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Further studies on the chromosomes of the Coleoptera

✍ Scribed by Stevens, N. M.

Publisher
John Wiley and Sons
Year
1909
Tongue
English
Weight
877 KB
Volume
6
Category
Article
ISSN
0022-104X

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✦ Synopsis

In three previous papers ('05, '06, '08) the chromosomes of several species of Coleoptera have been described and figured, and the riile of the heterochromosomes in sex determination discussed. The following pages are a further contribution to our knowledge of the character and behavior of the heterochromosomes, and of the methods of synapsis in this order of insects.

The methods used in handling the material have been the same as in previous work: fixation with Gilson's mercuro-nitric, Flemming's chromo-aceto-osmic, and Hermann's platino-acetoosmic fluids, and staining with iron haematoxylin or thionin. The aceto-carmine method has been used in testing fresh material, and as a check on the section method.

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