Cannibalism of matrinxã, Brycon cephalus, larvae after immersion of eggs to different triiodothyronine (T3) concentration


  • Antônio Fernando Gervásio Leonardo Pesquisador Cientifico do Pólo Regional do Vale do Ribeira -  APTA/SAA
  • Marcio Aquio Hoshiba Mestrando da Produção Animal (Zootecnia) da FCAV -  UNESP
  • José Augusto Senhorini Centro de Pesquisa e Gestão de Recursos Pesqueiros Continentais -  CEPTA
  • Elisabeth Criscuolo Urbinati CAUNESP/UNESP


larviculture, Brycon cephalus, thyroid hormones, attacks


The present work evaluated larvae cannibalism of matrinxã, Brycon cephalus, originated from eggs exposed to triiodothyronine in the period of 36 to 72 hours after hatching. The observed parameters were: weight and length of larvae, stomach content, presence of cannibalism and types of attack. The study was carried out at Centro de Pesquisa e Gestão de Recursos Pesqueiros Continentais (CEPTA/IBAMA), Pirassununga - SP, in November 2004. Three females were hormonally induced to spawn and pooled oocytes were fertilized and separated into four batches that constituted the treatments: L1 (control - water); L2 (0.01 ppm T3); L3 (0.05 ppm T3) and L4 (0.1 ppm T3). Eggs were exposed during 15 minutes to water or to solutions containing the different concentrations of T3. Eggs were distributed in 12 conic incubators (60 L), with three replicates per treatment. There were stocked 500 mL of eggs per incubator and hatched larvae were counted. Samples of 30 larvae per treatment were collected during occurrence of cannibalism (36, 48, 60 and 72 hours after hatching). Predator larvae (with rests of larvae in the stomach) were 50% of the total number of larvae and they presented weight 50% higher compared to that of no predator larvae (without rests of larvae in the stomach) and were 9% higher regarding length. Coefficient of variation of weight and length did not differ among treatments, showing similarity in relation to the size. The stomach content revealed that cannibalism occurred in around 50-60% of larvae, regardless the exposure to the triiodothyronine, and that attacks were characterized as head-tail and tail-head confrontations.


BARAS, E.; MAXI, M.Y.J.; NDAO, M.; MELARD,C. 2000 Sibling cannibalism in dorada under experimental conditions II. Effect of initial size heterogeneity, diet and light regime on early cannibalism. Journal of Fish Biology, London, 57:1021-1036.

BARAS, E. 1998 Bases biologiques du cannibalisme chez les poissons. Cahiers d’Ethologie Fundamentale et Appliquée, Animale et Humaine, Paris, 17: 311 -321.

Propagação artificial do matrinxã, Brycon cephalus (Gunther, 1869), (Teleostei, Characidae). Boletim Técnico CEPTA, Pirassununga, 6(2): 1-10.

BOYD, C.E. 1990 Water quality in ponds for aquaculture.Internacional Center for Aquaculture, Alabama Agricultural Experiment Station, Auburn University, 482p.

BROWN, C.L.; DOROSHOV, S.I.; NUí­"˜EZ, J.M.,HADLEY, C.; VANEENENNAAM, J.; NISHIOKA, R.S.; BERN, H.A. 1988 Maternal triiodothyronine injections cause increases in swimbladder inflation and survival rates in larval striped bass, Morone saxatilis. Journal of Experimental Zoology,Philadelphia, 248: 168-176.

DE ANGELIS, D.L.; COX, D.K.; COUNTANT, C.C. 1979 Cannibalism and size dispersal in young-ofthe-year large mouth bass: experiment and model.Ecological Modeling, Paris, 8: 133-148.

DE ANGELIS, D.L.; HACKNEY, P.A.; WEBB, J.C. 1980 A partial differential equation model of changing sizes and numbers in a cohort of juvenile fish. Environmental Biology of Fishes, Boston, 5: 261-266.

BERNARD, M.G. 1989 Relationship between metabolic and reproductive hormones in salmonid fish. Fish Physiology and Biochemistry, Amsterdam,7: 147-155.

HECHT, T. and APPELBAUM, S. 1988 Observations on intraespecific aggression and coeval sibling cannibalism by larva and juvenile Clarias gariepinus (Clariidae: Pisces) under controlled conditions. Journal of Zoology, London, 214: 21-44.

HECHT, T. and PIENNAR, A.G. 1993 A review of cannibalism and its implications in fish
larviculture. Journal of the World Aquaculture Society, Amsterdam, 24: 246-261.

