Difference between revisions of "Why did insects win?"
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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. | ||
| + | |||
| + | * Sea scorpions ({{en|Eurypterida}}) gills were in the ''tail''; also no polyramous limbs? | ||
| + | |||
| + | * [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==== | ||
| − | * [http://www.imbb.forth.gr/people/averof/Nature95.pdf 1995 landmark paper | + | * [http://www.imbb.forth.gr/people/averof/Nature95.pdf 1995 landmark paper] on crustacean Hox genes vs insect Hox genes, enlightening |
* [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/97/9/4438.full Review] on PNAS on Hox and arthropoda body plan | ||
===Evolution of insect flight=== | ===Evolution of insect flight=== | ||
| − | Wings as primitive tracheal gills: {{en|Evolution_of_insects#Origin_of_insect_flight}} | + | * Wings as primitive tracheal gills: {{en|Evolution_of_insects#Origin_of_insect_flight}} |
| + | * There is molecular evidence: [http://www.imbb.forth.gr/people/averof/Nature97w.pdf 1997 Nature], as well as confirming Pancrustacea. | ||
| + | * Recent [http://onlinelibrary.wiley.com/doi/10.1111/j.1525-142X.2010.00402.x/abstract details of molecular mechanism of evolution] | ||
| + | * Apterygote insects [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2781901/ still want to fly]. | ||
===Evolution of metamorphosis=== | ===Evolution of metamorphosis=== | ||
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==Hypothesis== | ==Hypothesis== | ||
* The Pancrustacea hypothesis is intriguing because Crustaceans show also considerable diversity. Clades away from Pancrustaceans show less diversity? Measurement of morphological characters? | * 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 | ||
[[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