Table 3. Comparative cestode infection in juvenile A. franciscana from single and syntopic populations.
Parasite infections from a population without co-occurrence of congeners (pond 4, AF-single) and one in co-existence with A. salina (pond CX, AF-mixed) from January to March 2009. Proportion of juvenile Artemia that were A. franciscana is shown in parentheses. Fisher Exact tests were used to compare infection rates between ponds in a given month. Significantly higher values are shown in bold.
| January 2009 | February 2009 | March 2009 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cestode species | AF-single N = 168 | AF-syntopic (65.7%) N = 134 | p value | AF-single N = 67 | AF-syntopic (50.4%) N = 179 | p value | AF-single N = 248 | AF-syntopic (59.4%) N = 111 | p value | |
| FL | P% | 1.2 | 0.0 | 0.505 | 0.0 | 5.0 | 0.119 | 0.0 | 0.9 | 0.309 |
| MI | 1.00 ± 0.00 | 0.00 | – | 0.00 | 1.00 ± 0.00 | – | 0.00 | 1.00 | – | |
| MA | 0.0119 ± 0.01 | 0.00 | 0.206 | 0.00 | 0.0503 ± 0.02 | 0.062 | 0.00 | 0.0090 ± 0.01 | 0.135 | |
| FF | P% | 1.8 | 0.0 | 0.257 | 1.5 | 1.7 | 1.000 | 0.0 | 1.8 | 0.095 |
| MI | 1.33 ± 0.33 | 0.00 | – | 1.00 | 1.00 ± 0.00 | 1.000 | 0.00 | 1.00 ± 0.00 | – | |
| MA | 0.0238 ± 0.01 | 0.00 | 0.121 | 0.0149 ± 0.01 | 0.0168 ± 0.01 | 0.919 | 0.00 | 0.0181 ± 0.01* | 0.034 | |
| EA | P% | 1.8 | 0.0 | 0.257 | 0.0 | 0.0 | – | 0 | 0.9 | 0.309 |
| MI | 1.00 ± 0.00 | 0.00 | – | 0.00 | 0.00 | – | 0.00 | 1.00 | – | |
| MA | 0.0179 ± 0.01 | 0.00 | 0.121 | 0.00 | 0.00 | 1.000 | 0.00 | 0.0090 ± 0.01 | 0.135 | |
| GS | P% | 0.6 | 0.0 | 1.000 | 0.0 | 0.0 | – | 0.0 | 0.0 | – |
| MI | 1.00 | 0.00 | – | 0.00 | 0.00 | – | 0.00 | 0.00 | – | |
| MA | 0.0060 ± 0.01 | 0.00 | 0.372 | 0.00 | 0.00 | 1.00 | 000 | 0.00 | 1.000 | |
| GSP | P% | 0.6 | 0.0 | 1.000 | 0.0 | 0.6 | 1.00 | 0.0 | 0.0 | – |
| MI | 1.00 | 0.00 | – | 0.00 | 1.00 | – | 0.00 | 0.00 | – | |
| MA | 0.0060 ± 0.01 | 0.00 | 0.372 | 0.00 | 0.0056 ± 0.01 | 0.541 | 0.00 | 0.00 | 1.000 | |
| Total infection | ||||||||||
| P% | 6.0 * | 0.0 | 0.003 | 1.5 | 5.6 | 0.298 | 0.0 | 2.7 * | 0.029 | |
| MI | 1.10 ± 0.10 | 0.00 | – | 1.00 | 1.30 ± 0.15 | 0.727 | 0.00 | 1.33 ± 0.33 | – | |
| MA | 0.0655 ± 0.02* | 0.00 | 0.004 | 0.0149 ± 0.01 | 0.0726 ± 0.02 | 0.165 | 0.00 | 0.0360 ± 0.02* | 0.009 | |
| Species richness | 0.06 ± 0.02* | 0.00 | 0.004 | 0.01 ± 0.01 | 0.07 ± 0.02 | 0.165 | 0.00 | 0.04 ± 0.02* | 0.009 | |
| SR infected | 1.00 ± 0.00 | – | 1.00 | 1.30 ± 0.15 | 1.33 ± 0.36 | – | ||||
Notes.
- N
- total number of specimens examined
Other abbreviations are explained in Table 1.
*
p < 0.05.
–
Test not possible owing to lack of data.