| Author |
Message Text |
|
The Great Outdoors
|
Many more lake trout released by Lake Superior anglers die when water temperatures are over 50 degrees than originally thought, according to a new fisheries study on Lake Superior and Lake Huron.
Results of the study, led by a researcher at the Michigan Department of Natural Resources in Marquette, Mich., will soon be published in the North American Journal of Fisheries Management.
Research from the 1980s indicated that only about 15 percent of lake trout died after being released, said Cory Goldsworthy, Lake Superior Area fisheries supervisor for the Minnesota Department of Natural Resources. The new research indicates that more than 40 percent of lake trout caught and released by anglers die when surface water temperatures exceed 50 degrees.
|
|
timatkn
|
There is another study being done on Lake Michigan being done over 7 years with a very high n, will be curious to compare the two studies. The Michigan study has a control group to see what natural mortality is to compare the two.
Thanks,
T
|
|
mastertangler
|
Call me a cynic. There seems to be so much agenda driven nonsense out there these days. I am always skeptical of any "study". Wait util the "powers that be" grab hold of this. Ah, we will have to close the season during any months where the surface temp is above 60 degrees. "See, we have this study........."
Give me 3 or 4 more studies from a variety of sources and then maybe I will put some stock into it. If it is true then I would be on board with measures to protect, but for now this will be a pretext for more government micro management over every aspect of our lives including fishing (what kind of hook you can use, no bait, when you can catch a fish, where you can catch a fish, etc. etc.)
It seems we have become like sheep in may respects. Told what to believe and then with bobble head nods just going along with the next restriction of our liberties. Reading a book about the Alamo........I think I would of fit right in.
|
|
AmarilloJim
|
Pretty big disparity between those 2 studies. Would like to see the study designs and variables.
|
|
Pinetree
|
Its been fora long time by various studies nationwide as water temperatures increase a fishes metabolism increases and output of chemicals like lactic acid increase. As water temps warm heart rate etc. increase along with stress. Each fish species has its own threshold. Fish like walleye and bass as the temperature passes 65 degrees tournament mortality increases substanially and some areas will not allow a tournament pass a certain temperature.
Most trout stress out at a much lower temperature than many fish.
|
|
Pinetree
|
A example of warm water and metabolism. Look at your minnows and how hardy they are in cold water and last forever. Warm water you have to e very careful with them or they die easy.
|
|
mastertangler
|
Pinetree: "A example of warm water and metabolism. Look at your minnows and how hardy they are in cold water and last forever. Warm water you have to e very careful with them or they die easy."
Very true.
|
|
Pinetree
|
mgraber
I think if your going to fish lake trout deep and water is that hot,catch what you want to eat and quit fishing them. Lake trout grow so slow they probably were 15-20 years old if in the mid 20 inch range.
I also think sometimes if people are not going back to that area again they really don't care.
We got something special in Quetico and the BWCA lets keep it that way. Look around the world and just think how lucky we are to have a chance to do something like this.
|
|
bobbernumber3
|
Most trout fishing on the Great Lakes is motor trolling on charter and pleasure boats. It is rare for a boat to stop and play/catch a fish. They have "too many lines out". In almost every case the fish is drown and dead before it hits the net. Catch and release would result in 100% mortality. I wonder if that was a factor in the study?
|
|
bellastenberg
|
White papers serve as an important tool for many organizations. In order to write a professional white paper, the writer must possess advanced writing skills. What to do if you need a white paper but your writing skills are not good enough? The answer is simple - hire professional white paper writers and order white paper writing services from https://essaysworld.net/white-paper-writers!
|
|
mgraber
|
I would not be surprised if the study were accurate. I have been following fish mortality studies for various species for quite awhile now, and the main thing I've learned is that a fish swimming away strong is meaningless as to long term mortality. Many fish take a week or more to die from being caught, they just aren't able to recover and often develop fungal infections from handling and being stressed. Fish are incredibly delicate creatures when talking about delayed mortality even though they can seem pretty tough for the short term. Many older studies did not follow the fish long enough. I too would like to see more details about the study. We were on Sarah a few years ago at the end of June during a heat wave. There was a group catching deep lakers (60-80ft)pretty consistently. We could not help but notice a number of floating lake trout down wind from where they were anchored. When we turned back to tell them they said they couldn't be their fish as they were unhooking them in the water(80+ surface temp). There was noone else around. I think another problem is their use of 4# test and ultralight tackle which required playing the fish to exhaustion. They were going to be there for 5 days, I wonder how many they killed.We will not fish for lakers in July or August or when temps are high. We do not hang from scales and keep time out of water under 60 seconds and usually under 15 seconds unless we need one to eat. I know others will disagree, and I'm not here to fight, but I think if you have to fish extremely deep for lakers, it might be too hot to put them through it. It takes a LOOONG time to grow a decent laker in the BWCA.
|
|
AlanPetit
|
A study of brown trout shows there is more genetic variation among the fish than in human populations. The research, conducted by Inland Fisheries Ireland in combination with academics from University College Dublin and more recently Queen’s University Belfast, reveals there is more genetic variation in Ireland’s brown trout population than there is between populations in the human race. Thank you so much for sharing these points with us. Sure i will be benefited from it to create a paper on such topic.
|
|
Savage Voyageur
|
What part of no commercial posting don’t you get? Moderators need to delete this crap.
|
|
lundojam
|
hackety! hack!
I got your white paper right here.
|