Figure 1
Figure 2
Figure 3
The number of fish examined (n) with mean standard (SL, mm) and total (TL, mm) length (means and standard deviation)
| Süderelbe | Geesthacht | Ústi nad Labem | |
|---|---|---|---|
| n | 23 | 20 | 53 |
| SL | 70.8 ± 9.4 | 101.0 ± 8.3 | 69.7 ± 6.5 |
| TL | 84.2 ± 10.3 | 118.1 ± 9.1 | 82.5 ± 7.6 |
Parasite community of round goby (Neogobius melanostomus) from the Elbe River, showing prevalence (P, %), mean intensity (MI±SD), intensity range (min_–max) and mean abundance (A)
| Parasite species | Site | Süderelbe | Geesthacht | Ústi nad Labem* | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| P | MI ± SD (min.–max) | A | P | MI ± SD (min.–max) | A | P | MI ± SD (min.–max) | A | ||
| Microsporidia | ||||||||||
| Microsporidium sp. | mesentery | 13.0 | 4.3 ± 1.5 | 0.6 | 20.0 | 3.5 ± 2.1 | 0.7 | |||
| Oligohymenophorea | ||||||||||
| Trichodina spp. | gills | 4.3 | 10.0 | 0.4 | 10.0 | 50.5 ± 70.0 | 5.1 | 1.9 | 1.0 | 0.02 |
| Ichthyophthirius multi filiis Fouquet, 1876 | gills | 4.3 | 1.0 | 0.04 | 1.9 | 1.0 | 0.02 | |||
| Myxozoa | ||||||||||
| Myxosporea cl. spp. | gills | 4.3 | 1.0 | 0.04 | ||||||
| Digenea | ||||||||||
| Diplostomum spp. metacercariae | eye | 5.0 | 1.0 | 0.1 | 11.3 | 1.7 ± 1.0 | 0.2 | |||
| Acanthocephala | ||||||||||
| Acanthocephalus lucii (Müller, 1776) | intesti ne | 5.0 | 1.0 | 0.1 | ||||||
| Acanthocephalus rhinensis Amin et al., 2008 | intesti ne | 5.0 | 1.0 | 0.1 | ||||||
| Pomphorhynchus laevis (Zoega, 1776) cystacanths | mesentery | 20.0 | 1.0 ± 0.0 | 0.2 | 96.2 | 21.5 ± 21.6 (1–82) | 20.7 | |||
| Nematoda | ||||||||||
| Anguillicola crassus (Kuwahara et al., 1974) larvae | mesentery gut walls | 56.5 | 3.6 ± 2.9 (1–10) | 2.0 | 3.8 | 1.0 ± 0.0 (1) | 0.04 | |||
| Raphidascaris acus (Bloch, 1779) larvae | mesentery liver | 43.5 | 1.5 ± 0.5 (1–2) | 0.7 | 15.0 | 1.3 ± 0.6 (1–2) | 0.2 | |||
| Contracaecum rudolphii Hartwich, 1964 larvae | mesentery | 1.9 | 1.0 | 0.02 | ||||||
| Arachnida | ||||||||||
| Hydrachna sp. nymph | gills | 5.0 | 1.0 | 0.1 | ||||||
| Bivalvia | ||||||||||
| Anodonta sp. glochidia | 23.3 | 1.4 ± 0.8 (1–3) | 0.3 | |||||||
| Unio sp. glochidia | gills | 30.0 | 3.0 ± 0.9 (2–4) | 0.9 | ||||||