Fig. 1.
Fig. 2.
Fig. 3.
The prevalence and abundance of parasitic infection in two species of red mullet from the Algerian coast_
| Digenean species | Derogenes latus | Lecithocladium excisum | Opecoeloides furcatus | Poracanthium furcatum | Proctotrema bacilliovatum | Proctoeces maculatus |
|---|---|---|---|---|---|---|
| Number of positive samples | 14 | 27 | 155 | 37 | 9 | 8 |
| Prevalence parasites | 2.22% | 4.29% | 24.60% | 5.87% | 1.43% | 1.27% |
| Number of parasites | 19 | 89 | 1189 | 84 | 147 | 15 |
| Abundance parasites | 0.03 | 0.14 | 1.89 | 0.13 | 0.23 | 0.04 |
The prevalence and abundance of parasitic infection in two species of red mullet from the Algerian coast in relation to the size and weight of the fish_
| Digenean species | Derogenes latus | Lecithocladium excisum | Opecoeloides furcatus | Poracanthium furcatum | Proctotrema bacilliovatum | Proctoeces maculatus | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hosts | Mean values | Number of hosts | P (%) | A | P (%) | A | P (%) | A | P (%) | A | P (%) | A | P (%) | A |
| Length (cm) | ≤ 16.5 | 396 | 1.52 | 0.02 | 4.04 | 0.09 | 19.44 | 1.33 | 5.30 | 0.09 | 0.25 | 0.01 | 1.01 | 0.03 |
| > 16.5 | 234 | 3.42 | 0.05 | 4.70 | 0.24 | 33.33 | 2.83 | 6.84 | 0.21 | 3.42 | 0.62 | 1.71 | 0.06 | |
| Weight (g) | ≤ 100 | 600 | 1.67 | 0.02 | 4.00 | 0.09 | 24.33 | 1.69 | 5.83 | 0.13 | 1.00 | 0.16 | 1.17 | 0.04 |
| >100 | 30 | 13.33 | 0.20 | 10.00 | 1.27 | 30.00 | 5.83 | 6.67 | 0.20 | 10.00 | 1.70 | 3.33 | 0.03 | |
Prevalence (P %) and abundance (A) of parasites found in Mullus barbatus and Mullus surmuletus in the three study areas_
| Digenean species | Derogenes latus | Lecithocladium excisum | Opecoeloides furcatus | Poracanthium furcatum | Proctotrema bacilliovatum | Proctoeces maculatus | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hosts | Number of hosts | Areas | P (%) | A | P (%) | A | P (%) | A | P (%) | A | P (%) | A | P (%) | A |
| Mullus barbatus | 507 | Centre | 6.82 | 0.02 | 12.88 | 0.06 | 78.79 | 1.59 | 13.64 | 0.06 | 1.52 | 0.00 | 0.00 | 0.01 |
| East | 0.00 | 0.00 | 0.00 | 0.00 | 80.00 | 3.45 | 20.00 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | ||
| West | 100 | 0.13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||
| Mullus surmuletus | 123 | Centre | 1.96 | 0.01 | 15.69 | 0.52 | 84.31 | 3.34 | 27.45 | 0.38 | 7.84 | 0.23 | 15.69 | 0.92 |
| East | 20.00 | 0.09 | 40.00 | 0.55 | 60.00 | 1.09 | 60.00 | 1.00 | 40.00 | 0.00 | 0.00 | 1.36 | ||
| West | 100 | 1.00 | 0.00 | 0.00 | 50.00 | 0.25 | 50.00 | 1.00 | 50.00 | 0.00 | 0.00 | 7.25 | ||
The seasonal variation in the prevalence (P %) and abundance (A) of Digeneas parasites found in Mullus barbatus and Mullus surmuletus_
| Digenean species | Derogenes latus | Lecithocladium excisum | Opecoeloides furcatus | Poracanthium furcatum | Proctotrema bacilliovatum | Proctoeces maculatus | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hosts | Number of hosts | Seasons | P (%) | A | P (%) | A | P (%) | A | P (%) | A | P (%) | A | P (%) | A |
| Mullus barbatus | 507 | Autumn | 5.66 | 0.02 | 24.53 | 0.11 | 71.70 | 0.98 | 15.09 | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 |
| Winter | 12.50 | 0.06 | 12.50 | 0.08 | 79.17 | 1.16 | 4.17 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | ||
| Spring | 3.03 | 0.01 | 3.03 | 0.01 | 78.79 | 1.57 | 18.18 | 0.06 | 3.03 | 0.00 | 0.00 | 0.02 | ||
| Summer | 10.71 | 0.06 | 0.00 | 0.00 | 89.29 | 3.83 | 14.29 | 0.06 | 3.57 | 0.00 | 0.00 | 0.01 | ||
| Mullus surmuletus | 123 | Autumn | 21.43 | 0.13 | 21.43 | 0.42 | 57.14 | 0.76 | 35.71 | 0.34 | 21.43 | 0.13 | 14.29 | 1.16 |
| Winter | 16.67 | 0.07 | 50.00 | 2.73 | 83.33 | 2.53 | 16.67 | 0.53 | 0.00 | 0.07 | 16.67 | 0.00 | ||
| Spring | 0.00 | 0.00 | 5.56 | 0.05 | 83.33 | 3.49 | 5.56 | 0.26 | 16.67 | 0.03 | 5.56 | 2.51 | ||
| Summer | 0.00 | 0.00 | 15.00 | 0.10 | 95.00 | 5.52 | 55.00 | 0.81 | 5.00 | 0.58 | 20.00 | 0.03 | ||
Prevalence (P %) and abundance (A) of parasites found in Mullus barbatus and Mullus surmuletus in from the Algerian coast_
| Digenean species | Derogenes latus | Lecithocladium excisum | Opecoeloides furcatus | Poracanthium furcatum | Proctotrema bacilliovatum | Proctoeces maculatus | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hosts | Number of hosts | P (%) | A | P (%) | A | P (%) | A | P (%) | A | P (%) | A | P (%) | A |
| Mullus barbatus | 507 | 1.97 | 0.03 | 3.35 | 0.05 | 21.30 | 1.61 | 3.75 | 0.06 | 0.39 | 0.00 | 0.00 | 0.01 |
| Mullus surmuletus | 123 | 3.25 | 0.05 | 8.13 | 0.50 | 38.21 | 3.04 | 14.63 | 0.46 | 5.69 | 0.20 | 6.50 | 1.16 |