Abstract: Time,space and nutrition multidimensional niches of main insect pest in gourd vegetables and competition among the species of insect pests are studied.The results showed that the highest multidimensional niche width is found in Aulacophora femoralis chinensis (0 3050)and the second is found in Trialeurodes vapororiorum (0.2505)and Aphis gossypii (0 2218);The highest multidimensional niche overlaps are found in Tetranychus cinnabarinus and Phyllotreta striolata(0.6012), followed by Plectotropis pseudopatula and Bradybaena ravida (0.5795) The multidimensional niches characteristitic value of guilds were used as similarities index of environmental resources exploitation.The competition and exploitation of guilds to environmental resoruces is discussed.Three competition guilds and 2 isolated species were identified for 10 species of insect pests by the method of clustering analysis of the nearest distance.

Key words: Gourd vegetable, Insect pests, Ecological niche, Competiting guild

CLC Number: 

• S436.42