Ecological and reproductive aspects of Neoechinorhynchus pimelodi Brasil-Sato &amp; Pavanelli (Eoacanthocephala, Neoechinorhynchidae) of Pimelodus maculatus Lacépède (Siluroidei, Pimelodidae) of the São Francisco River, Brazil

Brasil-Sato, Marília de C.; Pavanelli, Gilberto C.

doi:10.1590/S0101-81751999000100002

Abstract

Ecological and reproductive aspects of Neoechinorhynchus pimelodi Brasil-Sato & Pavanelli, 1998, in Pimelodus maculatus Lacépède, 1803 collected in the São Francisco river during periods of drought (July 1995 and 1996) and floodings (January 1996 and 1997) of this river basin are provided. In tropical regions where the amount of rainfall alters the hydrological regimen of limnological systems water temperature has not had an important role in infections of N. pimelodi in P. maculatus. Prevalence was somewhat higher during drought periods. Intensity of infection varied slightly between collecting periods. Mature male and female acanthocephalans were present in all periods. Females were predominant. Mature females were present in higher numbers during flooding periods with a corresponding decrease in juvenile acanthocephalans. Recruitment and constant losses of N. pimelodi seem to be controlled by transmission mechanisms independently of density. Mechanisms may consist of infected prey availability (potential intermediate hosts) and changes of preferred alimentary items in the diets of juvenile and mature P. maculatus.

Acanthocephala; Neoechinorhynchus pimelodi; Pimelodus maculatus; ecology; reproduction

Ecological and reproductive aspects of Neoechinorhynchus pimelodi Brasil-Sato & Pavanelli (Eoacanthocephala, Neoechinorhynchidae) of Pimelodus maculatus Lacépède (Siluroidei, Pimelodidae) of the São Francisco River, Brazil

Marília de C. Brasil-Sato^I; Gilberto C. Pavanelli^II

^IDepartamento de Biologia Animal, Universidade Federal Rural do Rio de Janeiro. Caixa Postal 74539, 23851-970 Seropédica, Rio de Janeiro, Brasil

^IINúcleo de Pesquisa em Limnologia, Ictiologia e Aquicultura. Universidade Estadual de Maringá. 87020-900, Maringá, Paraná, Brasil

ABSTRACT

Ecological and reproductive aspects of Neoechinorhynchus pimelodi Brasil-Sato & Pavanelli, 1998, in Pimelodus maculatus Lacépède, 1803 collected in the São Francisco river during periods of drought (July 1995 and 1996) and floodings (January 1996 and 1997) of this river basin are provided. In tropical regions where the amount of rainfall alters the hydrological regimen of limnological systems water temperature has not had an important role in infections of N. pimelodi in P. maculatus. Prevalence was somewhat higher during drought periods. Intensity of infection varied slightly between collecting periods. Mature male and female acanthocephalans were present in all periods. Females were predominant. Mature females were present in higher numbers during flooding periods with a corresponding decrease in juvenile acanthocephalans. Recruitment and constant losses of N. pimelodi seem to be controlled by transmission mechanisms independently of density. Mechanisms may consist of infected prey availability (potential intermediate hosts) and changes of preferred alimentary items in the diets of juvenile and mature P. maculatus.

Key words: Acanthocephala, Neoechinorhynchus pimelodi, Pimelodus maculatus, ecology, reproduction

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ACKNOWLEDGEMENTS. The authors would like to thank the Biologist Yoshimi Sato and Codevasf, Três Marias, Minas Gerais, Brazil, for the collection and identification of fish and for the help during this research; to the Biologist Ricardo M. Takemoto, Prof Marion H. Machado (both front the Universidade Estadual de Maringá, Maringá, Paraná, Brazil) and Dr. Jorge Eiras (Universidade do Porto, Porto, Portugal) for the reading of manuscript and suggestions.

Recebido em 01.VIII.1997; aceito em 25.I.1999.