HEY, J.; FARRAR, E.; BRISTOW, B.T.; STETTNER, C.; SUMMERFELT, R.C. 1996 Thyroid hormones and their influences on larval performance and incidence of cannibalism in walleye Stizostedion vitreum. Journal of the World Aquaculture Society, Amsterdam, 27: 40-51.

JOBLING, M. 1994 Fish bioenergetics. London:Chapman e Hall. 294p.

KATAVIC, I.; JUG-DUJAKOVIC, J.; GLAMUZINA, B. 1989 Cannibalism as a factor affecting the survival of intensively cultured sea bass (Dicentrarchus labrax) fingerlings, Aquaculture, Amsterdam, 77:135-143.

MERLARD, M.; PASPATIS, P.; FONTAINE, A.;CUVIER, M., BARAS, E. 2003 Size heterogeneity, , M., BARAS, E. 2003 Size heterogeneity,cannibalism and competition in cultured predatory fish larvae; biotic and abiotic influences. Aquaculture, Amsterdam, 227: 333-356.

LAM, T.J. 1994 Hormones and egg/larval quality in fish. Journal of the World Aquaculture Society, Amsterdam, 25: 2-12.

LANDINES, M.A. 2003 Efeito da triiodotironina (T3) no desenvolvimento embrionário e no desempenho das larvas de pintado (Pseudoplatystoma fasciatum), piracanjuba
(Brycon orbignyanus) e dourado (Salminus maxillosus).Jaboticabal. 146 p. (Tese de Doutoramento, Centro de Aqüicultura da UNESP, Faculdade de Ciências Agrárias e Veterinária de Jaboticabal, São Paulo).

LEONARDO, A.F.G. 2005 Ação da triiodotironina na criação de larvas de piracanjuba (Brycon orbignyanus) e do matrinxã (Brycon cephalus). Jaboticabal. 82 p. (Tese de Doutoramento, Centro de Aqüicultura da UNESP, Faculdade de Ciências Agrárias e Veterinária de Jaboticabal, São Paulo).

LEONARDO. A.F.G.; ROMAGOSA. E.; BORELA. M. E.; BORELA. M.I.; BATLOUNI. S.R. 2004 Induced spawning of hatchery-raised Brasilian catfish, cachara,Pseudoplatystoma fasciatum, (Linnaeus, 1766) Aquaculture, Amsterdam, 240: 451-461.

LIAO, C.I.; SU, H.M.; CHANG, E.Y. 2001 Techinques in finfish larviculture in Taiwan. Aquaculture, Amsterdam, 200: 1-31.

LOADMAN, N.L.; MOODIE, G.E.F.; MATHIAS, J.A.1986 Significance of cannibalism in larval walleye (Stizostedion vitreum). Canadian Journal of Fisheries and Aquatic Sciences, Ottawa, 43: 613-618.

MYLONAS, C.C.; SULLIVAN, C.V.; HINSHAW, J.M.1994 Thyroid hormones in brown trout (Salmo trutta) reproduction and early development. Fish Physiology and Biochemistry, Amsterdam, 13: 485-493.

e caracterização de fêmeas de matrinxã, Brycon cephalus, induzidas a reprodução. Boletim do Instituto de Pesca, São Paulo, 27: 113-121.

SENHORINI, J.A.; MANTELATTO, F.L.M.;CASANOVA, S.M.C 1998 Growth and survival
of larvae of Amazon species "matrinxã" Brycon cephalus (Pisces, Characidae), in larviculture ponds. Boletim Técnico do CEPTA, Pirassununga,11: 13-28.

SMITH, C. and REAY, P. 1991 Cannibalism in teleost fish. Reviews in Fish Biology and Fisheries, Amsterdam, 1: 16-29.

URBINATI, E.C.; SOARES, M.F.; SENHORINI, J.A. 2003 Preliminary study of the effect of maternal triiodithyronine on early development of matrinxã, Brycon cephalus (Characidae). Journal of Aquaculture in the Tropics, Kharagpur, 18 (3): 217-224.

VASQUES. L.H. 2003 Participação do hormônio triiodotironina (T3) no desenvolvimento inicial do matrinxã Brycon cephalus. Jaboticabal. 146 p.(Tese de Doutoramento, Centro de Aqüiculturada UNESP, Faculdade de Ciências Agrárias e
Veterinária de Jaboticabal, São Paulo).

WOYNAROVICH, E. and SATO, Y. 1990 Special rearing of larvae and post-larvae of matrinxã (Brycon lundii) and dourado (Salminus brasiliensis). In: HARVEY, B, CAROSFELD, J., (eds). Workshop on larval rearing of finsfish. (s.I) CIDA, ICSU, (s.I) CIDA, ICSU,CASAFA.



Most read articles by the same author(s)

1 2 > >>