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Breeding Journal, Species: Cerithium atratum
Wednesday, September 3, 2014 1:57 PM
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Breeding Journal DataSheet This first post should be updated regularly to include new information as events take place or changes are made to your system General Species: Cerithium atratum Social Structure: about a half dozen grazing in my frag tub Size of Individuals: 1 - 1.5" in length Age of Individuals: Unknown, added about 6 months ago Date added to Tank: March 2014? Broodstock Tank Details Size of Tank: 9 gallon Rubbermaid tub Substrate Details: Bare bottom Filtration Details: Plumbed to main reef system Water Changes: 25-30% changed in system monthly Water Temperature: 79 degrees F Lighting: Led Lighting Cycle: 12 hrs on, 12 off Other Tank Inhabitants: 2 Astrea snails, 1 percula clownfish Broodstock Feeding Details Food Types: Just the nuisance hair algaes, cyano. Not specifically fed Feeding Schedule: Ad lib Spawning Details Date of First Spawn: 9/2/14 Spawn Time of Day: Unknown, not witnessed Dates of Consecutive Spawns: 9/15/14, seem to find egg strands at least once a week Courtship Details: None seen Egg Size: Very tiny; individual eggs invisible to naked eye Egg Color: Egg strands are cream colored Egg Count: many hundreds, probably over a thousand (not counted) Hatch Details Hatch Date: 9/5/14 Hatch Time of Day: uncertain, the veligers were observed at 1:00pm # Days after Spawn: 4 Larvae Description: Larval Tank Details Temperature: Size of Larval Tank: Substrate Details: Other Tank Decor: Filtration Details: Lighting: Lighting Cycle: Water Changes: Larval Feeding Details Food Types: Feeding Schedule: Metamorphosis/Settlement Date of Settlement Start: Days after Hatch: Date of Settlement End: Description of Fry: Grow-Out Tank Details Temperature: Size of Grow-Out Tank: Substrate Details: Other Tank Decor: Filtration Details: Lighting: Lighting Cycle: Water Changes: Size at Transfer: Age at Transfer: Grow-Out Feeding Details Food Types: Feeding Schedule: Additional Information (No Pictures or Videos in the Section Please) Miscellaneous Information: You will be required to provide photographic evidence in this thread of each event submitted for the MBI Program. If your thread does not contain these photos the MBI Committee will not be able to approve your reports.
<message edited by Lrood on Wednesday, March 18, 2015 7:29 PM>
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Re: Breeding Journal, Species: Cerithium sp.
Wednesday, September 3, 2014 2:03 PM
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I happened to notice these egg strands on the side of my frag tub this morning, and am pretty sure they are from my ceriths. I'm not certain what species I have. I gently scraped on of the strands off the side a took a couple of pics under the scope. They were then placed in a small plastic container back in the frag tub where I can see if any hatch (edited - after further review & discussion, I am listing these as C. atratum) 32x 100x
<message edited by Lrood on Sunday, September 14, 2014 8:10 PM>
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Re: Breeding Journal, Species: Cerithium sp.
Wednesday, September 3, 2014 2:28 PM
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An adult cruising through the hair algae. I think these are C. atratum, but would like some other opinions before I post the species in my report.
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Re: Breeding Journal, Species: Cerithium sp.
Wednesday, September 3, 2014 8:01 PM
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I'll chime in here... I'm thinking either eburneum or muscarum instead of atratum. The atratum have more of a "spike" formation in the circles. With a better picture of the entire shell, I could make the difference mabye. But if you want to try, I'm going off of this photo:
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Re: Breeding Journal, Species: Cerithium sp.
Friday, September 5, 2014 2:45 PM
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Looks like hatching has occurred. I put the egg cluster in a well slide under the scope today and noted veligers swimming around. I took a couple of short iPhone videos that I will edit and post layer.
<message edited by Lrood on Friday, September 5, 2014 7:43 PM>
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Re: Breeding Journal, Species: Cerithium sp.
Saturday, September 6, 2014 1:25 PM
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Here's a link to a shaky iphone video - I was trying to keep this one in focus and hold the iphone (need a microscope adapter!). I hope to get some better images up soon. https://www.youtube.com/w...-qvcnm40Z0QZqxLxh6OBaw btw - can someone remind me how to actually embed the videos rather than use a link?
<message edited by Lrood on Saturday, September 6, 2014 7:27 PM>
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Re: Breeding Journal, Species: Cerithium sp.
Sunday, September 7, 2014 8:21 PM
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Re: Breeding Journal, Species: Cerithium sp.
