论柔毛山核桃机械抗虫机制和两种核桃象(虫甲)的自然选择

胡桃科植物含有数种化学物质,如胡桃酮(juglone)(brooks,1922;massey,1925;davis,1928;bode,1958;shen,1974),皂草甙(saponin)(handley,1961;applebaum,1964;applebaumetal.,1965;hutchins,1966;whittakerandfee-ny,1971)和鞣酸(tannin)(nierenstein,1934;wilkinsetal.,1953;pridham,1960;dollahiteetal.,1962;kingsbury,1964;vohraetal.,1966;feeny,1968、1969、1970；feenyetal.,1968;sondheimerandsimeone,1970;dementandmooney,1974;lawton,1976)等。