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Scientia Silvae Sinicae ›› 2009, Vol. 12 ›› Issue (9): 111-115.doi: 10.11707/j.1001-7488.20090919

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Feeding Preferences of Dappula tertia (Lepidoptera： Psychidae)Larvae to Three Eucalyptus Species

Chang Mingshan1,2,Wen Juan1,Zhu Lin3,Yang Zhende1,Sun Yanjuan1,Yang Qijun4   

  1. 1. College of Forestry, Guangxi University　Nanning 530004； 2. Guangxi Forestry Research InstituteNanning 530001; 3. School of Life Sciences, Hainan Normal UniversityHaikou 571158； 4. Gaofeng Forest Farm of Guangxi　Nanning 530004
  • Received:2008-04-18 Revised:1900-01-01 Online:2009-09-25 Published:2009-09-25
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Abstract:

The feeding preferences of Dappula tertia larvae to three Eucalyptus species were detected with a leaf disc method. The efficiency of conversion of digested food (ECD) and efficiency of conversion of ingested food (ECI) of 4th instar larvae to three Eucalyptus species were measured by independent experiments. Dappula tertia larvae preferred E. urophylla leaves to those of E. robusta and E. protruding. The larval preferences to leaf age were also observed. The larvae consumed E. urohpylla mature leaves twice as much as those of tender leaves. The results also showed that the 4th instar larvae utilized and conversed E. urohpylla leaves more effectively than the leaves of E. robusta and E. protruding. The mechanisms of preferences and their importance for selection of Eucalyptus species in plantations were discussed.

Key words: Dappula tertia, Eucalyptus spp., feeding preference

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