Hydrobiologia

, Volume 703, Issue 1, pp 113–131 | Cite as

Comparative feeding ecology of invasive Ponto-Caspian gobies

  • Joerg Brandner
  • Karl Auerswald
  • Alexander F. Cerwenka
  • Ulrich K. Schliewen
  • Juergen Geist
Primary Research Paper

Abstract

Invasions of Ponto-Caspian gobiid fishes are suspected to cause regime shifts in freshwater ecosystems. This study compared the trophic niche differentiations of Neogobius melanostomus and Ponticola kessleri in the upper Danube River using stable isotope analyses (δ13C and δ15N), gut content analyses and morphometric analyses of the digestive tract. Both species were identified as predacious omnivores with high dietary overlap and a generalistic feeding strategy. Amphipods (especially invasive Dikerogammarus spp.) contributed 2/3 to the index of food importance. δ15N-signatures of N. melanostomus revealed an ontogenetic diet shift and significantly exceeded those in P. kessleri by ~1.5‰, indicating a niche separation of half a trophic level. P. kessleri had shorter uncoiled intestinal tracts than N. melanostomus, indicating a narrower niche and adaptation to animal food. Trophic niches in both species expanded during the growth period with increasing intraguild predation and cannibalism in P. kessleri and increasing molluscivory in N. melanostomus. P. kessleri showed a higher degree of specialization and more stable feeding patterns across seasons, whereas N. melanostomus adapted its diet according to the natural prey availability. The feeding patterns of both species observed in the upper Danube River strongly differ from those in their native ranges, underlining their great plasticity. Both goby species consumed mainly other non-native species (~92% of gut contents) and seemed to benefit from previous invasions of prey species like Dikerogammarus villosus. The invasive success of gobies and their prey mirror fundamental ecological changes in large European freshwater ecosystems.

Keywords

Neogobius melanostomus Ponticola kessleri Exotic species Trophic niche Food web Stable isotopes 

References

  1. Adámek, Z., J. Andreji & J. M. Gallardo, 2007. Food habits of four bottom-dwelling gobiid species at the confluence of the Danube and Hron Rivers (South Slovakia). International Review of Hydrobiology 92: 554–563.CrossRefGoogle Scholar
  2. Ahnelt, H., P. Baňařescu, R. Spolwind, A. Harka & H. Waidbacher, 1998. Occurence and distribution of three gobiid species (Pisces: Gobiidae) in the middle and upper Danube region – example of different dispersal patterns? Biológia (Bratislava) 53: 661–674.Google Scholar
  3. Amundsen, P. A., H. M. Gabler & F. J. Staldvik, 1996. A new approach to graphical analysis of feeding strategy from stomach contents data – modification of the Costello (1990) method. Journal of Fish Biology 48: 607–614.Google Scholar
  4. Anderson, R. O. & R. M. Neumann, 1996. Length, weight and associated structural indices. In Murphy, B. R. & D. W. E. Willis (eds), Fisheries Techniques, 2nd ed. American Fisheries Society, Bethesda, MD, USA: 732 pp.Google Scholar
  5. Auerswald, K., M. H. O. M. Wittmer, A. Zazzo, R. Schäufele & H. Schnyder, 2010. Biases in the analysis of stable isotope discrimination in food webs. Journal of Applied Ecology 47: 936–941.CrossRefGoogle Scholar
  6. Azour, F., 2011. Fødebiologi hos den sortmundede kutling Neogobius melanostomus I danske farvande. Copenhagen: Biologistuderende ved Københavns Universitet (in Danish) [available on internet at http://snm.ku.dk/forskning/projekter/fiskeatlas/billeder/Sortmundet_kutlings_f_debiologi_i_DK.pdf/] (day of download: May 30th, 2012).
