Increasing levels of dissolved CO2 disrupt fish’s olfactory skills, study finds.

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Themistocles D'Silva

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Aug 10, 2018, 1:57:36 PM8/10/18
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Recently, there has been lots of publicity on fish treated with formaldehyde.

There are also other fishy stories. 1. Fresh water fish in local ponds have disappeared because the catfish (tigur) have been eating them. So people stopped eating tigur !!!  Nothing can be further than truth. 

It is the responsibility of the educators to enlighten the public with facts and not myths. Check the acidity and impurities of water in our ponds.

Read this study.


https://daily.jstor.org/will-fish-lose-their-sense-of-smell-in-acidic-oceans/?utm_term=Will%20Fish%20Lose%20their%20Sense%20of%20Smell%20in%20Acidic%20Oceans&utm_campaign=jstordaily_08092018&utm_content=email&utm_source=Act-On+Software&utm_medium=email

Eric Pinto

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Aug 13, 2018, 3:22:12 AM8/13/18
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Yes. Our water bodies including rivers have become highly polluted. Many anglers complain that what they once caught is not available anymore.


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Joao Paulo Cota

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Aug 13, 2018, 5:19:35 AM8/13/18
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This unfortunate situation in Goa is not just caused by pollution but also due to overfishing and lack of fishing laws. Anglers catch tiny young fish and will always find a recipe to cook these. These fish are deprived from growing up as adults and procreating, thereby depleting fishstocks. At the end, these very same morons complain that there is not fish in the waters!

The notion of sustainable fishing that involves throwing back live young fish back to the water just does not sink in on local angler's mindsets. The excuse on forums that 'if I don't take it home, somebody will' does not help the argument. 

I personally think that although many things in Goa are only getting worse - environment, corruption, etc - there is always a glimmer of hope if there are responsible people always ready to make a stand for the right thing to do. Awareness is key to anything in life. Like protesting and getting complaints to the fisheries department to take action against pollutants being thrown in fresh water bodies, having new laws prohibiting use of small holed nets, introduction of fishing seasons, etc are essential if one wants to see fish in the fresh waters of Goa. One can make one government body check another...

Else, nice images of the past - fish, animals, birds - would be the only thing left for future generations to see.





From: goa-bo...@googlegroups.com <goa-bo...@googlegroups.com> on behalf of Eric Pinto <eri...@gmail.com>
Sent: 13 August 2018 05:22
To: Goa Book Club
Cc: Goanet
Subject: Re: [GOABOOKCLUB] Increasing levels of dissolved CO2 disrupt fish’s olfactory skills, study finds.
 

augusto pinto

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Aug 13, 2018, 9:35:17 AM8/13/18
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A couple of comments about this thread:
1) Themistocles mentions that  'catfish' is 'tigur' in Konkani. Catfish is usually called 'sangott'. I'm not sure what  tigur (or thigur as we pronounce it in North Goa) is called in English although it might well may be a variety of catfish. Wonder whether someone can clarify.

2) Joao Cota blames (among others) anglers for fish depletion.An angler is defined as a person who fishes with a rod and line. I doubt whether the volume of fish caught by anglers can cause fish to be seriously depleted. What is more likely is that over-fishing may be be caused by the nets used in ponds and 'manos'es (sluice gates) which are commercially auctioned off to the highest bidder. 

Augusto 




On Mon, Aug 13, 2018 at 1:44 PM, Joao Paulo Cota <joao...@hotmail.com> wrote:

This unfortunate situation in Goa is not just caused by pollution but also due to overfishing and lack of fishing laws. Anglers catch tiny young fish... 


From: goa-bo...@googlegroups.com <goa-bo...@googlegroups.com> on behalf of Eric Pinto <eri...@gmail.com>
Sent: 13 August 2018 05:22
To: Goa Book Club
Cc: Goanet
Subject: Re: [GOABOOKCLUB] Increasing levels of dissolved CO2 disrupt fish’s olfactory skills, study finds.
 
Yes. Our water bodies including rivers have become highly polluted. Many anglers complain that what they once caught is not available anymore.


On Fri, 10 Aug 2018, 23:27 Themistocles D'Silva, <themis...@gmail.com> wrote:
Recently, there has been lots of publicity on fish treated with formaldehyde.

There are also other fishy stories. 1. Fresh water fish in local ponds have disappeared because the catfish (tigur) have been eating them. So people stopped eating tigur !!!  Nothing can be further than truth. 


--- 

Joao Paulo Cota

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Aug 13, 2018, 11:27:00 AM8/13/18
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Hi Augusto,

I did just generalise the word anglers as both those who fish with both rod and net. In the west, both activities slightly overlap, hence perhaps my overlook. 

But you are absolutely correct in the case of Goa, the worst damage is being done by these people who catch fish with nets whose holes that are too tiny to ensure all fish sizes are caught. 

Still worse are these trawlers that have nets that should be classified as illegal as these quantities of fish caught is by the tonne as opposed to a few hundred kilos by the sluice guys and a few kilos (if not grammes) by the private anglers.

Real anglers are the ones who can easily take the lead and show sustainable fishing by example.

One cannot rely on these useless governments with corrupt ministers for whom fishstocks depletion is the last thing on their agenda. Only committed people can make such a change for a better future.

Is anyone doing anything about this in Goa?

Regards,

JP






From: goa-bo...@googlegroups.com <goa-bo...@googlegroups.com> on behalf of augusto pinto <pint...@gmail.com>
Sent: 13 August 2018 13:33
To: goa-bo...@googlegroups.com

Cc: Goanet
Subject: Re: [GOABOOKCLUB] Increasing levels of dissolved CO2 disrupt fish’s olfactory skills, study finds.
A couple of comments about this thread:
1) Themistocles mentions that  'catfish' is 'tigur' in Konkani. Catfish is usually called 'sangott'. I'm not sure what  tigur (or thigur as we pronounce it in North Goa) is called in English although it might well may be a variety of catfish. Wonder whether someone can clarify.

2) Joao Cota blames (among others) anglers for fish depletion.An angler is defined as a person who fishes with a rod and line. I doubt whether the volume of fish caught by anglers can cause fish to be seriously depleted. What is more likely is that over-fishing may be be caused by the nets used in ponds and 'manos'es (sluice gates) which are commercially auctioned off to the highest bidder. 

Augusto 




On Mon, Aug 13, 2018 at 1:44 PM, Joao Paulo Cota <joao...@hotmail.com> wrote:

This unfortunate situation in Goa is not just caused by pollution but also due to overfishing and lack of fishing laws. Anglers catch tiny young fish... 


From: goa-bo...@googlegroups.com <goa-bo...@googlegroups.com> on behalf of Eric Pinto <eri...@gmail.com>
Sent: 13 August 2018 05:22
To: Goa Book Club
Cc: Goanet
Subject: Re: [GOABOOKCLUB] Increasing levels of dissolved CO2 disrupt fish’s olfactory skills, study finds.
 
Yes. Our water bodies including rivers have become highly polluted. Many anglers complain that what they once caught is not available anymore.


On Fri, 10 Aug 2018, 23:27 Themistocles D'Silva, <themis...@gmail.com> wrote:
Recently, there has been lots of publicity on fish treated with formaldehyde.

There are also other fishy stories. 1. Fresh water fish in local ponds have disappeared because the catfish (tigur) have been eating them. So people stopped eating tigur !!!  Nothing can be further than truth. 


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