phylogenetic relationships within the Arachnida

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phylogenetic relationships within the Arachnida

• Claudia Flores

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Acari

• Panonychus ulmi
• known as Red little spider of the fertile ones
  and the grapevine
• Includes mites and ticks

• http//www.ensam.inra.fr/CBGP/spmweb/gallery.php?g
  allerygallery

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Scorpiones

• Centruroides limpidus
• Mexican scorpion

• reptilworldsite.blogspot.com

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Araneae

• Ornithoctonus huwena
• Common name-Chinese bird spider

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Solifugae

• Eremobates cf. palpisetulosus
• Also known as sun spiders

• http//www.solpugid.com/eremobates.htm

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Amblypygi

• Damon diadema
• Tanzanian giant tailless whip scorpion

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Thelyphonida

• Mastigoproctus giganteus
• Called the giant whip scorpion

• http//museum.utep.edu/chih/theland/animals/invert
  ebrates/uropygi/mastigoproctusgiganteus.htm

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Nearest ingroup

• Merostomata (horse
• shoe crabs)
• http//en.wikipedia.org/wiki/FileXiphosura
  .jpg

• Include
• Xiphosura
• Species within Limulidae Limulus polyphemus which
  is the Atlantic Horseshoe Crab

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Phylogentic Relationship

• Phylogeny of the Chelicerata
• http//en.wikipedia.org/wiki/Arachnida

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Studies used in Arachnida

• Mitochondrial genomes that have been sequenced
  from arachnids
• RNA secondary structure data are used in
  phylogenetic analyses
• isolation of numerous scorpion toxins
• cDNA-based gene cloning

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Questions Remaining.

• Are whipscorpions more closely related to
  scorpions?
• Are ticks more closely related to spiders or
  scorpions?

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References

• Fahrein, K et. The complete mitochondrial
  genome of Pseudocellus pearsei (Chelicerata
  Ricinulei) and a comparison of mitochondrial gene
  rearrangements in Arachnida BMC Genomics. 2007
  8 386. Published online 2007 October 25. doi
  10.1186, http//www.ncbi.nlm.nih.gov/pmc/articles/
  PMC2231378/?toolpmcentrez
• Schwartz, E F, et.Transcriptome analysis of the
  venom gland of the Mexican scorpion Hadrurus
  gertschi (Arachnida Scorpiones) BMC Genomics.
  2007 8 119. Published online 2007 May
  doihttp//www.ncbi.nlm.nih.gov/pmc/articles/PMC190
  4202/?toolpmcentrez
• Masta SE. Mitochondrial rRNA secondary
  structures and genome arrangements distinguish
  chelicerates Comparisons with a harvestman
  (Arachnida Opiliones Phalangium opilio). 2009
  Oct 1. pubmed.com
• http//en.wikipedia.org/wiki/ArachnidaSystematics
  
• http//www.ncbi.nlm.nih.gov/