General
|
Name: |
Shannon Pechauer ( shannpeach ) Site: Marine Breeding Initiative (MBI) |
Species: |
Bursatella leachii ( Class: B, Points: 25 )
|
Link to Journal: |
http://www.mbisite.org/Forums/tm.aspx?m=81182
|
Hatch Details |
Spawn Date: |
03/17/2013
|
Spawn Time of Day: |
Not noted, assume morning based on later spawns |
Hatch Date: |
03/23/2013
6 Days After Spawn
|
Hatch Time of Day: |
began in the afternoon, continues until egg string is empty
|
Where Hatched: |
500mL square bottom plastic container filled with approximately 350mL of tank water |
Eggs Removed Pre-Hatch: |
Yes
|
Larvae Removed Post-Hatch: |
Yes
|
Yolk Sac: |
Unable to Tell
|
# Hatched |
not counted, over 300. Large spawns likely have 1,000 |
# Not Hatched |
less than 50 |
Larvae Size |
160uM shell size |
First Food: |
live phytoplankton |
Larvae Description:
( Do larvae have eyes, mouth, gut, attracted to light, etc?) |
Larvae have a shell and look like small snails under the microscope. To the eye they look even smaller than rotifers. They actively remain in the water column without aeration. |
Tank Parameters
|
Temperature: |
70 ° F
|
PH: |
not measured
|
Specific Gravity: |
1.020
|
Size: (Gallons) |
500mL to 1000mL |
Dimensions: |
3in X
3in X
7in
|
Lighting:
|
Ambient sunlight and 2-bulb fluorescent strip light |
Lighting Schedule:
|
Continuous |
Other Details |
Other Information: |
Egg strings can be removed shortly after being laid and make it to hatch if they have a small amount of water movement (i.e. rigid airline). Once hatching has begun, it is best to remove the airline since the veligers easily fling out of the container when the bubbles pop. I use an eye dropper to gently baste the egg strings during hatching, which can take over 10 hours depending on the size of the egg string.
I have also found that if the egg string is cut into smaller sections (I would recommend a razor blade over scissors) the hatch can occur more quickly since there are more "outlets" from the egg string for the veligers.
Hatched veligers should be placed in a container with a narrow mouth and the container should be completely filled, then covered with parafilm to eliminate the surface area (they become trapped and die).
The 1L bottle is 3.5in x 3.5 in x 8.5 in. |