On the Life History Habits And Economic Relations of the White Grubs And May B
On the Life History Habits And Economic Relations of the White Grubs And May B
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This assertion must be corrected in the light of numerous ex- periments made in my insectary in 1906 with May-beetles of several species, all of which so deposited their eggs in the ground that each was found inclosed within an earthen ball, a half inch in diameter, probably formed by the extrusion with the egg of an adhesive fluid which, upon hardening, held together the particles of earth which it had penetrated. This method of inclosure was so general that eggs were most easily found by sift...ing the dirt in breedi-ng-cages and breaking open the spherical pellets of earth thus separated. The eggs were laid at depths varying from not more than an inch to five or six inches below the surface, the number for each female varying from 44 for a specimen of L. Inversa to 67 for L. Implicita. The following extract from the breeding-cage report of Mr. J. J. Davis will give additional particulars of interest.
L. Inversa. June 12, 1906, I female beetle in breeding-cage. June 1 8, the earth examined and 44 eggs found, each in a ball of earth from 3 to 3^2 inches below the surface.
What to read after On the Life History Habits And Economic Relations of the White Grubs And May B?
You can find similar books in the "Read Also" column, or choose other free books by Stephen Alfred Forbes to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This assertion must be corrected in the light of numerous ex- periments made in my insectary in 1906 with May-beetles of several species, all of which so deposited their eggs in the ground that each was found inclosed within an earthen ball, a half inch in diameter, probably formed by the extrusion with the egg of an adhesive fluid which, upon hardening, held together the particles of earth which it had penetrated. This method of inclosure was so general that eggs were most easily found by sift...ing the dirt in breedi-ng-cages and breaking open the spherical pellets of earth thus separated. The eggs were laid at depths varying from not more than an inch to five or six inches below the surface, the number for each female varying from 44 for a specimen of L. Inversa to 67 for L. Implicita. The following extract from the breeding-cage report of Mr. J. J. Davis will give additional particulars of interest.
L. Inversa. June 12, 1906, I female beetle in breeding-cage. June 1 8, the earth examined and 44 eggs found, each in a ball of earth from 3 to 3^2 inches below the surface.
What to read after On the Life History Habits And Economic Relations of the White Grubs And May B?
You can find similar books in the "Read Also" column, or choose other free books by Stephen Alfred Forbes to read onlineMoreLess
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