Table 2.
Details of the farms that were surveyed in this study
| Parameter | Shrimp main crop | Shrimp farm typed | |
|---|---|---|---|
| Extensive | Semi-intensive | ||
| Number of farms | All | 30 | 21 |
| P. monodon | 31 | 9 | |
| M. rosenbergii | 11 | 0 | |
|
Number of large farms (≥ 6 ha) |
All | 6 | 2 |
| P. monodon | 5 | 2 | |
| M. rosenbergii | 1 | 0 | |
|
Number of medium farms (> 1 ha and < 6 ha) |
All | 15 | 6 |
| P. monodon | 14 | 6 | |
| M. rosenbergii | 1 | 0 | |
|
Number of small farms (≤ 1 ha) |
All | 21 | 1 |
| P. monodon | 12 | 1 | |
| M. rosenbergii | 9 | 0 | |
| Farms co-culturing finfish with main cropa | All | 41 | 0 |
| P. monodon | 31 | 0 | |
| M. rosenbergii | 10 | 0 | |
| Farms co-culturing shrimp and finfish with main cropb | All | 24 | 0 |
| P. monodon | 22 | 0 | |
| M. rosenbergii | 2 | 0 | |
| Farms performing no co-culture | All | 1 | 9 |
| P. monodon | 9 | 0 | |
| M. rosenbergii | 1 | 0 | |
| Median farm size ± MADc (hectares) | All | 1.0 ± 1.0 | 2.4 ± 1.2 |
| P. monodon | 1.2 ± 0.88 | 2.4 ± 1.2 | |
| M. rosenbergii | 0.25 ± 0.18 | – | |
| Mean total number of employees ± Std Dev (pre-COVID-19) | All | 3.8 ± 4.7 | 9.9 ± 9.1 |
| P. monodon | 4.6 ± 4.8 | 9.9 ± 9.1 | |
| M. rosenbergii | 1.5 ± 3.9 | – | |
aCo-culture of shrimp indicates that the farm cultivated two or more species of shrimp (farmer indicated the main crop species)
bFinfish co-culture included saltwater and freshwater species (for full list see Table 5)
cMedian absolute deviation
dValues shown are the number of farms