I'm no entomologist, but my wife worked for Ron Prokopy for quite a
while. If it were just plums, I'd think eastern cherry fruit fly,
Rhagoletis cingulata, or maybe the black cherry fruit fly, Rhagoletis
fausta. The coincidental occurrence with apple maggot makes it
interesting. Maybe you're witnessing actual sympatric speciation in
progress! Or maybe basing species differentiation on wing patterns and/
or host selection is not particularly meaningful when it comes to
Rhagoletis.
In any event, from a management perspective, rather than an
evolutionary ecology slant, I'd recommend Baythroid or Asana sprays on
both plums and apples.
Good luck.
Dan
________________________________________________________
Daniel R. Cooley
Dept. of Plant, Soil & Insect Sci.
Fernald Hall 103
University of Massachusetts
Amherst, MA 01003
Office: 413-577-3803
Cell: 413-531-3383
dcoo...@microbio.umass.edu
FAX 413-545-2115
http://people.umass.edu/dcooley/
Office location: 103 Clark Hall
On Aug 31, 2009, at 11:50 AM, Los, Lorraine wrote:
Hello all,
I am working with a grower with a significant apple maggot problem
in part of his orchard. In addition to apples, maggots (fly larvae)
were also found in plums. This is the first time I have seen this.
I am assuming they are apple maggot. Can anyone help with the
following questions?
1) Do any other maggots infest plums?
2) There are peaches & nectarines adjacent to this area. I
have not seen any literature suggesting that apple maggots get into
peaches & nectarines, but want to be sure. Has anyone seen apple
maggots in peaches or nectarines at a heavily infested site?
We’ll definitely hang AM traps in the plums next year!!
Thanks,
Lorraine
Lorraine Los
Fruit Crops IPM Coordinator
Plant Science Department, U-4067
University of Connecticut
Storrs, CT 06269-4067
(860)486-6449 (Phone)
(860)486-0682 (Fax)
lorraine....@uconn.edu
