Posts Tagged ‘molted’

The Gift – A Fiddler Crab Extra From a Fellow Crab Enthusiast

March 18, 2008

One of our readers sent in some information the other day about her attempts to raise fiddler crab larvae. That comment was in response to my blog post entitled:

The Fiddler Babies are Dead But We’ll Start Over and Prove HorseyhannahWrong.

Yesterday Laurie has this update that she posted on one of my other blog posts: “Extra! News on Preparing the Fiddler Crab Nursery.”

She has such good info, and generously wants to share it with all, so I include it here for all to see.

I especially loved what she said toward the end of her comment, that maybe if all of us who have knowledge on the subject of fiddler crabs pool our info, we can prove that you CAN too raise fiddler babies without the hundreds and thousands of dollars of equipment that Horseyhannah (on the Animal Planet forum) says you need.

So here is Laurie’s information, her gift to all fiddler enthusiasts out there, updating us on her progress and also listing the many things she’s done to make this work. Thank’s Laurie! And to anyone else who might have more info for myself or Laurie, please do send your comments. They are welcome!

Fiddler crab lovers of the world, unite!!! 🙂

Comment:
Laurie’s Fiddler Crab fry–March 17th, 2008, Day 7 and still going…

Just an update. They were released on March 10th and true to the (artist!?) breeder of the mangrove crabs www.aquahoito.info/sesarma/index.html on March 15th, day 5, I had a little more than half die off. In the last 2 days no more have died, tho.
Today I was able to get supplies for them, including a salinity meter ($7.00) and some test strips for nitrate/nitrite etc. and Kent’s PhytoPlex (not live) for more food. As I didn’t have proper food for them I did the newborn fish fry trick of feeding them hard boiled egg yolk. About 1/2 a matchstick head’s worth smashed fine in some water and dispersed with the fry, twice a day. That was too much, no doubt, but I’m new at crabs and they did ok…

I tested my water (2 gallon hex w/no filtration, slight bubbling from airstone) and nitrates were 0, nitrites were alright-“caution” .5 ppm, salt is .015ppm, hardness 300 (ideal). I’m finding it’s cheaper to do water changes in a small fry tank than buy a whole salt water filtration system. 2 tbsp Ocean Reef salt/quart, 1 qt every couple days. The little squirts only have to get to 2 or 3 months old before they’re little crabs, by the looks of Mr. Mangrove Crab’s work, so that’s not much salt used over time versus the complexities of a nitrogen cycle filtration system. Now that I have test strips I’ll know how often that should be.

Again, shutting off the bubbler, wiping the bottom to free the slime that’s growing there (I don’t think I’m getting it all, so if it’s food it’s still present somewhat), then fluffing it to one side and siphoning it up w/airline tubing seems to clean the nitrite creating stuff pretty well. Shining a light in one corner for them to aggregate near keeps most of them out of the way, and I shine it again in the gunk glass I siphoned into to get the ones I accidently sucked up back into the tank.

One interesting note is that after the “D-Day” day 5 die off the herd that is left swims less and congregates on the bottom on the side facing the window. Their movement is now more like a thousand little frogs hopping around in the herd at the bottom of the tank. Some still swim, but majority is doing the new movement. I can see a bit of their tail now, but no major growth change.
Possible theories: 1.) they molted on day 5 and many didn’t make it through. 2.)Nitrites killed them at this stage and they haven’t molted yet. 3.) Maybe everyone’s dies at day 5 because they have 5 days of food stored in them or because when they molt the new contact with water conditions isn’t right for them…
Interesting to note that my water isn’t the right ppm for salt, but half have survived… I thought I saw somewhere it should be ocean water (1.020-1.024, and somewhere else 1.010. hmm. Wish I had more tanks to test all 3 salinities.

My hope is that with more postings from folks that are having success we can all help each other out to solve this mystery and not make silly statements like it taking hundreds of thousands of dollars to get the right water conditions for this. heh heh that one still makes me chuckle. I bet it’s possible.

Folks could try their filtration systems in their nursery tanks with a big ball of fiber-fill around the intake (intake on LOW!) with super fine cloth over that. That makes the drag into the intake almost nothing. You’ll see if the babies are being pulled onto it, it’s too strong still… but I still am having great water results with one gallon of water in a two gallon tank.
Best… Laurie

The Post – Scarlett O’Hara and her molted ghost

January 31, 2008

fiddler-crabs-242.jpgfiddler-crabs-252.jpgfiddler-crabs-254.jpgfiddler-crabs-287.jpg

Well, I’ve been promising pictures of the fiddler family members so let’s start with Scarlett O’Hara and her recent molt.

The first picture shows her just after she molted, climbing down the side of the water filter. I love how they can have their eyestalks going in two directions as they move about. If you look closely, the right eyestalk is vertical, while the left one is scanning in a horizontal direction. Off to the right in the picture, her whitish “ghost” sits, discarded. With the water currents waving the legs and claws back and forth, the discarded shell looked eerily alive.

The second one shows her nestled safely under the water filter and behind her old self (fuzzy part in front), where she rested for some time. It is not unusual for newly molted crabs to hide. Their new shells are soft at this point and they feel vulnerable. So they hide to give themselves protection as their new shell hardens.

The third picture though a bit dark, gives you a close-up view of the ghost version. You can see the empty leg, claw and eyestalk casings. I will add that the “ghost of Scarlett O’Hara” no longer exists. Admiral Byrd ate it. Perhaps he is getting ready to molt. Crabs often eat discarded shells to reclaim the calcium the shells contain.

