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Female blue crabs mate only once in their lives, when they become sexually mature Read on to learn how crabs mate, fertilize eggs, and undergo an incredible metamorphosis from tiny larvae to familiar adult crabs, their different reproductive strategies and much more. Soon after mating, the female crabs migrate to high salinity waters near inlets (figure 1).
Why do female crabs only mate once Many species of crab only mate once, but after fertilizing the initial set of eggs, the female continues to store enough sperm on her abdomen to fertilize two or three more sets of eggs. Although a female will mate only once, she may produce many fertilized egg masses during her lifetime from this single mating
Fertilization occurs each time a new egg mass is produced by the ovaries until the sperm reserves are depleted.
Do crabs only mate once A female blue crab can mate for just one short period in her life, during a few days after she molts to maturity This gives male blue crabs a very short window of time to inject her with the sperm that will fertilize the millions of eggs she will produce in the next year or two. Most species of crabs can carry as many as 100,000 to 200,000 eggs at one time, but many of these won’t hatch and only a small percentage ever grow to adulthood
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