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numbskull · 09-24-2014, 11:42 AM

Here is some info on LMB. Note that the first study quoted used lipping holds, much like a boga. They had minimal mortality at least short term (there is some info that an isthmus injury leads to slow starvation via ineffective feeding).

"A couple recently published studies* took a good look at how bass fared when held out of water (hypoxia) for extended periods of time, and the results might surprise you.
The first was a lab test comparing largemouth to smallmouth. Bass were physically exercised to simulate angling and then held by the jaw (“thumbed” just like most every angler does) for a randomly chosen amount of time up to 10 minutes out of the water and exposed to the air. Afterward, fish were placed back into a holding tank and observed and tested for some chemical parameter monitoring, then ultimately placed back into a raceway for 24 hours to observe for delayed mortality. Water temps ranged between 18-23 deg. C. (64-73 F) in this test. Largemouth recovered faster than smallmouth, as expected, but there were no documented mortality cases after 24 hours in either species.

In the other study, largemouth bass were caught from a lake and then held out of the water for varying amounts of time that ranged from 0 up to 15 minutes. Tests were conducted during two specific environmental time frames, once at 15 deg. C. (59 F) water temps and again at 21 deg. C. (70 F). Bass were also tested for various bodily (chemical) parameters and were then placed in a holding tank for 30 minutes of recovery/observation. During this time they were fitted with an external transmitter and then released back into the lake and tracked for 5 days. Fish held out of the water longer took longer to recover, as well as longer to leave their release area in the lake, but again, no delayed mortality occurred for any of the fish including those held out of the water for the maximum 15 minutes. "

09-24-2014, 11:42 AM	#2
numbskull Oblivious // Grunt, Grunt Master iTrader: (0) Join Date: Nov 2005 Location: over the hill Posts: 6,682	Here is some info on LMB. Note that the first study quoted used lipping holds, much like a boga. They had minimal mortality at least short term (there is some info that an isthmus injury leads to slow starvation via ineffective feeding). "A couple recently published studies* took a good look at how bass fared when held out of water (hypoxia) for extended periods of time, and the results might surprise you. The first was a lab test comparing largemouth to smallmouth. Bass were physically exercised to simulate angling and then held by the jaw (“thumbed” just like most every angler does) for a randomly chosen amount of time up to 10 minutes out of the water and exposed to the air. Afterward, fish were placed back into a holding tank and observed and tested for some chemical parameter monitoring, then ultimately placed back into a raceway for 24 hours to observe for delayed mortality. Water temps ranged between 18-23 deg. C. (64-73 F) in this test. Largemouth recovered faster than smallmouth, as expected, but there were no documented mortality cases after 24 hours in either species. In the other study, largemouth bass were caught from a lake and then held out of the water for varying amounts of time that ranged from 0 up to 15 minutes. Tests were conducted during two specific environmental time frames, once at 15 deg. C. (59 F) water temps and again at 21 deg. C. (70 F). Bass were also tested for various bodily (chemical) parameters and were then placed in a holding tank for 30 minutes of recovery/observation. During this time they were fitted with an external transmitter and then released back into the lake and tracked for 5 days. Fish held out of the water longer took longer to recover, as well as longer to leave their release area in the lake, but again, no delayed mortality occurred for any of the fish including those held out of the water for the maximum 15 minutes. "