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Is this Didymo?

Joined:
2012/8/24 16:03
From Philly
Posts: 145
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Hey everyone. I got out this weekend and noticed this crap in a local stream. Wasn't sure if it's didymo or not. Any thoughts?

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Posted on: 2013/3/5 21:25


Re: Is this Didymo?

Joined:
2013/1/28 19:37
From hellertown
Posts: 39
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Tough to tell from the picks ...... Didimo is rough and course and feels like steel wool

Posted on: 2013/3/5 21:41


Re: Is this Didymo?

Joined:
2012/8/24 16:03
From Philly
Posts: 145
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hm... this looked a bit slimy, which I guess is not characteristic of didymo? i didn't think to touch it.

Posted on: 2013/3/5 21:43


Re: Is this Didymo?

Joined:
2013/1/28 19:37
From hellertown
Posts: 39
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I would say no then

Posted on: 2013/3/5 21:50


Re: Is this Didymo?

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2010/6/26 11:19
From Along the Lehigh Above the Gap
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I always thought didymo was slimy. That is why it is called rock snot. No?

Posted on: 2013/3/5 22:26
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Re: Is this Didymo?

Joined:
2012/8/24 16:03
From Philly
Posts: 145
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Me too... the name "rock snot" is what made me think that's what I was looking at. I did read that it's not slimy, and that it feels like wet cotton or as suggested above steel wool. Either way, I got really bummed when I saw it.

Posted on: 2013/3/5 22:43


Re: Is this Didymo?

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2009/1/10 22:48
Posts: 144
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Hard to tell from the angle but the second and the last picture look like the mo.

Posted on: 2013/3/5 23:08


Re: Is this Didymo?
Moderator
Joined:
2006/9/9 17:32
From Gettysburg
Posts: 9232
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Didymo is not slimy but rather rather has a course, wool-like feel.

Nevertheless, I'm not sure about the pic. Didymo is yellow and tends to bloom out this time of year on rocks....but this is also true for a variety of algeas. If it was local around Philly, I'd contact the PFBC and forward these pics via PM to Mike just to be safe. Didymo does exist in some eastern PA waters and may be spreading.

EDIT: I sent the link to Mike to check out. He may want to know the water involved. Jbomb, you might want to follow up by PMing Mike the name of the stream and area you fished.
Dave W

Posted on: 2013/3/6 7:18


Re: Is this Didymo?

Joined:
2008/1/31 17:19
From Pretty much everywhere at some point, Thorndale today.
Posts: 13548
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I've never seen or felt didymo, so take it for what it's worth. But my impression was that it LOOKED slimy, but if you actually picked it up it was not.

But yes, tis the season for algae blooms of all types.

Posted on: 2013/3/6 8:20


Re: Is this Didymo?

Joined:
2012/8/24 16:03
From Philly
Posts: 145
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I'd be happy to PM Mike the location and creek. Is his screen name simply Mike?

Posted on: 2013/3/6 8:21


Re: Is this Didymo?
Moderator
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Quote:

jbomb wrote:
I'd be happy to PM Mike the location and creek. Is his screen name simply Mike?


Yes, that's him. He's the Area Fisheries Manager for the southeast region.

Posted on: 2013/3/6 9:34


Re: Is this Didymo?

Joined:
2008/12/29 12:54
From Frederick, MD & New Philly, OH
Posts: 445
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I've seen it have multiply colors in the Gunpowder and the Savage Rivers. As said above, it does feel course and not slippery to the hand.

The bloom on the Gun usually is bad during the winter. However, due to heavy flows this year, the bloom is not bad at all.

Posted on: 2013/3/6 10:20
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Re: Is this Didymo?

Joined:
2006/11/2 8:50
Posts: 6269
Online
Here's a link to a PFBC online form to report invasive species:

http://www.fish.state.pa.us/ais-reporting.htm

Posted on: 2013/3/6 12:39


Re: Is this Didymo?

Joined:
2006/12/29 10:00
From Harrisburg
Posts: 2013
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It seems every year around this time I start to see algae that raises this same question in my mind.
Probably not but its certainly best to make sure before you start fishing surrounding streams. I would just go back and feel it.

Posted on: 2013/3/6 16:00
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Re: Is this Didymo?

Joined:
2012/8/24 16:03
From Philly
Posts: 145
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I PMed Mike. I'll wait till i hear back from him before submitting the report.

Posted on: 2013/3/6 19:47



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