SOPU MARICULTURE CENTER TONGA
MONTHLY WORKING PLAN FOR GREEN SNAIL SEED PRODUCTION
JANUARY | 10 | 20 | 30 |
Spawning | ||||||
1. Diatom culture | ||||||
(1) | Preparation of Substrate | 2 days | ||||
(2) | Preparation of Tank | 1 day | ||||
(3) | Preparation of seawater/Fertilizer | 1 day | ||||
(4) | Cultivation of diatom | 2 weeks | ||||
2. Spawning | ||||||
(1) | Selection/cleaning of the spawners | 1 da y | ||||
(2) | Packing stimulation | 1 day | ||||
(3) | UV stimulation/Fertilization V | 6 hours | ||||
(4) | Larval rearing | 3 – 4 days | ||||
(5) | Observation of larval development | 4 days | ||||
3. Larval settlement/Juvenile rearing | ||||||
(1) | collection of larvae from the larval rearing tank and counting of number of larvae | 1 day | ||||
(2) | Transference of larvae to the larval settlement tank. | 1 day | ||||
(3) | Checking swimming larvae. | 2 – 3 days | ||||
(4) | Juvenile rearing | |||||
4. Routine Works | ||||||
FEBRUARY | 10 | 20 | 29 |
Spawning | |||||
1. Diatom culture | |||||
(1) | Preparation of Substrate | 2 days | |||
(2) | Preparation of Tank | 1 day | |||
(3) | Preparation of seawater/Fertilizer | ||||
(4) | Cultivation of diatom | 2 weeks | |||
2. Spawning | |||||
(1) | Selection/cleaning of the spawners | 1 day | |||
(2) | Packing stimulation | 1 day | |||
(3) | UV stimulation/Fertilization V | 6 hours | |||
(4) | Larval rearing | 3 – 4 days | |||
(5) | Observation of larval development | 4 days | |||
3. Larval settlement/Juvenile rearing | |||||
(1) | collection of larvae from the larvalrearing tank and counting ofnumber of larvae | 1 day | |||
(2) | Transference of larvae to the larvalsettlement tank. | 1 day | |||
(3) | Checking swimming larvae. | 2 – 3 days | |||
(4) | Juvenile rearing | 1st spawning | |||
2nd spawning | |||||
(5) | Size measurement each spawing group | 1 day (1st spawing) | |||
4. Routine Works | |||||
MARCH | 10 | 20 | 30 |
Spawning | ||||||
1. Diatom culture | ||||||
(1) | Preparation of Substrate | 2 days | ||||
(2) | Preparation of Tank | 1 day | ||||
(3) | Preparation of seawater/Fertilizer | 1 day | ||||
(4) | Cultivation of diatom | 2 weeks | ||||
2. Spawning induction | ||||||
(1) | Selection/cleaning of the spawners | 1 day | ||||
(2) | Packing stimulation | 1 day | ||||
(3) | Uv. stimulation/Fertilization | 6 hours | ||||
(4) | Larval rearing | 3 – 4 days | ||||
(5) | Observation of larval development | 4 days | ||||
3. Larval settlement/Juvenile rearing | ||||||
(1) | collection of larvae from the larval rearing tank and counting of number of larvae | 1 day | ||||
(2) | Transference of larvae to the larval settlement tank. | 1 day | ||||
(3) | Checking swimming larvae. | 2 – 3 days | ||||
(4) | Juvenile rearing | 1st spawning | ||||
2nd spawning | ||||||
3rd spawning | ||||||
(5) | Size measurement | 1 day (1st/2nd spawing) | ||||
4. Routine Works | ||||||
APRIL | 10 | 20 | 30 |
1. Larval settlement/Juvenile rearing | ||||||
(1) | Juvenile rearing | 1st spawning | ||||
2nd spawning | ||||||
3rd spawning | ||||||
(2) | Size measurement (including each intermediate Individual) | 1 day (1st/2nd/3rd spawning) | ||||
2. Intermediate culture | ||||||
Preparation of the intermediate culture cages | ||||||
PHASE 1 | 1st spawning | |||||
3. Routine Works | ||||||
MAY | 10 | 20 | 30 |
1. Larval settlement/Juvenile rearing | ||||||
(1) | Juvenile rearing | 2nd spawning | ||||
