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Harnessing passive sampling and DNA extraction innovations for eDNA-based surveillance

A recent study explored new methods for marine surveillance using eDNA. The researchers compared traditional filtration methods with passive sampling and self-contained DNA extraction. Passive sampling using materials like artificial sponges and fishing nets showed similar results to active filtration in detecting fish diversity. The study suggests that passive sampling is a promising approach for eDNA monitoring and contribute to improving non-invasive monitoring techniques for marine environments.
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Training and operational resources for application of the LOF scale

On 20 June, around twenty biosecurity and technical diving specialists from around New Zealand attended a 1-day workshop in Manukau to discuss boat biofouling and the Level of Fouling (LOF) rank scale. The workshop addressed the range of approaches for vessel hull surveys in NZ and the design of operational and training resources for use of the LOF scale.
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Experimental insights on effective eDNA/eRNA capture from seawater samples

An experimental study was conducted to test different filter membranes for capturing eDNA/eRNA in the context of cost/time effort and cell fractions encountered in nature. For the first time a formal efficiency modelling was applied in eDNA and eRNA research to assist decision-making around an optimized sampling approach.
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