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Topic: Are plastics digestible ?  (Read 2266 times)

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Offline Zak-e-Boy

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Are plastics digestible ?
« on: January 07, 2015, 08:37:45 am »
Can fish digest all the plastics/jellies that are being thrown at them nowadays ? or, are they swimming around with headaches because they are constipated? I would like to hear some views on this topic. I believe some plastics are digestible, not sure about the others.
If it has been discussed before can someone point me in that direction. :tkx: [size=78%]  [/size]




   
« Last Edit: January 07, 2015, 05:20:48 pm by Zak-e-Boy »

Offline Cam Mundy

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Re: Are plastics digestible ?
« Reply #1 on: January 07, 2015, 08:44:53 am »
Scoff one and report back in a day or two bud.

Offline Torpedo Jack

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Re: Are plastics digestible ?
« Reply #2 on: January 07, 2015, 08:48:34 am »
Scoff one and report back in a day or two bud.

He, he! You kill me, Cam! ROFL

I'd love to see Zak-e try that!


Mike
« Last Edit: January 07, 2015, 08:54:33 am by Torpedo Jack »

Offline Jordz

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Re: Are plastics digestible ?
« Reply #3 on: January 07, 2015, 08:52:59 am »
When you think about it most of the stuff that we throw into the sea is not degradable, scarey though when you think about it,

I am unashamed of the one that came down from Heaven, took my place on the cross and died for the forgiveness of my sins, Jesus Christ you rock...

Offline Cam Mundy

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Re: Are plastics digestible ?
« Reply #4 on: January 07, 2015, 08:56:11 am »
When you think about it most of the stuff that we throw into the sea is not degradable, scarey though when you think about it,

Some countries have banned lead in fishing products especially sinkers but they are mostly the land locked ones with only freshwater resources which makes sense.

Offline Cam Mundy

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Re: Are plastics digestible ?
« Reply #5 on: January 07, 2015, 09:01:31 am »
Can fish digest all the plastics/jellies that are being thrown at them nowadays ? or, are they swimming around with headaches because they are constipated? I would like to hear some views on this topic. I believe Gulp plastics are digestible, not sure about the others.
If it has been discussed before can someone point in that direction. :tkx: [size=78%]  [/size]

[/size]
 

Here's a more serious answer Fish will reject anything that isn't food they may be fooled into trying to eat something or "hitting" it but once they realise it isn't food they will spit it out. Barring that all fish have the ability to regurgitate food when under stress or if they need to clean out there stomachs. So I wouldn't worry to much about all those drop shot tails that have gone missing over the years.


Offline LGF

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Re: Are plastics digestible ?
« Reply #6 on: January 07, 2015, 09:04:45 am »
You Guys are @ it early in the year  :rotfl .
 
Anyhow, we often catch bass with lures (soft plastics) hanging out their .......... well, uhm ...........not their mouths. These lures almost always seems to have taken some beating from stomach fluids as the are not smooth anymore, some rather extensively damaged. I have also noticed that these lures mostly Zoom shows signs of degrading if left in water for some time.
 
Will it be digested in the guts of a fish, my answer would be no, don't think it spends enough time in the fish for that to take place, so yes I believe there are many a fish that had round eyes before that now swims with squinted eyes!!!
 
Cure, rub the lures in Brooklax before casting......... that way it will get out before they have t squint, pinch and swim for the nearest structure :hnthnt:
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Offline John F

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Re: Are plastics digestible ?
« Reply #7 on: January 07, 2015, 09:11:22 am »

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Offline Ziggy

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Re: Are plastics digestible ?
« Reply #8 on: January 07, 2015, 09:22:59 am »
This is what I found in a trout belly once - does not look very digested to me


cant imagine who would want to use one of those to catch trout! I dont think that the fly is related to the plastic

Offline John F

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Re: Are plastics digestible ?
« Reply #9 on: January 07, 2015, 09:31:15 am »
That was one very greedy/hungry trout!

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Offline Cam Mundy

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Re: Are plastics digestible ?
« Reply #10 on: January 07, 2015, 09:38:44 am »
Fish do ingest plastics...

http://www.ultimateangling.co.za/index.php?topic=13509.msg215199#msg215199

 

The Lancet fish look at that thing it'll eat anvils if it had the chance!

