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<p><i>Bactrocera correcta</i> Bezzi, major pest affecting jujube (Ber). The highest emergence was observed in Natham (46.97%) and Kottampatti (46.23%), followed by Vazhavachanur (44.17%), with the lowest emergence recorded in (wild genotype) Kallakadu (4.37%). Hence, the present study was confirmed detailed morphometric and molecular analysis of <i>B. correcta</i> across various regions of India, specifically Tamil Nadu, Punjab, and Rajasthan. The overall mean length and width of the egg were 1.26&#xa0;mm and 0.26&#xa0;mm respectively, and fully grown maggot measured as 6.59&#xa0;mm and 1.96&#xa0;mm and prepupa and pupa were 6.82 and 1.70&#xa0;mm, and 5.32 and 1.74&#xa0;mm, respectively and The overall mean length of the female whole body and wing expanse measured as 7.07 and 12.05&#xa0;mm and were as in male about 5.73 and 10.62&#xa0;mm. PCA showed that egg and maggot lengths, and prepupa size, were key variability drivers in Tamil Nadu. Adult female traits like antenna, thorax, wings, and legs varied by geography; Punjab aligned with thorax and wing attributes. Molecular PCR and sequencing of the mitochondrial cytochrome oxidase I COXI-COXII region confirmed species identity. Sequences from Tamil Nadu, Punjab and Rajasthan (GenBank: PQ197999.1, PQ198002.1, PQ197974.1, PQ197975.1) showed ~ 97.5–99.5% similarity, highest versus MN016975.1 and MN016969.1 (Tamil Nadu). Phylogenetic results showed Tamil Nadu and Punjab populations align with a Bangladesh sample, while Indian <i>C. vesuviana</i> formed a divergent out-group. Integrating morphometric and molecular tools enables accurate species and population separation. These results give crucial baseline data for region specific IPM using species-specific lures, mass trapping and targeted sanitation to manage <i>B. correcta</i> in ber orchards.</p>

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Morphometric and molecular approaches for portraying taxonomic status of Bactrocera correcta Bezzi (Tephritidae: Diptera) in jujube ecosystem

  • 期刊论文

  • 发表日期：

    2026年2月22日

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  • Kavin Palanivelu,
  • Usharani Balakrishnan,
  • Suresh Krishnasamy,
  • Kamala Jayanthi Pagadala Damodharam,
  • Sandeep Singh,
  • Chelvi Ramessh,
  • Arul Dhayalan,
  • Mini Madhavan Lysal

摘要

Bactrocera correcta Bezzi, major pest affecting jujube (Ber). The highest emergence was observed in Natham (46.97%) and Kottampatti (46.23%), followed by Vazhavachanur (44.17%), with the lowest emergence recorded in (wild genotype) Kallakadu (4.37%). Hence, the present study was confirmed detailed morphometric and molecular analysis of B. correcta across various regions of India, specifically Tamil Nadu, Punjab, and Rajasthan. The overall mean length and width of the egg were 1.26 mm and 0.26 mm respectively, and fully grown maggot measured as 6.59 mm and 1.96 mm and prepupa and pupa were 6.82 and 1.70 mm, and 5.32 and 1.74 mm, respectively and The overall mean length of the female whole body and wing expanse measured as 7.07 and 12.05 mm and were as in male about 5.73 and 10.62 mm. PCA showed that egg and maggot lengths, and prepupa size, were key variability drivers in Tamil Nadu. Adult female traits like antenna, thorax, wings, and legs varied by geography; Punjab aligned with thorax and wing attributes. Molecular PCR and sequencing of the mitochondrial cytochrome oxidase I COXI-COXII region confirmed species identity. Sequences from Tamil Nadu, Punjab and Rajasthan (GenBank: PQ197999.1, PQ198002.1, PQ197974.1, PQ197975.1) showed ~ 97.5–99.5% similarity, highest versus MN016975.1 and MN016969.1 (Tamil Nadu). Phylogenetic results showed Tamil Nadu and Punjab populations align with a Bangladesh sample, while Indian C. vesuviana formed a divergent out-group. Integrating morphometric and molecular tools enables accurate species and population separation. These results give crucial baseline data for region specific IPM using species-specific lures, mass trapping and targeted sanitation to manage B. correcta in ber orchards.