This is a message from the Museumpests List. To post to this list send it as an email to [email protected] To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Ryan,
in "lower" subterranean termites colonies as Reticulitermes spp. or Coptotermes spp. more than 80 % ! are immature larvae. These colony members will molt form time to time, approx. 10 % in Reticulitermes and a little more in Coptotermes are soldiers but also still able to molt if induced. Seems a good idea to disturb colony structure by baiting combined with a chitin synthesis inhibitor. An important problem is how to reach enough "worker" larvae to distribute the inhibitor in a suitable concentration. It's not that simple to create attractiveness in termites baiting. In their social life, termites tend to avoid food resources when colony members die of. Best, Bill -- Bill Landsberger FB Biology / IPM-Coordination Rathgen Research Laboratory, National Museums Berlin - Prussian Cultural Heritage Foundation, Schloßstraße 1A, 14059 Berlin, Germany Fon +49 (0)30 266 4271 40 Fax +49 (0)30 266 4271 10 [email protected] www.smb.museum/rf ________________________________ Von: [email protected] [mailto:[email protected]] Im Auftrag von Jones, Robert (Ryan) Gesendet: Mittwoch, 9. Januar 2013 21:33 An: [email protected] Betreff: [pestlist] Termite Colony Group, Happy New Year! As part of CWF's annual recertification course, we spend time each winter pulling together power point segments for the training of various personnel. The preparation for this presentation (in conjunction with a couple of other projects) has led me to look closely at termite control methods. In doing so, I came across a tidbit that I can't seem to verify as truth or speculation. The concept is thus: At any given moment, a subterranean termite colony has a populace of immature workers that amounts to about 20% of the total head count. As a result, baits containing chitin inhibitors that disrupt the molting process would have a limited effect on the decline of a termite colony (because soldiers and reproductive do not molt and the mature workers are not affected). Does anyone have an opinion on whether 20% is a reasonable estimate for the ratio of immature workers in a subterranean termite colony... or do you think such a percentage is completely impossible to guess at? Thanks in advance for your help, Ryan Jones Integrated Pest Management Specialist [Colonial_Williamsburg_Logo.jpg] P.O. Box 1776 Williamsburg, VA 23187 (757) 220-7080 [email protected]<mailto:[email protected]> ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected]
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