Influence of bacteriological contamination on the resilience of mussels Perna perna (Linnaeus, 1758) to air exposure

Authors

  • Marcelo Barbosa Henriques Zootecnista, Mestre, Assistente Técnico de Pesquisa – Instituto de Pesca – SAA-SP; Professor Titular UNIMONTE e UNIMES, Santos, São Paulo.
  • Hélcio Luis de Almeida Marques Engenheiro Agrônomo, Doutor, Pesquisador Científico do Instituto de Pesca – SAA - SP.
  • Julio Vicente Lombardi Biólogo, Doutor, Pesquisador Científico do Instituto de Pesca – SAA - SP
  • Orlando Martins Pereira Biólogo, Pesquisador Científico do Instituto de Pesca – SAA - SP.
  • Ana Luiza Brossi Garcia Bióloga, Doutora, Professora do Departamento de Zoologia, UNESP, Rio Claro

DOI:

https://doi.org/10.32360/acmar.v36i1-2.6603

Keywords:

bivalve mollusks, Perna perna mussel, bacteriological contamination, air exposure.

Abstract

Most bivalves commercialized in Brazil are still harvested from fisheries activities. The chemical and bacteriological contamination of the sea environment, besides leading to lethal effects in bivalves, can harm their resistance to withstand environmental factors. This paper aimed at determining the influence of bacteriological contamination to air exposure resistance of mussels Perna perna. Results provide a contribution to a better knowledge about the biology of Perna perna, suggesting improved handling practices either for animals in natural beds under commercial farming. The study was developed in Urubuqueçaba Island, a bacteriologically polluted site, and in Guaraú Beach, a site free of bacterial contamination. To determine air exposure resistance, trials were conducted under two different temperatures, in December 2000 and in June 2001. TM 50 was determined, as well as the number of dead animals in each trial after exposure time. Results indicate that bacteriological contamination probably affects the resistance of Perna perna to air exposure. Mussels from Urubuqueçaba presented smaller resistance to air exposure than mussels from Guaraú.

Published

2017-03-10

Issue

Section

Artigos originais