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FI Fischereiökologie

Referierte Publikationen von Prof. Dr. Ulfert Focken

  1. 0

    Hermann C, Dahlke FT, Focken U, Trommsdorff M (2022) Aquavoltaics: dual use of natural and artificial water bodies for aquaculture and solar power generation. In: Gorjian S, Campana PE (eds) Solar energy advancements in agriculture and food production systems. London: Academic Press, pp 211-236

  2. 1

    Rebelein A, Focken U (2021) Microplastic fiber diet - Fiber-supplemented pellets for small fish. MethodsX 8:101204, DOI:10.1016/j.mex.2020.101204


  3. 2

    Reiser S, Sähn N, Pohlmann DM, Willenberg M, Focken U (2021) Rearing juvenile brown Salmo trutta (L.), and rainbow trout Oncorhynchus mykiss (Walbaum), in earthen ponds with and without an induced current. J Appl Aquacult 33(1):32-52, DOI:10.1080/10454438.2019.1678545

  4. 3

    Mayrhofer R, Menanteau-Ledouble S, Pucher J, Focken U, El-Matbouli M (2020) Aeromonas spp. suggested as the causative agents of red spot disease in northern Vietnamese grass carp Ctenopharyngodon idella. Diseases Aquat Organ 139:113-119, DOI:10.3354/dao03479


  5. 4

    Barreto-Curiel F, Focken U, D'Abramo LR, Mata-Sotres J, Viana MT (2019) Assessment of amino acid requirements for Totoaba macdonaldi at different levels of protein using stable isotopes and a non-digestible protein source as a filler. Aquaculture 503:550-561, DOI:10.1016/j.aquaculture.2019.01.038

  6. 5

    Reiser S, Pohlmann DM, Koops U, Gröger JP, Focken U (2019) Using gravel for environmental enrichment in salmonid hatcheries: The effect of gravel size during egg incubation, endogenous and first feeding in rainbow trout. J Appl Ichthyol 35(2):465-472, DOI:10.1111/jai.13884

  7. 6

    Callier MD, Byron CJ, Bengtson DA, Cranford PJ, Cross SF, Focken U, Jansen HM, Kamermans P, Kiessling A, Landry T, O'Beirn F, Petersson E, Rheault RB, Strand O, Sundell K, Svaasand T, Wykfors GH, McKindsey CW (2018) Attraction and repulsion of mobile wild organisms to finfish and shellfish aquaculture: a review. Reviews Aquacult 10(4):924-949, DOI:10.1111/raq.12208

  8. 7

    Krome C, Schuele F, Jauncey K, Focken U (2018) Influence of a sodium formate / formic acid mixture on growth of juvenile common carp (Cyprinus carpio) fed different fishmeal replacement levels of detoxified Jatropha curcas kernel meal in practical, mixed diets. J Appl Aquacult 30(2):137-156, DOI:10.1080/10454438.2017.1412845

  9. 8

    Krome C, Jauncey K, Lohaus G, Focken U (2018) Phytate analysis and phytase application in Jatropha curcas kernel meal for use in aquaculture feeds. AACL Bioflux 11(3):690-700


  10. 9

    Kusche H, Hillgruber N, Rößner Y, Focken U (2018) The effect of different fish feed compositions on delta13C and δ15N signatures of sea bass and its potential value for tracking mariculture-derived nutrients. Isotopes Environ Health Stud 54(1):28-40, DOI:10.1080/10256016.2017.1361419

  11. 10

    Barreto-Curiel F, Focken U, D'Abramo LR, Cuarón JA, Viana MT (2018) Use of isotopic enrichment to assess the relationship among dietary protein levels, growth and nitrogen retention in juvenile Totoaba macdonaldi. Aquaculture 495:794-802, DOI:10.1016/j.aquaculture.2018.06.001

  12. 11

    Mayrhofer R, Menanteau-Ledouble S, Pucher J, Focken U, El-Matbouli M (2017) Leaves from banana (Musa nana) and maize (Zea mays) have no phyto-prophylactic effects on the susceptibility of grass carp (Ctenopharyngodon idella) to Aeromonas hydrophila infection. BMC Vet Res 13:329, DOI:10.1186/s12917-017-1255-5


