasnodar territory

2020

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In two geographical points of the Krasnodar Territory, viz. vil. Botanika, Gulkevichi District (eastern subzone of the Central natural-economic zone of the Krasnodar Territory) and st. Kurchanskaya, Temryuk District (Anapo-Taman natural-economic zone) on industrial plantations of maize, Delta sticky traps supplied with various baits were tested for attractiveness for adults of the European corn borer (ECB), Ostrinia nubilalis Hbn. In contrast to sex pheromones, traps with ‘bisex lure’ (semiochemicals phenylacetaldehyde and 4-methoxy-2-phenethyl alcohol) or LEDs captured a considerable number of females, whose prognostic value was significantly higher than that of males. On maize fields near Botanika traps with ‘bisex lure’ caught moths almost at 20- and traps with LEDs more than 70-fold higher rate as compared to sex pheromones. On maize plantations near Kurchanskaya, where both the saturation of crop rotations with maize fields and the pest population is significantly lower, semiochemicals caught ECB moths at the same rate as sex pheromones, in contrast to LEDs, which attracted insects by an order of magnitude more frequently. The results of the tests indicate that the use of LED traps for monitoring of ECB is promising under the modern economic situation of expanding the territories intended for the production of corn grain.

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Non-Randomness of Fluctuations in the European Corn Borer Ostrinia nubilalis (Hbn.) (Lepidoptera, Crambidae) Long-Term Population Dynamics in Krasnodar Territory

Cited by 2 publications

References 15 publications

European Corn Borer (Ostrinia nubilalis Hbn.) Bioecology in Eastern Romania

European Corn Borer (Ostrinia nubilalis Hbn.) Bioecology in Eastern Romania

Leds and semiochemicals vs. sex pheromones: tests of the european corn borer attractivity in the Krasnodar territory

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