scholarly journals Selectivity experiments with sorting grids in the North Sea brown shrimp (Crangon crangon) fishery

2002 ◽  
Vol 54 (2) ◽  
pp. 217-233 ◽  
Author(s):  
H Polet
Keyword(s):  
North Sea ◽  
Brown Shrimp ◽  
Crangon Crangon ◽  
The North ◽  
The North Sea

scholarly journals Predictive framework for codend size selection of brown shrimp (Crangon crangon) in the North Sea beam-trawl fishery

PLoS ONE ◽  
2018 ◽  
Vol 13 (7) ◽  
pp. e0200464 ◽  
Author(s):  
Juan Santos ◽  
Bent Herrmann ◽  
Daniel Stepputtis ◽  
Claudia Günther ◽  
Bente Limmer ◽  
...  
Keyword(s):  
North Sea ◽  
Brown Shrimp ◽  
Beam Trawl ◽  
Crangon Crangon ◽  
Size Selection ◽  
Trawl Fishery ◽  
The North ◽  
Sea Beam ◽  
The North Sea ◽  
Selection Of

scholarly journals Tail Myonecrosis IN Brown Shrimp (Crangon crangon L.) Caught in the North Sea

2016 ◽  
Vol 154 (1) ◽  
pp. 93
Author(s):  
X. Vermeersch ◽  
A. Decostere ◽  
G. Vlaemynck ◽  
K. Chiers
Keyword(s):  
North Sea ◽  
Brown Shrimp ◽  
Crangon Crangon ◽  
The North ◽  
The North Sea

scholarly journals First report of an idiopathic partial tail myonecrosis in European brown shrimp Crangon crangon caught in the North Sea

2020 ◽  
Vol 138 ◽  
pp. 35-40
Author(s):  
XHC Vermeersch ◽  
A Decostere ◽  
G Vlaemynck ◽  
K Chiers
Keyword(s):  
North Sea ◽  
Distal Part ◽  
Brown Shrimp ◽  
Bacterial Invasion ◽  
Microscopical Examination ◽  
Necrotic Tissue ◽  
Crangon Crangon ◽  
Important Species ◽  
The North ◽  
The North Sea

The European brown shrimp Crangon crangon is an abundant and commercially important species in the North Sea. Currently, there is interest in landing live shrimp to provide fresh animals for a growing market in live brown shrimp. During 4 survival studies between 2014 and 2016, shrimp were collected from commercial trawlers and maintained alive in off-shore facilities. From Day 1 onwards, a minority of shrimp (~2.24%) developed a white discoloration of the abdominal muscles and a depigmentation of the distal part of the abdomen, along with paralysis of the affected tissues and appendages. As the symptoms progressed, a circumferential blackish delineation appeared, creating a distinct boundary between healthy and necrotic tissue. Affected shrimp survived up to 3 wk, although in several animals the distal part of the tail was completely lost. Histological and electron microscopical examination confirmed the myonecrosis. A secondary bacterial invasion of the necrotic muscle was observed in some animals. RT-PCR for infectious myonecrosis virus was negative. The condition appears not to be contagious, based on the feeding of healthy shrimp with necrotic tissue of affected shrimp. Based on these observations, a mechanical cause inflicted during the catching process is proposed.

scholarly journals Hydrostatic pressure affects selective tidal stream transport in the North Sea brown shrimp (Crangon crangon)

2015 ◽  
Vol 218 (20) ◽  
pp. 3241-3248 ◽  
Author(s):  
M. Tielmann ◽  
S. Reiser ◽  
M. Hufnagl ◽  
J.-P. Herrmann ◽  
A. Eckardt ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
North Sea ◽  
Brown Shrimp ◽  
Crangon Crangon ◽  
The North ◽  
The North Sea ◽  
Tidal Stream ◽  
Selective Tidal Stream Transport ◽  
Stream Transport

scholarly journals Shell disease does not affect biochemical profiles of the North Sea brown shrimp Crangon crangon

2020 ◽  
Vol 141 ◽  
pp. 117-126
Author(s):  
A Segelken-Voigt ◽  
W Hagen ◽  
G Gerlach ◽  
J Strahl
Keyword(s):  
Nutritional Value ◽  
Essential Fatty Acids ◽  
Brown Shrimp ◽  
Hepatosomatic Index ◽  
Crangon Crangon ◽  
The North ◽  
The North Sea ◽  
Shell Disease ◽  
Biochemical Profiles ◽  
Atlantic Coastal

