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On the cytotaxonomy of phasmids (Phasmatodea)

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Summary

A wide diversity in chromosome complement is found in two species of phasmids of the primitive group Prisopini—Prisopus ariadne Hebard and Prisopus berosus Westwood.

P. ariadne has a diploid male complement of 28, comprising 13 pairs of relatively large mediokinetic autosomes and Neo XY sex chromosomes.

P. berosus, 2n ♂=49, has relatively small autosomes most of which are mediokinetic, and retains the XO—XX sex mechanism. Chromosomal polymorphism in this species is suggested by the presence of an unequal pair of autosomes and a structural differentiation in the X in one of two males studied.

The relative amount of DNA per nucleus in male germ cells (Peulgen cytophotometry) shows a significant difference in total chromosomal content between the complements of the two species.

These data are discussed with reference to the cytotaxonomy of phasmids.

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Authors and Affiliations

  1. Department of Zoology, Columbia University, New York, USA

    Sally Hughes-Schrader

  2. Department of Zoology, Duke University, Durham, N. C., USA

    Sally Hughes-Schrader

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  1. Sally Hughes-Schrader
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Supported in part by research grant G-4370 from the National Institutes of Health, Public Health Service.

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Hughes-Schrader, S. On the cytotaxonomy of phasmids (Phasmatodea). Chromosoma 10, 268–277 (1959). https://doi.org/10.1007/BF00396574

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  • DOI: https://doi.org/10.1007/BF00396574

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