Abstract
We have investigated the pattern of glia associated with central complex lineages in the embryonic brain of the grasshopper Schistocerca gregaria. Using the glia-specific marker Repo, we identified glia associated externally with such lineages, termed lineage-extrinsic glia, and glia located internally within the lineages, termed lineage-intrinsic glia. Populations of both glial types increase up to 60 % of embryogenesis, and thereafter decrease. Extrinsic glia change their locations over time, while intrinsic ones are consistently found in the more apical part of a lineage. Apoptosis is not observed for either glial type, suggesting migration is a likely mechanism accounting for changes in glial number. Proliferative glia are present both within and without individual lineages and two glial clusters associated with the lineages, one apically and the other basally, may represent sources of glia.
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Acknowledgments
We thank Drs. G. Technau (Repo) and M. Wullimann (PCNA) for their gifts of antibodies, Michael Loser for critical comments, and Karin Fischer for excellent technical assistance. Grant sponsor: Deutsche Forschungsgemeinschaft (BO 1434/3-5).
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Communicated by: Siegfried Roth
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Liu, Y., Boyan, G. Glia associated with central complex lineages in the embryonic brain of the grasshopper Schistocerca gregaria . Dev Genes Evol 223, 213–223 (2013). https://doi.org/10.1007/s00427-013-0439-7
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DOI: https://doi.org/10.1007/s00427-013-0439-7