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>>> http://nature1st.
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On the logical difficulty mentioned about genetic contamination being unlik=
ely, this was wrong because it=92s not occurring in the south-bound October=
migration.
Contamination is actually likely on the way north in the three or so genera=
tions it takes to get the monarchs out of Mexico via USA up into the north =
east. Well-intentioned people have been mass rearing commercial monarchs a=
nd then releasing them into populations migrating north at the start of the=
season: interbreeding of the commercial non-migrators with the wild migra=
tory stock is then entirely possible. This may damage overall migratory ab=
ility, may also have introduced parasites into the wild populations (as hap=
pened with bumblebees reared en masse commercially as pollinators), and is =
generally unhelpful for several reasons.
To read about the several perils of mass release of commercially derived mo=
narchs, there=92s an authoritative and salutary Journey North account by 10=
monarch specialists, =93Captive breeding and releasing monarchs=94 (2015).=
It=92s reference 20 of the Tenger-Trolander paper but is available as a P=
DF file so you don=92t need special access to read it:
https://journeynorth.org/tm/monarch/conservation_action_release.pdf
It supports small-scale breeding of commercial monarchs in schools etc for =
educational/social purposes, but not mass breeding/wild release.
---------------------------------------------------------
On Oct 20, 2019, at 7:39 AM, David Webster <dwebster@glinx.com<mailto:dwebs=
ter@glinx.com>> wrote:
Hi Nancy & All,
Absolute truth.
D W, Kentville.
On 10/20/2019 6:42 AM, nancy dowd wrote:
Lots to consider here. Habitat protection/enhancement is always key to spe=
cies survival.
NancyD
Sent from my iPad
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Content-ID: <61B2F7F46F590548B9C99825991982E1@CANPRD01.PROD.OUTLOOK.COM>
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
252">
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space;">
On the logical difficulty mentioned about genetic contamination being unlik=
ely, this was wrong because it=92s not occurring in the south-bound October=
migration.
<div><br>
</div>
<div>Contamination is actually likely on the way north in the three or so g=
enerations it takes to get the monarchs out of Mexico via USA up into the n=
orth east. Well-intentioned people have been mass rearing commercial =
monarchs and then releasing them into
populations migrating north at the start of the season: interbreedin=
g of the commercial non-migrators with the wild migratory stock is then ent=
irely possible. This may damage overall migratory ability, may also h=
ave introduced parasites into the wild populations
(as happened with bumblebees reared en masse commercially as pollinators),=
and is generally unhelpful for several reasons.
<div><br>
</div>
<div>To read about the several perils of mass release of commercially deriv=
ed monarchs, there=92s an authoritative and salutary Journey North account =
by 10 monarch specialists, =93Captive breeding and releasing monarchs=94 (2=
015). It=92s reference 20 of the Tenger-Trolander
paper but is available as a PDF file so you don=92t need special access to=
read it:</div>
<div><br>
</div>
<div><a href=3D"https://journeynorth.org/tm/monarch/conservation_action_rel=
ease.pdf">https://journeynorth.org/tm/monarch/conservation_action_release.p=
df</a> </div>
<div><br>
</div>
<div>It supports small-scale breeding of commercial monarchs in schools etc=
for educational/social purposes, but not mass breeding/wild release.</div>
<div> </div>
<div>--------------------------------------------------------- <br>
<br>
<div>
<div>On Oct 20, 2019, at 7:39 AM, David Webster <<a href=3D"mailto:dwebs=
ter@glinx.com">dwebster@glinx.com</a>> wrote:</div>
<blockquote type=3D"cite">
<div text=3D"#000000" bgcolor=3D"#FFFFFF">
<p>Hi Nancy & All,</p>
<p> Absolute truth.</p>
<p>D W, Kentville.<br>
</p>
<div class=3D"moz-cite-prefix">On 10/20/2019 6:42 AM, nancy dowd wrote:<br>
</div>
<blockquote type=3D"cite" cite=3D"mid:D6ABD489-B9FD-4391-A0CC-60E61C43473C@=
gmail.com">
Lots to consider here. Habitat protection/enhancement is always key t=
o species survival.
<div><br>
</div>
<div>NancyD<br>
<br>
<div dir=3D"ltr">Sent from my iPad</div>
<div dir=3D"ltr"><br>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</body>
</html>
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Index of Subjects