Environmental Biology of Fishes

, Volume 62, Issue 1–3, pp 195–200 | Cite as

Habitat and Population Data of Troglobitic Armored Cave Catfish, Ancistrus Cryptophthalmus Reis, 1987, from Central Brazil (Siluriformes: Loricariidae)

  • Eleonora Trajano


Population ecology of the troglobitic armored catfish, A. cryptophthalmus, from caves in São Domingos karst area of central Brazil, was studied in a two-census capture-mark-recapture study carried out during the dry season of 1999. Like many loricariids, including epigean Ancistrus catfishes from that area, A. cryptophthalmus is a typical bottom-dweller with a strong preference for rocky substrates in fast-flowing stream sectors. Relatively high population densities, when compared to other cavefishes, were recorded in the studied cave sections: 0.9 individuals m−2 in Angélica Cave and 0.5 individuals m−2 in Passa Três Cave. Passa Três Stream is a small tributary of the São Vicente Cave system, and the estimated population for Passa Três Cave (ca. 2000 m long) is around 1000 individuals. On the other hand, the large Angélica Cave Stream (∼8 km long) harbors a very large population, conservatively estimated at 20 000 individuals. No fish movements of distances longer than 100 m were recorded in the 40-day period. In Passa Três Cave, a few movements of distances up to 60 m were detected. Proportion of mature females in Angélica Cave was higher than in Passa Três Cave, possibly reflecting a greater food availability in the first cave. Mean individual growth rates in Angélica Cave (1.35 mm month−1 for size class <41 mm SL, 0.17 mm month−1 for size class >41 mm SL) point to relatively high longevities, possibly attaining 15 years.

Angélica Cave capture-mark-recapture census karst Passa Três Cave population ecology 


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  1. Balon, E. 1988. Tao of life: universality of dichotomyin biology. 1. The mystic awareness. Rivista di Biologia/Biology Forum 81: 185–230.Google Scholar
  2. Balon, E. 1990. Epigenesis of an epigeneticist: thedevelopment of some alternative concepts on the early ontogeny and evolution of fishes. Guelph Ichthyol. Rev. 1: 1–42.Google Scholar
  3. Begon, M. 1979. Estimatinganimal abundance, Edward Arnold, London. 97 pp.Google Scholar
  4. Blower, J.G.,L.M. Cook & J.A. Bishop. 1981. Estimating the size of animal populations. George Allen & Unwin, London. 128 pp.Google Scholar
  5. Ford, D.C. & P.W. Williams. 1989. Karst geomorphology and hydrology. Unwin Hyman, London. 601 pp.Google Scholar
  6. Mattheus, W.J. 1998. Patterns in freshwater fishecology. Chapman & Hall, New York. 756 pp.Google Scholar
  7. Mendes, L.F. 1995.Observations on the ecology and behavior of a new species of troglobitic catfish from northeastern Brazil (Siluriformes, Pimelodidae). Mém. Biospéol. 22: 99–101.Google Scholar
  8. Nimer, E. 1989. Climatologia do Brasil,IBGE, Rio de Janeiro. 421 pp.Google Scholar
  9. Reis, R.E. 1987. Ancistruscryptophthalmus sp. n., a blind mailed catfish from the Tocantins River basin, Brazil (Pisces, Siluriformes, Loricariidae). Rev. fr. Aquariol. 14: 81–84.Google Scholar
  10. Trajano, E. 1991a. Populational ecology of Pimelodella kronei, troglobiticcatfish from southeastern Brazil (Siluriformes, Pimelodidae). Env. Biol. Fish. 30: 407–421.Google Scholar
  11. Trajano, E. 1991b. Agonistic behavior of Pimelodellakronei, a troglobitic catfish from southeastern Brazil (Siluriformes, Pimelodidae). Behav. Processes 23: 113–124.Google Scholar
  12. Trajano, E. 1997a. Synopsis ofBrazilian troglomorphic fishes. Mém. Biospéol. 24: 119–126.Google Scholar
  13. Trajano, E. 1997b. Population ecology of Trichomycterusitacarambiensis, a cave catfish from eastern Brazil (Siluriformes, Trichomycteridae). Env. Biol. Fish. 50: 357–369.Google Scholar
  14. Trajano, E. 1997c. Food andreproduction of Trichomycterus itacarambiensis, cave catfish from south-eastern Brazil. J. Fish Biol. 51: 53–63.Google Scholar
  15. Trajano, E. 2001. Ecology ofsubterranean fishes: an overview. Env. Biol. Fish. 62: 00–00 (this volume).Google Scholar
  16. Trajano, E. & F.A. Bockmann. 2000. Ecology and behavior of a newcave catfish of the genus Taunayia from northeastern Brazil (Siluriformes, Heptapterinae). Ichthyol. Explor. Freshwaters 11: 207–216.Google Scholar
  17. Trajano, E. & L.E Sanchez. 1994. Brésil. pp. 527–540. In: C. Juberthie & V. Decu (ed.) Encyclopaedia Biospeologica, Société de Biospéologie, Moulis.Google Scholar
  18. Trajano, E. & A.M. Souza. 1994. The behavior of Ancistrus cryptophthalmus, an armored blind catfish from caves of Central Brazil, with notes on syntopic Trichomycterus sp. (Siluriformes, Loricariidae, Trichomycteridae). Mém. Biospéol. 21: 151–159.Google Scholar

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Eleonora Trajano
    • 1
  1. 1.Departamento de ZoologiaInstituto de Biociências da USPSão Paulo SPBrazil

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