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Reproduction - breeding Lysmata wurdemanni
After I broke my teeth on breeding L. amboinensis and Stenopus hispidus, here I am embarked on a tentatide breeding Lysmata wurdemanni (Peppermint Shrimp), supposedly "easier"!
Also, do not forget anything for my experience, and to enjoy it those who are tempted, here is the flow of that holding overnight.
Technique:
Kreisel tray, personal design with some bucket and two glass plates, all in a small tray with heating, sparging (except kreisel part) and circulation pump. New half water, half of my water main tray.
Recovery of larvae: a big thank you to the mag Botanic Varennes-Vauzelles who has "lent" me a shrimp L. wurdemanni grained, time to recover larvae. Not that I did not buy it, but I did not have room to accommodate it in my tanks! Briefly, recovering said shrimp Thursday morning, 03/04/2014. Implementation directly into the kreisel to avoid decanting, always dangerous to the integrity of the larvae.
During the implementation (to 9:30 in the morning), lighting kreisel was off.
Then lighting during 12H, from noon to midnight.
The larvae are born in the next night or the night of 3 to 4 April.
There was already rotifers in the tank for 2 days.
From April 4 in the morning, adding green water and brine shrimp nauplii. Green water is a personal culture of Nannochloropsis.
Adding green water on the same day in the evening + add Artemia nauplii.
Saturday, April 5: Adding green water in the morning and evening. Adding Artemia nauplii in the morning, afternoon and evening (unfortunately I have a very bad strain of brine shrimp eggs with a hatchability ridiculous ... hence the frequent addition but small quantities of nauplii). Adding a bit of enriched rotifers for 20 minutes before distribution.
Adding the evening a small amount of Rotirich: a big "measuring spoon" of Tetra Dennerle or tests? (The utensil with a small and a big spoon ends).
Observation: it seems to me that the larvae have changed in appearance. The eyes are very far now.
Sunday, April 6: 1 Water change: 1/3 of the water in the tank larvae filtered to recover nauplii and rotifers, replaced by 1/3 of water from my main tank. Nitrate levels ± 10mg / l in water tray larvae ... I have not tested the water from my main tank ... :-(
Adding green water in the morning.
Adding a Rotirich evening dose.
Mon, April 7th 2014
Adding green water in the morning and evening
Adding a large amount of Artemia nauplii tonight
J've seen some larvae held a Nafplion
Stop the pump kreisel few seconds to better see the larvae eat the nauplii. But very quickly, shrimp larvae were collected near the light and seemed to fight like cats! To avoid that they get hurt or they do canibalisent -> restart the pump!
I am very surprised at the number of larvae alive. Impossible to count them of course but I'd say between 100 and 200!
Logbook of 08/04/2014:
Nothing fancy! Adding green water this morning upon awakening + add Artemia nauplii.
Adding green water this afternoon + Artemia nauplii.
Tonight: water change (1/3) by filtering changed to recover the Artemia nauplii and rotifers water.
Wed April 9, 2014
Larvae in kreisel:
An isolated larva
Fri April 11, 2014
After 1 week, the larvae still alive. I saw no corpse ... of course, starting with the green water, if there was, it was impossible to see them ... so I do not know if there has had or not.
I stopped the green water additions for 3 days. I filter the remaining rotifers to put them in my main tank, but as there were a few million, there will always be!
Lysmata larvae are attracted to light. As soon as I change the light place, they follow it in a few seconds.
I have always struggled with my nauplii. So I compensate with feed powder for fry, but it pollutes the water. I started with a bottle several grams of Artemia cysts to hope to have enough .. verdict this afternoon!
Some pictures of today (4/13/2014)
April 15
RAS! Adding in the morning noon and night nauplii.
Change of water (50%)
There is a delay or two hoppers, size level, compared to the other.
April 16
Adding nauplii still 3 times a day
Waste Removal in kreisel
Larva, much smaller than the other died => removal of the corpse.
Otherwise, RAS!
April 17:
Discovery of two bodies ... So, very large water change and cleaning the tray that contains the kreisel. Y'en needed!
Adding nauplii.
Some videos:
April 29: The morphology does not change with the naked eye.
I continue feeding the nauplii and crumbled flake.
Changes of water daily to prevent a rise in nitrite.
I prepared a "double wall" with mosquito netting for the day when they will be ready to join the big bath in a tank 120 l, in order to separate Stenopus hispidus are in this tray and n 'would make mincemeat if they could reach!
1st May: yesssssss
Last night, the first feeding with frozen meat diet: some mysis cut into small pieces.
This morning, when that first feeding of the day with nauplii, what do I see? 3 exuviae ... so I decided to do a water change and a big cleaning. Drain 3/4 of the tank containing the kreisel. Kreisel dump into a clean bucket containing a little water .... kreisel 3 mini real shrimp! They therefore started to make their final moult! These mini shrimp are flat on their feet, stand at the bottom of the bucket and have their eyes on the head and not at the end of appendices.
Thorough cleaning of the tank and kreisel. Replacing larvae and shrimp in the real kreisel. Feeding by nauplii and chopped mysis.
Tomorrow, I think there will be more "real" shrimp.
---> 26 days to get the form from shrimp larvae ;-)
Future tray engrossment:
With a double wall (plexi and mosquito netting) to separate mini shrimp Stenopus hispidus already in the tray:
May 5:
Wanting to have the heart net, I separated the larvae and mini shrimp tonight!
Result: 32 mini shrimp joined their tray engrossment!
The remaining larvae continue to rotate in the kreisel ;-)
And here are some photos:
The same with a touch of levels: red bands appear much better than the naked eye!
May 10:
New separation of larvae and mini shrimp kreisel this afternoon.
-> 43 mini shrimp come join their friends in the tray of enlargement.
Results so far: 32 +43 = 75 shrimp in the tank roughing and 59 remaining in the larvae kreisel!
May 15
Additional shrimp 24! Remaining 35 larvae.
Results to date (J +42): 99 + 35 remaining shrimp larvae
May 23:
12 additional shrimp and the remaining 16 larvae.
I sacrificed the remaining larvae (put in the main tray ...)
Final Results J 50: 111 small shrimp!
Engrossment
111 shrimp are now within the tray engrossment. Flushing with water from the main tank at all times. Tray 110 liters, divided into 1/4 + 3/4 approximately. 3/4 contain the mini shrimp and a big "ball" of Cauperpa serrulata. Layer of limestone sand about 5-6 cm, filled to the type of fire sp Eurythoe few snails (Euplica varians) and many Gammarus sp.
Cohabitation and shrimp Gammarus sp is going very well.
Some are larger than others. The biggest visible, is about 4 cm (the tip of the tail to the tip of the rostrum, excluding antennas!).
Weekly feeding:
Glitter crumbled
Artemia nauplii
1 to 2 times per week (alternate)
1 mold fresh, cooked just 10 seconds in the microwave, cut into 2 pieces distributed at 2 different locations in the bin
1 tablet for groundfish
1-2 shrimps cooked and peeled, cut into small pieces and scattered throughout the tank