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<p>Wheat is cultivated worldwide due to its high nutritional value and ranks as the third most produced crop globally. The present study evaluated the effects of seven wheat varieties on selected biological parameters of the khapra beetle, <i>Trogoderma granarium</i> Everts (Coleoptera: Dermestidae), under laboratory conditions at 30 ± 2&#xa0;°C and 65 ± 5% RH. Developmental duration, oviposition period, fecundity, longevity, and adult emergence varied significantly among the tested wheat varieties. Results revealed that the wheat variety Sids 12 was the least suitable host for <i>T. granarium</i>, recording the longest larval (27.40 and 27.20 days), pupal (7.60 days), and total developmental periods (38.60 and 38.00 days), as well as the lowest fecundity (11.20 and 10.28 eggs/female) and adult emergence (69.97 and 65.41%) under no-choice and free-choice methods, respectively. Overall, significant differences in life-history traits of <i>T. granarium</i> were observed among the tested wheat varieties. Sids 12 showed the highest level of resistance or least suitability, characterized by prolonged immature development and reduced reproductive performance and adult emergence.</p>

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Egyptian wheat varieties mediated biology and adult performance of Trogoderma granarium (Coleoptera: Dermestidae)

  • 期刊论文

  • 发表日期：

    2026年7月11日

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  • M. A. Mahmoud,
  • M. A. Mahmoud,
  • W. A. El-Dessouki,
  • A. M. A. Metwally

摘要

Wheat is cultivated worldwide due to its high nutritional value and ranks as the third most produced crop globally. The present study evaluated the effects of seven wheat varieties on selected biological parameters of the khapra beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae), under laboratory conditions at 30 ± 2 °C and 65 ± 5% RH. Developmental duration, oviposition period, fecundity, longevity, and adult emergence varied significantly among the tested wheat varieties. Results revealed that the wheat variety Sids 12 was the least suitable host for T. granarium, recording the longest larval (27.40 and 27.20 days), pupal (7.60 days), and total developmental periods (38.60 and 38.00 days), as well as the lowest fecundity (11.20 and 10.28 eggs/female) and adult emergence (69.97 and 65.41%) under no-choice and free-choice methods, respectively. Overall, significant differences in life-history traits of T. granarium were observed among the tested wheat varieties. Sids 12 showed the highest level of resistance or least suitability, characterized by prolonged immature development and reduced reproductive performance and adult emergence.