The Ixodes scapularis Wikel strain genome sequence is a joint effort between the Broad Institute and the J. Craig Venter Institute (JCVI). Assembly of the estimated 4x shotgun coverage was performed at the JCVI. The assembly presented here (IscaW1, 2008) consists of 369,492 supercontigs, totalling 1,76 Gigabases, with a supercontig N50 size of 72 Kb.

Genome Size (bp): 
Scaffold N50 (bp): 
9 957 213
Scaffold count: 
369 492
Release date: 
Monday, December 1, 2008


The Ixodes scapularis Wikel colony was established by Dr. S. Wikel (University of Connecticut Health Center) in 1996 using approximately 30 pairs of field collected adult male and female ticks from New York, Oklahoma and a Lyme disease endemic area of Connecticut. The colony has been continuously in-bred for approximatley twelve generations since establishment and has not been supplemented with field collected material. The colony is known to be a competent vector of various Borrelia burgdorferi (strains B31 and 297) and Babesia microti isolates. Dr. D.

Gene sets

24 Oct 2017
21 Feb 2017
22 Aug 2014
25 Feb 2014
3 May 2012

Assembly Specific Downloads

 Downloads for this assembly