3rd spawning | ||||||
(2) | Size measurement | 1 day (2nd/ 3rd spawning) | ||||
2. Intermediate culture | ||||||
(1) | PHASE I | 1st spawning | ||||
(2) | Size measurement | 1 day (1st spawning) | ||||
3. Routine works | ||||||
JUNE | 10 | 20 | 30 |
1. Larval settlement/Juvenile rearing | |||||||
(1) | Juvenile rearing | 2nd spawning | |||||
3rd spawning | |||||||
(2) | Size measurement | 1 day (3rd spawning) | |||||
8 | |||||||
2. Intermediate culture | |||||||
(1) | PHASE I | 1st spawning | |||||
2nd spawning | |||||||
(2) | PHASE II | 1st spawning | |||||
(3) | Size measurement (including PHASE II juvenile) | 1 day (1st/2nd spawning) | |||||
3. Routine works | |||||||
JULY | 10 | 20 | 30 |
1. Larval settlement/Juvenile's | |||||||
(1) | rearing | 3rd spawning | |||||
(2) | Size measurement | 1 day (3rd spawning) | |||||
2. Intermediate culture | |||||||
(1) | PHASE I | 1st spawning | |||||
2nd spawning | |||||||
(2) | PHASE II | 1st spawning | |||||
2nd spawning | |||||||
(3) | Size measurement including PHASE II Juvenile | ||||||
1 day (1st/2nd spawning) | |||||||
3. Routine works | |||||||
AUGUST | 10 | 20 | 30 |
1. Larval settlement/Juvenile rearing | 3rd spawning | ||||||
2. Intermediate culture | |||||||
(1) | PHASE I | 2nd spawning | |||||
3rd spawning | |||||||
(2) | Size measurement including PHASE II Juvenile | ||||||
1 day (1st/2nd/3rd spawning) | |||||||
(3) | PHASE II | 1 st spawning | |||||
2nd spawning | |||||||
3rd spawning | |||||||
(4) | Size measurement | 1 day (1st spawning) | |||||
3. Routine works | |||||||
SEPTEMBER | 10 | 20 | 30 |
1. Intermediate culture | |||||||
(1) | PHASE I | 2nd spawning | |||||
3rd spawning | |||||||
(2) | Size measurement (including PHASE II individuals | ||||||
1 day (2nd/3rd spawning) | |||||||
(3) | PHASE II | 1 st spawning | |||||
2nd spawning | |||||||
3rd spawning | |||||||
(4) | Size measurement | 1 day (1st spawning) | |||||
(5) | PHASE III | 1st spawning | |||||
2. Routine works | |||||||
OCTOBER | 10 | 20 |
1. Intermediate culture | |||||
(1) | Juvenile rearing | PHASE I | 3rd spawning | ||
(2) | Size measurement including PHASE II | 1 day (3rd spawning) | |||
2. Intermediate | |||||
(1) | Juvenile rearing | PHASE II | 2nd spawning | ||
3rd spawning | |||||
(2) | Size measurement including PHASE III | 1 day (2nd/3rd spawning) | |||
3. Intermediate | |||||
PHASE III | |||||
(1) | Juvenile rearing | 1 st spawning | |||
2nd spawning | |||||
(2) | Size measurement | 1 day (1st spawning) |
NOVEMBER | 10 | 20 |
1. Intermediate culture | ||||||
(1) | Juvenile rearing | PHASE I | 3rd spawning | |||
(2) | Size measurement including PHASE II | 1 day (3rd spawning) | ||||
2. Intermediate | ||||||
(1) | Juvenile rearing | PHASE II | 2nd spawning | |||
3rd spawning | ||||||
(2) | Size measurement including PHASE III | 1 day 2nd spawning) | ||||
3. Intermediate | ||||||
PHASE III | ||||||
(1) | Juvenile rearing | 1 st spawning | ||||
2nd spawning | ||||||
(2) | Size measurement | 1 day (1st spawning) |
DECEMBER | 10 | 20 |
1. Intermediate | |||||
(1) | Juvenile rearing | PHASE II | 2nd spawning | ||
(2) | Size measurement including PHASE II | 3rd spawning | |||
1 day (3rd spawning) | |||||
2. Intermediate | |||||
(1) | Juvenile rearing | PHASE II | 1st spawning | ||
2nd spawning | |||||
(2) | Size measurement | 3rd spawning | |||
1 day (1st spawning) |