[NatureNS] Winter Insects

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From: c.majka@ns.sympatico.ca
Date: Mon, 12 Mar 2007 20:57:23 -0300
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Hi Angus and Paul,

P.P. Harper in the chapter on Stoneflies (Plecoptera) in Canada and  
its Insect Fauna (Danks 1978) records 15 species in Canada in the  
family Taeniopterigidae (the so-called "Winter Stonflies). They (and  
other stoneflies) are considered, as Paul points out, to be an  
important component on the diet of some species of fish. The larvae  
of winter stonflies are detritivores or herbivores, grazing on  
benthic algae. Some of the predatory species of stoneflies are  
thought to eat significant numbers of black fly larvae, so they are  
of double significance from the standpoint of humans! They are also  
important indicators of water quality since few species can thrive in  
waters which are warm, poorly oxygenated, silted, or polluted.

Best wishes,

Chris

On 12-Mar-07, at 8:10 PM, Paul MacDonald wrote:

> Hi Angus
> The family Taeniopterygidae is known to most anglers -
> dedicated fly anglers at least - as "Early Brown
> Stones". Eric Leiser and Robert Boyle in the book on
> the subject say there are about 30 members in the
> family. The nymphs are debris inhabitors rarely found
> in open water. They go on about techinical ids which
> sort of go over my head.
> Some authors say it is the most important trout food
> in our waters.
> I need get some tied up.
> Enjoy March
> Paul
>
> --- Angus MacLean <angusmcl@ns.sympatico.ca> wrote:
>
>> Since it was a nice sunny day (+5) I decided  to
>> look for some snow
>> creatures. No luck but did come on this creature
>> (two pics) on a wet
>> section of a path.
>>
>> 	http://www.flickr.com/photos/58321572@N00/?saved=1
>>
>> I believe it is a Broadback (similar to a Stonefly)
>> which is often
>> found walking on the snow. His head appears to be
>> heavily armored.
>>
>> Angus
>>
>>
>
>
>
>
> ______________________________________________________________________ 
> ______________
> Food fight? Enjoy some healthy debate
> in the Yahoo! Answers Food & Drink Q&A.
> http://answers.yahoo.com/dir/?link=list&sid=396545367

_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._. 
_.
Christopher Majka - Nova Scotia Museum of Natural History
1747 Summer Street, Halifax, Nova Scotia, Canada  B3H 3A6
(902) 424-6435   Email <c.majka@ns.sympatico.ca>
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._. 
_.


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<HTML><BODY style=3D"word-wrap: break-word; -khtml-nbsp-mode: space; =
-khtml-line-break: after-white-space; ">Hi Angus and Paul,<DIV><BR =
class=3D"khtml-block-placeholder"></DIV><DIV>P.P. Harper in the chapter =
on Stoneflies (Plecoptera) in Canada and its Insect Fauna (Danks 1978) =
records 15 species in Canada in the family Taeniopterigidae (the =
so-called "Winter Stonflies). They (and other stoneflies) are =
considered,=A0as Paul points out, to be an important component on the =
diet of some species of fish. The larvae of winter stonflies are =
detritivores or herbivores, grazing on benthic algae. Some of the =
predatory species of stoneflies are thought to eat significant numbers =
of black fly larvae, so they are of double significance from the =
standpoint of humans! They are also important indicators of water =
quality since few species can thrive in waters which are warm, poorly =
oxygenated, silted, or polluted.</DIV><DIV><BR =
class=3D"khtml-block-placeholder"></DIV><DIV>Best wishes,</DIV><DIV><BR =
class=3D"khtml-block-placeholder"></DIV><DIV>Chris</DIV><DIV><BR><DIV><DIV=
>On 12-Mar-07, at 8:10 PM, Paul MacDonald wrote:</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; ">Hi Angus</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">The family =
Taeniopterygidae is known to most anglers -</DIV><DIV style=3D"margin-top:=
 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">dedicated fly anglers at least - as "Early Brown</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Stones". Eric Leiser and Robert Boyle in the book =
on</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; ">the subject say there are about 30 members in =
the</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">family. The nymphs are debris =
inhabitors rarely found</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">in open =
water. They go on about techinical ids which</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">sort of go over my head.</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Some authors say it is the most important trout =
food</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">in our waters.</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">I need get some tied up.</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Enjoy March</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">Paul</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">--- Angus MacLean &lt;<A =
href=3D"mailto:angusmcl@ns.sympatico.ca">angusmcl@ns.sympatico.ca</A>&gt; =
wrote:</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV> =
<BLOCKQUOTE type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">Since it was a nice sunny =
day (+5) I decided<SPAN class=3D"Apple-converted-space">=A0 =
</SPAN>to</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">look for some snow<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">creatures. No luck