Words similar to pisum
Example sentences for: pisum
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Presumably the same pathways are involved in both processes - it would be surprising if A. pisum were to have different sets of genes for the two modes of development.
Consequently, whilst A. pisum maintained at 0-4°C had regained temperature-dependent growth by day 49 (figure 7), it would not normally be exposed to warmer conditions until the following spring, approximately 150 days later.
Once winter has commenced, diapause ends and the insect enters post-diapause quiescence, relying on persistent low temperatures to maintain developmental arrest [ 27 ] . This appears to be the case in A. pisum . The aphid clone used for the experiment would normally oviposit in mid-October, when the average daily temperature is 9°C with a maximum of 15°C [ 32 ] . By day 28 the embryos would be exposed to average daily temperatures of 3°C.
Diapause typically involves as a period of developmental arrest during which an insect is resistant to environmental influences on developmental progression [ 2 ] . Sexually-produced A. pisum embryos do not demonstrate developmental arrest.
The finding that A. pisum embryos maintained at 16°C showed considerable malformation may be a consequence of surpassing the normal thermal limits of developmental regulation.