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Diseases of Aquatic Organisms

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DAO 141:117-126 (2020)  -  DOI:

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

Alexandra Segelken-Voigt1,6,*, Wilhelm Hagen2, Gabriele Gerlach1,3,4, Julia Strahl1,3,5

1Institute of Biology and Environmental Sciences, Carl von Ossietzky University Oldenburg, Carl von Ossietzky Str. 9-11, 26111 Oldenburg, Germany
2BreMarE - Bremen Marine Ecology, Marine Zoology, University of Bremen, PO Box 330440, 28334 Bremen, Germany
3Helmholtz-Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), Ammerländer Heerstrasse 231, 26129 Oldenburg, Germany
4Centre of Excellence for Coral Reef Studies and School of Marine and Tropical Biology, James Cook University, 4811 Queensland, Australia
5Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
6Present address: Institute of Fisheries, State Research Center of Agriculture and Fisheries Mecklenburg-Vorpommern, 18375 Born, Germany

ABSTRACT: 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.

KEY WORDS: Black spot disease · Lipids · Fatty acids · Omega-3 · EPA · DHA · Hepatosomatic index

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Cite this article as: Segelken-Voigt A, Hagen W, Gerlach G, Strahl J (2020) Shell disease does not affect biochemical profiles of the North Sea brown shrimp Crangon crangon. Dis Aquat Org 141:117-126.

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