Last picture shows Scarlett O’Hara when she finally emerged from under the water filter. Still a bit tentative, she sought shelter under an overhang on the Live Rock.

These were all from Saturday, the 26th. Today she was back to her old self, running around the tank and eating. Maybe I can get a lighter picture of her now that she’s out and about. I need to work on “lighting” issues for these, but still, not bad considering no flash and long exposure times.

Soon to come, Admiral Byrd and Melanie Hamilton!!!

The Post – There really IS a deeper process at work here

January 29, 2008

Some lighter fare on tap in the next few days…photos of Admiral Byrd waving his claw, Scarlett O’Hara and her molted ghost self, and . . . even the ever reclusive Melanie Hamilton! Finally caught her sitting on her “front porch” – ie the open hole in the Live Rock – at 6:30 this morning. Stay tuned.

For today: So does staring into a tank of fiddler crabs, never mind shooting photographs of them at 6:30 in the morning, REALLY have anything to do with writing?

The answer? It all depends. You mean you wanted a definite answer? Here’s a clue – Mindfulness and heart. Still confused?

Simply said, it’s what you bring to the situation. You can sit there and stare at them and your mind could be on the bills, what you’re going to buy at the grocery store, what you could be doing instead of sitting in front of a tank of crabs. You could sit there and nod, “Yup, they’re crabs. Eyestalks. Sideways walk. They all look alike. So what?”

Or you can sit there and notice that Melanie Hamilton has much tinier front claws than Scarlett O’Hara. That she is timid and almost never comes out of her crevice in the live rock…except early in the morning when the sunlight streams into the kitchen and hits that side of the tank. She loves to sit in the sunlight on her front porch. Or that Scarlett O’Hara, who normally never stops eating and never hides out, suddenly after molting has stopped eating and has refused to move from under the water filter. Or that Admiral Byrd, normally fearless, crawled into his tunnel cave after discovering Peter Lorre’s lifeless body and started twitching and wouldn’t eat.

The difference is how you watch. Are you fully present? And did you bring your heart? The heart makes all the difference.

I am taking an online spirituality course with some friends, studying the writings of Thich Nhat Hanh (pronouced Tick Naught Han). He is an 80-year-old Vietnamese monk who endured the horrors of the Vietnam War, came to America to try and stop it, and was deemed a threat by both the Communist and non-Communist regimes in Vietnam. While searching for peace, he found himself everybody’s enemy. He was nominated for the Nobel Peace Prize by Dr. Martin Luther King, Jr. for his efforts to stop the war, and in his later years one of his many healing works has been to heal the souls of former American servicemen haunted by that war. Having lost close personal friends to that war, he has every reason to hate Americans. Instead he’s spent half his life healing people around the world, including Americans.

He tells a story in one of his books about a young man who wanted to learn to draw lotus flowers. So he went to a master to apprentice with him. The master took him to the lotus pond and left him sitting there for 10 days. Can you imagine in today’s busy world, signing up for lessons to learn something quickly, only to be left sitting at a pond for 10 days?

The real essence was what the young man did with that time. He could have gotten impatient (something I know a lot about), and grumbled, sighed, walked away, went shopping, took a nap, try to do something USEFUL with that time instead of just sitting there. Instead for the whole time, he watched the flowers bloom when the sun was high. He watched them close into buds at night. He watched one flower wilt and drop its petals into the water, then studied the stalk, the stamen and the rest of the flower.

On the 11th day the master returned and brought him a brush to paint with. Although his picture showed his naivete of technique, a childish style, the lotus he painted was beautiful. Deep beauty shone from the painting. He had become the lotus and as such, even with poor technique, he could paint something that moved another’s heart.

Mindfulness and heart. He paid attention to the lotus. He worked from his heart. Writing, really good writing that moves people’s souls, comes from the heart, not the brain. You can write a technically beautiful book but without heart it’s a sterile desert emotionally.

I started out watching fiddler crabs not sure what to expect. I certainly didn’t expect them to have personalities and subtle differences in appearance and actions. And I most certainly didn’t expect to feel such upset as I watched Peter Lorre tumble off his rock, dead.

With any luck, at least a little part of me has become the crab. With just a little more luck, maybe that crab heart will come through in my book. I’d trade a whole bunch of technical expertise for just a handful of heart.

By the way, if of interest to read a good summary of Thich Nhat Hanh’s life, check out this link at Parallax Press.

http://www.parallax.org/about_tnh.html

The Post – EXTRA! Scarlett O’Hara molted!

January 26, 2008

This warrants a quick extra post today….NOW I understand why Scarlett O’Hara spent almost 10 days in the Live Rock – she must have been preparing to molt. I don’t know if she stayed in the Live Rock cavity because she felt vulnerable, or because being near it probably gave her extra calcium (it leaches out of the rock into the water), and she needed extra calcium for the new shell she was creating under her old one.

I assumed she must have molted inside the rock, though given her size it had to be tight quarters. I also wondered why if she was back to her old self, she spent the last 24 hours hiding under the water filter and not eating. Neither thing is like her at all. She generally does not hide, and she ALWAYS eats.

Anyway, I came in carrying groceries and my husband said to me “You are going to want to see this.” We both moved quietly and carefully to the side of the tank. There, underneath the filter sat TWO perfect Scarlett O’Haras – the real one with her new shell, and the “ghost” one…a perfect shell of her old body just sitting there underneath her.

SO!! We have successfully seen one of our crab children molt. How exciting!