I’ev been away for a while now, but i’d like to start this blog up again (as ill probably have more work going into my second year ill need something to procrastinate with). So i’m gonna see what i can come up with and start queuing up some hopefully interesting posts:).
I’m not sure anyones ever tried to do an aquaculture project with sharks before, and it would be quite interesting to see, but also very difficult. One problem i can see is im not entirely sure if your professors/FFA would consider this aquaculture in the first place: aquaculture generally refers to a larger scale of production and raising 3-6 sharks is more like something an aquarist might do.
That’s not to say it can’t be done though, however it would probably be very expensive: depending on wether you can actually get eggs for these sharks in the first place, getting them to hatch isn’t the easiest thing in the world, and the gestation period is between 9-12 months. You’d also need quite a large tank to raise any type of shark and in some cases they will only eat live feed, which is also very expensive to keep up.
If you’re looking to do an aquaculture project raising crustaceans such as crabs or shrimps is very cheap (however time consuming, it could take up to two years to have a fully grown culture). Zooplankton/algae work very well as well & i know that salmon larvae would probably work quite well , and isn’t all too expensive.
I hope that helped, if you have more details about what you actually want to do i’d be glad to help out.
thank you so much!:)
The forgotten fish?
Shark finning is a massive, multi million dollar industry. But there’s another fish that’s more endangered (in fact, the IUCN once described this as one of the most endangered species on earth) that’s also being killed illegally for one small component of its body. Above is the beluga, or Huso huso. Not the whale, but the sturgeon. Growing up to some massive sizes of 1500 kilos and 7.2 meters long (as one specimen caught in 1827) and living for up to 100 years it is also the oldest living family of bony fish. It is hunted for its roe. Beluga caviar is one of the most exclusive and sought after types of caviar, and severe overfishing has caused this beautiful fish to be classified as critically endangered by the IUCN.
Beluga caviar can sell for as much as 10,000$ per kilo depending on the quality, with a special sort (harvested exclusively from females at least a 100 years of age) going for some 25,000$ per kilo.
Much like the shark, the beluga is an apex predator in its environment, and it would be a shame to see such a beautiful fish disappear.
There’s been a ridiculous amount of buzz lately about this whole Kony 2012 thing, so i decided today that’d i’d finally sit down and watch it today. While i am absolutely blown away and disgusted that what is happening in uganda (or was happening in uganda and now elsewhere according to some sources) is happening, i just can’t help wishing that people always acted like this when it comes to matters like these.
Without sounding all too “environmental warrior”, i just can’t help but to feel sad that with all the amazing documentaries that are out there about the environment, and with all the data that there is to show how utterly we are abusing our earth, why aren’t we making the same effort? After all, that truly affects every single one of us.
We are all really, in one way our another, environmental Joseph Konys. And it needs to stop. So stop it.
Sorry about the long text post, hope someone took some time to read this.
That was a very ocean concerned episode of family guy. I rather liked it.
Just thought i’d also showcase some of the beautiful drawings by Ernst Haeckel of radiolarians and diatoms (left and right respectively).
While we’re being microbiologists, lets also explore the zooplankton. These are radiolarians, they are, if possible, even more intricate and beautiful than diatoms due to to their mineral based skeleton. The feeding manner is quite interesting: Using extensions in their skeleton known as pseudopods, they slowly ingest prey such as diatoms or other small plankton. In some cases however, they have been found to be attached and slowly digesting zooplankton sometimes 1000x larger than themselves (which still isn’t that large, as radiolarians only grow to a max of 300 microns, but still an impressive feat nonetheless)
Things in the ocean that you can’t see, but really should be paying attention to:
Diatoms. One of the most commonly found types of phytoplankton, they’re made up of these incredibly complex silica exoskeletons, which give them their distinctive look. They’re an incredibly important group - alone they’re responsible for something like 40% of marine primary production.
Definitely! I love marine micro organisms, they’re incredibly interesting and beautiful. Coming right up:)
Aand i’m back and posting again. That was an interesting & busy week. Sorry about the lack of recent posting:)
thank you! i definitely will do:)