  7. Balfour, H., 1988. Nutrition of pond fishes. Cambridge University Press: 24–25.Google Scholar
  8. Barton, D. R., R. A. Johnson, L. Campbell, J. Petruniak & M. Petterson, 2005. Effects of round gobies (Neogobius melanostomus) on dreissenid mussels and other invertebrates in Eastern Lake Erie, 2002–2004. Journal of Great Lakes Research 31: 252–261.CrossRefGoogle Scholar
  9. Beisel, J. N. & S. Devin, 2007. Biomonotony: definition and assessment for macroinvertebrates in European running waters. In Biological Invaders in Inland Waters: Profiles, Distribution, and Threats. Invading Nature – Springer Series in Invasion Ecology, vol. 2. Springer, Netherlands: 369–379.Google Scholar
  10. Bij de Vaate, A., K. Jazdzewski, H. A. M. Ketelaars, S. Gollasch & G. van der Velde, 2002. Geographical patterns in range extension of Ponto-Caspian macroinvertebrate species in Europe. Canadian Journal of Fisheries and Aquatic Sciences 59: 1159–1174.CrossRefGoogle Scholar
  11. Borcherding, J., S. Staas, S. Krüger, M. Ondračková, L. Šlapanský & P. Jurajda, 2011. Non-native Gobiid species in the lower River Rhine (Germany): recent range extensions and densities. Journal of Applied Ichthyology 27: 1–3.Google Scholar
  12. Borza, P., T. Erös & N. Oertel, 2009. Food resource partitioning between two invasive gobiid species (Pisces, Gobiidae) in the littoral zone of the River Danube, Hungary. International Review of Hydrobiology 94: 609–621.CrossRefGoogle Scholar
  13. Bronnenhuber, J. E., B. A. Dufour, D. M. Higgs & D. D. Heath, 2011. Dispersal strategies, secondary range expansion and invasion genetics of the nonindigenous round goby, Neogobius melanostomus, in Great Lakes tributaries. Molecular Ecology 20: 1845–1859.PubMedCrossRefGoogle Scholar
  14. Brooks, S., 1994. An efficient and quantitative aquatic benthos sampler for use in diverse habitats with variable flow regimes. Hydrobiologia 281: 123–128.CrossRefGoogle Scholar
  15. Brown, A. V., M. D. Schram & P. P. Brussock, 1989. A vacuum benthos sampler suitable for diverse habitats. Hydrobiologia 153: 241–247.CrossRefGoogle Scholar
  16. Campbell, L. M., R. Thacker, D. Barton, D. C. G. Muir, D. Greenwood & R. E. Hecky, 2009. Re-engineering the eastern Lake Erie littoral food web: the trophic function of non-indigenous Ponto-Caspian species. Journal of Great Lakes Research 35: 224–231.CrossRefGoogle Scholar
  17. Charlebois, P. M., J. E. Marsden, R. G. Goettel, R. K. Wolfe, D. J. Jude & S. Rudnika, 1997. The round goby, Neogobius melanostomus (Pallas), a review of European and North American literature. Illinois-Indiana Sea Grant Program and Illinois Natural History Survey. INHS Special Publication No. 20.Google Scholar
  18. Corkum, L. D., M. R. Sapota & K. E. Skóra, 2004. The round goby, Neogobius melanostomus, a fish invader on both sides of the Atlantic Ocean. Biological Invasions 6: 173–181.CrossRefGoogle Scholar
  19. Crossman, E. J., E. Helm, R. Cholmondeley & K. Tuininga, 1992. First record for Canada of the Rudd, Scardinius erythrophthalmus, and notes on the introduced Round Goby, Neogobius melanostomus. Canadian Field-Naturalist 106: 206–209.Google Scholar
  20. Costello, M. J., 1990. Predator feeding strategy and prey importance: a new graphical analysis. Journal of Fish Biology 36: 261–263.CrossRefGoogle Scholar
