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<p>Thrips are important pests in many crop plants including cashew. The present investigation aimed to document any new occurrence of thrips species on cashew and assess their abundance. A total of 23 species were recorded interestingly with 16 new host records on cashew including an invasive species viz., <i>Thrips parvispinus</i>, and one predatory thrips species, <i>Aduncothrips asiaticus</i>. The genus <i>Thrips</i> was the predominant with seven species followed by <i>Scirtothrips</i> and <i>Haplothrips</i> with two species each, and the rest 12 genera with single species each. Intensive surveys indicated that <i>Thrips subnudula</i>, a newly recorded species has become the most abundant species in cashew, which was also recorded on seven other plants in the region raising concern for intensive studies. <i>Haplothrips gowdeyi</i>,<i> H. ganglbaueri</i> and <i>S. dorsalis</i> are other abundant species. The peak incidence of thrips was recorded during January-March. The DNA sequences of the mitochondrial COX1 gene of the four common thrips species were accomplished that helps in molecular identification of these species. <i>Thrips subnudula</i> and <i>H. gowdeyi</i> were present for an extended period of 10 months in the study region on different cashew genotypes. The alternate host plants for the thrips species were also recorded.</p>

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Changing thrips complex in cashew: new host records, seasonal incidence and implications on species abundance

  • 期刊论文

  • 发表日期：

    2026年5月6日

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  • K. Vanitha,
  • R. R. Rachana,
  • T. Venkatesan,
  • T. N. Raviprasad,
  • H. Rajashekara,
  • G. S. Mohana,
  • C. M. Karthick

摘要

Thrips are important pests in many crop plants including cashew. The present investigation aimed to document any new occurrence of thrips species on cashew and assess their abundance. A total of 23 species were recorded interestingly with 16 new host records on cashew including an invasive species viz., Thrips parvispinus, and one predatory thrips species, Aduncothrips asiaticus. The genus Thrips was the predominant with seven species followed by Scirtothrips and Haplothrips with two species each, and the rest 12 genera with single species each. Intensive surveys indicated that Thrips subnudula, a newly recorded species has become the most abundant species in cashew, which was also recorded on seven other plants in the region raising concern for intensive studies. Haplothrips gowdeyi, H. ganglbaueri and S. dorsalis are other abundant species. The peak incidence of thrips was recorded during January-March. The DNA sequences of the mitochondrial COX1 gene of the four common thrips species were accomplished that helps in molecular identification of these species. Thrips subnudula and H. gowdeyi were present for an extended period of 10 months in the study region on different cashew genotypes. The alternate host plants for the thrips species were also recorded.