Ragnar K. Kinzelbach

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We investigated the effects of the anti-malarials mefloquine and primaquine against the juvenile and adult life stages of Schistosoma mansoniin vitro. Cercariae were incubated with 0.5 μg/ml, 1 μg/ml and 2 μg/ml mefloquine or primaquine and with 1 μg/ml praziquantel for 12h. Schistosomula, pre-adults and adults were incubated with 0.5 μg/ml, 1 μg/ml and 2(More)
The loss of biodiversity — the tendency of the world's fauna to become more and more homogeneous —is widely acknowledged as a problem. Biodiversity is threatened by neozoism and acculturation as much as the extinction of species, but these dangers are less well known. Neozoism and acculturation have an effect on two levels; they lead 1) to an equalisation(More)
Fig. 1. Synthesenschema Es gMt nun zu prt~fen, ob an der Schle imhaut yon Darm und Harnblase, deren E n z y m m u s t e r z.T. f lbereinst immen, gleiche Ei lzymdefekte durch alkylierende Agent ien ausl6sbar sind. Bet Verabre ichung yon 20 mg/die /kg Dibu ty ln i t rosamin mi t dem Trinkwasser an weibliche W i s t a r R a t t e n [5, 6] haben wit das erste(More)
Since 1850, the CO (2) content of the atmosphere has increased from 280 to 360 ppm, and the average surface temperature has risen from 14.6 to 15.3 C . A further increase between 1.8 and 4.0 C is expected for the 21st century. Temperate and cold climate zones are affected predominantly, but tropical regions are not spared. At the same time, the world wide(More)
This study was carried out along the Libyan coast from February 2005 to March 2006. A total of 1,511 fishing boats of four types were observed: 64.26% were “flouka”, 24.09% “mator”, 6.88% “lampara” and 4.77% “batah”. Most of them were concentrated in the western region (58.64%). The most common fishing gear used in the coastal area is the trammel net, which(More)
SUMMARY OBJECTIVE Bilharziosis is one of the most important helminthal infections in humans and is caused by blood flukes of the genus Schistosoma. Three different life stages of the parasite occur within the mammalian host: schistosomula located in the skin, pre-adults located in the lung and adult worms located in the portal venous system. Erythrocytes(More)
Research on textual and pictorial sources from the period 1200–1700, especially in Central Europe, has revealed the existence of considerably more and earlier examples of bird collections than previously suspected, as well as of a variety of motivations and manual skills required for the preserving of birds prior to 1600. Many 16th century natural history(More)
The discovery of a document from 1644 in the Museum Heineanum at Halberstadt (Germany) encouraged to collect, so far as possible, all complete records (date, place) of the Bee-eater (Merops apiaster) north of the Alps in the period between 1500 and 1800. Comparison with long term climate curbs proved, that the Bee-Eater is a sensitive indicator for mild(More)
This paper presents the first record of two native Mediterranean cymothoid species caught attached to introduced Lessepsian rabbitfishes. This is also the first record of cymothoids from the coastal waters of Libya. Anilocra physodes was collected from Siganus luridus while Nerocila bivittata was found on both Siganus rivulatus and S. luridus. Rabbitfishes(More)