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Population cytology of the genus Phaulacridium

II. Phaulacridium marginale (Walker); chiasma frequency studies from South Island, New Zealand

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Abstract

Twenty seven populations of the grasshopper Phaulacridium marginale were sampled from South Island, New Zealand. An analysis of the chiasma frequency data showed that populations differed significantly for this metric. The populations appeared to fall into two distinct size groups. Morphological measurements confirmed this and a reanalysis of the chiasma frequency data revealed that although the two groups differed significantly for both mean cell chiasma frequency and between cell variances, there was no difference between populations within a group. Analysis of climatological data suggests that the “larger” individuals show different environmental (habitat) preferences from the smaller, which are restricted to one region of South Island. The taxonomic status of Ph. marginale as a single species is called into question.

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Authors and Affiliations

  1. Department of Genetics and Human Variation, La Trobe University, Melbourne

    M. Westerman

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  1. M. Westerman
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Westerman, M. Population cytology of the genus Phaulacridium . Chromosoma 46, 207–216 (1974). https://doi.org/10.1007/BF00332518

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  • DOI: https://doi.org/10.1007/BF00332518

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