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- Title
Rapid Cold Hardening Confers a Transient Increase in Low Temperature Survival in Diapausing Chilo suppressalis Larvae.
- Authors
Yang, Guangping; Wen, Jihui; Han, Yongqiang; Hou, Maolin
- Abstract
The striped stem borer, <italic>Chilo suppressalis</italic> (Walker), overwinters as a diapausing larva. The diapausing larvae were tested for a rapid cold hardening (RCH) response and its role in the insect’s survival of sub-zero temperatures. When laboratory-reared diapausing larvae were transferred directly from the rearing temperature of 25 °C to −14 °C and maintained there for 2 h, 21% survived. Acclimation of diapausing larvae for 4 h at 5 °C before their exposure for 2 h to −14 °C increased survival to approximately 41%, indicating an RCH response. Durability of RCH effects on low temperature survival was less than 1 h. Although transient in the test, the increased survival acquired through rapid cold hardening may play a role in preparing the diapausing larvae for abrupt temperature drops in the field that would otherwise be lethal.
- Subjects
STEM borers; CHILO suppressalis; INSECT larvae; EFFECT of cold on insects; PLANT diseases
- Publication
Insects (2075-4450), 2018, Vol 9, Issue 2, p53
- ISSN
2075-4450
- Publication type
Article
- DOI
10.3390/insects9020053