Abstract
The newly emerged adult females of Schistocerca gregaria were separated and kept in the rearing conditions without males to examine the detailed developmental characteristic of the no mating females and carefully observed the developmental progress of non-fertilised eggs laid by virgin females. The results showed that the females kept without males survived in average 43 d, i.e. 58% of the life span of mated controls, and laid correspondingly fewer egg pods. The size of egg batches, the weight of eggs, and their content of ecdysteroids were normal but the hatch rate was reduced to 18.27%. Blocks of early embryogenesis (58.43%) and hatching failures (23.29%) were the major causes of death. Moreover, most of the hatched insects died during the postembryonic development and only a few females reached the adult stage. All insects that developed until the penultimate or last larval instar or reached the adult stage were females.
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Wang, F., Sehnal, F. Effects of no mating on the female adults and embryonic development of Schistocerca gregaria (Orthoptera: Acrididae). Chin. Sci. Bull. 58, 3244–3247 (2013). https://doi.org/10.1007/s11434-013-5867-2
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DOI: https://doi.org/10.1007/s11434-013-5867-2