Study on Spread Laws of Apriona swainsoni;

Natural population fluctuation of Apriona swainsoni;

A Study on Ecological Characteristics of Apriona swainsoni Population;

Study on the spatial distribution of entering tree hole and emergence hole of Apriona swainsoni Hope on the Sophora japonica;

Investigation on Biological Characteristics of Apriona swainsoni Hope;

Study on the Spatial Distribution Pattern and Sampling Techniques of the Larvas of Apriona swainsoni(Hope);

The effect of different proportion eggs of Dastarcus helophoroides (Fairmaire) on the larvae of Apriona swainsoni(Hope)was studied in lab.

The spatial distribution pattern of Apriona germari larva in Populus forest;

Transformation and expression of specific insecticide gene Bt cry3A in resident endogenetic bacteria isolated from Apriona germari (Hope) larvae intestines;

The variety and distribution of the bacteria in the intestine of Apriona germari (Hope) were qualitatively and quantitatively studied from May 1999 to October 2000.

The distribution of the cellulolytic enzymes namely Endo\|β\|1,4\|glucanase (C X),cellobiohydrolase (CBH) and β\|1,4\|glucosidase activities in gut and salivery glands of Apriona germari (Hope) was measured.

Intestinal flora of 47 Apriona germari(Hope) larvae,collected from fields,had been isolated and identified.

In order to clarify the cellulose utilizing mechanism of the Cerambycidae, the microorganism in the Apriona germari(Hope) larvae’s gut was cultured and identified.