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Spawning location of Norway pout (Trisopterus esmarkii Nilsson) in the North Sea
Nash, R.D.M.; Wright, P.J.; Matejusova, I.; Dimitrov, S.P.; O'Sullivan, M.; Augley, J.; Höffle, H. (2012). Spawning location of Norway pout (Trisopterus esmarkii Nilsson) in the North Sea. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 69(8): 1338-1346. http://dx.doi.org/10.1093/icesjms/fss130
In: ICES Journal of Marine Science. Academic Press: London. ISSN 1054-3139; e-ISSN 1095-9289
|   |
| Trefwoorden |
Trisopterus esmarkii (Nilsson, 1855) [WoRMS]
Marien/Kust |
| Author keywords |
distribution eggs genetic identification larvae North Sea Norway pout |
| Auteurs | | Top |
- Nash, R.D.M.
- Wright, P.J.
- Matejusova, I.
- Dimitrov, S.P.
|
- O'Sullivan, M.
- Augley, J.
- Höffle, H.
|
|
| Abstract |
The northern region of the North Sea (56–62°N) was sampled in February/March 2009 for eggs and in May 2010 for larvae. To aid in the identification of Norway pout stage I eggs and distinguish them from other ‘cod-like’ eggs, a Taq-Man probe was designed for this species and used here. Stage I Norway pout egg diameters collected from the field were in the range 1.03–1.28 mm and largely overlapped with the size range determined for whiting (Merlangius merlangus). The distribution of Norway pout stage I eggs in 2009 revealed the distribution of spawning in the North Sea and showed that it was similar to the distribution of 2 + Norway pout taken during the International Bottom Trawl Surveys (IBTS) over the same period covering the whole North Sea. The larvae sampled in 2010 were largely in the same area; however, larger larvae occurred to the south-east of the survey area, suggesting advection of young stages from the principal spawning areas in the north-western North Sea to the south-east and toward the Skagerrak. |
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