WINTER INVERTEBRATE & HERPTILES FIELD DAY

RETURN TO SYLLABUS


(Schedules etc. subject to modification)


8:30-9.00 a – Lecture -  Invertebrate Winter Ecology

 
 
Readings Insects and Herptiles –
  • LC "The Cold-Blooded Gamble" = p.120-134 (3rd ed: p.125-141).  This section covers 'cold-blooded animals' including both insects and herptiles
  • A different treatment is in WEH: Chapter 3: p.177-182 = section on insects
  • Snow arthropods:  The Beacon 10(3):7 Spring 2006 (CAIC) (pdf, 330k)
Lesson points
  • What is the key critical thing that must not happen for insects under cold conditions?
    • How is that different from the key threat for mammals and birds (as homeotherms) under cold conditions?
  • If both insects and plants are generally at ambient temperatures - what additional concerns are there for insects in regards to intercellular freezing?
  • What are the 2 general strategies that insects have for dealing with freezing temperatures?
    • What are key adaptations for each strategy? (Morphological, physiological, behavioral)
    • How is it that some of these adaptations are shared by these 2 strategies even thought the strategies are opposite (incompatible) in their goals?
    • Under what environmental conditions might each strategy be found (explain why)?
Other resources
  • Guide to Insect Orders (pdf, 2.5M)






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rev.  17 Fb 23