AGOSTINHO, A.A. 1985. Ecologia de populações de peixes no reservatório de Itaipu nos primeiros anos de sua formação. Terceira etapa. Convênio Fuem-Surehma/Itaipu-Binacional, 508p.
AMIN, O.M. 1986. Acanthocephala from lake fishes in Wisconsin: host and seasonal distribution of species of the genus Neoechinorhynchus Hamann, 1892. Jour. Parasitol. 72: 111-118.
BASILE-MARTINS, M.A.; H.M. GODINHO; H.R CHAVES & J.M.B. BARKER. 1971. Considerações preliminares sobre o regime alimentar do mandi Pimelodus maculatus Lac. (Pisces-Siluriformes). Ciência e Cultura 23 (supl. 1): 270.
BASILE-MARTINS, M.A.; M.N. CIPÓLLI & H.M. GODINHO. 1986. Alimentação do mandi Pimelodus maculatus Lacépède, 1803 (Osteichthyes, Pimelodidae), de trechos dos rios Jaguari e Piracicaba, São Paulo - Brasil. Bol. Inst. Pesca, São Paulo, 13: 17-19.
BAUER, O.N. & S.B. KARIMOV. 1990. Patterns of parasitic infections of fishes in a water body with constant temperature. Jour. Fish Biol. 36: 1-8.
BONETTO, A.A.; C. PIGNALBERI & E. CORDIVIOLA. 1963. Ecologia alimentaria del "amarillo" y "moncholo" Pimelodus clarias (Bloch) y Pimelodus albicans (Valenciennes) (Pisces, Pimelodidae). Physis, Buenos Aires. 24: 87-94.
BRASIL-SATO, M. DE C. & G.C. PAVANELLI. 1998. Neoechinorhynchus pimelodi sp.n. (Eoacanthocephala, Neoechinorhynchidae) parasitizing Pimelodus maculatus Lacépède, "mandi-amarelo" (Siluroidei, Pimelodidae) from the basin of the São Francisco river, Três Marias, Minas Gerais, Brazil. Revta bras. Zool. 15(4): 1003-1011.
BRITSKI, H.A.; Y. SATO & A.B.S. ROSA. 1984. Manual de identificação de peixes da região de Três Marias (Com chaves de identificação para os peixes da bacia do São Francisco). Brasília, Câmara dos Deputados, Coordenação de Publicação - Codevasf, Divisão de Piscicultura e Pesca, 143p.
CHUBB, J.C. 1982. Seasonal ocurrence of helminths in freshwatrer fishes. Part IV. Adult Cestoda, Nematoda and Acanthocephala. Adv. Parasit. 20: 1-193.
DEZFULI, B.S. 1996. Cypria reptans (Crustacea: Ostracoda) as an intermediate host of Neoechinorhynchus rutili (Acanthocephala: Eoacanthocephala) in Italy. Jour. Parasitol. 82: 503-505.
DOBSON, A.P. & A.E. KEYMER. 1985. Life history models, p.347-384. In: D.W.T. Crompton & B.B. NICKOL (Eds). Biology of the Acanthocephala. Cambridge, Cambridge University Press, 519p.
KENNEDY, C.R. 1985. Regulation and dynamics of acanthocephalan populations, p.385-416. In: D.W.T. Crompton & B.B. NICKOL (Eds). Biology of the Acanthocephala. Cambridge, Cambridge University Press, 519p.
LASEE, B.A. 1989. Seasonal population dynamics and maturation of Neoechinorhynchus pungitius (Acanthocephala: Neoechinorhynchidae) infecting brook stickleback, Culaea inconstans, from Sioux Creek, Wisconsin, U.S.A. Can. Jour. Zool. 67: 590-595.
LASSIERE, O.L. 1988. Host-parasite relationships between larval Sialis lutaria (Megaloptera) and Neoechinorhynchus rutili (Acanthocephala). Parasitology 97: 331-338.
LASSIERE, O.L. & D.W.T. CROMPTON. 1988. Evidence for post-cyclic transmission in the life-history of Neoechinorhynchus rutili (Acanthocephala). Parasitology 97: 339-343.
MARGOLIS, L.; G.W. ESCH; J.C. HOLMES; A.M. KURIS & G.A. SCHAD. 1982. The use of ecological terms in parasitology (Report of an ad hoc Committee of the American Society of Parasitologists). Jour. Parasitol. 68: 131-133.
MENEZES, R.S. DE & M.F. DE MENEZES. 1946. Notas sobre o regime alimentar de algumas espécies ictiológicas de água doce do nordeste. Rev. Brasil. Biol. 6: 537-542.
MUZZALL, P.M. & W.L. BULLOCK. 1978. Seasonal occurrence and host-parasite relationships of Neoechinorhynchus saginatus Van Cleave and Bangham, 1949 in the fallfish, Semotilus corporalis (Mitchill). Jour. Parasitol. 55: 1212-1217.
SCHMIDT, G.D. 1985. Development and life cycles; p.273-305. In: D.W.T. Crompton & B. B. NICKOL (Eds). Biology of the Acanthocephala. Cambridge, Cambridge University Press, 519p.
SOKAL, R.R. & F.J. ROHLF. 1995. Biometry. USA, W.H. Freeman and Company, 3^rd ed., 887p.
SOUZA, M.R.F. & G.E. TORRES. 1984. Alimentação natural, specificidade alimentar e capacidade malacófaga de Pimelodus maculatus Lacépede, 1803 (Osteichthyes, Siluriformes, Pimelodidade) da Represa de Três Marias, MG. III Encontro Anual de Aquicultura de Minas Gerais, Belo Horizonte, p. 16-18.
ZAR, J.E. 1984. Biostatistical Analysis. Englewood, Prentice-Hall Inc., 2^nd ed., 476p.

