Astacus Leptodactylus is a crayfish that can be up to 30 cm long. The one in the picture was cut open from the back. Right behind the eyes, where the opening starts, you can see the blueish white stomach. The yellow stuff is glands that produce digestion enzymes. Between them, the "deep white" part is the testicles. Below them, in a "softer", almost see-through white there is the heart. The strings that are located below the heart are the vas deferens, the spermatic duct.
Astacus Leptodactylus has an open circulation system, which means that while there are blood vessels and a heart, the blood leaves those and surrounds the organs, supplying them with nutrients and oxygen.
In contrary to human blood, it does not contain hemoglobin but hemocyanin, which contains copper instead of iron.
Read more about it here.
Picture was taken by me#sciencepic is an initiative to bring more scientific knowledge to steemit and to promote the @steemstem project.
Yes I understand a little about crayfish (lobster).
Because it happens to be where we live not far from the river rocks.
Our society, the catching of crayfish (lobster) is a high economy, because the price is very high.
But the way of catching in our community should be pitied, because the arrests are done in an intensive way. So the intensity of catching raises the natural population.
Because the capture of crayfish (lobsters) in the use of hazardous materials and not environmentally friendly. Thereby destroying the lobster habitat as well as environmental damage.
Lobster shrimp in the know in our area as the fish / shrimp are great.
Lobster shrimp has elongated body and big head which is covered by kerapas. And also has large spikes, while the tail widened like a fan.
The color of the lobsters in our place varies depending on the type of lobster.
Thank you for reminding us of the crayfish, I love to read this post, and it is very interesting in accordance with the friendly environment of our region.
the heart of cray fish also seems to be of particular interest.
Interesting tidbit about open circulatory system I found from the site -
Open circulatory systems (evolved in crustaceans, insects, mollusks and other invertebrates) pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood
on hemocyanin from this study
These results show that hemocyanin of crayfish is involved in several immune responses such as an oxygen carrier protein, as a precursor for an antibacterial peptide, and a molecule with phenoloxidase function.These results show that hemocyanin of crayfish is involved in several immune responses such as an oxygen carrier protein, as a precursor for an antibacterial peptide, and a molecule with phenoloxidase function.
For whatever reason most of the research seems to be around late 90s early 00s, I guess there was some particular motivation for looking into them around that time. It seems to given rise to a lot of discoveries in ecological immunology research.
I think the most interesting thing looking into it is all of the trade offs and upkeep in the immune system of these types of organisms. I guess Crayfish may live in extreme conditions so that could be part of the reason we look at them?
What I know In the cultivation of lobster there are some media that is often applied by the entrepreneurs of freshwater crayfish. But in general, freshwater crayfish according to the process in the cultivation can be divided into 2 intensive and intensive in the ground pool.
How to Extend.
Exstensif manner in use in freshwater crayfish cultivation in this pond is enough to put the sires on the pond at saaat pond drained.
If there is already a lobster size is up to commercial size then for sale later for the size that is still below the standard commercial size again to the pool.
Intensive way.
This method has advantages compared with the way of extensive lobster cultivation, which is the only difference is the first way simply by putting the Her breasts only into the pond.
For example, more and more market demand for this type of freshwater crayfish can be seen from the rampant variety of places to eat from the start in the five lesehan tents that much process seafood as its flagship menu.
Freshwater Crayfish or often called with Freshwater Crayfish including which is quite easy to be cultivated.Standart freshwater crayfish prices in the market is quite high ranging from 150-250 thousand rupiah / kg.Dengan applying good techniques and true cultivation of this certainly can Promising profits.
suesa, are you gonna keep posting all the sea-food dissections?? i think you might be a sushi chef lol
itadakemasu~
.... Guess I should post the mouse before the mussle
ok, that killed the appetite
:D
hemocyanin yeah yeah yeah
People used to sale horseshoe crab in Hong Kong as high end seafood, which is another creature which use hemocyanin as the oxygen transport system
What a cutie!
Why am i thinking about endotoxin test??
you are doing expensive experiments XDDD
Animal group belonging to the Dekapoda nation of the large group of Krustasea. In terms of taxonomy, in fact the name of this shrimp scopes several different animal groups, less are still closely related. Shrimp include the types of decapods in English known as shrimp, shrimp, lobster, and crayfish; Even this title is also used to name some members of the nation Stomatopoda who have a similar body shape, such as shrimp ronggeng. Must be very tasty I do not like shrimp and do not dare to eat this shrimp. thanks you already share.
Seeing this picture of shrimp makes me hungry, it feels really good, I've tried it a few times, shrimp that contains many nutritious substances.
This post is very useful for research in the field of science, because the organs in the body makluh live not all who know, it is a very useful thing to increase knowledge.
When the operation there are several organs contained in it because the shrimp has a mouth-shaped digestive apparatus located in the anterior part of his body, then the esophagus, stomach, intestine and the posterior anus. This shrimp has digestive glands, and the liver lies in the head - chest on either side of the abdomen. So digestion other than dumped through the anus, also thrown through an excretory tool called a green gland located in the head. And the circulatory system Shrimp is not the same as humans, blood circulates without going through blood vessels. Blood does not contain hemoglobin, but hemosanin is bound to low O2 low.
We used to have one as a pet inside our aquarium..and it looks super cute! Nice to know what they look when dissected .. 😑
One of the freshwater prawns is crayfish, has a hard skin than any other shrimp. It tastes really good, I like it. @suesa
The shrimp did look complicated. But between many many shrimp, he is the most delicious.But can not eat with a lot of quantity, because the shrimp contain cholesterol very high content. If there is cooking, it will seem a lot of oil out of the body.
Though @suesa , keep posting all the seafood surgery, I think it's okay. Besides we can know better and I am sure this is very useful for all. Thanks for sharing, for me this post is very dancing. My favorite shrimp
I use to catch these with my uncle when I was younger. Great eating but I have learned that not everyone removes the waste sack before cooking. One can do this by twisting the middle fin of the tail and pulling until it comes out. Not sure if it's me but I think it taste better when cooked without the waste bag
I wonder if that variety has cannibalistic tendencies, one of the challenges of farming freshwater crays in intensive setups is that they eat the molting ones that have soft shells. Makes it hard to rear them in captivity unless you provide heaps of shelter or separate each one which is not economical.
Actually yes! Several arrived missing limbs or having weirdly smaller limbs than they should. Little cannibals those.