  21. Dudgeon, D., A. H. Arthington, M. O. Gessner, Z. Kawabata, D. J. Knowler, C. Lévêque, R. J. Naiman, A. Prieur-Richard, D. Soto & M. L. J. Stiassny, 2006. Freshwater biodiversity: importance, threats, status and conservation challenges. Biological Reviews 8: 163–182.CrossRefGoogle Scholar
  22. French, J. R. P. III. & D. J. Jude, 2001. Diets and diet overlap of nonindigenous gobies and small benthic native fishes co-inhabiting the St. Clair River, Michigan. Journal of Great Lakes Research 27: 300–311.CrossRefGoogle Scholar
  23. Freyhof, J., 2003. Immigration and potential impacts of invasive freshwater fishes in Germany. Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Annual Report 2002, vol. 17: 51–58.Google Scholar
  24. Geist, J., 2011. Integrative freshwater ecology and biodiversity conservation. Ecological Indicators 11: 1507–1516.CrossRefGoogle Scholar
  25. Guelinckx, J., J. Maes, P. van den Driessche, B. Geysen, F. Dehairs & F. Ollevier, 2007. Changes in d13C and d15N in different tissues of juvenile sand goby Pomatoschistus minutus: a laboratory diet-switch experiment. Marine Ecology Progress Series 341: 205–215.CrossRefGoogle Scholar
  26. Guelinckx, J., J. Maes, B. Geysen & F. Ollevier, 2008. Estuarine recruitment of a marine goby reconstructed with an isotopic clock. Oecologia 157: 41–52.PubMedCrossRefGoogle Scholar
  27. Gutowsky, L. F. G. & M. G. Fox, 2011. Occupation, body size and sex ratio of round goby (Neogobius melanostomus) in established and newly invaded areas of an Ontario river. Hydrobiologia 671: 27–37.CrossRefGoogle Scholar
  28. Haertl, M., A. F. Cerwenka, J. Brandner, J. Borcherding, J. Geist & U. K. Schliewen, 2012. First record of Babka gymnotrachelus (Kessler, 1857) from Germany (Teleostei, Gobiidae, Benthophilinae). Spixiana 35: 155–159.Google Scholar
  29. Harka, Á. & P. Bíró, 2007. New patterns in danubian distribution of Ponto-Caspian gobies – a result of global climatic change and/or canalisation? Electronic Journal of Ichthyology 1: 1–14.Google Scholar
  30. Hammer, Ø., D. A. T. Harper & P. D. Ryan, 2001. PAST: paleontological statistics software package for education and data analysis. Palaeontologia Electronica 4: 9.Google Scholar
  31. Herder, F. & J. Freyhof, 2006. Resource partitioning in a tropical stream fish assemblage. Journal of Fish Biology 69: 571–589.CrossRefGoogle Scholar
  32. Hynes, H. B. N., 1950. The food of fresh-water sticklebacks (Gasterosteus aculeatus and Pygosteus pungitius), with a review of methods used in studies of the fishes. Journal of Animal Ecology 19: 36–58.CrossRefGoogle Scholar
  33. Hyslop, E. J., 1980. Stomach content analysis, a review of methods and their application. Journal of Fish Biology 17: 411–430.CrossRefGoogle Scholar
  34. Janssen, J. & D. J. Jude, 2001. Recruitment failure of mottled sculpin Cottus bairdi in Calumet Harbor, Southern Lake Michigan, induced by the newly introduced round goby Neogobius melanostomus. Journal of Great Lakes Research 27: 319–328.CrossRefGoogle Scholar
  35. Jaroszewska, M., K. Dabrowski, B. Wilczyńska & T. Kakareko, 2008. Structure of the gut of the racer goby Neogobius gymnotrachelus (Kessler, 1857). Journal of Fish Biology 72: 1773–1786.CrossRefGoogle Scholar
  36. Johnson, T. B., D. B. Bunnell & C. T. Knight, 2005. A potential new energy pathway in Central Lake Erie: the round goby connection. Journal of Great Lakes Research 31(Suppl. 2): 238–251.CrossRefGoogle Scholar
