Environmental Biology of Fishes

, Volume 88, Issue 2, pp 97–104 | Cite as

Intraspecific variation in gill morphology of juvenile Nile perch, Lates niloticus, in Lake Nabugabo, Uganda

  • Jaclyn A. PatersonEmail author
  • Lauren J. Chapman
  • Pamela J. Schofield


Several studies have demonstrated intraspecific variation in fish gill size that relates to variation in dissolved oxygen (DO) availability across habitats. In Lake Nabugabo, East Africa, ecological change over the past 12 years has coincided with a shift in the distribution of introduced Nile perch such that a larger proportion of the population now inhabits waters in or near wetland ecotones where DO is lower than in open waters of the lake. In this study, we compared gill size of juvenile Nile perch between wetland and exposed (open-water) habitats of Lake Nabugabo in 2007, as well as between Nile perch collected in 1996 and 2007. For Nile perch of Lake Nabugabo [<20 cm total length (TL)], there was a significant habitat effect on some gill traits. In general, fish from wetland habitats were characterized by a longer total gill filament length and average gill filament length than conspecifics from exposed habitats. Nile perch collected from wetland areas in 2007 had significantly larger gills (total gill filament length) than Nile perch collected in 1996, but there was no difference detected between Nile perch collected from exposed sites in 2007 and conspecifics collected in 1996.


Fish respiration Gills Hypoxia Non-indigenous Piscivore 



We thank Judy Dumont for her assistance in dissecting and photographing the gills of Nile perch. Permission for this project was granted by the Uganda National Council for Science and Technology. We also thank C.A. Chapman, D. Twinomugisha and Lake Nabugabo field assistants for assistance with field collections in Uganda. Funding for this research was provided by NSERC Discovery Grant and Canada Research Chair funds to L.J. Chapman.