  13. 12

    Barreto-Curiel F, Focken U, D'Abramo LR, Viana MT (2017) Metabolism of Seriola lalandi during starvation as revealed by fatty acid analysis and compound-specific analysis of stable isotopes within amino acids. PLoS One 12(1):e0170124, DOI:10.1371/journal.pone.0170124


  14. 13

    Kusche H, Hillgruber N, Rößner Y, Focken U (2017) Plant protein-based feeds and commercial feed enable isotopic tracking of aquaculture emissions into marine macrozoobenthic bioindicator species. Isotopes Environ Health Stud 53(3):261-273, DOI:10.1080/10256016.2016.1267166

  15. 14

    Pucher J, Focken U (2017) Uptake of nitrogen from natural food into fish in differently managed polyculture ponds using 15N as tracer. Aquaculture Int 25(1):87-105, DOI:10.1007/s10499-016-0015-z

  16. 15

    Nguyen NT, Pucher J, Becker K, Focken U (2016) Earthworm powder as an alternative protein source in diets for common carp (Cyprinus carpioL.). Aquacult Res 47(9):2917-2927, DOI:10.1111/are.12743

  17. 16

    Krome C, Focken U (2016) Effects of earthworm, Perionyx excavatus meal in practical diets on growth and body composition of common carp, Cyprinus carpio. AACL Bioflux 9(2):340-344


  18. 17

    Pucher J, Mayrhofer R, El-Matbouli M, Focken U (2016) Effects of modified pond management on limnological parameters in small-scale aquaculture ponds in mountainous Northern Vietnam. Aquacult Res 47(1):56-70, DOI:10.1111/are.12465

  19. 18

    Breitenbach J, Nogueira Marilise, Farrè G, Zhu C, Capell T, Christou P, Fleck G, Focken U, Fraser PD, Sandmann G (2016) Engineered maize as a source of astaxanthin: processing and application as fish feed. Transgenic Res 25(6):785-793, DOI:10.1007/s11248-016-9971-3

  20. 19

    Mayrhofer R, Pucher J, Saleh M, Menanteau-Ledouble S, Bergmann S, Focken U, El-Matbouli M (2016) First detection of Cyprinid Herpesvirus 3 in cultured common carp in Vietnam. Fish Pathol 51(1):28-31, DOI:10.3147/jsfp.51.28

  21. 20

    Krome C, Jauncey K, Focken U (2016) Jatropha curcas kernel meal as a replacement for fishmeal in practical Nile tilapia, Oreochromis niloticus feeds. AACL Bioflux 9(3):590-596


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    Pucher J, Mayrhofer R, El-Matbouli M, Focken U (2014) 15N tracer application to evaluate nitrogen dynamics of food webs in two subtropical small-scale aquaculture ponds under different managements. Isotopes Environ Health Stud:in Press, DOI:10.1080/10256016.2014.922963

  23. 22

    Pucher J, Nguyen NT, Trinh THY, Mayrhofer R, El-Matbouli M, Focken U (2014) Earthworm meal as fishmeal replacement in plant based feeds for Common Carp in semi-intensive aquaculture in rural northern Vietnam. Turk J Fisheries Aquatic Sci 14:557-565, DOI:10.4194/1303-2712-v14_2_27

  24. 23

    Krome C, Jauncey K, Fedderke S, Focken U (2014) Effect of replacing different levels on dietary fishmeal with Jatropha carcas kernel meal on the development of Nile tilapia Oreochromis niloticus (Linnaeus, 1758). J Appl Ichthyol 30:507-512, DOI:10.1111/jai.12414

  25. 24

    Pucher J, Gut T, Mayrhofer R, El-Matbouli M, Viet PH, Ngoc NT, Lamers M, Streck T, Focken U (2014) Pesticide-contaminated feeds in integrated grass carp aquaculture: toxicology and bioaccumulation. Diseases Aquat Organ 108:137-147, doi:10.3354/dao02710

  26. 25

    Pucher J, Mayrhofer R, El-Matbouli M, Focken U (2014) Pond management strategies for small-scale aquaculture in northern Vietnam: fish production and economic performance. Aquaculture Int 23(1):297-314, DOI:10.1007/s10499-014-9816-0

