We estimated recombination rates between 312 loci and their centromeres in
gynogenetic diploid pink salmon (Oncorhynchus gorbuscha) that we produced b
y initiating development with irradiated sperm and blocking the maternal se
cond meiotic division. Amplified fragment length polymorphisms (AFLPs) were
significantly more centromeric than loci identified by three other techniq
ues (allozymes, microsatellites, and PCR using primer sequences from inters
persed nuclear elements). The near absence of AFLPs in distal regions could
limit their utility in constructing linkage maps. A large proportion of lo
ci had frequency of second division segregation (y) values approaching 1.0,
indicating near complete crossover interference on many chromosome arms. A
s predicted from models of chromosomal evolution in salmonids based upon re
sults with allozyme loci, all duplicated microsatellite loci that shared al
leles (isoloci) had y values of nearly 1.0.