Bubble bubble ...?

A

Andre Laas

Sealiner
LOL

I really do not know if most zoologists can be called bunny huggers....... bunny's are only one level up from (lab)rats.... and they are not hugged in a lab!
 
G

GTZA

Banned
I have two questions:

1) Do bunnyhuggers ever bother to ask the bunnies' opinion?

2) Why do vegetarians (including antivivisectionists) insist that their soy substitute resemble meat?
 
R

Ryan

Sealiner
[color=#006600]GTZA[/color] wrote:
I have two questions:

1) Do bunnyhuggers ever bother to ask the bunnies' opinion?

2) Why do vegetarians (including antivivisectionists) insist that their soy substitute resemble meat?
Click to expand...
 

I am married to a vegeterian - not because of ethics but just meat does not agree with her as to why Soya products resemble meat - well underneath it all most of them would prefer a "Slab of cow"........LOL
 
1

100% African

Senior Member
Thanks for the help with the guys. It clears things up...

I also have to agree with drewmill on the issue of sustainable developement. Now that it's mentioned, on a bit of a serious note (sorry), it is very important. Basically if we do not conserve our natural resources there wont be any left. Fishing is something that everyone here enjoys but if people overfish and don't practice catch and release to some point, it will be the end of the sport. It is acceptable to take a fish or two home to eat but it doesn't mean that if you catch 20 fish you need to take all of them home.

Sustainable developement is also a constitutional right under section 24. This is important as it is something that effects all of us and we, as fishermen and women, sholud promote this to ensure the survival of the environment.

The other day I was fishing on the pier at durbs and saw that one of the fishermen had caught a 15cm seventy four. This fish is protected and he didn't even bother to hide it from the public. Is that because he just didnt care or he just didn't know... Whatever the answer, it's the sad reality of the situation. Many protected species and being killed and bag limits are often exceeded with nothing much done...
 
A

Andre Laas

Sealiner
To get back to the topic for a bit

 

The bubbles seen rising in dams are mostly the result of decomposition of organic matter in the sediments. The end products of decomposition in the sediments is mainly Carbon dioxide and Methane gas, which is sometimes trapped in the sediments until disturbed, or until enough pressure builds up to force the gas from the sediment. A moving line of bubbles usually indicates that it is a fish or some organism disturbing the sediment whilst moving along. As to the bubbles seen rising when there are no fish or organisms (visibly) present, the cause is most likely a result of pressure. This pressure can be the result of build-up over time, or can result when someone or something walks/stands on the banks of the dam. The banks of a dam is often “spongy” (even though it does not necessarily feel like it), and thus air can be forced into surrounding substrate.
 
R

Ryan

Sealiner
[color=#006600]100% African[/color] wrote:
Thanks for the help with the guys. It clears things up...

I also have to agree with drewmill on the issue of sustainable developement. Now that it's mentioned, on a bit of a serious note (sorry), it is very important. Basically if we do not conserve our natural resources there wont be any left. Fishing is something that everyone here enjoys but if people overfish and don't practice catch and release to some point, it will be the end of the sport. It is acceptable to take a fish or two home to eat but it doesn't mean that if you catch 20 fish you need to take all of them home.  If they are aleins - take them all home...........:fbash

Sustainable developement is also a constitutional right under section 24. This is important as it is something that effects all of us and we, as fishermen and women, sholud promote this to ensure the survival of the environment.

The other day I was fishing on the pier at durbs and saw that one of the fishermen had caught a 15cm seventy four. This fish is protected and he didn't even bother to hide it from the public. Is that because he just didnt care or he just didn't know...  sometimes they say ignorance is bliss - did you by anychance mention to him it was a protected species?Whatever the answer, it's the sad reality of the situation. Many protected species and being killed and bag limits are often exceeded with nothing much done...
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My question to you as I have asked many others:

"What are you as an individual angler doing to change the above statements?"

Don't take my comments as an attack because it is not intended as such - I am just so tired of people wailing about conservation issues and doing absolutely Zippo about it.