  37. Jude, D. J., R. H. Reider & G. R. Smith, 1992. Establishment of Gobiidae in the Great Lakes basin. Canadian Journal of Fisheries and Aquatic Sciences 49: 416–421.CrossRefGoogle Scholar
  38. Jurajda, P., J. Černý, M. Polačik, Z. Valová, M. Janáč, R. Blažek & M. Ondračková, 2005. The recent distribution and abundance of non-native Neogobius fishes in the Slovak section of the River Danube. Journal of Applied Ichthyology 21: 319–323.CrossRefGoogle Scholar
  39. Kakareko, T., D. Plachocki & J. Kobak, 2009. Relative abundance of Ponto-Caspian gobiids in the lower Vistula River (Poland) 3 to 4 years after first appearance. Journal of Applied Ichthyology 25: 647–651.CrossRefGoogle Scholar
  40. Karachile, P. K. & K. I. Stergiou, 2010. Intestine morphometrics of fishes: a compilation and analysis of bibliographic data. Acta ichthyologica et piscatoria 40: 45–54.CrossRefGoogle Scholar
  41. Karatayev, A. Y., S. E. Mastitsky, L. E. Burlakova & S. Olenin, 2008. Past, current, and future of the central European corridor for aquatic invasions in Belarus. Biological Invasions 10: 215–232.CrossRefGoogle Scholar
  42. Karlson, A. M. L., G. Almqvist, K. E. Skóra & M. Appelberg, 2007. Indications of competition between non-indigenous round goby and native flounder in the Baltic Sea. ICES Journal of Marine Science 64: 479–486.CrossRefGoogle Scholar
  43. Keller, R. P., J. Geist, J. M. Jeschke & I. Kühn, 2011. Invasive species in Europe: ecology, status, and policy. Environmental Sciences Europe 23: 23.CrossRefGoogle Scholar
  44. Kornis, M. S. & M. J. Vander Zanden, 2010. Forecasting the distribution of the invasive round goby (Neogobius melanostomus) in Wisconsin tributaries to Lake Michigan. Canadian Journal of Fisheries and Aquatic Sciences 67: 553–562.CrossRefGoogle Scholar
  45. Kornis, M. S., N. Mercado-Silva & M. J. Vander Zanden, 2012. Twenty years of invasion: a review of round goby Neogobius melanostomus biology, spread and ecological implications. Journal of Fish Biology 80: 235–285.PubMedCrossRefGoogle Scholar
  46. Kovač, V., G. M. Copp & R. P. Sousa, 2009. Life-history traits of invasive bighead goby Neogobius kessleri (Günther, 1861) from the middle Danube River, with a reflection on which goby species may win the competition. Journal of Applied Ichthyology 25: 33–37.Google Scholar
  47. Kovtun, I. V., M. Y. Nekrasova & N. I. Revina, 1974. On the diet of round goby (Neogobius melanostomus) and utilization of food supply in the Azov Sea. Russian Journal of Zoology 53: 728–736.Google Scholar
  48. Lederer, A., J. Massart & J. Janssen, 2006. Impact of round gobies (Neogobius melanostomus) on dreissenids (Dreissena polymorpha and Dreissena bugensis) and the associated macroinvertebrate community across an invasion front. Journal of Great Lakes Research 32: 1–10.CrossRefGoogle Scholar
  49. Leuven, R. S. E. W., G. van der Velde, I. Baijens, J. Snijders, C. van der Zwart, H. J. R. Lenders & A. Bij de Vaate, 2009. The river Rhine: a global highway for dispersal of aquatic invasive species. Biological Invasions 11: 1989–2008.CrossRefGoogle Scholar
  50. Lodge, D. M., 1993. Biological invasions: lessons for ecology. Trends in Ecology & Evolution 8: 133–137.CrossRefGoogle Scholar
