Environmental Biology of Fishes

, Volume 41, Issue 1–4, pp 247–268 | Cite as

The comparative reproductive styles of two closely related African minnows (Pseadobarbus afer andP. asper) inhabiting two different sections of the Gamtoos River system

  • Jim A. Cambray
Article

Synopsis

Two species of a monophyletic lineage of flexible-rayed redfin minnows,Pseudobarbus afer andP. asper, were studied to establish if there were any significant differences in their reproductive styles. They are sister species with few morphological or meristic differences.P. afer andP. asper are open substrate benthic spawners on coarse bottoms (rocks) and non-guarders of non-adhesive eggs. Their young are photophobic as free embryos. Riverine spawning sites indicated a conservative tendency and represented a phylogenetic constraint as compared to the more variable attributes, such as egg size, which were under environmental control within the limits expressed by the genotype. The combination of life-history attributes, gonadosomatic index, fecundity, egg size, investment per clutch, number of clutches per season and reproductive lifespan was found to be different forP. afer andP. asper. P. asper is derived and atypical of otherPseudobarbus species studied to date. Differences betweenP. afer andP. asper are directly related to the two distinct environments inhabited by these species-coastal Cape Fold Belt mountain streams and the inland Karoo streams of the Gamtoos River system.P. asper may have reverted, by juvenilization, to a more altricial form to survive the turbid, intermittent Karoo stream.

Key words

Alternative life-history Altricial Cyprinidae Egg size Fecundity Generalist Life-history Multiple spawn Precocial Seasonality Sister species Spawning Specialist Water regulation 

