The effect of low salinity on teredinids

Brazilian Archives of Biology and Technology

Cristine C. Barreto¹  Andrea O. R. Junqueira¹  Sérgio Henrique G. Da Silva¹ 

[1] ,Universidade Federal do Rio de Janeiro Departamento de ZoologiaRJ ,Brazil

关键词: Aquaria;    critical salinity;    teredinidae;    Rio de Janeiro;    wood-borers;   

DOI  :  10.1590/S1516-89132000000400008

来源: SciELO

【 摘 要 】

Teredinids survival in low salinities was determined in aquaria. Panels previously immersed in Ponta de Leste, Ilha Grande Bay, Rio de Janeiro, were transferred to aquaria with salinities ranging from 5.0 to 15.0 Practical Salinity Unities (PSU). The waters of Ilha Grande Bay receive a large amount of wood from the marginal rainforest vegetation, being suitable for the development of teredinids. The coastal areas of the bay are subjected to wide salinity fluctuations due to strong and sudden tropical storms. Eleven different species of teredinids were found in the panels. The critical salinity concentration for the survival of the two most common species was 11.93 PSU for Lyrodus floridanus and 12.90 PSU for Teredo furcifera. The effect of time on the mortality of teredinids at low salinities is also discussed.

【 授权许可】

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