caa a22 4500 477096778 CHVBK 20180405111529.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF01997139 doi (NATIONALLICENCE)springer-10.1007/BF01997139 Khalil Magdy Zoology Department, Faculty of Science, Ain-Shams University, Cairo, Egypt aut Changes in the mullet fishery of Lake Manzala, Egypt [Elektronische Daten] [Magdy Khalil] Growth rates of the main mullet species (Liza ramada andMugil cephalus) in Lake Manzala are low compared to those in other Egyptian lakes. But average growth rates during the period 1989-1993 were relatively faster than in the 1960's. Spawning and migration seasons have been determined for every species, and their distribution in the lake, in terms of certain ecological parameters (salinity, turbidity and dissolved oxygen) have been investigated. Changes in the mullet fishery in the lake during the past 70 years have been studied. Due to an increase in nutrient loading and a decrease in salinity, mullet declined from 65 per cent of the total catch during the 1920's to only 2.2 per cent during the early 1980's. As a result of fisheries management and development programmes from 1989 to 1993, mullet production increased to 9.2 per cent of the total catch. Kluwer Academic Publishers, 1997 growth rate nationallicence Lake Manzala nationallicence management nationallicence mullet fishery nationallicence International Journal of Salt Lake Research Kluwer Academic Publishers 5/3(1996-09-01), 241-251 1037-0544 5:3<241 1996 5 10770 https://doi.org/10.1007/BF01997139 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01997139 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Khalil Magdy Zoology Department, Faculty of Science, Ain-Shams University, Cairo, Egypt aut NATIONALLICENCE 773 0- International Journal of Salt Lake Research Kluwer Academic Publishers 5/3(1996-09-01), 241-251 1037-0544 5:3<241 1996 5 10770 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer