New Zealand Journal of Zoology
abstracts
Rhopalosiphum
aphids in New Zealand. I. RAPD markers reveal
limited variability in lineages of Rhopalosiphum
padi
S. R. Bulman
M. A. W. Stufkens
D. Nichol
S. J. Harcourt
A. L. Harrex*
D. A. J. Teulon†
New Zealand Institute for Crop
and Food Research Ltd
Private Bag 4704
Christchurch, New Zealand
*Present address: Oral Science
and Orthodontics, School of Dentistry, University of Otago, Dunedin,
New Zealand.
†Author for correspondence:
teulond@crop.cri.nz
Abstract Theoretical
studies have suggested that
New Zealand populations of Rhopalosiphum
padi should consist of
genetically separate lineages. We applied random amplified polymorphic
DNA (RAPD) PCR to genetic material of Rhopalosiphum
aphids
from cereal crops and pastures. Several putative R.
padi
lineages were detected by RAPD PCR in 1995 samples. Subsequent RAPD
analyses produced good evidence for the presence of distinct R.
padi
lineages in New Zealand but reduced the number of predominant lineages
to two and revealed low overall genetic variability. One aphid grouping
yielded substantially different RAPD patterns from the other aphids,
suggesting the presence of a cryptic New Zealand Rhopalosiphum
sp.
Keywords aphid;
Rhopalosiphum species;
R.
padi; lineages
Z03039; Received 12 November
2003; accepted 13 November 2004; Online
publication date 2 March 2005
New Zealand Journal of Zoology,
2005, Vol. 32: 29–36
0301–4223/05/3201–0029 © The Royal Society of New Zealand 2005
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