Non-indigenous tanaid Sinelobus vanhaareni Bamber, 2014 in the Polish coastal waters – an example of a successful invader
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14. März 2019
Über diesen Artikel
Artikel-Kategorie: Short communication
Online veröffentlicht: 14. März 2019
Seitenbereich: 76 - 84
Eingereicht: 07. Aug. 2018
Akzeptiert: 10. Sept. 2018
DOI: https://doi.org/10.1515/ohs-2019-0008
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© 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.
Figure 1
Figure 2
Abundance of Sinelobus vanhaareni, information on the main associated taxa and key environmental parameters at the study sites in Polish coastal waters_ Numbers in brackets before sites’ names in the first column refer to those given in Fig_ 1 (T – temperature, S – salinity)_
| Site | Sampling date | Abundance (max) | T (°C) | S (PSU) | Depth (m) | Substrate/sampling method | Main associated taxa |
|---|---|---|---|---|---|---|---|
| (1) Port of Gdynia | July 2014 (first record) | 3530 ind. m−2 | 22.0 | 6.9 | 1–3 | Horizontal artificial hard bottom (settlement plates) | |
| Sept. 2014 | 47 400 ind. m−2 | 19.0 | 7.0 | 1–7 | Horizontal artificial hard bottom (settlement plates) | ||
| Oct. 2014 | 37 000 ind. m−2 | 16.3 | 7.1 | 1–7 | Horizontal artificial hard bottom (settlement plates) | ||
| Oct. 2014 | 100 per trap | 16.1 | 7.1 | 9 | Artificial habitat collector | ||
| July 2015 | 500 per trap | No data | 6.9 | 9 | Artificial habitat collector | ||
| Jan. 2016 | 100 ind. m−2 | 1.7 | 7.3 | 14 | (Soft sediment Van Veen grab) | Oligochaeta |
|
| June 2016 | 1 per trap | 19.2 | 6.9 | 9 | Artificial habitat collector | Oligochaeta |
|
| Aug. 2016 | 10 ind. m−2 | 21.1 | 7.1 | 14 | Soft sediment (Van Veen grab) | Oligochaeta |
|
| (2) Gdynia Babie Doły | July 2015 | 3825 ind. m−2 | 18.6 | 6.4 | 2–8 | Vertical concrete walls of a man-made offshore structure (Kautsky sampler) | |
| July 2015 | 358 ind. m−2 | 18.6 | 6.4 | 8 | Natural boulders up to 1 m diameter (Kautsky sampler) | ||
| (3) Jastarnia | March 2016 | 1133 ind. m−2 | 4.0 | 6.7 | 2–4 | Vertical concrete walls of a man-made offshore structure (Kautsky sampler) | |
| (4) Naval Base in Hel | April 2016 | No data | 4.2 | 6.5 | 2–5 | Vertical concrete walls of a breakwater (Kautsky sampler) | |
| (5) Gdańsk National Sailing Centre | May 2016 | No data | 19 | 4.9 | 2–4 | Verfical man-made concrete piles(Kautsky sampler) | |
| (6) Gdynia Orłowo | June 2016 | 1791 ind. m−2 | 6.1 | 6.5 | 5 | Natural boulders up to 1 m diameter (Kautsky sampler) | |
| (7) Port of Hel | Sept. 2017 | 60 per trap | 18.1 | 7.2 | 2 | Artificial habitat collectors | Hydrobiidae |
| (8) ORP “Bryza” Shipwreck | Jan. 2016 | Not present | 4.0 | 7.2 | 12 | Steel plating of a shipwreck (Kautsky sampler) | |
| April 2018 | Not present | 3.9 | 7.2 | 12–16 | Steel plating of a shipwreck (Kautsky sampler) | ||
| (9) Słupsk Bank | Jan. 2018 | Not present | 3.6 | 7.3 | 14 | Natural boulders up to 2 m diameter (Kautsky sampler) | |
| March 2018 | Not present | 4.0 | 7.3 | 14 | Natural boulders up to 2 m diameter (Kautsky sampler) |
Comparison of the main taxonomic features used to distinguish S_ vanhaareni from H_ oerstedii (Haaren & Soors 2009; Bamber 2014; personal observations)
| Feature | ||
|---|---|---|
| Max body length | 3.0 mm | 2.0 mm |
| External pigmentati on | Dark mottling on dorsal surface of the entire body | Creamy white body with no mottling |
| Thorax | Pereonites rounded or trapezoidal in shape, which creates notched lateral edges of the animal | Pereonites more rectangular in shape, which makes the notching less visible |
| Pleon | 4 pleonites and pleotelson | 5 pleonites and pleotelson |
| Each of pleonites 1–3 twice as long as pleonite 4 | Pleonites 1–5 subequal in length | |
| Pleonite 1 narrowed anteriorly, which makes the entire pleon well pronounced | Pleonite 1 rectangular in shape, which makes the entire pleon less distinct | |
| 3 pairs of ventral pleopods on pleonites 1–3 | 5 pairs of ventral pleopods on pleonites 1–5 | |
| Two rows of plumose setae on dorsal side of pleonites 1–3 | No plumose setae on dorsal side of pleon |