  27. 26

    Krome C, Jauncey K, Focken U (2014) Testing two different phytases in Jatrophas carcas kernel meal based diets for Nile tilapia, Oreochromis nilticus. Israeli J Aquacult(Spec. Iss.):1-11

  28. 27

    Mamun SM, Focken U, Becker K (2013) A respirometer system to measure critical and recovery oxygen tensions of fish under simulated diurnal fluctuations in dissolved oxygen. Aquaculture Int 21(1):31-44, DOI:10.1007/s10499-012-9529-1

  29. 28

    Krome C, Jauncey K, Focken U (2013) Comparison of photometric methods for determination of phytate in Jatropha carcass kernel meal (JKM). Proc Soc Nutr Physiol 22:62

  30. 29

    Stadtlander T, Levavi Sivan B, Kerem Z, Dweik H, Qutob M, Abu-Lafi S, Francis G, Focken U (2013) Effects of a saponin fraction extracted from Trigonella foenum-graecum L. and two commercially available saponins on sex ratio and gonad histology of Nile tilapa fry, Oreochromis niloticus (L.). J Appl Ichthyol 29(1):265-267, DOI:10.1111/jai.12002

  31. 30

    Stadtlander T, Khalil WKB, Focken U, Becker K (2013) Effects of low and medium levels of red alga Nori (Porphyra yezoensis Ueda) in the diets on growth, feed utilization and metabolism in intensively fed Nile tilapia, Oreochromis niloticus (L.). Aquacult Nutr 19(1):64-73, DOI:10.1111/j.1365-2095.2012.00940.x

  32. 31

    Pucher J, Steinbronn S, Mayrhofer R, Schad I, El-Matbouli M, Focken U (2013) Improved sustainable aquaculture systems for small-scale farmers in Northern Vietnam. In: Fröhlich HL, Schreinemachers P, Stahr K, Clemens G (eds) Sustainable land use and rural development in Southeast Asia: innovations and policies for mountainous areas. New York; Berlin; Heidelberg: Springer, pp 281-317

  33. 32

    Gaye-Siessegger J, Mamun SM, Brinker A, Focken U (2013) Improving estimates of trophic (Delta-trophic) for diet reconstruction studies using enzyme activities. Comp Biochem Physiol A Mol Integr Physiol 164(4):579-583, DOI:10.1016/j.cbpa.2013.01.003

  34. 33

    Nguyen NT, Focken U (2012) Earthworms as a potential source of animal protein for aquafeeds for common carp. Proc Soc Nutr Physiol(21):167

  35. 34

    Schober Gonçalves Lima J, Ccopa Rivera E, Focken U (2012) Emergy evaluation of organic and conventional marine shrimp farms in Guaraíra Lagoon, Brazil. J Cleaner Prod 35:194-202, DOI:10.1016/j.jclepro.2012.05.009

  36. 35

    Harter T, Buhrke F, Kumar V, Focken U, Makkar HPS, Becker K (2011) Substitution of fish meal by Jatropha curcas kernel meal: Effects on growth performance and body composition of white leg shrimp (Litopenaeus vannamei). Aquacult Nutr 17(5):542-548, DOI:10.1111/j.1365-2095.2010.00845.x

  37. 36

    Gaye-Siessegger J, McCullagh JS, Focken U (2011) The effect of dietary amino acid abundance and isotopic composition on the growth rate, metabolism and tissue ð13C of rainbow trout. Brit J Nutr 105(12):1764-1771, DOI:10.1017/S0007114510005696

  38. 37

    Dongmeza E, Francis G, Steinbronn S, Focken U, Becker K (2010) Investigations on the digestibility and metabolizability of the major nutrients and energy of maize leaves and barnyard grass in grass carp (Ctenopharyngodon idella). Aquacult Nutr 16(3):313-326, DOI:10.1111/j.1365-2095.2009.00667.x

  39. 38

    McCullagh JS, Gaye-Siessegger J, Focken U (2010) Studies on amino acid metabolism in rainbow trout: effect of dietary amino acid composition on growth performance and Omega13 C of amino acids. EAAP Sci Ser 127:143-144

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