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The testing of alternative mitigation methods for the depredation prevention on Tursiops Truncatus at an open sea fish farm in the Mediterranean Sea

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The testing of alternative mitigation methods for the depredation prevention on Tursiops Truncatus at an open sea fish farm in the Mediterranean Sea

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Samenvatting

Marine mammals, such as Bottlenose dolphins (Tursiops truncatus), depredate on pelagic fish farms and cause damage to the nets, fish and the environment. Since the Marine Mammal Protection Act (MMPA) in 1972, the depredation mitigation methods have been limited. The research project focuses on the testing of alternative mitigation methods on an open sea based fish farm in the Mediterranean Sea at the Island of Rhodes, Greece. During three months, 200 hours of observation at the surface and under water on the dolphins appearance and behavior were made. The preference of those T. truncatus remained on the depredation of deceased sea bass in the mortality nets on cages located on the outside. The hunting behavior of the T. truncatus group was observed to be unique. Three methods were tested to prevent the dolphins from depredation. The analysis showed that the optimal mitigation method was the conical frustum. It is questionable, whether the mitigation methods can be used sustainable and on a long term period.

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OrganisatieHZ University of Applied Sciences
OpleidingWatermanagement/ Aquatische Ecotechnologie
InstituutDelta Academy
PartnersNIMOS S.A.
Gepubliceerd in
Datum2015-06-26
TypeBachelorscriptie
TaalEngels

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