  1. Balirwa J (1998) Lake Victoria wetlands and the ecology of the Nile tilapia Oreochromis niloticus (L.). Dissertation, University of WageningenGoogle Scholar
  2. Balirwa JS, Chapman CJ, Chapman LJ, Cowx IG, Geheb K, Kaufman L, Lowe-McConnell RH, Seehausen O, Wanink JH, Welcomme RL, Witte F (2003) Biodiversity and fishery sustainability in the Lake Victoria basin: an unexpected marriage? Bioscience 53:703–715CrossRefGoogle Scholar
  3. Chapman LJ (2007) Morpho-physiological divergence across oxygen gradients in fishes. In: Fernandes MN, Rantin FT, Glass ML, Kapoor BG (eds) Fish respiration and the environment. Science Publish Inc, Enfield, pp 14–29Google Scholar
  4. Chapman LJ, Liem KF (1995) Papyrus swamps and the respiratory ecology of Barbus neumayeri. Environ Biol Fish 44:183–197CrossRefGoogle Scholar
  5. Chapman LJ, Hulen K (2001) Implications of hypoxia on the brain size and gill surface area of mormyrid fishes. J Zool 254:461–472CrossRefGoogle Scholar
  6. Chapman LJ, McKenzie D (2009) Behavioral responses and ecological consequences. In: Richards JG, Farrel AP, Brauner CJ (eds) Hypoxia in fishes. Elsevier, San Diego, pp 26–77Google Scholar
  7. Chapman LJ, Chapman CA, Chandler M (1996a) Wetland ecotones and refugia for endangered fishes. Biol Conserv 78:263–270CrossRefGoogle Scholar
  8. Chapman LJ, Chapman CA, Ogutu-Ohwayo R, Chandler M, Kaufman L, Keiter AE (1996b) Refugia for endangered fishes from an introduced predator in Lake Nabugabo, Uganda. Conserv Biol 10:554–561CrossRefGoogle Scholar
  9. Chapman LJ, Chapman CA, Brazeau D, McGlaughlin B, Jordan M (1999) Papyrus swamps and faunal diversification: geographical variation among populations of the African cyprinid Barbus neumayeri. J Fish Biol 54:310–327Google Scholar
  10. Chapman LJ, Galis F, Shinn J (2000) Phenotypic plasticity and the possible role of genetic assimilation: hypoxia induced trade-offs in the morphological traits of an African cichlid. Ecol Lett 3:388–393CrossRefGoogle Scholar
  11. Chapman LJ, Chapman CA, Nordlie FG, Rosenberger AE (2002) Physiological refugia: swamps, hypoxia tolerance and maintenance of fish diversity in the Lake Victoria region. Comp Biochem Physiol, Part A 133:421–437CrossRefGoogle Scholar
  12. Chapman LJ, DeWitt TJ, Tzaneva VJ, Paterson J (2007) Interdemic variation in the gill morphology of a eurytopic African cichlid. In Proceedings of the 9th International Symposium of Fish Physiology, Toxicology and Water Quality, pp 209–225Google Scholar
  13. Chapman LJ, Albert J, Galis F (2008) Developmental plasticity, genetic differentiation, and hypoxia-induced trade-offs in an African cichlid fish. The Open Evolution Journal 2:75–88CrossRefGoogle Scholar
  14. Fish GR (1956) Some aspects of respiration of six species of fish from Uganda. J Exp Biol 33:186–195Google Scholar
  15. Hendry AP, Taylor EB (2004) How much of the variation in adaptive divergence can be explained by gene flow: an evaluation using lake-stream stickleback pairs. Evolution 58:2319–2331PubMedGoogle Scholar
  16. Kaufman L (1992) Catastrophic change in species-rich freshwater ecosystems: the lessons of Lake Victoria. Bioscience 42:846–858CrossRefGoogle Scholar
  17. Kramer DL (1983) The evolutionary ecology of respiratory mode in fishes: an analysis based on the costs of breathing. Environ Biol Fish 9:145–158CrossRefGoogle Scholar
  18. Kramer DL (1987) Dissolved oxygen and fish behavior. Environ Biol Fish 18:81–92CrossRefGoogle Scholar
  19. Kramer DL, Manley D, Bourgeois R (1983) The effect of respiratory mode and oxygen concentration on the risk of aerial predation in fishes. Can J Zool 61:653–665CrossRefGoogle Scholar
  20. Langerhans RB, Chapman LJ, DeWitt TJ (2007) Complex phenotype-environment associations revealed in an East African cyprinid. J Evol Biol 20:1171–1181CrossRefPubMedGoogle Scholar
  21. McKinsey DM, Chapman LJ (1998) Dissolved oxygen and fish distribution in a Florida spring. Environ Biol Fish 53:211–233CrossRefGoogle Scholar
  22. McNeil DG, Closs GP (2007) Behavioral responses of a south-east Australian floodplain fish community to gradual hypoxia. Freshw Biol 52:412–420CrossRefGoogle Scholar
  23. Mnaya B, Wolanski E, Kiwango Y (2006) Papyrus wetlands a lunar modulated refuge for aquatic fauna. Wetland Ecology and Management 14:359–363CrossRefGoogle Scholar
