[NatureNS] Dead Mackerel

From: David & Alison Webster <dwebster@glinx.com>
To: naturens@chebucto.ns.ca
References: <125733578.683407.1421788296205.open-xchange@webmail.bellaliant.net>
Date: Wed, 21 Jan 2015 14:22:06 -0400
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Original-Recipient: rfc822;"| (cd /csuite/info/Environment/FNSN/MList; /csuite/lib/arch2html)"

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Hi All,
    We recently had wind chills of -23 C. This account from Norway =
reports fish flash frozen when air temperature was -7.8 C.
http://www.businessinsider.com/thousands-of-fish-freeze-in-norway-bay-201=
4-1

    I suspect that a sudden chill, caused by swimming into very cold =
water, can slow metabolism to near zero, leading to loss of mobility, =
and those which wash ashore then really do freeze; a fish version of =
hypothermia.

    Some 15 to 20 years ago I received a complementary copy of some =
Outdoors magazine which contained an article about frozen fish washing =
ashore in large numbers on several beaches in Newfoundland. So I had a =
good laugh but now see that this may not have been a joke article after =
all.=20

Yt, Dave Webster, Kentville
=20
   =20
  ----- Original Message -----=20
  From: rita.paul@ns.sympatico.ca=20
  To: naturens@chebucto.ns.ca=20
  Sent: Wednesday, January 21, 2015 12:37 PM
  Subject: RE: [NatureNS] Dead Mackerel


  I think Fritz "Chilled to Death" would be more accurate description=20
  rather than "Froze to Death" . People often say "I'm froze to Death"=20
  but they are still walking. Anyone froze to death will not say so!=20
  A couple of years ago Striped Bass in Pictou Harbour chilled to death=20
  and if I remember it had something to do with the discharge from the =
Power Plant.=20
  In the good old days when we would fish trout or smelts through the =
ice=20
  and took the catch home to eat, they would come to life in the warm =
water in the sink.=20
  That was fresh fish!=20
  Enjoy the winter=20
  Paul=20
    On January 21, 2015 at 10:44 AM Fritz McEvoy =
<fritzmcevoy@hotmail.com> wrote:=20


    Hi All,=20
        I don't have any more knowledge than the person interviewed in =
the CBP article but the idea that the mackerel froze to death seems a =
bit strange to me. Winter's onset this year has been about average to =
date, so far as I can tell. Also it's a big lake; there should be parts =
where they could swim to that would be warmer? Why is it only mackerel =
that died? Wouldn't other species freeze to death if that was indeed the =
cause of death? Are there any other instances of this happening (fish =
freezing to death), in the Bras-dOr-Lakes or any large open bodies of =
water in the Maritimes? All the best.=20
                                                   Fritz McEvoy=20
                                                    Sunrise Valley, CB =
(near Dingwall)=20
     =20
     =20

    > Subject: Re: [NatureNS] Dead Mackerel=20
    > From: nancypdowd@gmail.com=20
    > Date: Wed, 21 Jan 2015 09:52:01 -0400=20
    > To: naturens@chebucto.ns.ca=20
    >=20
    > Here is a possible explanation:=20
    >=20
    > =
http://m.capebretonpost.com/News/Local/2015-01-20/article-4014430/Mackere=
l-likely-froze-to-death-in-Bras-dOr-Lake:-ecologist/1=20
    >=20
    > The very sudden onset of winter probably affected a lot of things =
this winter.=20
    >=20
    > Nancy=20
    >=20
    > Sent from my iPhone=20
    >=20
    > > On Jan 20, 2015, at 5:11 PM, "rita.paul@ns.sympatico.ca" =
<rita.paul@ns.sympatico.ca> wrote:=20
    > >=20
    > > Hi All=20
    > > There seems to be reports of a number of dead mackerel in the =
Bras d'Or=20
    > > Lakes. Near Ben Eoen but scattered around the lake.=20
    > > I don't know much about it so has anyone more up to date info?=20
    > > No doubt it would attract a lot of birds.=20
    > > Birders might see some interesting birds.=20
    > > Paul=20

   =20
  No virus found in this message.
  Checked by AVG - www.avg.com
  Version: 2015.0.5645 / Virus Database: 4260/8970 - Release Date: =
01/21/15

