Difference between revisions of "Why did insects win?"
Devicerandom (Talk | contribs) (more on insect flight) |
Devicerandom (Talk | contribs) (→Genes in evolution of arthropod body plans) |
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* [http://gbe.oxfordjournals.org/content/2/425.abstract Rota-Stabelli et al. 2010], mitochondrial genomes from several arthropoda, further Pancrustacea evidence. | * [http://gbe.oxfordjournals.org/content/2/425.abstract Rota-Stabelli et al. 2010], mitochondrial genomes from several arthropoda, further Pancrustacea evidence. | ||
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| + | * Sea scorpions ({{en|Eurypterida}}) gills were in the ''tail''; also no polyramous limbs? | ||
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| + | * [http://www.abdn.ac.uk/rhynie/euthy.htm Euthycarcinoids] are a group of primitive arthropods, possibly earliest land dwellers (see {{en|Euthycarcinoid}}). | ||
====Genes in evolution of arthropod body plans==== | ====Genes in evolution of arthropod body plans==== | ||
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* [http://www.ulb.tu-darmstadt.de/tocs/95254765.pdf Book] that sounds extremly interesting. | * [http://www.ulb.tu-darmstadt.de/tocs/95254765.pdf Book] that sounds extremly interesting. | ||
* [http://www.pnas.org/content/95/18/10671.short Chelicerate hox] | * [http://www.pnas.org/content/95/18/10671.short Chelicerate hox] | ||
| + | * [http://www.pnas.org/content/97/9/4438.full Review] on PNAS on Hox and arthropoda body plan | ||
===Evolution of insect flight=== | ===Evolution of insect flight=== | ||
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:* segmentation difference | :* segmentation difference | ||
:* compound vs single eye | :* compound vs single eye | ||
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| + | ===Wings problem=== | ||
| + | * It seems that wings arose from pre-crustacean gills. Arachnida precursors (eurypterids?) had no comparable structure to transform into wings. That's why we don't see flying spiders. | ||
| + | |||
| + | ===Metamorphosis problem=== | ||
| + | todo | ||
[[Category:Hobby research]] | [[Category:Hobby research]] | ||
[[Category:Biology]] | [[Category:Biology]] | ||
Latest revision as of 11:02, 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.
Contents
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 )
- Recent evidence for Pancrustacea hypothesis based on nuclear genes phylogenies: Regier et al. 2010
- Rota-Stabelli et al. 2010, mitochondrial genomes from several arthropoda, further Pancrustacea evidence.
- Sea scorpions ( Eurypterida ) gills were in the tail; also no polyramous limbs?
- Euthycarcinoids are a group of primitive arthropods, possibly earliest land dwellers (see Euthycarcinoid ).
Genes in evolution of arthropod body plans
- 1995 landmark paper on crustacean Hox genes vs insect Hox genes, enlightening
- Book that sounds extremly interesting.
- Chelicerate hox
- Review on PNAS on Hox and arthropoda body plan
Evolution of insect flight
- Wings as primitive tracheal gills: Evolution_of_insects#Origin_of_insect_flight
- There is molecular evidence: 1997 Nature, as well as confirming Pancrustacea.
- Recent details of molecular mechanism of evolution
- Apterygote insects still want to fly.
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
Wings problem
- It seems that wings arose from pre-crustacean gills. Arachnida precursors (eurypterids?) had no comparable structure to transform into wings. That's why we don't see flying spiders.
Metamorphosis problem
todo