Diet and feeding ecology of Eriocheir sinensis on the Polish coast of the Baltic Sea and in the Tagus Estuary, Portugal
, , y | 22 sept 2019
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Article Category: Original research paper
Publicado en línea: 22 sept 2019
Páginas: 236 - 246
Recibido: 15 ene 2019
Aceptado: 25 mar 2019
DOI: https://doi.org/10.2478/ohs-2019-0021
© 2019 Faculty of Oceanography and Geography, University of Gdańsk, Poland
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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The number of individuals and carapace width (mean ± SD) of E. sinensis females and males collected from the Gulf of Gdańsk, the Vistula Lagoon and the Tagus Estuary. The same letters indicate no significant differences (Wilcoxon matched pair test; p > 0.05)
| Site | Number of individuals | Carapace width (mm) | |
|---|---|---|---|
| Average | Range | ||
| Gulf of Gdańsk | 49 | 62.00 ±7.80 | 43.00–82.00 |
| Females | 20 | 61.26 ± 7.90a | 46.90–82.00 |
| Males | 29 | 62.29 ± 7.75a | 43.00–78.60 |
| Vistula Lagoon | 200 | 66.77 ± 8.38 | 33.26–89.07 |
| Females | 89 | 67.04 ± 6.38b | 53.70–81.49 |
| Males | 111 | 66.56 ± 9.22b | 33.26–89.07 |
| Tagus Estuary | 38 | 44.35 ± 6.27 | 20.63–56.42 |
| Females | 21 | 43.88 ± 7.29c | 20.63–44.53 |
| Males | 17 | 44.93 ± 4.87c | 37.83–56.42 |
The number of specimens with different food remains in their stomachs collected in the Gulf of Gdańsk, the Vistula Lagoon and the Tagus Estuary. Not all remains were taxonomically identified (ni – not identified)
| Gulf of Gdańsk | Vistula Lagoon | Tagus Estuary | |
|---|---|---|---|
| Plant origin | 6 | 133 | 33 |
| Chlorophyta | 6 | 16 | ni |
| Tracheophyta | 0 | 50 | ni |
| No taxonomic identification | 0 | 67 | 33 |
| Animal origin | 25 | 57 | 13 |
| Crustacea | 4 | 1 | ni |
| Bivalvia | 16 | 29 | ni |
| Amphipoda | 3 | 2 | ni |
| Gastropoda | 2 | 1 | ni |
| Polychaeta | 0 | 5 | ni |
| No taxonomic identification | 0 | 16 | 13 |
| Detritus | 5 | 28 | 0 |