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<BODY bgColor=3D#ffffff>
<DIV>Hi All,</DIV>
<DIV>&nbsp;&nbsp;&nbsp; We recently had wind chills of -23 C. This =
account from=20
Norway reports fish flash frozen when air temperature was -7.8 C.</DIV>
<DIV><A=20
href=3D"http://www.businessinsider.com/thousands-of-fish-freeze-in-norway=
-bay-2014-1">http://www.businessinsider.com/thousands-of-fish-freeze-in-n=
orway-bay-2014-1</A></DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp;&nbsp; I suspect that a sudden chill, caused by =
swimming into=20
very cold water,&nbsp;can slow metabolism to near zero,&nbsp;leading to=20
loss&nbsp;of mobility,&nbsp;and those which wash ashore then really do =
freeze;=20
a&nbsp;fish version of&nbsp;hypothermia.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp;&nbsp; Some 15 to 20 years ago I received a =
complementary copy=20
of some Outdoors magazine which contained an article about frozen fish =
washing=20
ashore in large numbers on several beaches in Newfoundland. So I had a =
good=20
laugh but now see that this may not have been a joke article after all. =
</DIV>
<DIV>&nbsp;</DIV>
<DIV>Yt, Dave Webster, Kentville</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp;&nbsp; </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"=20
dir=3Dltr>
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: =
black"><B>From:</B>=20
  <A title=3Drita.paul@ns.sympatico.ca=20
  =
href=3D"mailto:rita.paul@ns.sympatico.ca">rita.paul@ns.sympatico.ca</A> =
</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dnaturens@chebucto.ns.ca=20
  href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</A> =
</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, January 21, =
2015 12:37=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [NatureNS] Dead=20
  Mackerel</DIV>
  <DIV><BR></DIV>
  <DIV>I think Fritz "Chilled to Death" would be more accurate =
description=20
</DIV>
  <DIV>rather than "Froze to Death" . People often say "I'm froze to =
Death"=20
  </DIV>
  <DIV>but they are still walking. Anyone froze to death will not say =
so! </DIV>
  <DIV>A couple of years ago Striped Bass in Pictou Harbour chilled to =
death=20
  </DIV>
  <DIV>and if I remember it had something to do with the discharge from =
the=20
  Power Plant. </DIV>
  <DIV>In the good old days when we would fish trout or smelts through =
the ice=20
  </DIV>
  <DIV>and took the catch home to eat, they would come to life in the =
warm water=20
  in the sink. </DIV>
  <DIV>That was fresh fish! </DIV>
  <DIV>Enjoy the winter </DIV>
  <DIV>Paul </DIV>
  <BLOCKQUOTE=20
  style=3D"POSITION: relative; BORDER-LEFT: blue 1px solid; =
PADDING-LEFT: 10px; MARGIN-LEFT: 0px"=20
  type=3D"cite">On January 21, 2015 at 10:44 AM Fritz McEvoy=20
    &lt;fritzmcevoy@hotmail.com&gt; wrote: <BR><BR>
    <DIV dir=3Dltr>Hi All, <BR>&nbsp;&nbsp;&nbsp; I don't have any more =
knowledge=20
    than the person interviewed in the CBP article but the idea that the =

    mackerel froze to death seems a bit strange to me. Winter's =
onset&nbsp;this=20
    year has been about average to date, so far as I can tell. Also it's =
a big=20
    lake; there should be parts&nbsp;where they could swim to that would =
be=20
    warmer? Why is it only mackerel that died? Wouldn't other species =
freeze to=20
    death if that was indeed the cause of death?&nbsp;Are there any=20
    other&nbsp;instances of this happening (fish freezing to death), in =
the=20
    Bras-dOr-Lakes or any large open bodies of water in&nbsp;the =
Maritimes? All=20
    the best.=20
    =
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
    Fritz McEvoy=20
    =
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
    Sunrise Valley, CB (near Dingwall) <BR>&nbsp; <BR>&nbsp; <BR>
    <DIV>&gt; Subject: Re: [NatureNS] Dead Mackerel <BR>&gt; From:=20
    nancypdowd@gmail.com <BR>&gt; Date: Wed, 21 Jan 2015 09:52:01 -0400 =
<BR>&gt;=20
    To: naturens@chebucto.ns.ca <BR>&gt; <BR>&gt; Here is a possible=20
    explanation: <BR>&gt; <BR>&gt;=20
    =
http://m.capebretonpost.com/News/Local/2015-01-20/article-4014430/Mackere=
l-likely-froze-to-death-in-Bras-dOr-Lake:-ecologist/1=20
    <BR>&gt; <BR>&gt; The very sudden onset of winter probably affected =
a lot of=20
    things this winter. <BR>&gt; <BR>&gt; Nancy <BR>&gt; <BR>&gt; Sent =
from my=20
    iPhone <BR>&gt; <BR>&gt; &gt; On Jan 20, 2015, at 5:11 PM,=20
    "rita.paul@ns.sympatico.ca" &lt;rita.paul@ns.sympatico.ca&gt; wrote: =

    <BR>&gt; &gt; <BR>&gt; &gt; Hi All <BR>&gt; &gt; There seems to be =
reports=20
    of a number of dead mackerel in the Bras d'Or <BR>&gt; &gt; Lakes. =
Near Ben=20
    Eoen but scattered around the lake. <BR>&gt; &gt; I don't know much =
about it=20
    so has anyone more up to date info? <BR>&gt; &gt; No doubt it would =
attract=20
    a lot of birds. <BR>&gt; &gt; Birders might see some interesting =
birds.=20
    <BR>&gt; &gt; Paul </DIV></DIV></BLOCKQUOTE>
  <DIV><BR>&nbsp; </DIV><A></A>
  <P align=3Dleft color=3D"#000000" avgcert??>No virus found in this=20
  message.<BR>Checked by AVG - <A=20
  href=3D"http://www.avg.com">www.avg.com</A><BR>Version: 2015.0.5645 / =
Virus=20
  Database: 4260/8970 - Release Date: =
01/21/15</P></BLOCKQUOTE></BODY></HTML>

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