Managing invasive Styela clava populations: inhibiting larval recruitment with medetomidine
In: Aquatic Invasions. Regional Euro-Asian Biological Invasions Centre (REABIC): Helsinki. ISSN 1798-6540; e-ISSN 1818-5487, more
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| Keywords |
Biofouling
Biological phenomena > Metamorphosis
Control > Population control
Properties > Biological properties > Toxicity
Styela Fleming, 1822 [WoRMS]; Styela clava Herdman, 1881 [WoRMS]; Tunicata [WoRMS]
Marine/Coastal |
| Author keywords |
Steyla clava; Selektope; tunicate |
| Abstract |
The toxicity of the synthetic catemine medetomidine to <12 h-old larval clubbed tunicate, Styela clava, was assessed in 2-h laboratory bioassays. Exposure to medetomidine resulted in increasing rates of larval immobility with increasing concentration. The 2-h EC50 was 3.8 mg/L medetomidine. Larval settlement was highest at a concentration of 0.1 mg/L medetomidine. At higher concentrations of medetomidine, metamorphosis was initiated but not all larvae settled. The ability of medetomidine to reduce S. clava larval mobility and interfere with settlement suggests that it has potential as a management tool for controlling subtidal invasive S. clava populations. |
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