Natural Selection: experimental evidence. Do Tephritid flies mimic jumping spiders? Zonosemata.
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Natural Selection: experimental evidence
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Transcript of Natural Selection: experimental evidence. Do Tephritid flies mimic jumping spiders? Zonosemata.
Coevolution
• Two or more species.• Change in one species serves as a selector for
change in the other species.• Interplay of changing gene frequencies.• Parallel evolutionary paths.
A famous Müllerian mimicrycomplex.
Each species withsubspecies defined bycolor pattern and geography.
What happens at subspecificboundaries?
A mimetic system
Batesian and MüllerianMimicry
Aposematic coloration
Parallel geographic variation
Micrurus 6 species. Highly venomousFixed front fangsNeotropicalElapidae
Pliocercus 1 or 2 species.Mildly venomousFixed rear fangsColubridae