Tolerance to salinities shocks of the invasive mussel Limnoperma fortunei under experimental conditions

Iheringia. Série Zoologia

Luciana G. Angonesi¹  Natália G. Da Rosa¹  Carlos E. Bemvenuti¹ 

[1] ,FURG Departamento de Oceanografia Laboratório de Ecologia de Invertebrados BentônicosRio Grande RS ,Brazil

关键词: Limnoperna fortunei;    golden mussel;    salinity shocks;    physiological tolerance;    invasion;    Limnoperna fortunei;    mexilhão-dourado;    choque de salinidade;    tolerância fisiológica;    invasão;   

DOI  :  10.1590/S0073-47212008000100009

来源: SciELO

【 摘 要 】

The golden mussel, Limnoperna fortunei (Dunker, 1857), has been found in the estuarine regions of South America, including the Patos Lagoon (Brazil), a huge choked lagoon with an estuarine region that is highly unstable chemically. Limnoperna fortunei space-temporal variability in the lagoon's estuarine region demonstrated the need to evaluate this species' ability to survive under salinity shocks. A set of experiments was conducted under controlled laboratory conditions. Specimens were tested under salinities of 2, 4, 6, 8 and 12 ppt, and were exposed for periods of 24, 48, 72, 96 and 240 hours. The mussel can survive (90%) up to a salinity shock of 2 ppt for periods of at least 10 days. Considering the influence of climatic and stochastic events and the chemical instability of the Patos Lagoon estuarine region, it's unlikely that populations could survive for longer periods (more than a year) in this area.

【 授权许可】

CC BY   
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