Fluctuation of Mite Fauna Associated to Rice Culture （Oryza sativa L.： Poales, Poaceae） in Two Regions in the State of Rio Grande do Sul, Brazil  

作　　者：Noeli Juarez Ferla Matheus dos Santos Rocha Thais Femanda Estella de Freitas 

机构地区：[1]Acarology laboratory, Natural Science Museum, Univates University Center, Lajeado, Rio Grande do Su1155,95900-000, Brazil [2]EEA-Rice Experimental Station, IRGA. CEP: 94930-030 Cachoeirinha, Rio Grande do Sul, Brazil

出　　处：《Journal of Agricultural Science and Technology(B)》2013年第7期525-533,共9页农业科学与技术（B）

摘　　要：This survey had the aim to identify the mite fauna and mite ecologic interaction in rice culture, harvest 2010-2011, in Taquari and Cachoeirinha Counties, state of Rio Grande do Sul, Brazil. The mite population was biweekly evaluated on IRGA 424 and INTA PUITA CL cultivars in four areas where randomly sampled 20 plants/area. Fluctuation, ecologic indices and correlation between species and environmental factors were calculated. A total of 1,626 mites belonging to 14 species from 12 families were collected. Of the total specimens collected, 34.56% was on IRGA 424, in Taquari, 32.47% on IRGA 424-120 and 28.35% on IRGA 424-60, in Cachoeirinha and 4.61% on 1NTA PUIT,g, CL, in Taquari. Family Ascidae showed great richness, with four species, Lasioseius sp., Lasioseius sp., Proctolaelaps sp. and Cheiroseius sp.. Schizotetranychus oryzae Rossi de Simons （86.65%） was the phytophagous mite more abundant, while among the predators Neoseiulus paraibensis （Moraes and McMurtry） （6.88%） stood out. The population peaks of S. oryzae and N. paraibensis happened on March 2011. In all evaluated areas, the correlation between S. oryzae and N. paraibensis was positive, specially on IRGA 424-120 （r = 0.93, P = 0.006）.

关 键 词：ACARI Schizotetranychus oryzae Neoseiulus paraibensis biodiversity 

分 类 号：S511-09[农业科学—作物学] S379.5