![Occurrence of Nematodes in the alimentary tract of great cormorants [Phalacrocorax carbo (Linnaeus, 1758)] in colonies located in the upper and lower Vistula River Cover](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6472637f215d2f6c89dc680b/cover-image.jpg)
Nematodes in great cormorants (Phalacrocorax carbo) from colonies in the area of the lower (Murzynowo) and upper (Tyniec) Vistula River_ P – prevalence, MI – mean intensity, RI – range of intensity, F – female, M – male, L – third- and fourth-stage larvae, SD – standard deviation
| Nematoda | Nestlings from Murzynowo | Adults from Tyniec | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| P | MI ± SD | Contribution (%) | P | MI ± SD | Contribution (%) | |||||
| F | M | L | F | M | L | |||||
| Contracaecum rudolphii | 100 | 12.5 ± 5.9 | 37.7 | 22.1 | 40.2 | 100 | 154.6 ± 111.4 | 35.0 | 16.9 | 48.1 |
| Anisakis simplex | 20 | 0.7 ± 1.3 | 0.0 | 0.0 | 100 | 0.0 | 0.0 | 0.0 | 0.0 | 0,0 |
| Hysterothylacium aduncum | 30 | 0.9 ± 1.5 | 0.0 | 0.0 | 100 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Cosmocephalus obvelatus | 30 | 1.2 ± 2.1 | 0.0 | 0.0 | 100 | 30 | 1.3 ± 2.5 | 0.0 | 0.0 | 100 |
| Syncuaria squamata | 65 | 2.3 ± 2.0 | 80.4 | 19.6 | 0.0 | 65 | 6.2 ± 7.6 | 78.4 | 21.6 | 0.0 |
| Eustrongylides excisus | 75 | 4.2 ± 3.9 | 59.5 | 40.5 | 0.0 | 80 | 7.0 ± 6.3 | 85.7 | 14.3 | 0.0 |
| Baruscapillaria carbonis | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 60 | 5.3 ± 8.6 | 79.4 | 20.6 | 0.0 |
| Desmidocercella numidica | 45 | 1.7 ± 2.3 | 0.0 | 0.0 | 100 | 25 | 1.2 ± 2.4 | 0.0 | 0.0 | 100 |