The brown shrimp (Crangon crangon) is widely distributed in the coastal areas of the eastern Atlantic, but was only recently found in Icelandic waters. In this study, annual and seasonal changes in population abundance of brown shrimp southwest of Iceland were recorded from 2005 to 2014 in order to see whether the species has established itself in Icelandic waters. In general, the population grew in the beginning of the study period and seems to have somewhat stabilized in the past few years. The average density of shrimps each month rarely exceeded 200 individuals per 100 m2. The number of juveniles increased in July/August and again in February, indicating bi-annual spawning. The relative abundance of adults was significantly affected by both the number of juveniles of the previous summer and the sea surface temperature. Brown shrimp seem to have rapidly adapted to Icelandic waters and have become established and are highly successful in the newly colonized area.
AlexanderM. E.DickJ. T. A.WeylO. L. F.RobinsonT. B.RichardsonD. M.2014.
Existing and emerging high impact invasive species are charachterized by higher functional responses than natives.
Biol. Lett.10: 20130946.
AnsellA. D.ComelyC. A.RobbL.1999.
Distribution, movements and diet of macrocrustaceans on a Scottish sandy beach with particular reference to predation on juvenile fishes.
Mar. Ecol. Prog. Ser.176:
DickJ. T. A.GallagherK.AvlijasS.ClarkeH. C.LewisS. E.LeungS.MinchinD. J. C.AlexanderM. E.MaguireC.HarrodC.ReidN.HaddawayN. R.FarnsworthK. D.PenkM.RicciardiA.2013.
Ecological impacts of an invasive predator explained and predicted by comparative functional responses.
HendersonP. A.HolmesR. H. A.1987.
On the population biology of the common shrimp Crangon crangon (L.) (Crustacea: Caridea) in the Severn Estuary and Bristol Channel.
J. Mar. Biol. Ass. U.K.67:
Expansion of the brown shrimp Crangon crangon L. onto juvenile plaice Pleuronectes platessa L. nursery habitat in the Westfjords of Iceland. (University of Akureyri, University Centre of the WestfjordsBÍsafjörður).
Sex-ratio, seasonality and long-term variation in maturation and spawning of the brown shrimp Crangon crangon (L.) in the German Bight (North Sea).
Helgol. Mar. Res.62:
Long-term variation in the abundance of the brown shrimp Crangon crangon (L.) population of the German Bight and possible causes for its interannual variability.