Open AccessOn the XO sex chromosome system of Aulacoscelis melanocera Stal (Aulacoscelinae: Chrysomelidae: Coleoptera)
Author(s) -
SANTIAGOBLAY JORGE A.,
VIRKKI NIILO
Publication year - 1989
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.1601-5223.1989.tb00383.x
Subject(s) - biology , subfamily , chromosome , nucleolus , leaf beetle , zoology , genetics , botany , gene , larva , cytoplasm
Aulascoscelinae, a small, neotropical subfamily of Chrysomelidae (Coleoptera), is almost unknown cytologi‐cally. Although most male Aulacoscelis melanocera have 11+XO meioformula (corresponding to 2n = 23; X), with “nucleolus” attached to X, one male exhibited a condition best interpreted as ll + Xy p , with an unstable sex chromosome association.