Sunday, September 7, 2014 8:35 PM
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My best guess would be atratum, perhaps Andy could chime in if we're lucky?
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Re: Breeding Journal, Species: Cerithium sp.
Sunday, September 7, 2014 9:01 PM
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I think that's my best guess too. Thanks for the help. We'll see if there are any other opinions.
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Re: Breeding Journal, Species: Cerithium sp.
Sunday, September 7, 2014 9:12 PM
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A short vid of a day 2 larva - a bit more stable. Still can't get them to embed properly, so I supplied the link as well... [video]https://www.youtube.com/watch?v=RCsFkb-DyKs[/video] https://www.youtube.com/watch?v=RCsFkb-DyKs
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Re: Breeding Journal, Species: Cerithium sp.
Wednesday, September 10, 2014 2:39 PM
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Sure does look like atratum to me, too. Good luck with them!
--Andy, the bucket man. "Not to know the mandolin is to argue oneself unknown...." --Clara Lanza, 1886
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Re: Breeding Journal, Species: Cerithium sp.
Friday, September 12, 2014 12:51 PM
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Well, as of yesterday, I could not find any live veligers, and also no settled snails. I did find some empty tiny veliger shells in the debris off the bottom of their container. I think next time I'll set up a small kreisel. Also, thanks for the confirmation on the species.
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Re: Breeding Journal, Species: Cerithium sp.
Monday, September 15, 2014 7:21 PM
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Another egg cluster found today and moved to a separate container - I hope to get a little kreisel set up before they hatch.
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Re: Breeding Journal, Species: Cerithium sp.
Monday, September 15, 2014 8:09 PM
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Good luck this time around! I currently have no isochrysis at the moment, only dunalia, so I'm going to run some tests with mine. Any chance you could post a picture of the kreisel you set up (Whether before or after the hatch)?
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Re: Breeding Journal, Species: Cerithium sp.
Wednesday, September 17, 2014 5:11 PM
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For lack of a better idea right now, I have placed the eggs in my 53 micron sieve and set in in my sump propped up so the top is out of the water, and a rigid airline for gentle bubbling. The sieve screen on the bottom will allow water exchange, and I will add a few ounces of Isochrysis culture twice a day. This way I can also concentrate the volume down (by simply raising the sieve nearly out of the water) to obtain samples for inspection. If I get a good number of veligers, I will transfer them to a container large enough to heat and perform water changes (I'm thinking of my 2 gallon fishbowl). Hard to work with something I really can't see!
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Re: Breeding Journal, Species: Cerithium sp.
Thursday, September 18, 2014 4:07 PM
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I lifted the sieve up until just the bottom half inch was still in the water, pipetted out a few drops and took a look under the scope. Lots of veligers swimming around! Right now I will keep them in the sieve setup and keep adding iso twice a day to keep the water tinted. If they stay alive more than 4-5 days, I'll transfer them to a separate kriesel. Fingers crossed.
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Re: Breeding Journal, Species: Cerithium sp.
Saturday, September 20, 2014 9:57 AM
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Still have active veligers swimming around this morning when I checked a sample under the scope. I believe this is about 3 days post hatch.
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Re: Breeding Journal, Species: Cerithium sp.
Tuesday, September 23, 2014 8:21 AM
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Nice! I think I'm going to try and mimic this and see how it does, one thing I talked to Andy about was that perhaps the veligers might need a hormone released by the parents to settle, and keeping them in a separate container might not work. Good luck with this batch!!!
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Re: Breeding Journal, Species: Cerithium sp.
Tuesday, September 23, 2014 7:17 PM
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I plan to thoroughly check my sieve tomorrow for veligers. I last checked on 9/21 and still found some. The past 2 days have been too busy, so I have just been adding iso and leaving things be. This sieve is in the same tank as the adults, so the larvae should be in contact with any substances released by the adults. I'll post an update tomorrow.
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Re: Breeding Journal, Species: Cerithium sp.
Wednesday, September 24, 2014 3:33 PM
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Ok, after thoroughly swishing the sieve around to get as much as possible in suspension and concentrating the contents into the bottom, I emptied this into a small container and backwashed the sieve into this container as well. I checked several samples under the scope and found lots of amphipods and other bizarre micro crustaceans I have never seen, as well as what appear to be tiny nematodes of some sort. Also the usual ciliates and algaes that I have been adding. I thought I was going to come up empty on veligers though, but did come across several in the 3 samples I checked. Below is a short video of one that was separate from the debris. I put all of the contents back into the sieve and added more algae. I believe this is day 6 or 7 for the veligers.
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