Summary
Embryos ofPyrrhocoris apterus exposed to juvenile hormone mimics (JH) were examined throughout development to determine the progressive effects of treatment. Prior to blastokinesis whole experimental embryos did not differ morphologically from control embryos fixed at the same stage. Treated embryos failed to complete blastokinesis due to abnormal breakage of the extra-embryonic membranes.
In the embryo-larva transition, JH exposure interfered with dorsal closure, with the consolidation of the nerve cord, and with the extension of appendages. Yet pigmentation and muscle differentiation occurred.
These effects were interpreted and discussed with reference to the role of juvenile hormone in post-embryonic development.
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This is a portion of a dissertation submitted to the graduate school of Harvard University, in partial fulfillment of the requirements for the degree of Doctor of Philosophy (1973). It was previously reported in abstract (Enslee and Riddiford, 1970). This research was supported by NIGMS Training Grant T01 GM 00036-09, 11, 12, 13 to E.C.E. and NSF grants GB 6730, GB 7966 to L.M.R.
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Enslee, E.C., Riddiford, L.M. Morphological effects of juvenile hormone mimics on embryonic development in the bug,Pyrrhocoris apterus . Wilhelm Roux' Archiv 181, 163–181 (1977). https://doi.org/10.1007/BF00848440
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DOI: https://doi.org/10.1007/BF00848440