Host Range of Panicle Rice Mite Steneotarsonemus spinki Smiley (Acari: Tarsonemidae) in Sri Lanka

Abstract

Panicle Rice Mite (PRM) is the most destructive mite pest attacking rice Oryza sativa (L.) in the Caribbean, Asia and Central America. Schoenoplectus articulates (L.), and the wild rice, Oryza latifolia Desv., were recorded as alternate hosts of PRM in some countries. A survey was conducted to identify alternate hosts of PRM in Sri Lanka and the observations were confirmed by transmission test. Of the 675 weed plants, consisting of 475 grasses and 200 sedges, observed for PRM, Sacciolepis interrupta, Echinocloa crus-galli and Leptochloa chinensis were determined as alternate hosts of PRM. The transmission tests conducted with common rice associated weeds namely, Cyperus rotundus (L.), C. kyllingia Endl., C. iria (L.), Leptochloa chinensis (L.), Echinocloa crus-galli (L.), Paspalum scrobiculatum (L.), Imperata cylindrica (L.), Sacciolepis interrupta (Willd.) and 5 wild rice species (Oryza nivara, O. echinigery, O. rufipogon, O. granulata and O. rizomatis) revealed that, O. nivara, S. interrupta, E. crus-galli and L. chinensis facilitate the survival and oviposition of PRM. In addition, O. nivara, S. interrupta found to be highly susceptible to PRM than E. crus-galli and L. chinensis.

Checkmite!? Is the Resistance to Phytophagous Mites on Short and Stocky Wild Oryza Species?

“…Surprisingly, the wild rice genotypes tested ( O. glaberrima and O. barthii ) were characterized as highly sensitive to S. oryzae infestation, being even more sensitive than cultivated O. sativa genotypes (Figures 1A,B ). Similar results were reported by Veasey et al ( 2008 ), which tested the infestation of S. oryzae in four wild rice species ( O. glumaepatula, O. latifolia, O. alta , and O. grandiglumis ), and Chandrasena et al ( 2016 ), which tested the infestation of panicle rice mite Steneotarsonemus spinki in five wild rice species ( O. nivara, O. eichingeri, O. rufipogon, O. granulata , and O. rhizomatis ), with no signs of mite resistance.…”

Invasive Mite Species in the Americas: Bioecology and Impact

“…The rice mite, S. spinki, is the origin of southeastern Asia, where it has been reported causing damage to rice crops varying from 30 to 90% in China and 20-60% in Taiwan [25]. Presently, it is considered as a serious pest of rice in Tropical Asia and Caribbean [26]. Other than rice, S. spinki is associated to more than 70 plant species including weeds growing near rice fields, such as wild rice: O. latifolia, C. dactylon (Poaceae), Cyperus articulatus L., Cyperus iria L., and Oxycaryum sp.…”

“…Other than rice, S. spinki is associated to more than 70 plant species including weeds growing near rice fields, such as wild rice: O. latifolia, C. dactylon (Poaceae), Cyperus articulatus L., Cyperus iria L., and Oxycaryum sp. (Cyperaceae) [26,27]. The rice mite feeds on the adaxial surface of leaf sheaths and developing kernels evidenced by brown lesions and consequently reducing photosynthesis and having a negative effect on fertility [26].…”

“…(Cyperaceae) [26,27]. The rice mite feeds on the adaxial surface of leaf sheaths and developing kernels evidenced by brown lesions and consequently reducing photosynthesis and having a negative effect on fertility [26]. Damage also results in sterile grain syndrome, which is characterized by losing and brown discoloration of the flag leaf sheath, twisted panicle neck, and impaired grain development with empty or incompletely filled grains with brown spots and panicles standing erect.…”

Temporal distribution of rice sheath mite <i>Steneotarsonemus spinki</i> Smiley (Acari: Tarsonemidae) as influenced by the climatic parameters in the low-country wet zone of Sri Lanka

“…(Poaceae) and Schoenoplectus articulatus (L.) (Cyperaceae) have been reported as alternate hosts for RSM in India (Rao and Prakash, 1996;2002 (Chandrasena et al, 2016).…”