A comparative study of byssogenesis on zebra and quagga mussels: the effects of water temperature, salinity and light-dark cycle

作者：Grutters Bart M C; Verhofstad Michiel J J M; van der Velde Gerard^*; Rajagopal Sanjeevi; Leuven Rob S E W

来源：Biofouling, 2012, 28(2): 121-129.

DOI：10.1080/08927014.2012.654779

• Dreissena rostriformis bugensis
• Dreissena polymorpha
• byssal thread production
• re-attachment
• biofouling
• light period
• salinity
• water temperature

The quagga mussel (Dreissena rostriformis bugensis) and zebra mussel (Dreissena polymorpha) are invasive freshwater bivalves in Europe and North America. The distribution range of both Dreissena species is still expanding and both species cause major biofouling and ecological effects, in particular when they invade new areas. In order to assess the effect of temperature, salinity and light on the initial byssogenesis of both species, 24 h re-attachment experiments in standing water were conducted. At a water temperature of 25 degrees C and a salinity of 0.2 psu, the rate of byssogenesis of D. polymorpha was significantly higher than that of D. rostriformis bugensis. In addition, byssal thread production by the latter levelled out between 15 degrees C and 25 degrees C. The rate of byssogenesis at temperatures %26lt;25 degrees C was similar for both species. Neither species produced any byssal threads at salinities of 4 psu or higher. At a salinity of 1 psu and a water temperature of 15 degrees C, D. polymorpha produced significantly more byssal threads than D. rostriformis bugensis. There was no significant effect of the length of illumination on the byssogenesis of either species. Overall, D. polymorpha produced slightly more byssal threads than D. rostriformis bugensis at almost all experimental conditions in 24 h re-attachment experiments, but both species had essentially similar initial reattachment abilities. The data imply that D. rostriformis bugensis causes biofouling problems identical to those of D. polymorpha.

• 出版日期2012