Publication Dates

Publication in this collection
10 July 2009
Date of issue
Mar 1999

History

Accepted
25 Jan 1999
Received
01 Aug 1997

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] AGOSTINHO, A.A. 1985. Ecologia de populações de peixes no reservatório de Itaipu nos primeiros anos de sua formação. Terceira etapa. Convênio Fuem-Surehma/Itaipu-Binacional, 508p.

[2] AMIN, O.M. 1986. Acanthocephala from lake fishes in Wisconsin: host and seasonal distribution of species of the genus Neoechinorhynchus Hamann, 1892. Jour. Parasitol. 72: 111-118.

[3] BASILE-MARTINS, M.A.; H.M. GODINHO; H.R CHAVES & J.M.B. BARKER. 1971. Considerações preliminares sobre o regime alimentar do mandi Pimelodus maculatus Lac. (Pisces-Siluriformes). Ciência e Cultura 23 (supl. 1): 270.

[4] BASILE-MARTINS, M.A.; M.N. CIPÓLLI & H.M. GODINHO. 1986. Alimentação do mandi Pimelodus maculatus Lacépède, 1803 (Osteichthyes, Pimelodidae), de trechos dos rios Jaguari e Piracicaba, São Paulo - Brasil. Bol. Inst. Pesca, São Paulo, 13: 17-19.

[5] BAUER, O.N. & S.B. KARIMOV. 1990. Patterns of parasitic infections of fishes in a water body with constant temperature. Jour. Fish Biol. 36: 1-8.

[6] BONETTO, A.A.; C. PIGNALBERI & E. CORDIVIOLA. 1963. Ecologia alimentaria del "amarillo" y "moncholo" Pimelodus clarias (Bloch) y Pimelodus albicans (Valenciennes) (Pisces, Pimelodidae). Physis, Buenos Aires. 24: 87-94.

[7] BRASIL-SATO, M. DE C. & G.C. PAVANELLI. 1998. Neoechinorhynchus pimelodi sp.n. (Eoacanthocephala, Neoechinorhynchidae) parasitizing Pimelodus maculatus Lacépède, "mandi-amarelo" (Siluroidei, Pimelodidae) from the basin of the São Francisco river, Três Marias, Minas Gerais, Brazil. Revta bras. Zool. 15(4): 1003-1011.

