Synopsis
Two species of a monophyletic lineage of flexible-rayed redfin minnows, Pseudobarbus afer and P. 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 and P. 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 for P. afer and P. asper. P. asper is derived and atypical of other Pseudobarbus species studied to date. Differences between P. afer and P. 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.
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References cited
Bagenal, T.B. 1978. Aspects offish fecundity. pp. 75–101. In: S.D. Gerking (ed.) Ecology of Freshwater Fish Production, Black-well, Oxford.
Balon, E.K. 1975. Reproductive guilds of fishes: a proposal and definition. J. Fish. Res. Board Can. 32: 821–864.
Balon, E.K. 1980. Early ontogeny of lake charr, Salvelinus (Cris tivomer) namaycush. pp. 485–562. In: E.K.Balon (ed.) Charrs: Salmonid Fishes of the genus Salvelinus ,Perspectives in Vertebrate Science 1, Dr W. Junk Publishers, The Hague.
Balon, E.K. 1981a. Additions and amendments to the classification of reproductive styles in fishes. Env. Biol. Fish. 6:377–389.
Balon, E.K. 1981b. Saltatory processes and altricial to precocial forms in the ontogeny of fishes. Amer. Zool. 21: 567–590.
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.
Balon, E.K. 1988a. Tao of life: universality of dichotomy in biology. 1. The mystic awareness. Rivista di Biologia/Biology Forum 81:185–231.
Balon, E.K. 1988b. Tao of life: universality of dichotomy in biology. 2. The epigenetic mechanisms. Rivista di Biologia/Biology Forum 81: 339–380.
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.
Breder, C.M. & D.E. Rosen. 1966. Modes of reproduction in fishes. Natural History Press, New York. 941 pp.
Bruton, M.N. 1989. The ecological significance of alternative lifehistory styles, pp. 503–553. In: Bruton (ed.) Alternative Life-History Styles of Animals, Perspectives in Vertebrate Science 6, Kluwer Academic Publishers, Dordrecht.
Burt, A., D.L. Kramer, K. Nakatsuru & C. Spry. 1988. The tempo of reproduction in Hyphessobrycon pulchripinnis (Characidae), with a discussion on the biology of ‘multiple spawning’ in fishes. Env. Biol. Fish. 22:15–27.
Cambray, J.A. 1982. The life-history strategy of a minnow, Bar bus anoplus ,in a man-made lake in South Africa. M.Sc. Thesis, Rhodes University, Grahamstown. 248 pp.
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.
Cambray, J.A. 1992. A comparative study of the life histories of the sister species, Pseudobarbus afer and Pseudobarbus asper ,in the Gamtoos River system, South Africa. Ph.D. Thesis, Rhodes University, Grahamstown. 276 pp.
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.
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.
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.
Carlander, K.D. 1950. Handbook of freshwater fishery biology. C. Brown, Dubuque. 752 pp.
Heins, D.C., G.E. Gunning & J.D. Williams. 1980. Reproduction and population structure of an undescribed species of Notro pis (Pisces: Cyprinidae) from Mobile Bay Drainage, Alabama. Copeia 1980: 822–830.
Hubbs, C. 1985. Darter reproductive seasons. Copeia 1985:56–68.
LeCren, E.D. 1951. The length-weight relationship and seasonal cycle in gonad weight and condition in the perch (Perca fluvia tilis). J. Anim. Ecol. 20: 201–219.
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.
Miller, P.J. 1984. The tokology of gobioid fishes. pp. 119–153. In: G.W. Potts & R.J. Wootton (ed.) Fish Reproduction: Strate-gies and Tactics, Academic Press, London.
Miller, R.G. 1980. Simultaneous statistical inference. 2nd edn. Springer, New York. 299 pp.
Nikolsky, G.V. 1963. The ecology of fishes. Academic Press, London. 352 pp.
Phillips, G.L. 1969. Accuracy of fecundity estimates for the minnow Chrosomus erthrogaster (Cyprinidae). Trans. Amer. Fish. Soc. 3: 524–526.
Reid, R.G.B. 1985. Evolutionary theory: the unfinished synthesis. Croom Helm, London. 405 pp.
Ricklefs, R.E. 1979. Adaptation, constraint, and compromise in avian postnatal development. Biol. Rev. 54: 269–290.
Sire, J.Y. & I. Arnulf. 1990. The development of squamation in four teleostean fishes with a survey of the literature. Jap. J. Ichthyol. 37:133–143.
Skelton, PH. 1980. Systematics and biogeography of the redfin Barbus species (Pisces: Cyprinidae) from southern Africa. Ph.D. Thesis, Rhodes University, Grahamstown. 416 pp.
Skelton, PH. 1987. South African Red Data Book -Fishes. S. Afr. Nat. Sci. Prog. Rep. 137.199 pp.
Skelton, PH. 1988. A taxonomic revision of the redfin minnows (Pisces, Cyprinidae) from southern Africa. Ann. Cape Prov. Mus. (nat. Hist.) 16(10): 201–307.
Sokal, R.R. & F.J. Rohlf. 1973. Introduction to biostatistics. W.H. Freeman, San Francisco. 368 pp.
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.
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.
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.
Wootton, R.J. 1990. Ecology of teleost fishes. Chapman & Hall, London. 404 pp.
Zar, J.H. 1984. Biostatistical analysis, second edition. Prentice-Hall, London. 718 pp.
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Cambray, J.A. (1994). The comparative reproductive styles of two closely related African minnows (Pseudobarbus afer and P. asper) inhabiting two different sections of the Gamtoos River system. In: Balon, E.K., Bruton, M.N., Noakes, D.L.G. (eds) Women in ichthyology: an anthology in honour of ET, Ro and Genie. Developments in environmental biology of fishes 15, vol 15. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0199-8_20
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DOI: https://doi.org/10.1007/978-94-011-0199-8_20
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