I am busy with several intatives currently and hoping to get a few sealiners involved - But Pretoria is far away from the rest of the country so we need more peeps doing it in other areas.
 
R

Ryan

Sealiner
[color=#006600]Critter[/color] wrote:
To get back to the topic for a bit

 

The bubbles seen rising in dams are mostly the result of decomposition of organic matter in the sediments. The end products of decomposition in the sediments is mainly Carbon dioxide and Methane gas, which is sometimes trapped in the sediments until disturbed, or until enough pressure builds up to force the gas from the sediment. A moving line of bubbles usually indicates that it is a fish or some organism disturbing the sediment whilst moving along. As to the bubbles seen rising when there are no fish or organisms (visibly) present, the cause is most likely a result of pressure. This pressure can be the result of build-up over time, or can result when someone or something walks/stands on the banks of the dam. The banks of a dam is often “spongy” (even though it does not necessarily feel like it), and thus air can be forced into surrounding substrate.
Click to expand...

Back to the topic:

Often gas is released with the change in tempreture - gas expands more quickly than liquid and solid materials - hence early morning 90% of bubbles are invaribly caused by fish and organizms but as the day warms so the bubbles become more apparent and when hunting for carp correctly reading the bubbles can mean the difference between catching and not catching.
 
A

Andre Laas

Sealiner
In terms of fish jumping

 

This is a subject that have had scientists, fish-keepers, anglers and nature lovers in general scratching their heads for a long time, and most likely will continue doing so for some time to come.

The proposed reasons that I know of includes:

  1. Parasites: it is widely believed that the jumping behaviour can get rid of ecto-parasites like fish-lice, hookworms and various protozoan pests. This would most likely be the case where the fish lands back in the water with a loud, slapping splash (much like a belly flop), which can probably stun some of the pests enough to let go if the fish. [/*]
  2. Rinsing the gills: As fish gills are connected to the mouth cavity, there is a strong chance that bits and pieces will end up on the gill rakes. By rising out of the water vertically and falling, back with open gill-plates, these particles, and even parasites that targets the gills are rinsed out. [/*]
  3. Reproduction: Some believe that the impact of landing back in the water may help loosen eggs in the egg-skeins before spawning. [/*]
  4. Predator evasion: Many anglers have witnessed this one for themselves. Fish will jump out of the water to escape predation. This is mostly observed when many fish jumps at once in a certain area, and may be followed by a wake behind them. There are however times when single fish will jump, and this is characterised by frantic “Swimming in air” by the fish on its way back into the water. [/*]
  5. Communication: This is a theory that is attracting a lot of attention in terms of sturgeon. It is believed that sturgeon jumps to advertise their position and size to other sturgeon. [/*]
  6. Swim bladder adjustment: Some believe that fish jump to gulp air for adjusting their swim bladders. [/*]
  7. Breathing: Fish that have “auxiliary breathing apparatus” may jump for a gulp of “fresh air” [/*]
  8. Unfavourable conditions: Aquarium keepers often report fish trying to jump out of tanks when chemical or environmental parameters (like pH, EC, temp, hardness ) are unfavourable. [/*]
  9. Pure joy: Some believe that fish jump just because they can and want to, and this has been compared to the playful behaviour of young animals and dolphins. [/*]
  10. Feeding: A lot of fish and fishspecies may jump to catch an insect on or just above the water surface. Some fish may also jump on top of an insect on the surface of the water to submerge the insect before eating it.[/*]
I guess with some homework, and in time, more reasons could be added to the list, but infill we can speak fish, we will probably never get a definite answer!
 
D

drewmill

Senior Member
[color=#006600]GTZA[/color] wrote:
I have two questions:

1) Do bunnyhuggers ever bother to ask the bunnies' opinion?
    it dont matter what the bunnies have to say
2) Why do vegetarians (including antivivisectionists) insist that their soy substitute resemble meat?
Click to expand...
how would a vegetarian know what meat tastes like hmmmmmmm, unless they were previously of the carnivourous kind.
Click to expand...
and critter thanks for the info, really a thought out answer
 
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