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Post by Rick Walczyk on Jan 3, 2015 19:56:28 GMT -5
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Post by joemecca on Jan 3, 2015 21:07:23 GMT -5
there's a "debate" occurring on a facebook group of so called local experts about proper trout handling. i would post the link but i don't think they would understand some of the big words in that article....SMH
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Post by joemecca on Jan 9, 2015 16:24:18 GMT -5
I pulled this from a post online from a PNW site.
"This is a great piece of info - lots of pictures being put up here every day.... Only one problem with a lot them... Wild steelhead being held out of the water.....It is illegal in Washington state.... Here's why- Dr. Bruce Tufts is a professor of biology at Queens University in Kingston, Ontario, Canada. He has studied the physiological effects of catch and release fishing since the late 1980’s. The findings from his research have helped shape catch and release regulations throughout North America.
According to Tufts, factors such as time out of water and length of fight combine to determine a released fish’s chance of survival. In his study, “Physiological Effect of Brief Air Exposure in Exhaustively Exercised Rainbow Trout: Implications for “Catch and Release” Fisheries”, Tufts studied the effect of time out of water periods of zero, 30 and 60 seconds for rainbow trout after exhaustive exercise. In 57-degree water, after 12 hours of recovery time, the control group-- fish that were held in captivity but not exercised--experienced no mortality. The group not exposed to air immediately after exercise experienced 12% mortality. The group exposed to air for 30 seconds after exercise experienced 38% mortality, and the group exposed to air for 60 seconds after exercise experience 72% mortality. 7 out of 10 trout died after 12 hours when exposed to air for 60 seconds.
Tufts concluded, “…the brief period of air exposure which occurs in many “catch and release” fisheries is a significant additional stress which may ultimately influence whether a released fish survives”. According to Tufts’ study, any exposure to air significantly decreases a salmon, trout, or steelhead’s chance for survival.
Keep them in the water."
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Post by johnjarosz(jj) on Jan 9, 2015 17:16:31 GMT -5
Joe...that was great reading. Do you have a link to his research paper or do you know how I can get hold of him for a copy of that paper? That's really powerful stuff & I'd like to read more of what he did, in depth. Thanks..JJ
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Post by joemecca on Jan 9, 2015 18:34:23 GMT -5
sorry i do not have the full study. its been years since I've search for academic publications. so I don't know what sites may have it linkthe link above is his faculty page and has his contact information. |
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