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LAB RESEARCH (past&present)
John Byers and Collaborators

Bark Beetle Physiology and Behavior:
1. Flight take-off
Flight chambers
2. Circadian rhythms
3. Stridulation
4. Attraction to pheromones in lab

Pheromone Biosynthesis:
1. Effect of mating
Female Ips paraconfusus with rainbow-colored stridulatory organ
2. Myrcene to ipsdienol in D. brevicomis
3. Pheromone in Ips paraconfusus
4. Pheromone in Dendroctonus brevicomis

Pheromone Isolation:
1. Pityogenes chalcographus
Male Pityogenes chalcographus looking for place to bore into bark of Norway spruce
2. Ips duplicatus
3. Tomicus piniperda
4. Subtractive bioassay

Host/Mate Finding Models:
1. Mate finding on bark & models
2. Host tree finding
3. Wind-aided dispersal

Competition and Spacing of Attacks:
1. MAD analysis
2. Dirichlet tessellation
3. Dirichlet II
4. Density analysis

under construction Under construction
Plant Galls:
1. normal pinyon needle

2. magnified normal needle

3. collected galls
4. pinyon pine galls
5. theories of galled tissue

Nematodes:
1. aggregating on resistor

2. aggregating over wax moth

3. swimming in India ink

Images © 1997 by John A. Byers, Chemical Ecology.
Research supported by grants from Sweden's SJFR (Skogs- och Jordbrukets Forskningsråd = Forest and Agricultural Research Council).