07-31-2006, 09:53 PM
[cool][#0000ff]MGB posted a report that included a pic of a nice rainbow...released because it had some orange on its chin. There was some debate about whether it was a cuttbow or not. I sent a request for clarification to DWR, attention Drew Cushing. He has not had time to respond on the thread, but I did get an email response from Alan Ward, the Project Leader for UDWR. I hope he doesn't mind if I copy and paste his email. I think it will help answer some of the questions we have all had:[/#0000ff]
[#0000ff][/#0000ff]
I do not know if you have heard from Drew Cushing yet about your Strawberry "cuttbow" question, but I saw that the issue was raised, and
thought I would make a quick response.
"Cuttbows" can be found in Strawberry, though it is relatively rare. We have only seen two that appeared to be classic first generation crosses of a cutthroat and rainbow since the 1990 treatment. The sterilization process has been between 96% and 100% effective in the past. This does leave some room for error. However, many of the
rainbows would be fall spawners, further minimizing the potential for inter-breeding. In our cutthroat spawner trapping efforts in the last 6
years we have captured only one rainbow that appeared to be a viable male. So crosses could happen, but it is not common by any means.
As far as the classic "cutthroat" markings under the jaw, I wish people would not use them as an indicator. I have used our brochures and various public contacts to try and educate people not to rely on the orange slashes under the jaw. Not only do the rainbows often have these markings under their jaw, but the cutthroat often do not have them (particularly in a reservoir or lake environment). Spotting patterns, pink stripe down the side on rainbows, shape of head, and the prevalent orange pelvic and anal fins on the cutthroat are far better characters.
The fish in the picture on BigFishTackle.com [font "Verdana,Arial,Helvetica"][black][size 1][url "http://www.bigfishtackle.com/cgi-bin/gforum/gforum.cgi?do=post_attachment;postatt_id=17577;"][#333366] Copy of July 29 2006 001.jpg [/#333366][/url](128 KB) [/size][/black][/font]appears to me to be a classic rainbow, and though I cannot speak for the law enforcement officers, it is extremely unlikely that anyone would be ticketed for that fish. Of course, it is impossible to tell from the picture alone that it does not have any cutthroat genes in it, so I will not dispute
that it could. However, our officer at the reservoir does not look just for slashes under the jaw, and I am confident that he too would have identified that fish as a rainbow (in fact I will run it past him as well).
Unfortunately, as I have probably mentioned to you before, I cannot respond to all of the issues and questions brought up on the chat lines
directly. However, if you, or any other angler, has specific questions about Strawberry don't hesitate to contact me.
Hope this helps. Take care
Alan Ward
Strawberry Project Leader
UDWR
[signature]
[#0000ff][/#0000ff]
I do not know if you have heard from Drew Cushing yet about your Strawberry "cuttbow" question, but I saw that the issue was raised, and
thought I would make a quick response.
"Cuttbows" can be found in Strawberry, though it is relatively rare. We have only seen two that appeared to be classic first generation crosses of a cutthroat and rainbow since the 1990 treatment. The sterilization process has been between 96% and 100% effective in the past. This does leave some room for error. However, many of the
rainbows would be fall spawners, further minimizing the potential for inter-breeding. In our cutthroat spawner trapping efforts in the last 6
years we have captured only one rainbow that appeared to be a viable male. So crosses could happen, but it is not common by any means.
As far as the classic "cutthroat" markings under the jaw, I wish people would not use them as an indicator. I have used our brochures and various public contacts to try and educate people not to rely on the orange slashes under the jaw. Not only do the rainbows often have these markings under their jaw, but the cutthroat often do not have them (particularly in a reservoir or lake environment). Spotting patterns, pink stripe down the side on rainbows, shape of head, and the prevalent orange pelvic and anal fins on the cutthroat are far better characters.
The fish in the picture on BigFishTackle.com [font "Verdana,Arial,Helvetica"][black][size 1][url "http://www.bigfishtackle.com/cgi-bin/gforum/gforum.cgi?do=post_attachment;postatt_id=17577;"][#333366] Copy of July 29 2006 001.jpg [/#333366][/url](128 KB) [/size][/black][/font]appears to me to be a classic rainbow, and though I cannot speak for the law enforcement officers, it is extremely unlikely that anyone would be ticketed for that fish. Of course, it is impossible to tell from the picture alone that it does not have any cutthroat genes in it, so I will not dispute
that it could. However, our officer at the reservoir does not look just for slashes under the jaw, and I am confident that he too would have identified that fish as a rainbow (in fact I will run it past him as well).
Unfortunately, as I have probably mentioned to you before, I cannot respond to all of the issues and questions brought up on the chat lines
directly. However, if you, or any other angler, has specific questions about Strawberry don't hesitate to contact me.
Hope this helps. Take care
Alan Ward
Strawberry Project Leader
UDWR
[signature]