今儿Newsweek文章: Catch and Release Fishing Makes it Harder...

相约钓鱼, 探讨钓技, 结交钓友, 分享渔获 。。。

今儿Newsweek文章: Catch and Release Fishing Makes it Harder...

楼层:#1  帖子xiaolu » 11 10月 2018 10:19

Catch and Release Fishing Makes it Harder for Fish to Eat
By Abbey Interrante, October 11, 2018

https://www.newsweek.com/mouth-injuries-hooks-make-hard-eat-1163203

Catch and release fishing isn’t as harmless as many people think.

Researchers at the University of California, Riverside, the University of Alberta, the University of Calgary, and the University of Antwerp found that removing the hook from a fish’s mouth after it’s been caught can limit their ability to catch food. Published in the Journal of Experimental Biology on Tuesday, the study showed that fish that use suction feeding can’t suck their food in properly and experience a 35 percent reduction in feeding ability.

“What we wanted to do was try to figure out what the impact on the fish might be when it is caught using a hook and released,” Timothy Higham, a professor of biology at the University of California, Riverside, and author on the paper, told Newsweek. “I’ve done a lot of research looking at how fish feed and multiple authors on the paper are avid anglers, so it was a natural experiment and surprisingly had never been done.”

Suction feeding is a common style of feeding for many recreational sport fish species, like bass, salmon and trout. These fish suck in prey by rapidly expanding their mouths. This motion causes negative pressure their mouths compared to the water they’re in and the pressure gradient from that process then pulls the prey into the fish’s mouth. It’s similar to how we drink through a straw, and if there’s a hole in the straw we won’t be able to get the liquid up.

“We caught one group of fishing using an actual hook and line, so we did it just as an angler would, and then we caught another group of fish with just a net, so they had mouth injury, but they were caught. It’s important to keep that standardized,” Higham said. The team caught only marine shiner perches, which are common catch-and-release fish. They tested 10 fish with the mouth injury and 10 without the injury in their lab to see how quickly and how much they were able to feed.

“We thought there’d be an impact, but the impact size we used was fairly small in diameter so we weren’t sure we’d pick up a significant effect,” Higham said. “When we saw a 35 percent in the ability to feed we were quite surprised. That was much more than we thought would happen.”

The decrease in feeding ability could cause issues for fish populations but more research is needed to see the impact on that scale. “When people are fishing, they have a choice in regard to what size of the hook they use, and I think if you really emphasize using the smallest hook diameter necessary, that would potentially be very helpful,” Higham explained. However, he doesn’t advocate that people stop fishing. “Maybe this will help encourage people to think a little bit more about the damage their causing.”
xiaolu
Site Admin (站长)
 
帖子: 42626
注册: 17 9月 2013 06:22
Member Number (论坛会员注册序列号): #1
地址: Maple, Vaughan

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#2  帖子Sergeantpepper » 11 10月 2018 10:59

这报告是鼓励人们O釣魚还是O放魚呢。。。心儿很乱噢 :laugh3
Sergeantpepper
Grand General (大将)
Grand General (大将)
 
帖子: 13182
注册: 17 9月 2013 08:31
Member Number (论坛会员注册序列号): #6

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#3  帖子白雪丹枫 » 11 10月 2018 11:02

难道会比杀了鱼更坏?无聊的研究。
白雪丹枫
Grand General (大将)
Grand General (大将)
 
帖子: 14857
注册: 30 9月 2013 17:14
Member Number (论坛会员注册序列号): #74
地址: Guelph, Ontario
称呼: 白将军

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#4  帖子Sergeantpepper » 11 10月 2018 11:04

Leftards当道呀 :shout
Sergeantpepper
Grand General (大将)
Grand General (大将)
 
帖子: 13182
注册: 17 9月 2013 08:31
Member Number (论坛会员注册序列号): #6

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#5  帖子波澜不惊 » 11 10月 2018 11:28

国内竞技钓就是掉了放, 鱼越来越滑
波澜不惊
General (上将)
General (上将)
 
帖子: 5449
注册: 25 5月 2014 06:52
Member Number (论坛会员注册序列号): #487

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#6  帖子Beeknight » 11 10月 2018 12:07

那看来只能网捞了,应当不影响它们的胃口/进食能力 :laugh3 :roflmao
Beeknight
Lieutenant General (中将)
Lieutenant General (中将)
 
帖子: 3061
注册: 16 8月 2016 20:09
Member Number (论坛会员注册序列号): #1676
地址: Markham

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#7  帖子Sergeantpepper » 11 10月 2018 12:11

Beeknight @ Thu Oct 11, 2018 12:07 pm 写道: 那看来只能网捞了,应当不影响它们的胃口/进食能力 :laugh3 :roflmao


wicked you :roflmao
Sergeantpepper
Grand General (大将)
Grand General (大将)
 
帖子: 13182
注册: 17 9月 2013 08:31
Member Number (论坛会员注册序列号): #6

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#8  帖子Pungo » 11 10月 2018 12:42

Single barbless hook only is my answer.
Pungo
General (上将)
General (上将)
 
帖子: 10124
注册: 17 9月 2013 10:10
Member Number (论坛会员注册序列号): #10
地址: Richmond Hill
称呼: 司令

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#9  帖子xiaolu » 11 10月 2018 12:51

Beeknight @ Thu Oct 11, 2018 12:07 pm 写道: 那看来只能网捞了,应当不影响它们的胃口/进食能力 :laugh3 :roflmao

应当不影响它们的口活儿?
xiaolu
Site Admin (站长)
 
帖子: 42626
注册: 17 9月 2013 06:22
Member Number (论坛会员注册序列号): #1
地址: Maple, Vaughan

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#10  帖子波澜不惊 » 11 10月 2018 13:44

国内竞技都无倒刺,鱼一样愈来愈滑
波澜不惊
General (上将)
General (上将)
 
帖子: 5449
注册: 25 5月 2014 06:52
Member Number (论坛会员注册序列号): #487

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#11  帖子tigeroffroad » 11 10月 2018 14:46

鱼放得多了,罪过罪过 :laugh3
tigeroffroad
Lieutenant General (中将)
Lieutenant General (中将)
 
帖子: 3320
注册: 01 12月 2013 00:58
Member Number (论坛会员注册序列号): #209
地址: 苜蓿谷, 碧溪

Re: 今儿Newsweek文章: Catch and Release Fishing Makes it Harder.

楼层:#12  帖子XUYCA » 12 10月 2018 07:53

文章说用小钩钓。对鱼伤害最小。但像钓婆吃我建议还是用大钩。小钩鱼吞钩的机会更大。对鱼伤害更厉害。
XUYCA
Grand General (大将)
Grand General (大将)
 
帖子: 20440
注册: 17 9月 2013 09:45
Member Number (论坛会员注册序列号): #8
地址: 密室 Mississauga
称呼: 院长


回到 It's All About Fishin' 钓鱼!

在线用户