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Evolución de las poblaciones de insectos en una tabla de arroz de las marismas del bajo Guadalquivir

In the lower Guadalquivir river marshes, rice is grown with a flow-through system, which keeps the water oxygenated and with mild temperatures around 20-25 oC. Traditional farming workings are used in this area. Individuals collected belong to the Order Diptera (Fam. Chironomidae, Fam. Ephydridae and others families), Order Coleoptera (Fam. Dytiscidae and Fam. Hidrophylidae), Order Hemiptera (Fam. Corixidae and Fam. Notonectidae), Order Odonata (Fam. Libellulidae and Fam. Calopterygidae) and Order Ephemeroptera (Fam. Ephemeridae). Quantitatively the different groups are represented in a very heterogeneous way, however, the most numerous are the dipterans, in particular, the Chironomidae. There are important variations in the insect community of a rice field. These variations can be due to pesticide treatments applied to the rice, and water level oscillations.