The Pacific oyster Crassostrea gigas (Thunberg, 1793) in the Buenos Aires Province. Natural recruitments in the Samborombón Bay

Authors

  • Diego Giberto Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • Claudia Bremec Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • Laura Schejter Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • Mariana Escolar Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • Valeria Souto Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • Agustín Schiariti Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • Virginia Romero Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • Éder dos Santos Instituto Argentino de Oceanografía (IADO) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

Keywords:

Benthos, , invasive species, oysters, diversity, macrofaunal, aquaculture

Abstract

The pacific oyster Crassostrea gigas, one of the most successful invasive species worldwide, inhabits intertidal and shallow subtidal marine and mixohaline coastal waters. In Argentina the species colonized natural ecosystems of southern Buenos Aires and northern Patagonia. However, in the last years the presence of oysters in the coast of Punta Rasa, northern Buenos Aires, was reported. Therefore, with the aim of recognizing the identity of the species, an exploratory survey in the salt marshes close to San Clemente stream was carried out. Individuals were identified as C. gigas (shell height up to 37 mm, density up to ~390 ind. m-2). Oysters were found clumped in small reefs in muddy substrates mixed with shell debris, attached to the stems of Spartina alterniflora, plastic bags, wooden sticks or other mollusks shells. The origin of the oyster banks could be linked to the establishment of C. gigas experimental farms in Las Toninas (20 km away from the study area) in the late 90’s. Basic research on the species and its potential impact on local ecosystems should be undertaken in the short term.

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Published

2012-12-31

How to Cite

1.
Giberto D, Bremec C, Schejter L, Escolar M, Souto V, Schiariti A, Romero V, dos Santos Éder. The Pacific oyster Crassostrea gigas (Thunberg, 1793) in the Buenos Aires Province. Natural recruitments in the Samborombón Bay. Mar Fish Sci [Internet]. 2012Dec.31 [cited 2021Apr.15];21:21-30. Available from: https://ojs.inidep.edu.ar/index.php/mafis/article/view/109

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