FAQ
Frequently asked questions about shellfish.
This page has assembled some of the questions most often asked in relation to mussel farming.
How do I clam breeder?
You must apply for a breeding territory. It is a self that designate the desired breeding area. If the application is approved, you are allowed to establish a territory and breed mussels.
Can I determine the size of an area?
The size of a farming area must not exceed 250 x 750 meters.
How do I know that there are others who enters my breeding territory?
Areas should be selected so that no one in doubt that there is a breeding facility. There should be 4 corner markers. If there are more than 250 meters between 2 corner markers must also be an intermediary marker. All buoys at the site must be labeled, this also applies to corner markers. This way you can see who they belong - even if they are torn by the system. Additionally, all breeding sites sign in to the official charts, so the ships can see where breeding sites are located.
What do I as a breeder of line mussels?
The transfer price is right now around 10 kr. kg. mussels (2007).
How many clams are there in a kg?
This depends on the size and how thick-shelled mussels are. Once the mussels are approx. 4.5 inches high, it takes about 50-55 mussels in a kg.
What is the line mussels?
Line Mussels in Denmark mussels Mytilus edulis, which is bonded to a medium that hangs in the water.
What is the difference between bottom mussels and clams line?
There are several differences. First, a line mussel quicker to obtain the market size of at least 4.5 cm. (Approximately 10 to 12 months). Secondly, there is generally more meat in mussels grown in line and avoiding also true in the mussel, as they hang in the water column and therefore not in contact with the bottom.
I have heard that there are toxic algae in Limfjord - is it dangerous to eat mussels?
No, it is not dangerous to eat mussels. Areas where mussels are harvested and sold, must be approved by the food ministry before the harvest begins. Approval is based on both water and mussel samples from the area sent in to control the week before planned to harvest. The breeder may only sell its mussels, if these tests are approved by the Food Ministry.
May well produce line mussels in winter?
Yes, it can be good, but growth is very slow in winter. It is particularly an increase in its thickness, which will take place over the winter. In winter there are usually no problems with toxic algae, since the large blooms occur in spring and summer. In winter, you are thus more assured of its area open to harvest.
Why is there a difference in the thickness?
The places where the mussels grow very fast is not always that oyster invests very many energy in putting to be making these thin-shelled clams more than mussels from areas with slower growth. After a winter period, the mussels have added extra to help.
When the mussels can be harvested?
Mussels are normally harvested when they are at least 4.5 cm long. Most places can scallops of this size are harvested after only 8-10 months, but there are individual differences as the mussels do not grow equally quickly in all areas. It's often good to let the mussels hang over the winter, since in this period will be added extra to help. Many breeders choose to leave the mussels to be larger than 4.5 cm, so get the better prices. Often you reap as 1.5 to 2 years old mussels with a length of 6-7 cm.
Has line mussels no enemies?
Yes, they have. Starfish and crabs can eat mussels. Starfish will not be a big problem if the lines away from the bottom, but can be a very big problem if the lines touch the bottom. Beach crabs only eat small clams and it can actually be used to remove unwanted juveniles from entering the water.
Are there problems with other organisms?
Påvækstorganismer as barnacles, mosdyr and trekantsorm can cause problems. Barnacles and especially trekantsorm can sit so tightly that they are almost impossible to get the mussels. They can be so numerous that the mussels did not suited for fresh consumption. None of these animals harm the mussels and you can still eat mussels, but the clam shells do not look so nice.
How does a line system?
The system is built by that between two anchors with a distance of approx. 250 m stretched a long line of 14-16 mm nylon rope. Long Linen lifted to the surface by buoys placed at the ends and at regular intervals throughout the lanyard extent. Also placed a number of gravity at regular intervals to keep the line stretched to the same depth. On the line hung fry gatherers in the form of ropes or woven nylonbændler. As seen in the figure below you want a countersunk installation where only the end markers are visible. The remaining buoys are all under water. At the outlined system is presented a single-drop mussel sock where the sock is only approx. 2 meters long. It is also possible to make these as a several hundred meter long continuous stocking, which then hung on as a garland.
How do I get the small clams?
