. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. Notes on the Spermatogenesis of the Wild and the Domesticated Silkworms. By Naohide Yatsu. Although the spermatogenesis of some lepidoptera has been lately studied with especial reference to the chromosomes by the late Miss STEVENS ('05), MUNSON ('06), Miss DEDERER ('07) and Miss COOK ('io), jet that of the silkworm has not been undertaken since the apperance of TOYAMA's papers ('94 a and b). What one finds in the later literature regarding the germ-cells of the silkworm is limited to fragmentary notes by La Valette St. George ('9
. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. Notes on the Spermatogenesis of the Wild and the Domesticated Silkworms. By Naohide Yatsu. Although the spermatogenesis of some lepidoptera has been lately studied with especial reference to the chromosomes by the late Miss STEVENS ('05), MUNSON ('06), Miss DEDERER ('07) and Miss COOK ('io), jet that of the silkworm has not been undertaken since the apperance of TOYAMA's papers ('94 a and b). What one finds in the later literature regarding the germ-cells of the silkworm is limited to fragmentary notes by La Valette St. George ('97), Hen- NEGUV ('98) and Meves ('03) on structures other than the chromo- somes. Such paucity of works on the spermatogenesis of the silk- worm is rather remarkable, since in most countries the material can be obtained without difficulty. As there are quite a number of varieties in the domesticated silkworm, I thought that they would be an excellent object for the study of correlation between their morphological features and the chromosomal characters. So I undertook a comparative study of spermatogenesis of the wild silkworm (Thcophila mandriano) and of the following seventeen varieties of the domesticated silkworm (Bombyx mori) : I. Dainyorai \ 2. Aojiku 3. Koishimaru 4. A ray a 5. Watako 6. Seihaku 7. Shirojima x Kurojima 8. Kasasagi 9. Corean No. I (dark brown) 10. Corean No I Cgrccn). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Nihon Do?butsu Gakkai; To?kyo? Do?butsu Gakkai. Tokyo : Societas
Size: 1570px × 1591px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1897
