Tilapia Stock Suppression by the Great Cormorant (Phalacrocorax carbo) in Lake Kinneret, Israel

Author: Gophen Moshe

ABSTRACT
The Great Cormorant (Phalcrocorax carbo sinensis) is a well-known fish predator and migratory bird. The bird is a wintering visitor in Israel from the end of October through March. During 1950-1990, the Cormorant used to stay mostly in northern Israel, in the Hula Valley, preying on fish in Lake Kinneret as well as fishponds and adjacent reservoirs. Flocks of Cormorants were deported from northern Israel to eastern and central country regions, causing severe damage to aquaculture. A second operative deportation was carried out and the birds migrated to Lake Kinneret. A survey of their feeding habits was done by The National Nature and Parks Conservation Authority. The outcome information was compiled with international data and assembled towards a conclusive summary of potential causative damage to Lake Kinneret Fishery and Ecosystem structure. Consequences are described and recommendations made.

Source:

Journal: Open Journal of Modern Hydrology
DOI: 10.4236/ojmh.2017.72009 (PDF)
Paper Id: 75563 (metadata)

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