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References cited

  1. Bagenal, T.B. 1978. Aspects of fish fecundity. pp. 75–101.In: S.D. Gerking (ed.) Ecology of Freshwater Fish Production, Blackwell, Oxford.Google Scholar
  2. Balon, E.K. 1975. Reproductive guilds of fishes: a proposal and definition. J. Fish. Res. Board Can. 32: 821–864.Google Scholar
  3. Balon, E.K. 1980. Early ontogeny of lake chary,Salvelinus (Cristivomer) namaycush. pp. 485–562.In: E.K. Balon (ed.) Charrs: Salmonid Fishes of the genusSalvelinus, Perspectives in Vertebrate Science 1, Dr W. Junk Publishers, The Hague.Google Scholar
  4. Balon, E.K. 1981a. Additions and amendments to the classification of reproductive styles in fishes. Env. Biol. Fish. 6: 377–389.CrossRefGoogle Scholar
  5. Balon, E.K. 1981b. Saltatory processes and altricial to precocial forms in the ontogeny of fishes. Amer. Zool. 21: 567–590.Google Scholar
  6. Balon, E.K. 1985. Early life histories of fishes: new developmental, ecological and evolutionary perspectives. Developments in Env. Biol. Fish. 5, Dr W. Junk Publishers, Dordrecht. 280 pp.Google Scholar
  7. Balon, E.K. 1988a. Tao of life: universality of dichotomy in biology. 1. The mystic awareness. Rivista di Biologia/Biology Forum 81: 185–231.Google Scholar
  8. Balon, E.K. 1988b. Tao of life: universality of dichotomy in biology. 2. The epigenetic mechanisms. Rivista di Biologia/Biology Forum 81: 339–380.PubMedGoogle Scholar
  9. Balon, E.K. 1990. Epigenesis of an epigeneticist: the development of some alternative concepts on the early ontogeny and evolution of fishes. Guelph Ichthyol. Rev. 1: 1–48.Google Scholar
  10. Breder, C.M. & D.E. Rosen. 1966. Modes of reproduction in fishes. Natural History Press, New York. 941 pp.Google Scholar
  11. Bruton, M.N. 1989. The ecological significance of alternative life-history styles. pp. 503—553.In: Bruton (ed.) Alternative Life-History Styles of Animals, Perspectives in Vertebrate Science 6, Kluwer Academic Publishers, Dordrecht.Google Scholar
  12. Burt, A., D.L. Kramer, K. Nakatsuru & C. Spry. 1988. The tempo of reproduction inHyphessobrycon pulchripinnis (Characidae), with a discussion on the biology of ‘multiple spawning’ in fishes. Env. Biol. Fish. 22: 15–27.Google Scholar
  13. Cambray, J.A. 1982. The life-history strategy of a minnow,Barbus anoplus, in a man-made lake in South Africa. M.Sc. Thesis, Rhodes University, Grahamstown. 248 pp.Google Scholar
  14. Cambray, J.A. 1991. The effects on fish spawning and management implications of impoundment water releases in an intermittent South African river. Regul. Rivers 6: 39–52.Google Scholar
  15. Cambray, J.A. 1992. A comparative study of the life histories of the sister species,Pseudobarbus after andPseudobarbus asper, in the gamtoos River system, South Africa. Ph.D. Thesis, Rhodes University, Grahamstown. 276 pp.Google Scholar
  16. Cambray, J.A. & M.N. Bruton. 1984. The reproductive strategy of a barb,Barbus anoplus (Pisces: Cyprinidae), colonizing a man-made lake in South Africa. J. Zool. (Lond.) 204: 143–168.Google Scholar
  17. Cambray, J.A. & K. Meyer. 1988. Early ontogeny of an endangered, relict, cold-water cyprinid from Lesotho,Oreodaimon quathlambae (Barnard, 1938). Rev. Hydrobiol. trop. 21: 309–333.Google Scholar
  18. Cambray, J.A. & C.T. Stuart. 1985. Aspects of the biology of a rare redfin minnow,Barbus burchelli (Pisces, Cyprinidae), from South Africa. S. Afr. J. Zool. 20: 155–165.Google Scholar
  19. Carlander, K.D. 1950. Handbook of freshwater fishery biology. C. Brown, Dubuque. 752 pp.Google Scholar
  20. Heins, D.C., G.E. Gunning & J.D. Williams. 1980. Reproduction and population structure of an undescribed species ofNotropis (Pisces: Cyprinidae) from Mobile Bay Drainage, Alabama. Copeia 1980: 822–830.Google Scholar
  21. Hubbs, C. 1995. Darter reproductive seasons. Copeia 1985: 56–68.Google Scholar
  22. LeCren, E.D. 1951. The length-weight relationship and seasonal cycle in gonad weight and condition in the perch (Perca fluviatilis). J. Anim. Ecol. 20: 201–219.Google Scholar
  23. Mann, R.H.K., C.A. Mills & D.T. Crisp. 1984. Geographical variation in the life-history tactics of some species of freshwater fish. pp. 171–186.In: G.W. Potts & R.J. Wootton (ed.) Fish Reproduction: Strategies and Tactics, Academic Press, London.Google Scholar
  24. Miller, P.J. 1984. The tokology of gobioid fishes. pp. 119–153.In: G.W. Potts & R.J. Wootton (ed.) Fish Reproduction: Strategies and Tactics, Academic Press, London.Google Scholar
  25. Miller, R.G. 1980. Simultaneous statistical inference. 2nd edn. Springer, New York. 299 pp.Google Scholar
  26. Nikolsky, G.V. 1963. The ecology of fishes. Academic Press, London. 352 pp.Google Scholar
  27. Phillips, G.L. 1969. Accuracy of fecundity estimates for the minnowChrosomus erthrogaster (Cyprinidae). Trans. Amer. Fish. Soc. 3: 524–526.Google Scholar
  28. Reid, R.G.B. 1985. Evolutionary theory: the unfinished synthesis. Croom Helm, London. 405 pp.Google Scholar
  29. Ricklefs, R.E. 1979. Adaptation, constraint, and compromise in avian postnatal development. Biol. Rev. 54: 269–290.PubMedGoogle Scholar
  30. Sire, J.YY & I. Arnulf. 1990. The development of squamation in four teleostean fishes with a survey of the literature. Jap. J. Ichthyol. 37: 133–143 South African Red Data Book — Fishes. Afr. Nat. Sci. Prog. Rep. 137. 199 pp.Google Scholar
  31. Skelton, P.H. 1980. Systematics and biogeography of the redfinBarbus species (Pisces: Cyprinidae) from southern Africa. Ph.D. Thesis, Rhodes University, Grahamstown. 416 pp.Google Scholar
  32. Skelton, P.H. 1987 South African Red Data Book — Fishes. S.Google Scholar
  33. Skelton, P.H. 1988. A taxonomic revision of the redfin minnows (Pisces, Cyprinidae) from southern Africa. Ann. Cape Prov. Mus. (nat. Hist.) 16 (10): 201–307.Google Scholar
  34. Sokal, R.R. & F.J. Rohlf. 1973. Introduction to biostatistics. W.H. Freeman, San Francisco. 368 pp.Google Scholar
  35. Stearns, S.C. & R.E. Crandall. 1984. Plasticity for age and size at sexual maturity: a life-history response to unavoidable stress. pp. 13–33.In: G.W. Potts & R.J. Wootton (ed.) Fish Reproduction: Strategies and Tactics, Academic Press, London.Google Scholar
  36. Ware, D.M. 1984. Fitness of different reproductive strategies in teleost fishes. pp. 349–366.In.: G.W. Potts & R.J. Wootton (ed.) Fish Reproduction: Strategies and Tactics, Academic Press, London.Google Scholar
  37. Wootton, R.J. 1984. Introduction: strategies and tactics in fish reproduction. pp. 1–12.In: G.W. Potts & R.J. Wootton (ed.) Fish Reproduction: Strategies and Tactics, Academic Press, London.Google Scholar
  38. Wootton, R.J. 1990. Ecology of teleost fishes. Chapman & Hall, London. 404 pp.Google Scholar
  39. Zar, J.H. 1984. Biostatistical analysis, second edition. Prentice-Hall, London. 718 pp.Google Scholar

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Jim A. Cambray
    • 1
  1. 1.Albany MuseumGrahamstownSouth Africa

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