Showing posts with label fish. Show all posts
Showing posts with label fish. Show all posts

Thursday, April 7, 2011

CSB#6:Fish Farms


           A lower amount of fish are coming from the wild, instead, people are receiving their fish by fish farming, or aquaculture. However, fish farms are usually crowded with fish in a small area, allowing diseases and parasites to easily infect the entire population of fish. Also, if an infected fish escapes into the wild, it can spread the disease to native species. Other fish would also be required to be killed in order for the farmed fish to be fed. However, fish farm owners discovered that these fish only require the same amount of food as their weight, this way, the prices of the farmed fish would be cheaper than the ones caught from the wild. Also, fish farming can be more efficient. Farmers can decide whether or not the fish are big enough to be sold on the market, the small fish can still grow. However, when big fish fleets start to set out their nets, they are most likely to receive the wrong species, dead fish due to the harsh fishing techniques or to small.
and
            I found this article interesting because it shows the pros and cons of aquaculture. I believe that fish farming is a great way to receive fish because they are efficient. This way, more fish would not go to waste, which would increase the population of wild fish. However, some people would be unsure about the safety of the fish since they may contain diseases due to the their cramped living conditions.

Simpson, Sarah. "The Blue Food Revolution." Scientific America: 54-61. EBSCO 
     Animals. Web. 8 Apr. 2011. <http://puffin.harker.org:2092/ehost/
     detail?vid=7&hid=113&sid=03a9afb5-3a36-42cd-8618-11b53061190f%40sessionmgr12&bdat
     a=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=ulh&AN=57244706>.



http://tropicalfish911.com/wp-content/uploads/2010/11/fish-farming.jpg

Monday, March 7, 2011

CSB#5:The Decreasing Population of Fish

By Albert Lin

Summary:
In the ocean, thousands of fish are being killed at an dramatic by both other fish and humans. In order to solve part of the problem, fish the size of a wheel from a wheelbarrow are being actioned. Since some fish, such as tuna, must eat equal amount of fish equal to their own weight, killing huge fish will help reduce the worlds seafood print. The real problem that effects the population of fish are fishermen. Even if there were half the amount of fishing equipment right now, we would still be catching to much fish. Daniel Pauly, a fisheries scientist at the University of British Columbia, believes that possible solutions are reducing the world's fishing fleets by fifty percent, creating larger no-catch zones, and limit the use of wild fish as food in fish-farming. However, the seafood industry will not change any rules about fishing.

Discussion:
I chose this article because it interested me about possible ways to prevent the decreasing population of fish. Also, the fact that the seafood industry will not change any regulations even though the population of fish are decreasing. In addition, there are still to many fish caught, so adding some restrictions should not affect the amount of fish caught much. I agree with Pauly, there should be stricter rules about fishing because we are fishing to much that will cause fish to become extinct.

Questions:
What other possibilities are there in order to reduce the seafood print?
How can consumers change the way they eat fish so that not as many fish would be caught?


Sources:
Greenburg, Paul. "Time for a Sea Change." National Geographic. N.p., n.d. Web. 7
     Mar. 2011. <http://puffin.harker.org:2092/ehost/
     detail?hid=17&sid=bbdeb52f-fbaf-4e1f-8bd9-2c19f1f38741%40sessionmgr10&vid=4&bdata
     =JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=ulh&AN=53874352>.



http://www.jlmphotogallery.com/wp-content/uploads/2010/05/fish.jpg