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--Apple-Mail=_26903F11-7221-488E-BA5E-3617FC09C0D4 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 THANKS, JANET, from Jim et al. Begin forwarded message: > From: Janet M Eaton <jmeaton@ns.sympatico.ca> > Subject: Hemlock tree-destroying pest arrives in Nova Scotia > Date: November 9, 2017 at 8:22:48 AM AST > To: ENVLOC@eastlink.ca >=20 > = http://www.cbc.ca/news/canada/nova-scotia/hemlock-tree-woolly-adelgid-pest= -nova-scotia-1.4392723 >=20 > Hemlock tree-destroying pest arrives in Nova Scotia >=20 > Hemlock woolly adelgid has been found in 5 Nova Scotia counties > By Cassie Williams, CBC News Posted: Nov 08, 2017 12:35 PM AT Last = Updated: Nov 08, 2017 12:59 PM AT >=20 > The hemlock woolly adelgid appears as white, woolly sacks on the base = of needles of the hemlock tree. (CFIA) >=20 > A hemlock tree-destroying pest has turned up in Nova Scotia and don't = count on frosty temperatures to kill the tiny beasts. >=20 > The hemlock woolly adelgid attacks eastern hemlock trees by feeding on = the nutrient and water storage cells at the base of the trees' needles, = killing them. >=20 > Ron Neville, a plant health survey biologist with the Canadian Food = Inspection Agency, is investigating how far the pests have spread = throughout the province since they were first detected here in mid-July. >=20 > So far, the hemlock woolly adelgid =97 or HWA =97 has been found in = five counties: Digby, Yarmouth and Shelburne and a few sites in = Annapolis and Queens. >=20 > "In Digby and Yarmouth County, it's fairly widespread and less so in = Annapolis and Queens," Neville told CBC's Information Morning. >=20 > 'It looks like a small cotton ball' >=20 > The eastern hemlock grows from Ontario east to the Maritimes, often on = the shores of lakes and rivers. >=20 > "Loss of hemlock trees can have a potential, major ecological impact. = Hemlock in many forests serves as a foundation tree in the environment = so what that means is that other species that live in those areas depend = on hemlock for their existence," said Neville. >=20 > The tiny insect, less than 1.5 millimetres long, produces a wool-like = wax to protect its eggs, which are usually deposited on the underside of = hemlock needles at the tips of the branches. >=20 > hemlock woolly adelgid > The hemlock woolly adelgid can spread on the wind or by birds or = animals. They often hitch rides on nursery stock and wood products like = firewood. (CFIA) >=20 > "It's very tiny, it looks like a small cotton ball. And those develop = over the winter and they're most obvious, basically, from January = through to June," said Neville. >=20 > The pests are native to Asia and Neville said it's believed they first = arrived in North America in the 1950s in the state of Virginia, = spreading across the northeastern U.S. >=20 > Able to adapt to cold climates >=20 > The CFIA already has rules demanding that hemlock seedlings or wood = products being imported to Canada must have a certificate showing they = are free of the pest. The insects often hitch a ride on nursery stock = and wood products like firewood. >=20 > They can also be transported by birds, animals and even on the wind. >=20 > Hemlock trees under threat by invasive pest, the woolly adelgid > The hemlock pest also very adaptable, able to survive cold winters as = well as warm ones, according to Natural Resources Canada. >=20 > In terms of what to do about the pests, Neville said the CFIA is = looking at what our neighbours to the south have done. >=20 > One option is to just remove affected trees but that could have a = devastating effect on forests. >=20 > Hemlock > As its name implies, the aphid-like hemlock woolly adelgid attacks = eastern hemlock trees. (CFIA) >=20 > In parts of the U.S., forestry officials have attempted to control the = spread using biological controls including importing lady beetles from = Asia to eat HWAs. However, Neville cautions that introducing a new = species into an ecosystem can bring about a whole new set of problems. >=20 > "We have to consider the implications of bringing in a predator pest," = he said. >=20 > If you think you have an HWA infestation, check with the Canadian Food = Inspection Agency or call 1-800-442-2342. >=20 > With files from Information Morning --Apple-Mail=_26903F11-7221-488E-BA5E-3617FC09C0D4 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dwindows-1252"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space;">THANKS, JANET, from Jim et = al.<br><div><br><div>Begin forwarded message:</div><br = class=3D"Apple-interchange-newline"><blockquote type=3D"cite"><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px;"><span style=3D"font-family:'Helvetica'; color:rgba(0, = 0, 0, 1.0);"><b>From: </b></span><span = style=3D"font-family:'Helvetica';">Janet M Eaton <<a = href=3D"mailto:jmeaton@ns.sympatico.ca">jmeaton@ns.sympatico.ca</a>><br= ></span></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px;"><span = style=3D"font-family:'Helvetica'; color:rgba(0, 0, 0, 1.0);"><b>Subject: = </b></span><span style=3D"font-family:'Helvetica';"><b>Hemlock = tree-destroying pest arrives in Nova Scotia</b><br></span></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px;"><span style=3D"font-family:'Helvetica'; color:rgba(0, = 0, 0, 1.0);"><b>Date: </b></span><span = style=3D"font-family:'Helvetica';">November 9, 2017 at 8:22:48 AM = AST<br></span></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px;"><span = style=3D"font-family:'Helvetica'; color:rgba(0, 0, 0, 1.0);"><b>To: = </b></span><span style=3D"font-family:'Helvetica';"><a = href=3D"mailto:ENVLOC@eastlink.ca">ENVLOC@eastlink.ca</a><br></span></div>= <br><div> <title></title> <meta http-equiv=3D"content-type" content=3D"text/html;charset=3Dutf-8"> <meta http-equiv=3D"Content-Style-Type" content=3D"text/css"> <div> <div align=3D"left"><font face=3D"Arial" size=3D"2"><span style=3D" = font-size:10pt"><a = href=3D"http://www.cbc.ca/news/canada/nova-scotia/hemlock-tree-woolly-adel= gid-pest-nova-scotia-1.4392723">http://www