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小麦种质对麦长管蚜的抗性鉴定与评价 小麦是我国重要的粮食作物之一。 麦长管蚜 (Sitobion avenae Fabricius)是我国小麦生产上的重 要害虫，分布广、危害大，是多数麦区的优势麦蚜种 群 France. III. Action des populations F. , Metopolo- phium . . . populations of Sitobion avenae F , Metopolophium dirhodum Wlk and Rhopalosiphum padi L From 1974 to 1977, the impact of parasites on cereal aphids was studied in several places in Brittany (table 1) Aphidius uzbekistanicus was the main primary parasite of the 3 most important aphids ; A ervi, A picipes and ricariae were more or less import Eléments de détermination des deux principaux pucerons des . . . Eléments de détermination des deux principaux pucerons des céréales Sitobion avenae et Metopolophium dirhodum i1536-2442-12-45 Sitobion avenae is one of the most serious pests attacking agricultural plants and vectoring debilitating plant viruses (Blackman and Eastop 1984; Oerke 1994) The environment plays an important Appl. Entomol. Zool. 41 (1): 63 71 (2006) - J-STAGE Abstract Four grain aphids, Sitobion spp [S avenae (F ), S akebiae (Shinji), S miscanthi (Takahashi) and S fragariae (Walker)] on various grasses (Poaceae), nominated as Sitobion avenae-complex in this paper, were compared for their morphological and genetic characteristics For morphological comparison, ten characters frequently used in the identi-fication of S avenae-complex were Sitobion avenae résistance aux pyréthrinoïdes Objectif . . . Contexte Sitobion avenae est un ravageur majeur pour les cultures de graminées Il est responsable de dégâts directs, via l’infestation des épis, et de dégâts indirects, via la transmission de viroses Avec le retrait des néonicotinoïdes, le nombre de familles d’insecticides disponibles pour lutter contre ce ravageur s’est restreint La pression de sélection exercée par les Effects of experimental warming on competition between . . . Abstract Global warming is afecting the severity of yield losses due to increased pest abundances However, few studies have inves-tigated how warming may afect interspecific competitions in multi-pest systems Here, we investigated the efects of a 2 °C temperature increase on the population growth and distribution on plants of the aphids Rhopalosiphum padi and Sitobion avenae in single