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Fairy shrimp Reproduction

Fairy shrimp reproduction

Your shrimp will have a one-track mind when they reach adulthood. Their only job is to make new cysts. The females will begin to make eggs as soon as they are big enough. The bright white eggs are stored in a transparent cigar shaped pouch that is attached to their abdomen. This brood pouch makes the female easy to identify. The male shrimp constantly swim around looking for a suitable female. When he finds one, he will grab her with his large antennae. The antennae look like walrus tusks attached to his face. He will quickly fertilize her eggs and swim off to find another
suitable mate. You can tell when the eggs have been fertilized because they will get larger and turn a pale tan color. They begin to develop a cyst coat. Once the cysts are fully coated, the female will push them out of her pouch, where they will sink to the bottom of the pan. The little embryos inside will grow and develop for about a day or two. When they reach the point of about 4,000 cells they will shut down and become dormant. They will not hatch until they are completely dried out, chilled and re-wetted.

HATCHING THE NEXT GENERATION

After about 6 to 8 weeks, your shrimp will die of natural causes. There is nothing you can do to change that, as this is the life span of these seasonal creatures. If all went well, you should have more shrimp cysts than you had on your first filter paper. The best way to save cysts for future cultures is to harvest them from the bottom of yourpan. Use a turkey baster to suck up the “gunk” from the bottom of the pan. Your pan should produce about 10 times the number of cysts that you started with. You don’t need all of the gunk, just about 2 to 3 baster-fulls. (You can make extra shrimp packets for other teachers, friends or other interested folks.) Pass the gunk through a coffee filter, and allow the filter to dry out completely for several days. Carefully fold the filter, label it, and store it in the freezer until you are ready to start the process again. If you are tempted to simply store your pan (and all the gunk) until next year, please beware. Adding water to a “dirty” pan often leads to a lethal bloom of algae and bacteria that can smother the delicate baby shrimp. Many people have had poor results with this technique. For best results, use a clean bleached pan for each new batch of Versatile Fairy Shrimp.

REPRODUCTION adulthood.

Their only job is to make new cysts. The females will begin to make eggs assoon as they are big enough. The bright white eggs are stored in a transparent cigarshaped pouch that is attached to their abdomen. This brood pouch makes the female easyto identify.The male shrimp constantly swim around looking for a suitable female. When he findsone, he will grab her with his large antennae. The antennae look like walrus tusksattached to his face. He will quickly fertilize her eggs and swim off to find anothersuitable mate. You can tell when the eggs have been fertilized because they will getlarger and turn a pale tan color. They begin to develop a cyst coat.Once the cysts are fully coated, the female will push them out of her pouch, where theywill sink to the bottom of the pan. The little embryos inside will grow and develop forabout a day or two. When they reach the point of about 4,000 cells they will shut downand become dormant. They will not hatch until they are completely dried out, chilled andre-wetted.12) HATCHING THE NEXT GENERATIONdie of natural causes. There is nothing you can do to change that, as this is the life span ofthese seasonal creatures. If all went well, you should have more shrimp cysts than youhad on your first filter paper.The best way to save cysts for future cultures is to harvest them from the bottom of yourpan. Use a turkey baster to suck up the “gunk” from the bottom of the pan. Your panshould produce about 10 times the number of cysts that you started with. You don’t needall of the gunk, just about 2 to 3 baster-fulls. (You can make extra shrimp packets forother teachers, friends or other interested folks.) Pass the gunk through a coffee filter,and allow the filter to dry out completely for several days. Carefully fold the filter, labelit, and store it in the freezer until you are ready to start the process again.If you are tempted to simply store your pan (and all the gunk) until next year, pleasebeware. Adding water to a “dirty” pan often leads to a lethal bloom of algae and bacteriathat can smother the delicate baby shrimp. Many people have had poor results with thistechnique. For best results, use a clean bleached pan for each new batch of VersatileFairy Shrimp.