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22SocInsects - Announcements D e a d lin e s In s e c t c o...

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1 Announcements • Deadlines – Insect collection May 14 (morning) – Field Journal May 14 (morning) – Lab notebook due at Final Exam Extra time for collection – Today from 12:00-1:30 – Tuesday a.m. 9:30-11:30 Need quiz 2 scores, version in spreadsheet file missing Aggregations as subsocial behavior – food exploitation • bark beetles – roosting • Aposematism –monarch butterflies –ladybird beetles – chemical defenses –Sawflies – parental care Subsocial Aphids and Thrips • Aphids Behavioral and morphological differences – Soldiers All first instar molt into normal feeding individuals Reproduction delayed if molt is delayed Special caste of soldiers Gall making Thrips Dispersers & soldiers in colony in gall Soldiers defend gall against other thrip species and usually reproduce less than dispersers http://www.aist.go.jp/aist_e/latest_research/2004/20040803/20040803.html Soldiers injecting venom into predatory lacewing larva Pictures from Michael Schwarz lab in Australia
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