Offline LGF

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Re: Are plastics digestible ?
« Reply #11 on: January 07, 2015, 09:40:43 am »
This is what I found in a trout belly once - does not look very digested to me


cant imagine who would want to use one of those to catch trout! I dont think that the fly is related to the plastic

Ziggy, that is exactly what I was trying to say and we do get this kinda thing every so often, but as mentioned sometimes in a slightly more deteriorated state, and mostly hanging from the .......... :hnthnt:
When I die, will somebody please dress up as the Grim Reaper and attend, don't need to do or say anything, just stand there!

Offline John F

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Re: Are plastics digestible ?
« Reply #12 on: January 07, 2015, 09:51:18 am »

The Lancet fish look at that thing it'll eat anvils if it had the chance!


 :hehe: true...

There have been reports of other species (including tuna, dorado, broadbill) eating plastics too (some references below - can send PDFs to those interested).

Davison, P. & R. G. Asch (2011). Plastic ingestion by mesopelagic fishes in the North Pacific Subtropical Gyre. Marine Ecology Progress Series, 432: 173-180.

Skóra, M. E., M. R. Sapota, K. E. Skóra & A. Pawelec (2012). Diet of the twaite shad Alosa fallax (Lacepede, 1803) (Clupeidae) in the Gulf of Gdansk, the Baltic Sea. Oceanological and Hydrobiological Studies, 41: 24-32.

Anastasopoulou, A., C. Mytilineou, C. J. Smith & K. N.Papadopoulou (2013). Plastic debris ingested by deep-water fish of the Ionian Sea (Eastern Mediterranean). Deep-Sea Research I, 74: 11-13

Choy, C. A. & J. C. Drazen (2013). Plastic for dinner? Observations of frequent debris ingestion by pelagic predatory fishes from the central North Pacific. Marine Ecology Progress Series, 485: 155-163.

Carson, H. S. (2013). The incidence of plastic ingestion by fishes: From the prey's perspective. Marine Pollution Bulletin, 74: 170-174.

Lusher, A.. L., M. McHugh & R.C. Thompson (2013). Occurrence of microplastics in the gastrointestinal tract of pelagic and demersal fish from the English Channel. Marine Pollution Bulletin, 67: 94-99.

 

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Offline Zak-e-Boy

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Re: Are plastics digestible ?
« Reply #13 on: January 07, 2015, 09:56:07 am »
Scoff one and report back in a day or two bud.


Cam, fortunately for me I don't have any to try. On the lighter side, I would however rather spend 100 bucks on a half loaf mutton bunny with extra chillies and most probably get the same stomach ache.  :cry:
« Last Edit: January 07, 2015, 11:52:13 am by Zak-e-Boy »

Offline icstuff

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Re: Are plastics digestible ?
« Reply #14 on: January 07, 2015, 01:08:37 pm »
There are so much plastic in the oceans and on the ocean floor that geologist gave the plastic/stone a name which my google fu cant find anymore
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Offline Zak-e-Boy

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Re: Are plastics digestible ?
« Reply #15 on: January 07, 2015, 05:11:44 pm »
Thanks for the informative replies much appreciated. Ziggy,John F and LGF, i think i now have a much better idea of what happens to some of the tails that go missing. Nice trout Ziggi. 

Offline Lenny

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Re: Are plastics digestible ?
« Reply #16 on: January 07, 2015, 05:47:20 pm »
Some Berkley and Gulp products claim to be biodegradable . don't know how true it is .


Extended exposure to saltwater makes them very soft and makes them swell up .


Looks like a Zoom Fluke in that you got out of the belly of that trout , greedy bugger.

Offline MIKE PIKE

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Re: Are plastics digestible ?
« Reply #17 on: January 07, 2015, 08:21:38 pm »
On my last trip to Kosi was messing around in the estuary with ultra lite stuff 1/8 jighead with a white curly tail grub on the jighead , watched a evil eyed puffer follow the curly tail all the way up to the edge of the water  , stopped the retrieve to see the reaction , swam up to it chewed off the curly bit at the end of the grub and  spat it out a second or 2 later was obviously not fooled /impressed with the taste ... turned around and swam off... was actually quite funny im sure i saw a look of disgust on the face as he swam off .. :hyst: