Exploring species composition and population dynamics of thrips (Thysanoptera: Thripidae) in peanut crops in Argentina.

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From: Phytoparasitica(Vol. 49, Issue 5)
Publisher: Springer
Document Type: Report
Length: 386 words

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Keywords: Arachis hypogaea; Frankliniella schultzei; Caliothrips phaseoli; Orthotospovirus thrips vector Abstract Thrips (Thysanoptera: Thripidae) are major pests of peanut (Arachis hypogaea L.). They cause feeding damage and indirect injuries transmitting plant viruses. In Argentina, peanut is commonly affected by thrips. The crop also is infected by groundnut ringspot orthotospovirus, a virus transmitted by thrips vectors. However, in the country, information about thrips in peanut is very scarce. A 3-yr study was conducted to characterize the species composition and thrips population dynamics in the main peanut-producing area in Argentina. Frankliniella schultzei (Trybom), followed by Caliothrips phaseoli (Hood) were the most abundant species. Together the two species accounted for ~95-99% of the total adult thrips captured in each season. Significant different abundances were observed among these two thrips species throughout each peanut growing season. Nevertheless, the temporal dynamics of F. schultzei and C. phaseoli showed a similar trend in the three study years. In general, the colonization by F. schultzei started in late December and their population increased from the second half of January peaking around the first half of February. The highest densities of F. schultzei occurred simultaneously in foliage and flowers during the warmer months of the year. The C. phaseoli population inhabited on foliage and peaked in late February or mid-March. Other species collected were Frankliniella occidentalis (Pergande), Frankliniella gemina Bagnall, and Thrips tabaci (Lindeman). This study mentions F. gemina in peanut for the first time. Results show that F. schultzei and C. phaseoli are common thrips pests in peanut in Argentina and provide new information about the population dynamics of these thrips species in peanut crops. Author Affiliation: (1) Instituto de Patología Vegetal, Centro de Investigaciones Agropecuarias, Instituto Nacional de Tecnología Agropecuaria (IPAVE-CIAP-INTA), Av. 11 de Septiembre 4755, X5014MGO, Córdoba, Argentina (2) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Unidad de Fitopatología y Modelización Agrícola (UFyMA), Córdoba, Argentina (3) Instituto de Microbiología y Zoología Agrícola (IMYZA-CICVyA-INTA), Nicolás Repetto y de los Reseros s/n, CP 1686, Buenos Aires, Hurlingham, Argentina (4) Estación Experimental Agropecuaria Manfredi - INTA, RN 9 km 636, CP 5988, Manfredi, Córdoba, Argentina (5) Depto. Biología Agrícola - Facultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto (UNRC), 5800, Río Cuarto, Córdoba, Argentina (a) debreuil.soledad@inta.gob.ar Article History: Registration Date: 03/30/2021 Received Date: 10/14/2020 Accepted Date: 03/30/2021 Online Date: 04/26/2021 Byline:

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Gale Document Number: GALE|A678066476