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List: western_monarchs
Date: Wed, 4 Oct 2017 19:28:05 +0000 (UTC)
From: Donald Davis <donald_davis...> [western_monarchs] <western_monarchs...>
Subject: Re: [western_monarchs] Permanent Marker Destroys Monarch Wings

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Interesting passage on using marker pen inks on fruit flies:=20
"Marker pen ink is inexpensive, clearly identifiable on recapture, and, has=
no relevant effect on the longevity of three species of Drosophilidae (D. =
simulans, D. malerkotliana, and Z. indianus). Since this material allows ma=
rking a higher number of individuals, does not impregnate sense organs thro=
ughout the body and is more persistent on the insect, we suggest its use fo=
r individual-based studies, long-term studies, and those in which sense org=
ans are determinants for trustworthy results."

http://www.ou.edu/journals/dis/DIS92/Doge%20123.pdf
Paul's comments are accurate with regard to the extensive use of felt tip m=
arkers by a number of monarch programs over many years.=20

While I did ask some questions, a better question would have been: "What cl=
ear evidence exists that Sharpie markers do harm monarchs in light of their=
extensive use over many years in research projects and other studies?"=20
Don Davis
Toronto, Ontario, Canada



=20

On Wednesday, October 4, 2017, 2:04:42 PM EDT, Paul Cherubini monarch@s=
aber.net [western_monarchs] <western_monarchs...> wrote:=20=20
=20
=C2=A0=20=20=20



https://flic.kr/s/aHsm6jFXsG

These are before and after photos,=20

Those are not before and after photos of the same butterflybecause the top =
one is a male, bottom one a female.
Monarch Alert and Monarch Program researchers used sharpie=C2=A0permanent m=
arkers on overwintering monarchs for years without=C2=A0a wing hole problem=
that I have seen or heard about. Perhaps just=C2=A0newly emerged monarchs =
are susceptible to wing damage?
Paul CherubiniEl Dorado, Calif.=20=20=20=20
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<div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div><div>Interesting passage on using marker pen inks on fruit flies: </div><div><br></div><div><div style="font-size: 20px; font-family: serif;">"Marker pen ink is inexpensive, clearly identifiable on recapture, and, has no relevant effect on </div><div style="font-size: 20px; font-family: serif;">the longevity of three species of Drosophilidae (D. simulans, D. malerkotliana, and Z. indianus). Since this material allows marking a higher number of individuals, does not impregnate sense organs throughout the body and is more persistent on the insect, we suggest its use for individual-based studies, long-term studies, and those in which sense organs are determinants for trustworthy results."<br></div></div><div><p class="ydpe9db41d1MsoNormal"><a href="http://www.ou.edu/journals/dis/DIS92/Doge%20123.pdf" rel="nofollow" target="_blank">http://www.ou.edu/journals/dis/DIS92/Doge%20123.pdf</a></p>

<div>Paul's comments are accurate with regard to the extensive use of felt tip markers by a number of monarch programs over many years. <br></div><div class="ydpe9db41d1MsoNormal"><div><span><br></span></div><div><span>While I did ask some questions, a better question would have been: "What clear evidence exists that Sharpie markers do harm monarchs in light of their extensive use over many years in research projects and other studies?"</span></div></div>





</div><div class="ydpb214d987signature"><div><b><span style="font-size:24.0pt;color:#C00000;" lang="EN-CA"></span></b><b><span style="font-size:24.0pt;color:#C00000;" lang="EN-CA"> </span></b><b><span style="font-size:24.0pt;color:#C00000;" lang="EN-CA"></span></b>

<p class="ydpb214d987MsoNormal"><b><span style="font-size:24.0pt;color:#C00000;" lang="EN-CA">Don Davis</span></b></p>

<font size="3"><font face="Times New Roman"><b>Toronto, Ontario, Canada<br></b></font></font><br><img src="http://bestanimations.com/Animals/Insects/Butterflys/animatedbutterfly-7.gif" alt="butterfly animation" width="433" border="0" height="52"><br><br></div></div></div>
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On Wednesday, October 4, 2017, 2:04:42 PM EDT, Paul Cherubini <monarch...> [western_monarchs] &lt;<western_monarchs...>&gt; wrote:
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<p><br class="ydp39452d5eyiv6724916739class" clear="none"></p><div><blockquote class="ydp39452d5eyiv6724916739class" type="cite"><div class="ydp39452d5eyiv6724916739class"><a shape="rect" class="ydp39452d5eyiv6724916739class" href="https://flic.kr/s/aHsm6jFXsG" rel="nofollow" target="_blank">https://flic.kr/s/aHsm6jFXsG</a></div></blockquote><blockquote class="ydp39452d5eyiv6724916739class" type="cite"><div class="ydp39452d5eyiv6724916739class">These are before and after photos, </div></blockquote><div><br class="ydp39452d5eyiv6724916739class" clear="none"></div>Those are not before and after photos of the same butterfly</div><div>because the top one is a male, bottom one a female.</div><div><br class="ydp39452d5eyiv6724916739class" clear="none"></div><div>Monarch Alert and Monarch Program researchers used sharpie&nbsp;</div><div>permanent markers on overwintering monarchs for years without&nbsp;</div><div>a wing hole problem that I have seen or heard about. Perhaps just&nbsp;</div><div>newly emerged monarchs are susceptible to wing damage?</div><div><br class="ydp39452d5eyiv6724916739class" clear="none"></div><div>Paul Cherubini</div><div>El Dorado, Calif.</div>

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