Open AccessMicromanipulation reveals an XO‐XX sex determining system in the orb‐weaving spider Neoscona arabesca (Walckenaer)
Author(s) -
DOAN RYAN N.,
PALIULIS LEOCADIA V.
Publication year - 2009
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.2009.02123.x
Subject(s) - biology , orb (optics) , karyotype , autosome , spider , weaving , chromosome , zoology , genetics , gene , artificial intelligence , computer science , image (mathematics)
Karyotypes can be difficult to create due to odd chromosome behaviors and high levels of adhesion between sex chromosomes. We have used live‐cell imaging and micromanipulation to determine precisely the karyotype of the orb‐weaving spider Neoscona arabesca (Walckenaer). We have found that N. arabesca has a sex determination mechanism of XO (male)‐XX (female) with 2n = 20 autosomes. Staining of female tissues revealed a chromosome number of 22 in mitotic cells.