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Thread: Breeding Journal Berghia verrucicornis

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    Copepod Geek THEJRC's Avatar

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    Breeding Journal Berghia verrucicornis

    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: Berghia verrucicornis
    Social Structure: unknown
    Size of Individuals: 1/2 inch
    Age of Individuals: unknown
    Date added to Tank: 10/28/10

    Broodstock Tank Details
    Size of Tank: 10 gallon
    Substrate Details: bare bottom
    Filtration Details: airlift sponge filter
    Water Changes: once weekly, 5 gal
    Water Temperature: 78*F
    Lighting: ambient
    Lighting Cycle: N/A
    Other Tank Inhabitants: Aiptasia

    Broodstock Feeding Details
    Food Types: Aiptasia
    Feeding Schedule: Encounter rate (constant)

    Spawning Details
    Date of First Spawn: 10/28/10
    Spawn Time of Day: 6:00 PM
    Dates of Consecutive Spawns: 10/29/10, 11/5/10
    Courtship Details: When encountering each other they "wrestle" gently for a short time to fertilize and then go on their merry way, egg laying process is fairly slow, the nudibranch deposits the eggs in a long circular chain over a period of several hours in the dark.
    Egg Size: Tiny approx 100um ea. layed in a chain approx 2mm long
    Egg Color: white
    Egg Count: unknown at this time

    Hatch Details
    Hatch Date:
    Hatch Time of Day:
    # Days after Spawn:
    Larvae Description:

    Larval Tank Details
    Temperature: 80
    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
    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.
    Last edited by THEJRC; 11-06-2010 at 10:06 AM.
    ~J


  2. #2
    Copepod Geek THEJRC's Avatar

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    This journals a little early, in preparation for the species approval but I wanted to get my notes out there ahead of time! I am culturing these guys in a 10 gallon tank which is divided in two with a plexiglass sheet. This is the tank I was attempting to raise Mysidopsis bahia (Americamysis sp.) in prior. one side of the tank has a light covering of large live rock rubble that was cooked down to avoid contaminates, this section was seeded with several Aiptasia from my main systems sump. The intention is to be able to culture the aiptasia and easily move them back and forth using the live rock chunks for transport.

    The Berghia themselves are on the other side of the divider where an overflow is screened with 100um mesh, there is a sponge filter on the berghia side (heater on aiptasia side currently). an unscreened airlift is on the aiptasia side to slowly circulate water between the sections. The tank is capped with a glass top to reduce impact of evaporation. This system receives only ambient light to help appease the nocturnal habits of the berghia. Aiptasia are fed with spectrum filter feeder powder with an amount consisting of one salifert spoon every other day.

    Total count of initial broodstock was 6, at this time I can only find 5 (10/30/10 1130)

    I didnt even get to acclimate these guys before they layed eggs!! in the bag no less! The eggs were moved to their broodstock tank.



    Here they are feasting on an aiptasia that I placed in the bag during acclimation



    bad shot here due to where the eggs are but here is a second string of eggs layed in the broodstock tank

    ~J


  3. #3
    Copepod Geek THEJRC's Avatar

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    I finally had good luck after being hosed the last few weeks with work and everything else, I lifted the towel shrouding my Berghia system to check on the little guys and caught one in the process of depositing eggs on the glass!! This is excellent news for sure as now I have an exact time, and exact conditions of the spawn for my records!! Spawning occurred 11/5/2010 at 7:47 PM most of the eggs were deposited by the time I noticed however the nudibranch was still in the process of depositing 2 hours later, this tells me the egg deposit takes a very long time.



    ~J


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    Copepod Geek THEJRC's Avatar

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    Day 3 egg development

    ~J


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    Joe very nice and congrats on the successful spawning. I take it that the Berghias spawn in total darkness?
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    subscribed! ;-)

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    Just another dude torquehound's Avatar

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    Pretty cool!
    Jason Davis
    'No arsenal, or no weapon in the arsenals of the world, is as formidable as the will and moral courage of free men and women.'
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    Pimped out 40g breeder mixed reef, 20g sump, with ASM Mini G

  8. #8
    looking forward to the next update! Thanks for sharing

  9. #9
    Copepod Geek THEJRC's Avatar

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    Digging through the archives this morning as I have to plan for a trip end of month and someones got to take care of these things for a week while I'm gone, I dug up this little gem of a paper

    http://www.breedersregistry.org/Repr...berghia_bb.htm

    nice protocol on culture, but what I wanted to see was the method they are using to culture aiptasia (I am trying to keep the system as clear of predators such as amphipods as possible).
    ~J


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