TL;DR: It was found that the lower ovaries were invariably heavier than the upper ovaries at all times, and a similar relationship was found in testes prior to and during the spawning season.
Abstract: Measurements have been made of the annual cyclical changes in gonosomatic index (GSI), hepatosomatic index (HSI) and condition factor (K) in male and female dab Limanda limanda (L.). There is a direct correlation between HSI and K, and an inverse correlation of these factors to GSI but with a three month lag. It was also found that the lower (‘ventral’) ovaries were invariably heavier than the upper (‘dorsal’) ovaries at all times, and a similar relationship was found in testes prior to and during the spawning season.
TL;DR: Comparison between hearing data for flatfish and for the cod, Gadus morhua, suggests that differences in performance may be attributed to the accessory role of the swimbladder in the hearing of cod.
TL;DR: Effects of contaminants along a well characterised North Sea contaminant gradient heading northwest of the port of Bremerhaven in the German Bight were determined in dab Limanda lirnanda using i n vitro techniques on isolated hepatocytes demonstrating lysosomal membrane integrity was impaired following contaminant exposure.
Abstract: During the Bremerhaven Workshop, effects of contaminants along a well characterised North Sea contaminant gradient heading northwest of the port of Bremerhaven in the German Bight were determined in dab Limanda lirnanda using i n vitro techniques on isolated hepatocytes. Results demonstrated that lysosomal membrane integrity was impaired following contaminant exposure which resulted in an inability to retain the supravital dye neutral red and in reduced lysosomal uptake of the fluorescent probe acridine orange. There was an improvement in the condition of exposed hepatocytes in samples taken further offshore, and away from the source of the contaminant, however, this trend was reversed in samples taken from the furthermost station on the northeast tail of the Dogger Bank. These findings are related to the histopathological evidence of abnormal lysosomal enlargement and disturbance of liver cell structure.
TL;DR: In this paper, the effects of contaminated sediment on liver cytochrome P4501A (EROD) activity, antioxidant enzymes and oxidative damage (lipid peroxidation) examined.