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Regulated Fishery Is Beneficial for the Sustainability of Fish Population in Lake Kinneret (Israel)

Open Journal of Ecology 2015年第10期5卷 513-527页

作者： Moshe Gophen Oren Sonin Menachem Lev Gregory Snovsky Migal-Scientific Research Institute Kiryat Shmone Israel The Fisheries Department Israeli Ministry of Agriculture and Rural Development Tiberias Israel Kibutz Ein-Gev Fishery Branch MP Jordan Valley Israel

Analysis of long-term data-sets of limnological and ichthyological features of the Lake Kinneret ecosystem structure revealed evidence that the decline of fish landings during 2007-2008 was not an unpredicted crisis and included only Tilapias, and mostly S. galilaeus. Several factors were found to be responsible for the decline and recovery afterwards: decline of stocking, enhancement of population size of food competitors (Bleaks), the use of smaller mesh size of fishing nets, increase of predation pressure by Cormorants, the burst of Viral Disease, natural cyclic oscillation of ENSO event and its higher frequencies and intensities during the 2000’s. Therefore, recommendations aimed at ceased fishing are not justified and fishery continuation is correct: renewal of Bleaks fishing effort, improvement of fishing legislations, enforcement and management of fish stocking, and efficient implementation of Cormorants deportation.

关键词： sarotherodon galilaeus Bleaks Fishery Crisis Cormorants Viral Disease Environmental Conditions

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Tilapia： From the Nile to the World

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Journal of Agricultural Science and Technology 2011年第2期5卷 251-255页

作者： Y. M. Abdelhadi Aquaculture Department Faculty of Agriculture University of Putra Malaysia UPM 43400 Serdang Selangor Malaysia The Central Laboratory for Aquaculture Research （CLAR） Abbassa 44662 Abou-Hammad Sharkia Egypt

This study addressed the potential oftilapia aquaculture as a major contributor to food production and poverty alleviation all over the world. To encompass this subject, tilapia history, origin, aquaculture potential, constraints, current and future production levels were reviewed. Tilapias are native to the River Nile and Africa in general then they were introduced and disseminated worldwide. Positive aquacultural characteristics of tilapia made tilapias the most cultured species worldwide now and in the near future. Tilapia world production is expected to reach 3 million tons this year 2010. Thus, tilapias could make a significant contribution to the livelihoods support especially in the tropical and subtropical countries.

关键词： Tilapia Oreochromis sarotherodon introduction production River Nile.

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