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Effects of a changing abiotic environment on the energy metabolism in the estuarine mysid shrimp Neomysis integer (Crustacea: Mysidacea) Verslycke, T.; Janssen, C.R. (2002). Effects of a changing abiotic environment on the energy metabolism in the estuarine mysid shrimp Neomysis integer (Crustacea: Mysidacea). J. Exp. Mar. Biol. Ecol. 279(1-2): 61-72. dx.doi.org/10.1016/S0022-0981(02)00339-8 In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 100603 [ download pdf ]

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Trefwoorden

Aquatic organisms > Estuarine organisms Bioenergetics Biological stress Biology > Physiology > Ecophysiology Chemical elements > Nonmetals > Atmospheric gases > Oxygen > Dissolved gases > Dissolved oxygen Energy budget Environmental effects > Salinity effects Environmental effects > Temperature effects Environmental factors > Abiotic factors Fauna > Aquatic organisms > Aquatic animals > Shellfish > Marine organisms > Marine crustaceans Metabolism > Animal metabolism Osmoregulation Respiration Neomysis integer (Leach, 1814) [WoRMS]; Neomysis integer (Leach, 1814) [WoRMS] Belgium, Zeeschelde, Galgenweel [Marine Regions] Marien/Kust; Brak water

Author keywords

abiotic stress; biomarker; cellular energy allocation; energy metabolism; Neomysis integer

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Project	Top | Auteurs
Endocrine disruption in the Scheldt Estuary: distribution, exposure and effects

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Auteurs		Top
Verslycke, T. Janssen, C.R.

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Abstract

Adaptations to life in an estuary include a wide salinity tolerance, an extremely efficient osmoregulatory and respiratory physiology. These adaptive mechanisms are energy-consuming and relatively little data is available on the combined effects of abiotic stress factors on the energy metabolism of mysid shrimp. A new methodology (cellular energy allocation, CEA) to assess the energy budget was adopted for the estuarine crustacean Neomysis integer (Crustacea: Mysidacea). The biochemical composition of N. integer was determined: protein (7.39±1.81% wet weight), lipid (3.99±1.05% ww) and sugar (0.42±0.18% ww). To assess the effect of natural variability on the energy metabolic processes in N. integer, a fractional factorial test design was set up with different naturally (Westerscheldt estuary, The Netherlands) occurring combinations of temperature, salinity and dissolved oxygen. The different abiotic factors had no significant effect on the energy metabolism of N. integer within the tested range. Temperature explained the decrease in lipid, protein and total energy reserves. Temperature, in general, had the most adverse effect on the CEA. Salinity was the most important factor explaining the effects on sugar reserves, with higher salinities causing an increased sugar demand. By modeling the influence of these abiotic stresses on the energy metabolism (CEA) of N. integer, it will be possible to use the CEA as an ecologically relevant biomarker of exposure to pollutants in estuaries.

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