Difference between revisions of "Why did insects win?"

(Hypothesis)
(more on insect flight)
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===Evolution of insect flight===
 
===Evolution of insect flight===
Wings as primitive tracheal gills: {{en|Evolution_of_insects#Origin_of_insect_flight}}
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* Wings as primitive tracheal gills: {{en|Evolution_of_insects#Origin_of_insect_flight}}
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* There is molecular evidence: [http://www.imbb.forth.gr/people/averof/Nature97w.pdf 1997 Nature], as well as confirming Pancrustacea.
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* Recent [http://onlinelibrary.wiley.com/doi/10.1111/j.1525-142X.2010.00402.x/abstract details of molecular mechanism of evolution]
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* Apterygote insects [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2781901/ still want to fly].
  
 
===Evolution of metamorphosis===
 
===Evolution of metamorphosis===

Revision as of 09:43, 24 November 2010

It basically starts from this blog post. The question is: why are Insecta the most diverse group of arthropods, if not of living beings, on Earth's land, while Arachnida and other arthropod groups aren't?

Here I collect some material for further posts on the subject.

Sources

Evolution of Arthropoda

  • Marine evolution of Arachnida: "The oldest known scorpions lived around 430 million years ago in the Silurian period, on the bottom of shallow tropical seas.[15] These first scorpions had gills instead of the present forms' book lungs." ( Scorpion )

Genes in evolution of arthropod body plans

Evolution of insect flight

Evolution of metamorphosis

  • "The evolution of complete metamorphosis in insects is a key innovation that has led to the successful diversification of holometabolous insects," Suzuki et al. (molecular biology of pupa)


Hypothesis

  • The Pancrustacea hypothesis is intriguing because Crustaceans show also considerable diversity. Clades away from Pancrustaceans show less diversity? Measurement of morphological characters?
  • gg :
  • segmentation difference
  • compound vs single eye