You should normally just hang some rope, tape or other into the water. Mussel larvae swimming around in the water. When they are ready to sit down, they find a suitable location. Since there are so many larvae in the water, they will sit on virtually all surfaces. There are now several ways to continue the production line on bivalves. One method is to let the small clams grow big where they sat on the tapes, rope or whatever was used as spat collector. This method is also called the Swedish model. You can also choose to spawn and then sort it and put it in socks. The mussels are placed in different size socks depending on the size of the mussels. The advantage is that the end product is more uniform in size. This method is also called the Canadian model.
Fall mussels not only by ropes?
Mussels produce so-called bysustråde. These threads are deleted from a gland in the foot with mussels, and adheres to the substrate. Byssus threads are made of keratin and other proteins and has approximately the same diameter as a human hair. Byssus threads are very strong.
Mussels can grow inside your socks?
Mussels are not inside the sock. There is simply no room for them to grow. It is intended that the mussels must climb out of the stitches in your socks and get stuck on the outside. Sock will eventually act as a rope, surrounded by clams. Why is Junk fry? If the mussels hang out in tights, it is to achieve a more uniform final product. This will be destroyed by a subsequent brood reduction with small clams. In addition, the fry will often sit in between the larger clams and push them off as they grow, which may mean a great loss. The fry can be removed by briefly immersing the reins of the crabs on the bottom. The crabs are the smallest mussels only when they are easiest to handle and can remove 60-80 percent of the fry in a short time
How do you avoid that comes starfish on the reins?
One very important thing is to choose an area that is not too shallow. There must therefore preferably be around 4 meters depth or more. That way, you avoid the lines touch the bottom immediately. As the mussels grow, the scale will be increased and it is therefore extremely important that there is put more bend on, so lines do not sink to the bottom. That means that the system should be inspected periodically. Are there any disadvantages in the farming of mussels? If you want a good result is very much work to fit the plant. In the growing season must warps inspected often so that they continually hang in the right depth and so avoiding the mussels reach the bottom at a loss. Additionally, deer also used a lot of time stocking and harvest clams.
This page has assembled some of the questions most often asked in relation to mussel farming.
How do I clam breeder?
You must apply for a breeding territory. It is a self that designate the desired breeding area. If the application is approved, you are allowed to establish a territory and breed mussels.
Can I determine the size of an area?
The size of a farming area must not exceed 250 x 750 meters.
How do I know that there are others who enters my breeding territory?
Areas should be selected so that no one in doubt that there is a breeding facility. There should be 4 corner markers. If there are more than 250 meters between 2 corner markers must also be an intermediary marker. All buoys at the site must be labeled, this also applies to corner markers. This way you can see who they belong - even if they are torn by the system. Additionally, all breeding sites sign in to the official charts, so the ships can see where breeding sites are located.
What do I as a breeder of line mussels?
The transfer price is right now around 10 kr. kg. mussels (2007).
How many clams are there in a kg?
This depends on the size and how thick-shelled mussels are. Once the mussels are approx. 4.5 inches high, it takes about 50-55 mussels in a kg.
What is the line mussels?
Line Mussels in Denmark mussels Mytilus edulis, which is bonded to a medium that hangs in the water.
What is the difference between bottom mussels and clams line?
There are several differences. First, a line mussel quicker to obtain the market size of at least 4.5 cm. (Approximately 10 to 12 months). Secondly, there is generally more meat in mussels grown in line and avoiding also true in the mussel, as they hang in the water column and therefore not in contact with the bottom.
I have heard that there are toxic algae in Limfjord - is it dangerous to eat mussels?
No, it is not dangerous to eat mussels. Areas where mussels are harvested and sold, must be approved by the food ministry before the harvest begins. Approval is based on both water and mussel samples from the area sent in to control the week before planned to harvest. The breeder may only sell its mussels, if these tests are approved by the Food Ministry.
May well produce line mussels in winter?
Yes, it can be good, but growth is very slow in winter. It is particularly an increase in its thickness, which will take place over the winter. In winter there are usually no problems with toxic algae, since the large blooms occur in spring and summer. In winter, you are thus more assured of its area open to harvest.
