𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Chromosomes of three species of mantidae

✍ Scribed by Robert L. King

Publisher
John Wiley and Sons
Year
1931
Tongue
English
Weight
350 KB
Volume
52
Category
Article
ISSN
0362-2525

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✦ Synopsis

Abstract

There are twenty‐seven spermatogonial chromosomes in Tenoder'a sinensis, three of which are larger than the others and lag behind in anaphase. These three chromosomes have been traced through the prophases of the first spermatocyte to the metaphase, where they appear as a hexad. In the first spermatocyte division two of the constituent diads of the hexad pass to one pole, the remaining one to the other, thus giving rise to two types of second spermatocytes, one with thirteen and the other with fourteen chromosomes. There are twenty‐eight chromosomes in somatic metaphases of the female; four of these chromosomes are larger than the others. The sex chromosomes of the male are represented by the formula X~a~ + Y + X~b~, that of the female by 2X~a~ + 2X~b~.

Similar conditions are reported for Mantis religiosa and Stagmomantis carolina.

πŸ“œ SIMILAR VOLUMES

Chromosome analysis of three species ofP
Chromosome analysis of three species ofPatella(Archaeogastropoda)
✍ P. Cervella; L. Ramella; C. A. Robotti; G. Sella πŸ“‚ Article πŸ“… 1988 πŸ› Springer Netherlands 🌐 English βš– 438 KB

Differences in karyotypic structure are compared with reported isozyme differences in three Mediterranean species of Patella. In addition, the karyotypic structure of Patella is discussed in terms of the karyotypic variability of Archaeogastropoda. Both P. lusitanica and R caerulea have a haploid co