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| Species A | ||||
|---|---|---|---|---|
|
| ||||
| present | absent | Totals | ||
| present | a | b | a + b | |
| Species B | absent | c | d | c + d |
| Total | a + c | b + d | n = a + b + c + d | |
Where, a = the presence of both species (A and B) in shared containers, b = the presence of species A but species B absent, c = the presence of species B but species A absent, d = samples of other mosquito species but species A and B absent.
