Quote:
Originally Posted by GaryF
9. It is a poor lesson in conservation to teach young anglers to keep large spawning sized fish and not smaller eating sized ones. But its better to fish out the small ones so that they can't get to spawning size? Lots of fish become sexually mature prior to being 20" long, others become 20" long prior to sexaul maturity. Will dig up some biological text books for you to read on that.
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http://en.wikipedia.org/wiki/Sustainable_fisheries
".......a group of scientists offered the following ten commandments for ecosystem-based fisheries scientists[36]
“
Keep a perspective that is holistic, risk-adverse and adaptive.
Maintain an “old growth” structure in fish populations, since big, old and fat female fish have been shown to be the best spawners, but are also susceptible to overfishing.
Characterize and maintain the natural spatial structure of fish stocks, so that management boundaries match natural boundaries in the sea.
Monitor and maintain seafloor habitats to make sure fish have food and shelter.
Maintain resilient ecosystems that are able to withstand occasional shocks.
Identify and maintain critical food-web connections, including predators and forage species.
Adapt to ecosystem changes through time, both short-term and on longer cycles of decades or centuries, including global climate change.
Account for evolutionary changes caused by fishing, which tends to remove large, older fish.
Include the actions of humans and their social and economic systems in all ecological equations.” "
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