  51. Lynch, P. L. & A. F. Mensinger, 2011. Seasonal abundance and movement of the invasive round goby (Neogobius melanostomus) on rocky substrate in the Duluth-Superior Harbor of Lake Superior. Ecology of Freshwater Fish 21: 64–74.CrossRefGoogle Scholar
  52. McMahon, K. W., B. J. Johnson & W. G. Ambrose, 2005. Diet and movement of the killifish, Fundulus heteroclitus, in a Maine salt marsh assessed using gut contents and stable isotope analyses. Estuaries 28: 966–973.CrossRefGoogle Scholar
  53. Marentette, J. R., J. L. Fitzpatrick, R. G. Berger & S. Balshine, 2009. Multiple male reproductive morphs in the invasive round goby (Apollonia melanostoma). Journal of Great Lakes Research 35: 302–308.CrossRefGoogle Scholar
  54. Maruyama, A., Y. Yamada, B. Rusuwa & M. Yuma, 2001. Change in stable nitrogen isotope ratio in the muscle tissue of a migratory goby, Rhinogobius sp., in a natural setting. Canadian Journal of Fisheries and Aquatic Sciences 58: 2125–2128.CrossRefGoogle Scholar
  55. McCutchan, J. H. Jr., W. M. Lewis, C. Kendall & C. C. McGrath, 2003. Variation in trophic shift for stable isotope ratios of carbon, nitrogen, and sulfur. Oikos 102: 378–390.CrossRefGoogle Scholar
  56. Miller, P. J., 1984. The tokology of gobioid fishes. In Potts, G. W. & R. J. Wootton (eds), Fish Reproduction: Strategies and Tactics. Wootton Academic Press, London: 119–153.Google Scholar
  57. Minchin, D., 2007. A checklist of alien and cryptogenic aquatic species in Ireland. Aquatic Invasions 2: 341–366.CrossRefGoogle Scholar
  58. Moku, M., K. Kawaguchi, H. Watanabe & A. Ohno, 2000. Feeding habits of three dominant myctophid fishes, Diaphus theta, Stenobrachius leucopsarus and S. nannochir, in the subarctic and transitional waters of the western North Pacific. Marine Ecology 207: 129–140.CrossRefGoogle Scholar
  59. Mooney, H. A. & E. E. Cleland, 2001. The evolutionary impact of invasive species. Proceedings of the National Academy of Science of the United States of America 98: 5446–5451.CrossRefGoogle Scholar
  60. Moyle, P. B. & J. E. Mount, 2007. Homogenous rivers, homogenous faunas. Proceedings of the National Academy of Sciences of the United States of America 104: 5711–5712.PubMedCrossRefGoogle Scholar
  61. Paintner, S. & K. Seifert, 2006. First record of the round goby, Neogobius melanostomus (Gobiidae), in the German Danube. Lauterbornia 58: 101–107.Google Scholar
  62. Panov, V. E., B. Alexandrov, K. Arbačiauskas, R. Binimelis, G. H. Copp, M. Grabowski, F. Lucy, R. S. E. W. Leuven, S. Nehring, M. Paunović, V. Semenchenko & O. M. Son, 2009. Assessing the risks of aquatic species invasions via European inland waterways: the concepts and environmental indicators. Integrated Environmental Assessment and Management 5: 110–126.PubMedCrossRefGoogle Scholar
  63. Pennuto, C. M., P. J. Krakowiak & C. E. Janik, 2010. Seasonal abundance, diet, and energy consumption of round gobies (Neogobius melanostomus) in Lake Erie tributary streams. Ecology of Freshwater Fish 19: 206–215.CrossRefGoogle Scholar
  64. Perga, M. E. & D. Gerdeaux, 2005. ‘Are fish what they eat’ all year round? Oecologia 144: 598–606.PubMedCrossRefGoogle Scholar
  65. Phillips, E. C., E. Meaghan, A. Washek, W. Hertel & B. M. Niebel, 2003. The Round Goby (Neogobius melanostomus) in Pennsylvania Tributary Streams of Lake Erie. Journal of Great Lakes Research 29: 34–40.CrossRefGoogle Scholar
