Mediterranean Mussel

Mediterranean mussel (Mytilus galloprovincialis)

My name is James Radloff and I am currently doing my MSc in Marine Biology at Rhodes University. I am working on one of the most alien invasive marine species along the South African coastline, the Mediterranean mussel - Mytilus galloprovincialis. The Mediterranean mussel has the characteristics of a successful invasive species, having a high tolerance to salinity and desiccation, fast growth rate, high reproductive output, they are better competitors than native mussel species and have relatively few predators. Because of these successful characteristics this species has been able to spread extensively along the coasts of South Africa. (more…)

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Proper identification of the Moonshine worm in the Knysna Estuary

Knysna moonshine worm

In the week of the 27th of February, I had the privilege of working in the Knysna Estuary and connecting with the people involved in the Knysna Basin Project. As part of my M.Sc degree I look at the proper identification of the Moonshine worm in the Knysna Estuary. On-going interviews with local fishermen and published data suggest that polychaete worms are increasingly being harvested and utilized as baiting species in the Knysna Estuary. It is, however, not known whether harvesting of polychaetes is sustainable or how the apparent increase in utilization by recreational and subsistence fishermen may affect stocks. These problems are compounded by widespread confusion over proper identification of some species. (more…)

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