Descartes da pesca do camarão sete-barbas como fonte de alimento para aves marinhas

Branco, Joaquim Olinto

doi:10.1590/S0101-81752001000100033

Resumo

From July 1996 to June 1997, in Armação do Itapocoroy, Penha, Santa Catarina State, Brazil, monthly census were done in three areas of traditional fishery and Itacolomis islands. A total of 10021 seabirds were registered, belonging to eight species, five genus and four families. The average number of seabirds per dragging varied between 80,2 and 113,6. Sterna spp, appeared at first in 43,3% of the released by-catch, followed by Larus dominicanus Lichtenstein, 1823, Fregata magnificens Matheus, 1914, Phalacrocorax brasilianus (Humboldt, 1805) and Sula leucogaster Boddaert, 1783. The average size of the fish consumed by the seabirds oscillated from 8,3 cm (Sterna spp.) to 18,5 cm (F. magnificens), with an average time from 6,12 to 7,55 minutes per by-catch released. In general, seabirds use 84,0% of the by-catch fish as a feeding source.

Seabirds; by-catch; feeding

Descartes da pesca do camarão sete-barbas como fonte de alimento para aves marinhas

Sea-bob-shrimp fishery's by-catch as a feeding source for seabirds

Joaquim Olinto Branco

Centro de Ciências Tecnológica, da Terra e do Mar, Universidade do Vale do Itajaí. Caixa Postal 360, 88301-970 Itajaí, Santa Catarina, Brasil. E-mail: job@cttmar.univali.br

ABSTRACT

From July 1996 to June 1997, in Armação do Itapocoroy, Penha, Santa Catarina State, Brazil, monthly census were done in three areas of traditional fishery and Itacolomis islands. A total of 10021 seabirds were registered, belonging to eight species, five genus and four families. The average number of seabirds per dragging varied between 80,2 and 113,6. Sterna spp, appeared at first in 43,3% of the released by-catch, followed by Larus dominicanus Lichtenstein, 1823, Fregata magnificens Matheus, 1914, Phalacrocorax brasilianus (Humboldt, 1805) and Sula leucogaster Boddaert, 1783. The average size of the fish consumed by the seabirds oscillated from 8,3 cm (Sterna spp.) to 18,5 cm (F. magnificens), with an average time from 6,12 to 7,55 minutes per by-catch released. In general, seabirds use 84,0% of the by-catch fish as a feeding source.

Key words: Seabirds, by-catch, feeding

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AGRADECIMENTOS. À Pró-Reitoria de Pesquisa e Pós-graduação da UNIVALI, pelo apoio logístico. Aos estagiários do Laboratório de Oceanografia Biológica (Zoologia) e alunos da disciplina de Zoologia II do curso de Oceanografia/UNIVALI, pela valiosa colaboração nos trabalhos de campo.

Recebido em 21.I.2000; aceito em 09.IV.2001

Evans, P.G.H. 1984. Status and conservation of seabirds in northwest Europe (excluding Norway and USSR), 29-321 p. In: J.P. Croxall; P.G.H. Evans & R.W. Scheiber (Eds). Status and conservation of world's seabirds. Cambridge, International Council for Bird Preservation.
Furness, R.W. 1982. Competition between fisheries and seabird communities. Adv. Mar. Biol. 20:225-307.
Furness, R.W.; A.V. Hudson & k. Ensor. 1988. Interactions between scavengig seabirds and commercial fisheries around the British Isles, p. 240-268. In: J. Burger (Ed.). Seabirds & other marine vertebrates: competition, predation and other interactions. New York, Columbia Univ. Press, 339p.
Hudson, A.V. & R.W. Furness. 1989. The behaviour of seabirds foraging at fishing boats around Shetland. Ibis. 131:225-237.
Rezende, M.A. 1987. Comportamento associativo de Fregata magnificens (Fregatidae, Aves) e Sula leucogaster (Sulidae, Aves) no litoral centro-norte do Estado de São Paulo. Bol. Inst. Oceanogr., São Paulo, 35(1):1-5.
Sick, H. 1997. Ornitologia Brasileira. Rio de Janeiro, F.d. Nova Fronteira, 912p.
Thompson, K..R. & M.D. Riddy. 1995. Utilization of affal and discards from "finfish" trawlers around the Falkland Islands by the black-browed albatross Diomedea melanophris. Ibis. 137:198-206.
Wahl, T.R. & D. Heinemann. 1979. Seabirds and fishing vessels: co-ocorrence and attraction. Condor. 81:390-396.
Walter, U. & P.H. Becker. 1994. The significance of discards from the brown shrimp fisheries for seabirds. Ophelia (Suppl. 6):253-262.

Datas de Publicação

Publicação nesta coleção
30 Abr 2009
Data do Fascículo
Mar 2001

Histórico

Aceito
09 Abr 2001
Recebido
21 Jan 2000

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

[1] Evans, P.G.H. 1984. Status and conservation of seabirds in northwest Europe (excluding Norway and USSR), 29-321 p. In: J.P. Croxall; P.G.H. Evans & R.W. Scheiber (Eds). Status and conservation of world's seabirds. Cambridge, International Council for Bird Preservation.

[2] Furness, R.W. 1982. Competition between fisheries and seabird communities. Adv. Mar. Biol. 20:225-307.

[3] Furness, R.W.; A.V. Hudson & k. Ensor. 1988. Interactions between scavengig seabirds and commercial fisheries around the British Isles, p. 240-268. In: J. Burger (Ed.). Seabirds & other marine vertebrates: competition, predation and other interactions. New York, Columbia Univ. Press, 339p.

[4] Hudson, A.V. & R.W. Furness. 1989. The behaviour of seabirds foraging at fishing boats around Shetland. Ibis. 131:225-237.

[5] Rezende, M.A. 1987. Comportamento associativo de Fregata magnificens (Fregatidae, Aves) e Sula leucogaster (Sulidae, Aves) no litoral centro-norte do Estado de São Paulo. Bol. Inst. Oceanogr., São Paulo, 35(1):1-5.

[6] Sick, H. 1997. Ornitologia Brasileira. Rio de Janeiro, F.d. Nova Fronteira, 912p.

[7] Thompson, K..R. & M.D. Riddy. 1995. Utilization of affal and discards from "finfish" trawlers around the Falkland Islands by the black-browed albatross Diomedea melanophris. Ibis. 137:198-206.

[8] Wahl, T.R. & D. Heinemann. 1979. Seabirds and fishing vessels: co-ocorrence and attraction. Condor. 81:390-396.

[9] Walter, U. & P.H. Becker. 1994. The significance of discards from the brown shrimp fisheries for seabirds. Ophelia (Suppl. 6):253-262.