Putting an age to your crab

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JediMasterThrash
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Putting an age to your crab

Post by JediMasterThrash » Sun Sep 07, 2008 4:29 am

I think I'm going to go out on a limb here and try to place an age on crabs based on their size.We know you can't tell the exact age without counting the rings from the base of their antennules. We know that you can't tell age from the size of the BP or legs, because they might be smaller when regenerated. We know they might have fewer molts during times of stress. But generally, we should be able to place a rough age, plus or minus a couple years, on a crab based on their general size. It doesn't have to be exact, but it's nice to have some way to place a guess as to our crabs' age.This scale is for PPs. Other crabs which probably follow a similar scale are Violas, Cavs, Brevies, Straws, Blueberries, and spinners.Ranges would probably be (low, average, high)Tiny 1-2yrsSmall 2-3-5yrsMedium 5-7-10yrsLarge 10-13-17yrsJumbo 17-21-50yrsE's, Aussies, and ruggies seem to be a bit smaller, and probably follow closer to this scale:Ranges would probably be (low, average, high)Tiny 1-2-3yrsSmall 3-5-8yrsMedium 8-11-15yrsLarge 15-19-35yrsCorresponding sizes (based on crab+shell, with a perfect-fit turbo as the baseline shell)Tiny is around marble to quarter.Small is around quarter to golf-ballMedium is around golf-ball to eggLarge is around egg to baseballJumbos are baseball and aboveAs for molting frequency, again this is based on anecdotal approximations:Tinies around every few weeks to 2 months.Smalls around every 2-3 monthsMediums every 3-4 monthsLarge every 4-8 monthsJumbo every 0.7-1.5 years.By the time a crab is a medium (7yr), they may have molted (tiny 28 times, small 16 times, medium 7 times) 51 times by my estimate. And that doesn't count the time time spent as "ants" which may have had another dozen molts before they walked off the beach in a shell.As always, crabs will often postpone molts in times of stress, so actual molting frequency may vary.Any help in refining this will always be appreciated.
JMT.

Stuck-up, half-witted, scruffy-looking crab-herder since '92.

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