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Striper and Hybrid spawn
#15029680
03/28/24 12:58 PM
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Joined: Dec 2003
Posts: 36,708
Allison1
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My daughter volunteers at the PK fish hatchery and last evening they spawned Stipers and Hybrids. I was up there fishing so I went and watched the initial process. They have to wait on the fish till its time and it started at 7 and finished up just after midnight. In 48 hours there should be new swimmers. Once they spawn the Stripers will be sent to the San Marcos hatchery to be grown to 1 1/2โ when they will be stocked in Texas lakes.
In the first hour the eggs that did not get fertilized turn white and rise up in the containers. Some will run out and be filtered out. They also start vacuuming the unfertiled eggs so the water does not degrade. There will be someone there 24 hours a day constantly monitoring the water flow so that the eggs constantly get fresh water. Too much water and the eggs start rising and could be lost so someone is adjusting water flow as needed.
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Re: Striper and Hybrid spawn
[Re: Allison1]
#15029703
03/28/24 01:22 PM
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Joined: Dec 2003
Posts: 36,708
Allison1
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This is a few females in 5 tanks waiting to be used. The fisheries manager inspects them to see if they are ready to spawn. I was told they have a one hour window so its wait until the fish are ready. Each of the females used are tagged with a colored ribbon, held in 5 tanks during the process. When they spawn each fishโs eggs are sized and counted. They measure the volume of the container to estimate the number while a tech takes a sample to measure the size of the eggs under a microscope. He will later count the eggs in a small sample of each fish.
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Re: Striper and Hybrid spawn
[Re: Allison1]
#15029722
03/28/24 01:33 PM
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Joined: Dec 2003
Posts: 36,708
Allison1
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This is Mike. He is vacuuming the white unfertilized eggs. The tube is held a couple inches above the dead eggs and they are sucked out so they do not contaminate the water. Any biomass can degrade the water. The water used is well water and its kept at a certain temp and several factors like ph and do are constantly being watched.
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Re: Striper and Hybrid spawn
[Re: Allison1]
#15029742
03/28/24 01:47 PM
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Joined: Dec 2003
Posts: 36,708
Allison1
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This is 1/4 of the containers. Water is sent down a tube to the bottom of the container and moves up through the eggs. Initially the overflow runs out and the water is disposed of until the milt is gone, then the overflow is reused. The overflow is screened to catch any biomass that can degrade the water. Most of it is the white unfertilized eggs.
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Re: Striper and Hybrid spawn
[Re: Allison1]
#15029744
03/28/24 01:48 PM
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Joined: Feb 2006
Posts: 3,623
gborg
TFF Team Angler
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Joined: Feb 2006
Posts: 3,623 |
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Re: Striper and Hybrid spawn
[Re: Allison1]
#15029747
03/28/24 01:51 PM
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Joined: Dec 2003
Posts: 36,708
Allison1
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While I was there 8 or 9 people were there. It took that many people to do the work and document it all.
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Re: Striper and Hybrid spawn
[Re: Allison1]
#15029852
03/28/24 03:58 PM
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Joined: May 2009
Posts: 10,358
Texan Til I Die
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Went through there several times when I was with the BRA. It's an impressive operation.
"If ever time should come, when vain and aspiring men shall possess the highest seats in Government, our country will stand in need of its experienced patriots to prevent its ruin." - Samuel Adams
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Re: Striper and Hybrid spawn
[Re: Allison1]
#15030658
03/29/24 01:05 PM
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Joined: Nov 2014
Posts: 4,432
GTrigg
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Very interesting, thank you for sharing...
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