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THYSANOPTERA ASSOCIATED WITH ORYZA SATIVA (POACEAE) AND BIONOMICS OF STENCHAETOTHRIPS BIFORMIS (BAGNALL) (TEREBRANTIA: THRIPIDAE).

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Název: THYSANOPTERA ASSOCIATED WITH ORYZA SATIVA (POACEAE) AND BIONOMICS OF STENCHAETOTHRIPS BIFORMIS (BAGNALL) (TEREBRANTIA: THRIPIDAE).
Autoři: Reyes, Cecilia P., Joshi, Ravindra C., Rillon, Genaro S.
Zdroj: Indian Journal of Entomology; 2025 Special Issue, Vol. 87, p182-204, 23p
Témata: RICE, PEST control, AGROBIODIVERSITY, ECOSYSTEM dynamics, THRIPS, POPULATION dynamics, PARASITOIDS
Abstrakt: Oryza sativa L. (Poaceae) is a global staple crop, which is increasingly threatened by sap-sucking insects, particularly the Thysanoptera. Among these, Stenchaetothrips biformis (Bagnall) (Terebrantia: Thripidae) inflicts appreciable yield losses across O. sativa-growing countries. The present article refers to the taxonomy, bioecology, and integrated management of S. biformis, while also documenting the other Thysanoptera associated with O. sativa agro-ecosystem. Morphological determination of S. biformis relies on adult features, and when complemented by molecular tools like CO1 and mitochondrial genome sequences (e.g., GenBank ON653412), confirms its phylogenetic relationship with Thrips imaginis Bagnall and Thrips palmi Karny (Thripidae). The life cycle of S. biformis spreads over 14-21 days from egg to adult, with faster development observed on tender foliage and susceptible Oryza spp. varieties like Nira. Feeding damage appears as pale-yellow streaks, shriveled and stunted leaves, and possible yield loss. Stenchaetothrips biformis is polyphagous, primarily infesting Poaceae and Cyperaceae, including Saccharum officinarum L. Population dynamics are driven by abiotic factors; dry spells and temperature between 25-35°C promote outbreaks, whereas heavy rainfall suppresses populations. Natural enemies, such as predatory Orius similis Feng and Orius tantillus (Motschulsky) (Hemiptera: Anthocoridae), as well as Coccinella arcuate Fabricius (Coleoptera: Coccinellidae) and Cyrtorhinus lividipennis Reuter (Hemiptera: Miridae), are present, although specific parasitoids for the 55 documented Thysanoptera species in this agro-ecosystem remain unrecorded. Integrated management strategies for S. biformis include exploration of host-plant resistance, cultural practices, biological management, and judicious chemical application. Resistant cultivars and wild accessions (Oryza glaberrima Steud., O. nivara Sharma et Shastry, and O. officinalis Wall. Watt.) exhibit resistance. Effective cultural practices include synchronised planting, seedbed flooding, and removal of alternate hosts, and nutrient management. This article highlights the imperative need for a multipronged, integrated approach to sustainably manage S. biformis, amidst escalating insect pressures and climate variability. [ABSTRACT FROM AUTHOR]
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Databáze: Complementary Index
Popis
Abstrakt:Oryza sativa L. (Poaceae) is a global staple crop, which is increasingly threatened by sap-sucking insects, particularly the Thysanoptera. Among these, Stenchaetothrips biformis (Bagnall) (Terebrantia: Thripidae) inflicts appreciable yield losses across O. sativa-growing countries. The present article refers to the taxonomy, bioecology, and integrated management of S. biformis, while also documenting the other Thysanoptera associated with O. sativa agro-ecosystem. Morphological determination of S. biformis relies on adult features, and when complemented by molecular tools like CO1 and mitochondrial genome sequences (e.g., GenBank ON653412), confirms its phylogenetic relationship with Thrips imaginis Bagnall and Thrips palmi Karny (Thripidae). The life cycle of S. biformis spreads over 14-21 days from egg to adult, with faster development observed on tender foliage and susceptible Oryza spp. varieties like Nira. Feeding damage appears as pale-yellow streaks, shriveled and stunted leaves, and possible yield loss. Stenchaetothrips biformis is polyphagous, primarily infesting Poaceae and Cyperaceae, including Saccharum officinarum L. Population dynamics are driven by abiotic factors; dry spells and temperature between 25-35°C promote outbreaks, whereas heavy rainfall suppresses populations. Natural enemies, such as predatory Orius similis Feng and Orius tantillus (Motschulsky) (Hemiptera: Anthocoridae), as well as Coccinella arcuate Fabricius (Coleoptera: Coccinellidae) and Cyrtorhinus lividipennis Reuter (Hemiptera: Miridae), are present, although specific parasitoids for the 55 documented Thysanoptera species in this agro-ecosystem remain unrecorded. Integrated management strategies for S. biformis include exploration of host-plant resistance, cultural practices, biological management, and judicious chemical application. Resistant cultivars and wild accessions (Oryza glaberrima Steud., O. nivara Sharma et Shastry, and O. officinalis Wall. Watt.) exhibit resistance. Effective cultural practices include synchronised planting, seedbed flooding, and removal of alternate hosts, and nutrient management. This article highlights the imperative need for a multipronged, integrated approach to sustainably manage S. biformis, amidst escalating insect pressures and climate variability. [ABSTRACT FROM AUTHOR]
ISSN:03678288
DOI:10.55446/IJE.2025.3504