Why is there a difference in the thickness?
The places where the mussels grow very fast is not always that oyster invests very many energy in putting to be making these thin-shelled clams more than mussels from areas with slower growth. After a winter period, the mussels have added extra to help.
When the mussels can be harvested?
Mussels are normally harvested when they are at least 4.5 cm long. Most places can scallops of this size are harvested after only 8-10 months, but there are individual differences as the mussels do not grow equally quickly in all areas. It's often good to let the mussels hang over the winter, since in this period will be added extra to help. Many breeders choose to leave the mussels to be larger than 4.5 cm, so get the better prices. Often you reap as 1.5 to 2 years old mussels with a length of 6-7 cm.
Has line mussels no enemies?
Yes, they have. Starfish and crabs can eat mussels. Starfish will not be a big problem if the lines away from the bottom, but can be a very big problem if the lines touch the bottom. Beach crabs only eat small clams and it can actually be used to remove unwanted juveniles from entering the water.
Are there problems with other organisms?
Påvækstorganismer as barnacles, mosdyr and trekantsorm can cause problems. Barnacles and especially trekantsorm can sit so tightly that they are almost impossible to get the mussels. They can be so numerous that the mussels did not suited for fresh consumption. None of these animals harm the mussels and you can still eat mussels, but the clam shells do not look so nice.
How does a line system?
The system is built by that between two anchors with a distance of approx. 250 m stretched a long line of 14-16 mm nylon rope. Long Linen lifted to the surface by buoys placed at the ends and at regular intervals throughout the lanyard extent. Also placed a number of gravity at regular intervals to keep the line stretched to the same depth. On the line hung fry gatherers in the form of ropes or woven nylonbændler. As seen in the figure below you want a countersunk installation where only the end markers are visible. The remaining buoys are all under water. At the outlined system is presented a single-drop mussel sock where the sock is only approx. 2 meters long. It is also possible to make these as a several hundred meter long continuous stocking, which then hung on as a garland.
How do I get the small clams?
You should normally just hang some rope, tape or other into the water. Mussel larvae swimming around in the water. When they are ready to sit down, they find a suitable location. Since there are so many larvae in the water, they will sit on virtually all surfaces. There are now several ways to continue the production line on bivalves. One method is to let the small clams grow big where they sat on the tapes, rope or whatever was used as spat collector. This method is also called the Swedish model. You can also choose to spawn and then sort it and put it in socks. The mussels are placed in different size socks depending on the size of the mussels. The advantage is that the end product is more uniform in size. This method is also called the Canadian model.
Fall mussels not only by ropes?
Mussels produce so-called bysustråde. These threads are deleted from a gland in the foot with mussels, and adheres to the substrate. Byssus threads are made of keratin and other proteins and has approximately the same diameter as a human hair. Byssus threads are very strong.
Mussels can grow inside your socks?
Mussels are not inside the sock. There is simply no room for them to grow. It is intended that the mussels must climb out of the stitches in your socks and get stuck on the outside. Sock will eventually act as a rope, surrounded by clams. Why is Junk fry? If the mussels hang out in tights, it is to achieve a more uniform final product. This will be destroyed by a subsequent brood reduction with small clams. In addition, the fry will often sit in between the larger clams and push them off as they grow, which may mean a great loss. The fry can be removed by briefly immersing the reins of the crabs on the bottom. The crabs are the smallest mussels only when they are easiest to handle and can remove 60-80 percent of the fry in a short time
How do you avoid that comes starfish on the reins?
One very important thing is to choose an area that is not too shallow. There must therefore preferably be around 4 meters depth or more. That way, you avoid the lines touch the bottom immediately. As the mussels grow, the scale will be increased and it is therefore extremely important that there is put more bend on, so lines do not sink to the bottom. That means that the system should be inspected periodically. Are there any disadvantages in the farming of mussels? If you want a good result is very much work to fit the plant. In the growing season must warps inspected often so that they continually hang in the right depth and so avoiding the mussels reach the bottom at a loss. Additionally, deer also used a lot of time stocking and harvest clams.
