Vergleich von Ausbeutefaktoren und Eislagerqualität zwischen Kliesche (Limanda limanda) und Scholle (Pleuronectes platessa) aus der Nordsee

North Sea plaice (Pleuronectes platessa) and dab (Limanda limanda) were experimentally stored in ice for 6 days during the 181th cruise of the FRV “Wather Herwig III”. It could be demonstrated that both flat fish species showed the same storage properties and were of a comparable quality until the end of the storage experiment. The quality of both species was determined by sensory assessment of the quality grade, by measuring of the impedance using the German Fischtester VI and the Icelandic RT- tester and pH- and TVB- N- measurements. The average length of North Sea dab is generally small (female: 18,5 ± 3,9 cm; male: 17 ± 2,9 cm), therefore it seemed to be more efficient to process fish portions (eviscerated, head, tail, fins and part of belly flaps removed). The yield by manually processed filets or fish portions from dab is about 30 or 62 %, respectively

A study on the lipid distribution pattern in muscles of two teleosts, Arius dussumieri and Ophiocephalus striatus

The muscles of the various regions and zones of the body of the two teleosts, A. dussumieri and O. striatus have been analyzed for lipid contents. There is a significant dorsum-ventral gradient in lipid concentration exhibited by both the fishes with higher lipid values in the ventral aspect of the body, especially the belly flaps. As regards the vertical series, both the fishes exhibit comparatively higher lipid contents at the dorsal aspects of the caudal region and at anterior portion of the dorsal fin area with lower lipid values at cephalic and middle portions of the body. The red muscle of Arius exhibits higher lipid content than the white muscle.