This work is a first approach to the knowledge of insects and other aquatic macroinvertebrates of rice agroecosystems from eastern Uruguay. The composition of the groups collected may represent an approximation to the knowledge of the quality of water sources associated with Uruguayan rice production. Sampling of aquatic macroinvertebrates was carried out during the grain-filling stage in crops without insecticide use, in three localities of Treinta y Tres Department. In each crop, macroinvertebrates were collected with a Surber-type network at the inlet and outlet of water to and from the paddy field and a neighbouring control area. Differences in morphospecies composition were found according to the location and source of water. Insecta was the most represented class in macroinvertebrate samplings (41.5%). Diptera (59.9%), Hemiptera (16.3%) and Ephemeroptera (14.0%) were the most abundant orders within insects. The Richness and Shannon Diversity Indices were higher than those recorded for similar studies in Costa Rica, Italy and Australia.

中文翻译：

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乌拉圭水稻农业生态系统中的水生大型无脊椎动物

这项工作是了解乌拉圭东部稻米农业生态系统的昆虫和其他水生大型无脊椎动物的第一种方法。所收集的组的组成可能代表对与乌拉圭稻米生产有关的水源质量知识的近似值。在Treinta y Tres Department的三个地区，在不使用杀虫剂的农作物的籽粒灌浆阶段对水生大型无脊椎动物进行了采样。在每种农作物中，都使用Surber型网络收集大型无脊椎动物，这些大型无脊椎动物分别位于水田和邻近控制区的出水口和出水口。根据水的位置和来源，形态物种组成存在差异。昆虫纲是大型无脊椎动物样本中代表最多的一类（41.5％）。双翅目（59.9％），半翅目（16。3％）和星翅目（14.0％）是昆虫中数量最多的。丰富度和香农多样性指数高于哥斯达黎加，意大利和澳大利亚类似研究的记录。