[8] BRITSKI, H.A.; Y. SATO & A.B.S. ROSA. 1984. Manual de identificação de peixes da região de Três Marias (Com chaves de identificação para os peixes da bacia do São Francisco). Brasília, Câmara dos Deputados, Coordenação de Publicação - Codevasf, Divisão de Piscicultura e Pesca, 143p.

[9] CHUBB, J.C. 1982. Seasonal ocurrence of helminths in freshwatrer fishes. Part IV. Adult Cestoda, Nematoda and Acanthocephala. Adv. Parasit. 20: 1-193.

[10] DEZFULI, B.S. 1996. Cypria reptans (Crustacea: Ostracoda) as an intermediate host of Neoechinorhynchus rutili (Acanthocephala: Eoacanthocephala) in Italy. Jour. Parasitol. 82: 503-505.

[11] DOBSON, A.P. & A.E. KEYMER. 1985. Life history models, p.347-384. In: D.W.T. Crompton & B.B. NICKOL (Eds). Biology of the Acanthocephala. Cambridge, Cambridge University Press, 519p.

[12] KENNEDY, C.R. 1985. Regulation and dynamics of acanthocephalan populations, p.385-416. In: D.W.T. Crompton & B.B. NICKOL (Eds). Biology of the Acanthocephala. Cambridge, Cambridge University Press, 519p.

[13] LASEE, B.A. 1989. Seasonal population dynamics and maturation of Neoechinorhynchus pungitius (Acanthocephala: Neoechinorhynchidae) infecting brook stickleback, Culaea inconstans, from Sioux Creek, Wisconsin, U.S.A. Can. Jour. Zool. 67: 590-595.

[14] LASSIERE, O.L. 1988. Host-parasite relationships between larval Sialis lutaria (Megaloptera) and Neoechinorhynchus rutili (Acanthocephala). Parasitology 97: 331-338.

[15] LASSIERE, O.L. & D.W.T. CROMPTON. 1988. Evidence for post-cyclic transmission in the life-history of Neoechinorhynchus rutili (Acanthocephala). Parasitology 97: 339-343.

[16] MARGOLIS, L.; G.W. ESCH; J.C. HOLMES; A.M. KURIS & G.A. SCHAD. 1982. The use of ecological terms in parasitology (Report of an ad hoc Committee of the American Society of Parasitologists). Jour. Parasitol. 68: 131-133.

[17] MENEZES, R.S. DE & M.F. DE MENEZES. 1946. Notas sobre o regime alimentar de algumas espécies ictiológicas de água doce do nordeste. Rev. Brasil. Biol. 6: 537-542.

[18] MUZZALL, P.M. & W.L. BULLOCK. 1978. Seasonal occurrence and host-parasite relationships of Neoechinorhynchus saginatus Van Cleave and Bangham, 1949 in the fallfish, Semotilus corporalis (Mitchill). Jour. Parasitol. 55: 1212-1217.

[19] SCHMIDT, G.D. 1985. Development and life cycles; p.273-305. In: D.W.T. Crompton & B. B. NICKOL (Eds). Biology of the Acanthocephala. Cambridge, Cambridge University Press, 519p.

[20] SOKAL, R.R. & F.J. ROHLF. 1995. Biometry. USA, W.H. Freeman and Company, 3^rd ed., 887p.

[21] SOUZA, M.R.F. & G.E. TORRES. 1984. Alimentação natural, specificidade alimentar e capacidade malacófaga de Pimelodus maculatus Lacépede, 1803 (Osteichthyes, Siluriformes, Pimelodidade) da Represa de Três Marias, MG. III Encontro Anual de Aquicultura de Minas Gerais, Belo Horizonte, p. 16-18.

[22] ZAR, J.E. 1984. Biostatistical Analysis. Englewood, Prentice-Hall Inc., 2^nd ed., 476p.