Invasive Pest, &lt;I&gt;Thrips parvispinus&lt;/i&gt; (Karny) (thysanoptera: Thripidae) – A Looming Threat to Indian Agriculture

Rachana, R. R.; Roselin, P.; Amutha, M.; Sireesha, K.; Reddy, G. Narasa

doi:10.18520/cs/v122/i2/211-213

Cited by 19 publications

(12 citation statements)

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“…1c-f). These symptoms are in conformity with those of previous ones known from south India (Anonymous, 2021;Rachana et al, 2022;Timmanna et al, 2022). The expert team from DPPQ&S observed these on the greenhouse grown capsicum crop at Sambhalkha village of Ambala district (up to16 thrips/ flower) in flowers and terminal leaves; however, comparatively less infestation (2 to 3 thrips/ flower) was observed in Panipat and Panchkula districts (Table 1; Fig 1).…”

Section: Resultssupporting

confidence: 92%

Occurrence and spread of invasive thrips <i>Thrips parvispinus</i> (Karny) in north India

Timmanna

Prashantha²,

Shashank

et al. 2023

ije

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The invasive thrips Thrips parvispinus (Karny) (Thysanoptera: Thripidae) is an important insect pest causing severe damage in chilli-growing areas of south India in the last two years. In the present study, its spread in north and central India in chilli and capsicum is discussed along with diagnosis, occurrence, damage symptoms. A high level of infestation (ranging from 8-12 thrips/ flower) was observed on chilli crop in Madhya Pradesh (Khargone, Khandwa, Satna, Narasinghpur, Dhar) and on capsicum hybrids in Haryana (Ambala, Panchkula and Panipat) grown under greenhouse. However, its infestation was less (1-3 thrips/ flower) in chilli crop at Chhattisgarh (Bastar, Sarangarh-Bilaigarh, Balod bazar, Durg).

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Section: Resultssupporting

confidence: 92%

Occurrence and spread of invasive thrips <i>Thrips parvispinus</i> (Karny) in north India

Timmanna

Prashantha²,

Shashank

et al. 2023

ije

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“…In India, Thrips parvispinus (Karny) infestation was first time reported on papaya ( Carica papaya L) ( Tyagi et al, 2015 ) and subsequently on various host plants viz ., Brugmansia sp., Tagetes sp., Citrulluslanatus (Thunb.) Momordica charantia L. Chrysanthemum sp., Gossypium sp., Mangifera indica L. Tamarindus indica L. and Dahlia rosea , Capsicum annum ( Rachana et al, 2021 ; Roselin, Sharma & Rachana, 2021 ; Nagaraju et al, 2021 ). As per the joint survey report by the Directorate of Plant Protection Quarantine and Storage and State Agriculture Universities and Agriculture Departments of Telangana and Andhra Pradesh, more than 0.4 m ha of chilli crop infested with this invasive menace and 10 to 30 per cent yield loss was observed.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis and potential invasion risk of Thrips parvispinus under current and future climate change scenarios

Hulagappa

Baradevanal

Surpur

et al. 2022

PeerJ

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Background and Objective Invasive thrips, Thrips parvispinus Karny recently reported in India, causing a widespread severe infestation in more than 0.4 million ha of chilli (Capsicum annum L.) growing areas. This species is native to Thailand and most prevalent in other South East Asian countries. Large scale cultivation of the major host plants (chilli and papaya), and favourable climatic conditions in India and other countries similar to native range of Thrips parvispinus expected to favour its further spread and establishment to new areas. Materials and Methods The present study was undertaken to confirm invasive thrips species identity through both morphological and molecular approaches and predict its potential invasion using the maximum entropy (MaxEnt) algorithm. Results The model predicted species range in respect of discrimination of suitable and unsuitable areas for its occurrence both in current and future climatic scenarios. The model provided a good fit for species distribution with a high value of area under the curve (0.957). The jackknife test indicated annual mean temperature and precipitation were found to be the most important bioclimatic variable in determining the distribution of T. parvispinus. High suitability areas were predicted in the countries wherever its occurrence was reported with high discrimination ability of suitable and unsuitable areas. Key distinguishing morphological characters of T. parvispinus were illustrated through high-resolution scanning electron microscopic images. Conclusion The identity of the thrips causing wide spread damage in chilli confirmed through morphological and molecular approaches. Key identifying characters were described through high resolution scanning electron microscopic images for accurate identification of the species. MaxEnt model identified high suitability regions for the potential establishment of T. parvispinus in India and other parts of the world. This study facilitates forecasting of further spread and also suggests imposing strict domestic quarantine measures to curtail its establishment in the new areas.

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“…Morphological identification of thrips: The thrips were identified using the characters presented in research papers (Rachana et al, 2021 andTyagi et al, 2022) and certain key characters presented in scanning electron images (Hulagappa et al, 2022). Out of the ten specimens examined, all ten found to be females.…”

Section: Resultsmentioning

confidence: 99%

First report of invasive thrips, Thrips parvispinus (Karny) infestation on chilli from Eastern part of India

Sethy¹,

Narayana²,

Twinkle³

et al. 2023

EEC

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The South East Asian thrips, Thrips parvispinus (Karny) was first reported in India on Papaya in 2015 later it spread to many host plants such as cowpea, Dahlia rosea, cotton etc. The severe infestation on chilli was reported from southern states during last two years and the extent of loss was more than 50 percent. Therefore, a quick roving survey was conducted to monitor the thrips infestation in chilli at farmer fields of Varanasi and Mirzapur districts of Uttar Pradesh, India. The molecular barcoding of thrips infesting chilli at Varanasi and Mirzapur district of Uttar Pradesh confirmed to be the species as Thrips parvispinus. Therefore, it’s a first report of extended distribution to eastern part of India (Uttar Pradesh). The average number of thrips per three leaves and per flower was 9.1 and 3.1 in Varanasi while in Mirzapur it was 9.3 and 5.1 respectively. The T. parvispinus attained pest status in eastern part of India. The neighbor joining tree indicated certain level of genetic diversity in the species reported from different host plants. Farmers complained about severe crop loss and failure of many insecticides to control them, it may be attributed insecticide resistance

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Invasive Pest, <I>Thrips parvispinus</i> (Karny) (thysanoptera: Thripidae) – A Looming Threat to Indian Agriculture

Cited by 19 publications

References 0 publications

Occurrence and spread of invasive thrips <i>Thrips parvispinus</i> (Karny) in north India

Occurrence and spread of invasive thrips <i>Thrips parvispinus</i> (Karny) in north India

Diagnosis and potential invasion risk of Thrips parvispinus under current and future climate change scenarios

First report of invasive thrips, Thrips parvispinus (Karny) infestation on chilli from Eastern part of India

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