  66. Pinchuk, V. I., E. D. Vasil’Eva, V. P. Vasil’Ev & P. J. Miller, 2003. Neogobius melanostomus (Pallas, 1814). In Miller, P. J. (ed.), The Freshwater Fishes of Europe. Vol. 8/I Mugilidae, Atherinidae, Atherinopsidae, Blennidae, Odontobutidae, Gobiidae 1. AULA-Verlag GmbH Wiebelsheim, Verlag für Wissenschaft und Forschung, Germany: 293–345.Google Scholar
  67. Polačik, M., M. Janáč, P. Jurajda, Z. Adámek, M. Ondračková, T. Trichkova & M. Vassilev, 2009. Invasive gobies in the Danube: invasion success facilitated by availability and selection of superior food resources. Ecology of Freshwater Fish 18: 640–649.CrossRefGoogle Scholar
  68. Polis, G. A., C. A. Myers & R. D. Holt, 1989. The ecology and evolution of intraguild predation: potential competitors that eat each other. Annual Review of Ecology and Systematics 20: 297–330.CrossRefGoogle Scholar
  69. Post, D. M., 2002. Using stable isotopes to estimate trophic position: models, methods, and assumptions. Ecology 83: 703–718.CrossRefGoogle Scholar
  70. Poos, M., A. J. Dextrase, A. N. Schwalb & J. D. Ackerman, 2010. Secondary invasion of the round goby into high diversity Great Lakes tributaries and species at risk hotspots: potential new concerns for endangered freshwater species. Biological Invasions 12: 1269–1284.CrossRefGoogle Scholar
  71. Ricciardi, A., 2001. Facilitative interactions among aquatic invaders: is an “invasional meltdown” occurring in the Great Lakes? Canadian Journal of Fisheries and Aquatic Sciences 58: 2013–2025.CrossRefGoogle Scholar
  72. Ricciardi, A. & H. J. Maclsaac, 2000. Recent mass invasion of the North American Great Lakes by Ponto–Caspian species. Trends in Ecology & Evolution 15: 62–65.CrossRefGoogle Scholar
  73. Ray, W. J. & L. D. Corkum, 1997. Predation of zebra mussels by round gobies, Neogobius melanostomus. Environmental Biology of Fishes 50: 267–273.CrossRefGoogle Scholar
  74. Sapota, M. R. & K. E. Skóra, 2005. Spread of alien (non-indigenous) fish species Neogobius melanostomus in the Gulf of Gdansk (south Baltic). Biological Invasions 7: 157–164.CrossRefGoogle Scholar
  75. Schoener, T. W., 1970. Nonsynchronous spatial overlap of lizards in patchy habitats. Ecology 51: 408–418.CrossRefGoogle Scholar
  76. Seifert, K. & F. Hartmann, 2000. Die Kesslergrundel (Neogobius kessleri Günther 1861), eine neue Fischart in der deutschen Donau. Lauterbornia 38: 105–108.Google Scholar
  77. Shemonaev, E. V. & E. V. Kirilenko, 2008. Some features of Biology of the Round Goby Neogobius melanostomus (Perciformes, Gobiidae) in Waters of the Kuibyshev Reservoir. Journal of Ichthyology 49: 454–459.CrossRefGoogle Scholar
  78. Simberloff, D. & B. Von Holle, 1999. Positive interactions of nonindigenous species: invasional meltdown? Biological Invasions 1: 21–32.CrossRefGoogle Scholar
  79. Simberloff, D. & L. Gibbons, 2004. Now you see them, now you don’t! – population crashes of established introduced species. Biological Invasions 6: 161–172.CrossRefGoogle Scholar
  80. Simonović, P., B. Valković & M. Paunović, 1998. Round goby Neogobius melanostomus, a new Ponto-Caspian element for Yugoslavia. Folia Zoologica 47: 305–312.Google Scholar
