| Effects of crude extracts of Mucuna pruriens (Fabaceae) and Carica papaya (Caricaceae) against the protozoan fish parasite Ichthyophthirius multifiliis AP Ekanem, A Obiekezie, W Kloas, K Knopf Parasitology Research 92 (5), 361-366, 2004 | 152 | 2004 |
| Richness and diversity of parasite communities in European eels Anguilla anguilla of the River Rhine, Germany, with special reference to helminth parasites B Sures, K Knopf, J Würtz, J Hirt Parasitology 119 (3), 323-330, 1999 | 115 | 1999 |
| Flagship umbrella species needed for the conservation of overlooked aquatic biodiversity G Kalinkat, JS Cabral, W Darwall, GF Ficetola, JL Fisher, DP Giling, ... Conservation Biology 31 (2), 481-485, 2017 | 91 | 2017 |
| Induction of stress by the swimbladder nematode Anguillicola crassus in European eels, Anguilla anguilla, after repeated experimental infection B Sures, K Knopf, W Kloas Parasitology 123 (2), 179-184, 2001 | 85 | 2001 |
| Impact of low water temperature on the development of Anguillicola crassus in the final host Anguilla anguilla K Knopf, J Würtz, B Sures, H Taraschewski Diseases of Aquatic Organisms 33 (2), 143-149, 1998 | 81 | 1998 |
| Differences in susceptibility of the European eel (Anguilla anguilla) and the Japanese eel (Anguilla japonica) to the swim-bladder nematode Anguillicola crassus K Knopf, M Mahnke Parasitology 129 (4), 491-496, 2004 | 76 | 2004 |
| Individual and combined effects of cadmium and 3, 3′, 4, 4′, 5-pentachlorobiphenyl (PCB 126) on the humoral immune response in European eel (Anguilla anguilla) experimentally … B Sures, K Knopf Parasitology 128 (4), 445-454, 2004 | 76 | 2004 |
| Parasites as a threat to freshwater eels? B Sures, K Knopf Science 304 (5668), 209-211, 2004 | 68 | 2004 |
| The swimbladder nematode Anguillicola crassus in the European eel Anguilla anguilla and the Japanese eel Anguilla japonica: differences in susceptibility and immunity between a … K Knopf Journal of Helminthology 80 (2), 129, 2006 | 64 | 2006 |
| Humic substances affect physiological condition and sex ratio of swordtail (Xiphophorus helleri Heckel) T Meinelt, K Schreckenbach, K Knopf, A Wienke, A Stüber, ... Aquatic sciences 66 (2), 239-245, 2004 | 63 | 2004 |
| Distribution and prevalence of Anguillicola crassus (Nematoda) in eels Anguilla anguilla of the rivers Rhine and Naab, Germany J Würtz, K Knopf, H Taraschewski Diseases of aquatic organisms 32 (2), 137-143, 1998 | 55 | 1998 |
| Low frequency ultrasound and UV-C for elimination of pathogens in recirculating aquaculture systems AAB Lakeh, W Kloas, R Jung, R Ariav, K Knopf Ultrasonics sonochemistry 20 (5), 1211-1216, 2013 | 51 | 2013 |
| Humoral immune response of European eel Anguilla anguilla experimentally infected with Anguillicola crassus K Knopf, K Naser, MHT Van der Heijden, H Taraschewski Diseases of Aquatic Organisms 42 (1), 61-69, 2000 | 46 | 2000 |
| Evaluation of an ELISA and immunoblotting for studying the humoral immune response in Anguillicola crassus infected European eel Anguilla anguilla K Knopf, K Naser, MHT Van der Heijden, H Taraschewski Diseases of aquatic organisms 43 (1), 39-48, 2000 | 41 | 2000 |
| Phenol-rich fulvic acid as a water additive enhances growth, reduces stress, and stimulates the immune system of fish in aquaculture T Lieke, CEW Steinberg, B Pan, IV Perminova, T Meinelt, K Knopf, ... Scientific Reports 11 (1), 1-12, 2021 | 36 | 2021 |
| Vaccination of eels (Anguilla japonica and Anguilla anguilla) against Anguillicola crassus with irradiated L3 K Knopf, R Lucius Parasitology 135 (5), 633-640, 2008 | 36 | 2008 |
| Nematode eel parasite found inside acanthocephalan cysts-a" Trojan horse" strategy? S Emde, S Rueckert, J Kochmann, K Knopf, B Sures, S Klimpel Parasites & vectors 7 (1), 504, 2014 | 31 | 2014 |
| The adjuvant effect of low frequency ultrasound when applied with an inactivated Aeromonas salmonicida vaccine to rainbow trout (Oncorhynchus mykiss) CC Labarca, M Makhutu, AE Lumsdon, KD Thompson, R Jung, W Kloas, ... Vaccine 33 (11), 1369-1374, 2015 | 30 | 2015 |
| Anguillicola papernai (Nematoda: Anguillicolidae) and other helminths parasitizing the African longfin eel Anguilla mossambica H Taraschewski, J Boomker, K Knopf, F Moravec Diseases of Aquatic Organisms 63 (2-3), 185-195, 2005 | 30 | 2005 |
| Fulvic acid accelerates hatching and stimulates antioxidative protection and the innate immune response in zebrafish larvae T Lieke, CEW Steinberg, S Bittmann, S Behrens, SH Hoseinifar, T Meinelt, ... Science of The Total Environment, 148780, 2021 | 21 | 2021 |
