| [the development of the cestode fauna in rainbow trout (oncorhynchus mykiss) in a newly formed surface mine residual water]. | helminthofaunistical studies on rainbow trout, wild fish and zooplankton organisms of a recently emerged rest waters from an open-cast mine have been made continuously in the period from 1980 till 1990. three years after the beginning of the trout production larval triaenophorosis appeared as the first cestodosis. in the subsequent time changes of the cestode fauna of rainbow trout kept in net-cages could already be observed within a few years. possible causes for the replacement of eubothrium c ... | 1993 | 8508218 |
| new trends in parasitic infections of cultured freshwater fish. | the 1980s are characterized by the appearance of new fish parasitoses, the clarification of the aetiology of diseases and new insights into the process of infection and the development of important parasites, especially myxosporidians. two phaerosporoses have entered into the foreground: swimbladder inflammation (sbi) caused by sphaerospora renicola in common carp and proliferative kidney disease (pkd) in salmonids. both diseases must be reported in the german democratic republic (gdr). the conn ... | 1989 | 2669320 |
| [life cycle of proteocephalus neglectus (cestoda) from rainbow trout salmo gairdneri]. | proteocephalus neglectus is described for the first time in the g.d.r. from salmo gairdneri. the incidence of invasion was 65% and the main intensity was 2.8 with a maximum of 6 worms per fish. p. neglectus has a 2-host life-cycle. copepods of the cyclops strenuus-group and cyclops furcifer were used as experimental intermediate hosts. the ontogenetic stages oncosphaera (free-living first larva), cercoscolex (second larva in the copepod haemocoel) and preadult (in the gut lumen of the definitive ... | 1980 | 7447062 |
| studies on the development of the cestode proteocephalus neglectus la rue, 1911 (cestoda: proteocephalidae) under experimental conditions. | a part of the life cycle of proteocephalus neglectus la rue, 1911, a parasite of trout, starting from release of eggs from mature parasites into water, to the early phase of development in the definitive host, was studied under experimental conditions. special regard has been paid to development in the intermediate host, copepod cyclops strenuus. some oncospheres in eggs kept in water at 5 and 10 degrees c remained infective for 20-25 days. the percentage of infected copepods depended on the len ... | 1991 | 1916530 |