  81. Simonović, P., M. Paunović & S. Popović, 2001. Morphology, feeding and reproduction of the round goby, Neogobius melanostomus (Pallas) in the Danube River basin, Yugoslavia. Journal of Great Lakes Research 27: 281–289.CrossRefGoogle Scholar
  82. Skóra, K. E. & J. Rzeznik, 2001. Observations on diet composition of Neogobius melanostomus Pallas1811 (Gobiidae, Pisces) in the Gulf of Gdansk (Baltic Sea). Journal of Great Lakes Research 27: 290–299.CrossRefGoogle Scholar
  83. Stráňai, I. & J. Andreji, 2004. The first report of round goby, Neogobius melanostomus (Pisces, Gobiidae) in the waters of Slovakia. Folia Zoologica 53: 335–338.Google Scholar
  84. Strayer, D. L., V. T. Eviner, J. M. Jeschke & M. L. Pace, 2006. Understanding the long-term effects of species invasions. Trends in Ecology & Evolution 21: 645–651.CrossRefGoogle Scholar
  85. Tittizer, T., F. Schöll, M. Banning, A. Haybach & M. Schleuter, 2000. Aquatische Neozoen im Makrozoobenthos der Binnenwasserstraßen Deutschlands. Lauterbornia 39: 1–172.Google Scholar
  86. Tudela, S. & I. Palomera, 1995. Diel feeding intensity and daily ration in the anchovy Engraulis encrasicolus in the northwest Mediterranean Sea during the spawning period. Marine Ecology 129: 55–61.CrossRefGoogle Scholar
  87. Vanderploeg, H. A., T. F. Nalepa, D. J. Jude, E. L. Mills, K. T. Holeck, J. R. Liebig, I. A. Grigorovich & H. Ojaveer, 2002. Dispersal and emerging ecological impacts of Ponto-Caspian species in the Laurentian Great Lakes. Canadian Journal of Fisheries and Aquatic Sciences 59: 1209–1228.CrossRefGoogle Scholar
  88. Vander Zanden, M. J., G. Cabana & J. B. Rasmussen, 1997. Comparing trophic position of freshwater fish calculated using stable nitrogen isotope ratios (δ15N) and literature dietary data. Canadian Journal of Fisheries and Aquatic Sciences 54: 1142–1158.CrossRefGoogle Scholar
  89. Van Riel, M. C., G. van der Velde, S. Rajagopal, S. Marguillier, F. Dehairs & A. Bij de Vaate, 2006. Trophic relationships in the Lower Rhine food web during invasion and after establishment of the Ponto-Caspian invader Dikerogammarus villosus. Hydrobiologia 565: 39–58.CrossRefGoogle Scholar
  90. Van Riel, M. C., E. P. Healy, G. van der Velde & A. Bij de Vaate, 2007. Interference competition among native and invader amphipods. Acta Oecologica 31: 282–289.CrossRefGoogle Scholar
  91. Vasil’Eva, E. D. & V. P. Vasil’Ev, 2003. Neogobius kessleri Günther, 1861. In Miller, P. J. (ed.), The Freshwater Fishes of Europe. Vol. 8/I Mugilidae, Atherinidae, Atherinopsidae, Blennidae, Odontobutidae, Gobiidae 1. AULA-Verlag GmbH Wiebelsheim, Verlag für Wissenschaft und Forschung, Germany: 280–292.Google Scholar
  92. Zihler, F., 1982. Gross morphology and configuration of digestive tracts of cichlidae (teleostei, perciformes): phylogenetic and functional significance. Netherlands Journal of Zoology 32: 544–571.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • Joerg Brandner
    • 1
  • Karl Auerswald
    • 2
  • Alexander F. Cerwenka
    • 1
    • 3
  • Ulrich K. Schliewen
    • 3
  • Juergen Geist
    • 1
  1. 1.Aquatic Systems Biology Unit, Center of Life and Food Science WeihenstephanTechnische Universität MünchenFreisingGermany
  2. 2.Lehrstuhl für Grünlandlehre, Center of Life and Food Science WeihenstephanTechnische Universität MünchenFreisingGermany
  3. 3.Department of IchthyologyBavarian State Collection of Zoology (ZSM)MunichGermany

Personalised recommendations