Live Asian Citrus Psyllids Found
In Dinuba Residential Area
By Patrick Cavanaugh, Editor
CDFA confirmed yesterday that two
traps from two young residential citrus trees on the southeast side of the city
limits of Dinuba (Tulare County), had one Asian Citrus Psyllid adult.
Immediately, inspectors went to the area where the traps had been hanging and found several live ACP adults along with live nymphs on a citrus tree two doors
down from where the trapped Psyllids were found.
Tom Tucker, Assistant Tulare
County Ag Commissioner, told California Ag
Today that this find is the most profound in the valley as live Psyllids
and nymphs have been observed, in fact too many to count. Many were
collected, and lab tests are being run to determine if they were carrying the
bacteria that causes huanglongbing (HLB),
a fatal citrus disease.
He noted that CDFA had a
treatment crew in the area late on Tuesday spraying the trees where the live
Psyllids were found.
Beth Grafton-Cardwell, Director of the UC Lindcove Research and Extension Center said, "The fact that
inspectors found live ACPs on the tree is very troubling as it shows a breeding
population. Because we see multiple life stages in the Dinuba area, it means
they have had multiple generations and most likely have been around for a few
months, and that means the adults could
have spread to 'who knows how far'."
“It appears that the young
trees may have been brought into the area from southern California citrus
areas which are under a heavy quarantine. People should not be moving citrus
material around the state. That message must get out,” Grafton-Cardwell said.
There is no commercial citrus
immediately nearby, but Tucker noted this will soon turn into a five-mile radius
quarantine that will stretch out into commercial citrus areas.
This comes after several
trapped adults were found near Porterville in early July, as well as one
trapped adult announced last week in Wasco (Kern County).
Tucker said that delimitation
traps will be put out within nine square miles of the Dinuba finds. “We need to
see if there are other Psyllids in the area and treat where necessary. These
traps will be checked weekly,” Tucker said.
"Right now, intensive spraying
will take place of all citrus trees within an 800-meter area around where the
trapped and live Psyllids were found,” said Tucker.
The ACP is an invasive species of grave concern because it
can carry the disease huanglongbing (HLB).
All citrus and closely related species are susceptible hosts for both
the insect and the disease. There is no
cure once a tree becomes infected. The
diseased tree will decline in health and produce bitter, misshaped fruit until
it dies. To date, HLB has been
detected on only one property in the Hacienda Heights neighborhood of Los Angeles County.
“We want to emphasize citrus fruit is safe to eat and the
disease is not harmful to human health,” said Tulare County Agricultural
Commissioner Marilyn Kinoshita. “The Asian Citrus Psyllid is another example of
the many invasive species that enter our state every year.”
Residents in the area who think they may have seen the pest
are urged to call the Pest Hotline at 1-800-491-1899 or the Tulare County
Agricultural Commissioner. For more
information on the Asian Citrus Psyllid and huanglongbing disease visit: http://www.cdfa.ca.gov/plant/acp/.
Labels: Asian Citrus Psyllids found in Dinuba, Beth Grafton-Cardwell, Huanglongbing, Live ACP Found in Dinuba, live adults and nymphs found, Marilyn Kinoshita, Tom Tucker, Trapped adults