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Fishing版 - Bass出水以后能活多久?
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话题: bass话题: temps话题: water话题: were话题: out
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r********n
发帖数: 6979
1
今天做了点research. 大部分老美的说法是1-2分钟没有问题, 再长就不行了. 不过基
本都是经验之谈, 找到了这篇文章是evidence based. 作为大家参考
RE-EXAMINING "HOLDING YOUR BREATH" GUIDELINES
I've come across two truly fascinating studies concerning largemouth
bass and hypoxia. One was published a year ago, the other is set for
publication very soon. In both cases they studied varying amounts of air
exposure after exercise/angling that a bass could be subjected to. One
was done in the lab, one in the field. Both have reached the same basic
conclusion. Check these out:
Behavioral and physiological responses of the congeneric largemouth
(Micropterus salmoides) and smallmouth bass (M. dolomieu) to various
exercise and air exposure durations
This is the 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. in this test. Largemouth recovered
faster than smallmouth as expected, but there were no documented
mortality cases after 24 hours.
In this test of largemouth bass only, bass were angled from the lake and
then held out of the water for a varying amount of time that ranged from
0 up to 15 minutes. Tests were conducted during two specific
environmental time frames, once at 15 deg. C. water temps and again at
21 deg. C. 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.
Again, no delayed mortality occurred for any of the fish including those
held out of the water for the maximum 15 minutes. Fish held out of the
water longer took longer to recover, as well as longer to leave their
release area in the lake (at higher temps vs. short duration cooler
temps, but not significant).
We've always figured "bass aren't trout" and could be subjected to
greater stressors (i.e., air exposure) and still come out OK. That bass
could be held out of water for 10-15 minutes and returned relatively
unharmed was a bit of a surprise to me. That is a rather lengthy bit of
time even for the most unpracticed of bass anglers. I am actually quite
shocked at the result, but certainly love the practicality of the study.
That said, keep in mind that all testing occurred at water temps at or
under 75 degrees F., the temp. threshold that has long been thought to
be the dividing line between safe and unsafe when it comes to fish care
handling practices. Both studies warned of possible high mortality if
repeated in these warmer water temps. The general rule of thumb that
you'll hear bass anglers espouse is to hold bass out of the water no
longer than you could hold your own breathe. While this still remains
good practical advice to follow, we now have some concrete evidence to
actually make specific statements concerning this subject.
m****x
发帖数: 2506
2
the longest time by my experience
3 hours
after catching a 20.5 SMB
put it in a cooler with ice.
Drove 3 hours, when I got home, the fish was still alive.
W*******s
发帖数: 18705
3
Some bass will learn from mistake to avoid certain type of lures. Most of
them only have few minutes of memory.
e********g
发帖数: 2524
4
did you release the fish after got home?
the study was about fish mortality after release

【在 m****x 的大作中提到】
: the longest time by my experience
: 3 hours
: after catching a 20.5 SMB
: put it in a cooler with ice.
: Drove 3 hours, when I got home, the fish was still alive.

W*******s
发帖数: 18705
5
哈哈,Bass15分钟离水,放回去还能活?这个不太靠谱。
1 (共1页)
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话题: bass话题: temps话题: water话题: were话题: out