  24. Nilsson GE, Östlund-Nilsson S (2004) Hypoxia in paradise: Widespread hypoxia tolerance in coral reef fishes. Proc R Soc Lond, B Biol Sci 271:S30–S33CrossRefGoogle Scholar
  25. Nilsson GE, Renshaw GMC (2004) Hypoxic survival strategies in two fishes: extreme anoxia tolerance in the North European crucian carp and natural hypoxic preconditioning in a coral-reef shark. J Exp Biol 207:3131–3139CrossRefPubMedGoogle Scholar
  26. Nilsson GE, Hobbs JP, Östlund-Nilsson S, Munday PL (2007) Hypoxia tolerance and air breathing ability correlate with habitat preference in coral-dwelling fishes. Coral Reefs 26:241–248CrossRefGoogle Scholar
  27. Paterson JA (2008) Response of an introduced aquatic predator, the Nile perch, to environmental change. Dissertation, McGill UniversityGoogle Scholar
  28. Paterson JA, Chapman LJ (2009) Fishing down and fishing hard: Ecological change in the Nile perch of Lake Nabugabo, Uganda. Ecol Freshw Fish 18:380–394Google Scholar
  29. Reist JD (1985) An empirical evaluation of several univariate methods for size variation in morphometric data. Can J Zool 63:1429–1439CrossRefGoogle Scholar
  30. Robb T, Abrahams MV (2003) Variation in tolerance to hypoxia in a predator and prey species: an ecological advantage of being small? J Fish Biol 62:1067–1081CrossRefGoogle Scholar
  31. Rosenberger AE, Chapman LJ (2000) Respiratory characters of three haplochromine cichlids: implications for persistence in wetland refugia. J Fish Biol 57:483–501CrossRefGoogle Scholar
  32. Rutjes HA (2006) Phenotypic responses to lifelong hypoxia in cichlids. Ph.D. Dissertation, Leiden UniversityGoogle Scholar
  33. Schofield PJ (1997) Feeding ecology of the introduced Nile perch (Lates niloticus) in Lake Nabugabo, Uganda: Implications for conservation of the indigenous fauna. Dissertation, University of FloridaGoogle Scholar
  34. Schofield PJ, Chapman LJ (1999) Interactions between Nile perch, Lates niloticus, and other fishes in Lake Nabugabo. Environ Biol Fish 55:343–358CrossRefGoogle Scholar
  35. Schofield PJ, Chapman LJ (2000) Hypoxia tolerance of introduced Nile perch: implications for survival of indigenous fishes in the Lake Victoria basin. African Zoology 35:35–42Google Scholar
  36. Seehausen OJ, Van Alphen JM, Witte F (1997a) Cichlid fish diversity threatened by eutrophication that curbs sexual selection. Science 277:1808–1811CrossRefGoogle Scholar
  37. Seehausen OF, Witte EF, Katunzi J, Smits S, Bouton N (1997b) Patterns of the remnant cichlid fauna in Southern Lake Victoria. Conserv Biol 11:890–904CrossRefGoogle Scholar
  38. Strauss SY, Lau JA, Carroll SP (2006) Evolutionary responses of natives to introduced species: what do introductions tell us about natural communities? Ecol Lett 9:357–374CrossRefPubMedGoogle Scholar
  39. Timmerman CM, Chapman LJ (2004) Hypoxia and interdemic variation in the sailfin molly (Poecilia latipinna). J Fish Biol 65:635–650CrossRefGoogle Scholar
  40. Tobler M, DeWitt TJ, Schlupp I, Garcia de León FJ, Herrmann R, Feulner PGD, Tiedemann R, Plath M (2008) Toxic hydrogen sulfide and dark caves: phenotypic and genetic divergence across two abiotic environmental gradients in Poecilia mexicana. Evolution 62:2643–2659CrossRefPubMedGoogle Scholar
  41. Wanink JH, Witte F (2000) Rapid morphological changes following niche shift in the zooplanktivorous cyprinid Rastrineobola argentea from Lake Victoria. Neth J Zool 50:365–372Google Scholar
  42. Wanink JH, Kashindye JJ, Goudswaard PCK, Witte F (2001) Dwelling at the oxycline: does increased stratification provide a predation refugium for the Lake Victoria sardine Rastrineobola argentea? Freshw Biol 46:75–85Google Scholar
  43. Witte FM, Welton M, Heemskerk I, Van Der Stap L, Ham C, Rutjes C, Wanink J (2008) Major morphological changes in a Lake Victoria cichlid fish within two decades. Biol J Linn Soc 94:41–52CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Jaclyn A. Paterson
    • 1
    Email author
  • Lauren J. Chapman
    • 1
    • 2
  • Pamela J. Schofield
    • 3
  1. 1.Department of BiologyMcGill UniversityMontréal, QCCanada
  2. 2.Wildlife Conservation SocietyNew YorkUSA
  3. 3.U.S. Geological SurveySoutheast Ecological Science CenterGainesvilleUSA

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