The brown shrimp Crangon crangon is a key component of the North Atlantic coastal food web and an important target species for the fishery economy. As the brown shrimp contains large amounts of protein and essential fatty acids, its consumption makes it a beneficial choice for humans. Commercially harvested crustaceans like C. crangon are frequently affected by bacterial shell disease, with necrotizing erosions and ulcerations of the cuticle. To determine whether shell disease influences the nutritional value of C. crangon, total protein and lipid contents, as well as fatty acid compositions of muscle tissue and hepatopancreas, together with the hepatosomatic index, were examined in healthy and affected individuals. The biochemical composition of the tissues did not differ significantly between the 2 groups. Also, the hepatosomatic index, as an indicator of energy reserves in shrimps, was similar between healthy and affected animals. Our results indicate that the nutritional value of C. crangon is not affected by shell disease, as long as it remains superficial as in the present study.

Short-term effect of pulsed direct current on various species of adult fish and its implication in pulse trawling for brown shrimp in the North Sea

2016 ◽  
Vol 179 ◽  
pp. 90-97 ◽  
Author(s):  
Marieke Desender ◽  
Koen Chiers ◽  
Hans Polet ◽  
Bart Verschueren ◽  
Jimmy H. Saunders ◽  
...  
Keyword(s):  
North Sea ◽  
Direct Current ◽  
Term Effect ◽  
Brown Shrimp ◽  
Adult Fish ◽  
Short Term ◽  
Short Term Effect ◽  
The North ◽  
The North Sea ◽  
Pulsed Direct Current

scholarly journals Decreasing predation levels and increasing landings challenge the paradigm of non-management of North Sea brown shrimp (Crangon crangon)

2014 ◽  
Vol 72 (3) ◽  
pp. 804-823 ◽  
Author(s):  
Axel Temming ◽  
Marc Hufnagl
Keyword(s):  
North Sea ◽  
Stock Assessment ◽  
Total Mortality ◽  
Brown Shrimp ◽  
Distribution Area ◽  
Distribution Data ◽  
Mammal Species ◽  
Potential Growth ◽  
The North ◽  
The North Sea

Abstract The North Sea brown shrimp fishery is currently regulated neither with quotas nor with effort management. The current paradigm of non-management was based on an analysis of the total predation by cod and whiting in relation to commercial catches for the period 1970–1995 and the estimated total dominance of natural mortality. However, since this period, the North Sea ecosystem has undergone pronounced changes with overfishing and climate change causing a substantial decline in predator stocks, namely cod and whiting. In addition, both predators have shifted their range of distribution causing a reduced overlap with brown shrimp. Here, we extend the previous assessment of brown shrimp predation for the years 1996–2011 using updated stock assessment and predator distribution data. For the first time, predation estimates are used together with commercial landings to partition independent estimates of total mortality into fishing and predation mortality. We demonstrate that the decline of key predators of brown shrimp in combination with a shift in the distributional range of the predators has caused a new situation, in which the fishery has become the main mortality source of adult brown shrimp (>50 mm). Average landings since 2000 have been ∼40% higher than in the 1980s and 1990s, indicating that humans have at least partly taken over the share previously taken by juvenile whiting and cod. We discuss that this situation is likely to continue, because three marine mammal species have built up a combined population of over 80 000 individuals, which hunt for potential brown shrimp predators mainly in the distribution area of brown shrimp. The application of two yield-per-recruit models of different complexity indicates potential growth overfishing of brown shrimp and reopens the discussion of management.

Small steps high leaps: Bio-economical effects of changing codend mesh size in the North Sea Brown shrimp fishery

2021 ◽  
Vol 234 ◽  
pp. 105797
Author(s):  
Claudia Günther ◽  
Axel Temming ◽  
Juan Santos ◽  
Jörg Berkenhagen ◽  
Daniel Stepputtis ◽  
...  
Keyword(s):  
North Sea ◽  
Mesh Size ◽  
Brown Shrimp ◽  
Shrimp Fishery ◽  
The North ◽  
The North Sea
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