Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Effect of sequential cold shocks on survival and molting incidence in Panstrongylus megistus (Burmeister) (Hemiptera, Reduviidae)|
|Abstract:||The survival and molting incidence were studied in the insect. Panstrongylus megistus, following sequential ci,ld shocks in which a milder shock at 0 or 5 degreesC for 1 h preceded a more severe shock (0 degreesC. 12 h). The shocks were separated by intervals of 8. 18. 24. and 72 h at 28 degreesC. The survival rate after sequential shocks was identical to that of unshocked controls. Cold-shock tolerance differed from heat-shock tolerance since the latter varied with the time between shocks and was much more transient. Sequential cold shocks produced a higher molting incidence when the first shock was given at 0 compared to 5 degreesC. This response was more rapid than that to sequential heat shocks. Cold-shock tolerance in P. megistus may involve heat-shock proteins, although other protective mechanisms may also occur concurrently. This is the first report of cold-shock tolerance in a bloodsucking sucking hemipteran. (C) 2001 Academic Press.|
|Editor:||Academic Press Inc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.