Abstract
Tadpole shrimps (Notostraca) occur sporadically in temporary ponds and their survival there depends largely upon the drought-resistant eggs they produce. Environmental conditions conducive to hatching of eggs ofLepidurus couesii were investigated in the laboratory. Almost all eggs hatched best at 20 °C, whether desiccated for a short or long period, with a prior freezing shock or without such a shock, with intact shells. Eggs that endured a longer period of desiccation and eggs with abraded shells displayed a more equivocal response to different temperatures for hatching. Long-term hatchability of eggs was demonstrated. Time required for successful hatching was shortest at 20 °C, with no discernible difference between 17 °C and 25 °C. Both short- and long-term survival of populations of the species appears to be fostered by the adaptive response to temperature shown by the eggs.
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© 1991 Springer Science+Business Media Dordrecht
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Hann, B.J., Lonsberry, B. (1991). Influence of temperature on hatching of eggs of Lepidurus couesii (Crustacea, Notostraca). In: Belk, D., Dumont, H.J., Munuswamy, N. (eds) Studies on Large Branchiopod Biology and Aquaculture. Developments in Hydrobiology, vol 64. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3366-1_8
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DOI: https://doi.org/10.1007/978-94-011-3366-1_8
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