The reproduction of Oreochromis niloticus (Linnaeus) in Opa reservoir, Ile-Ife, Nigeria

Oreochromis niloticus is one of the commercial fish species in Opa reservoir. It bred throughout the period of study in the reservoir. The fish species is a maternal mouth brooder with the female specimens carrying eggs and alevins in their mouths. The sex ratio of O. niloticus was 1:1 and the maximum fecundity recorded was 1810 eggs. The fecundity increased as the fish length increased. The relatively high fecundity of the fish species in the reservoir is an indication of the suitability of the small reservoir in contributing to fish production

The genesis and achievement of a limnologist: George Evelyn Hutchinson, 1903-1991

An obituary of the limnologist G.E. Hutchinson is given.

South & West Cumberland Fisheries Advisory Committee 13th October, 1975.

This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 13th October 1975. The report contains information on the impact of work on the A66 Penrith to Workington road, brown trout fishing, the development of the Ehen as a fishery, reports of fisheries activities, Holmwrangle hatchery, land drainage representation, new fishery byelaws and fishing licence duties. The section on fisheries activities includes runs of fish, stocking, poaching and biological work. The section on Holmwrangle hatchery includes mortality numbers and possible solutions to avoid future pipe chokes and to improve the pumping system. The section on land drainage is purely for an up-to-date picture of developments. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Eden & District Fisheries Advisory Committee 13th January, 1976.

This is the report from the Eden and District Fisheries Advisory Committee meeting, which was held on the 13th January 1976. The report contains information on the land drainage representation on local committees, fisheries activities report, salmon stocking on the River Eden, status of Haweswater and Castle Carrock Reservoir, fisheries byelaws, licensing provisions for the River Esk and progress made in implementing the recommendations contained in the 'Taking Stock' publication. The section on fisheries activities reported by area fisheries officers looks at fishing, spawning disease and poaching of migratory fish and coarse fishing. It also contains description of ova obtained at Holmwrange hatchery and provisions of new equipment, biological work carried on Eden and Blackrack Beck and suggestions for new fish counters and traps. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South & West Cumberland Fisheries Advisory Committee 13th January, 1975

This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 13th January, 1975. It covers information on the proposed regional fishing licence duties, the report of the Working Party on future regional hatchery requirements, and the Unit Fisheries Officer's report on fisheries activities. This section includes biological work undertaken on Chapel House Reservoir, information on the fishing of migratory fish, trout and coarse fish, hatchery work and prosecutions. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Regional Fisheries Advisory Committee 13th July, 1978

This is the report from the Regional Fisheries Advisory Committee meeting, which was held on the 13th July 1978. The report contains the minutes of the last meetings of the Local Fisheries Advisory Committees, information on the future programme of fisheries work, and an update on the fisheries dispute on the Solway Firth and the draft netting rights on the River Eden. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Regional Fisheries Advisory Committee 13th November, 1978

This is the report from the Regional Fisheries Advisory Committee meeting, which was held on the 13th November 1978. The report contains the minutes of the previous meetings of the Local Fisheries Advisory Committees, information on income and expenditure, and salmon propagation in England and Wales. Also included is the dimensions of keep nets, and the water resource development. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Lune, Wyre & Furness Fisheries Advisory Committee 13th December, 1979.

This is the report from the Lune, Wyre and Furness Fisheries Advisory Committee meeting, which was held on the 13th December 1979. The report contains the minutes of the last meeting along with the minutes of the Regional Fisheries Advisory Committee held on 12th November 1979. It also includes net limitation order and fisheries byelaws for the River Lune and River Wyre. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 13th December, 1979.

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 13th December 1979. The report contains the minutes of the last meeting and the Regional Fisheries Advisory Committee meeting held on 12th November 1979. This last section looks at the future of Stocks Reservoirs and it includes Appendixes with estimated capital costs, estimated annual revenue, expenditure and income, a letter from the Director of Resource Planning and a map showing Stocks Reservoir Nature Reserve recommended by LNT. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Regional Fisheries Advisory Committee 13th July, 1981

This is the report from the Regional Fisheries Advisory Committee meeting, which was held on the 13th July 1981. The report includes the minutes of a special meeting of the Northen Area Fisheries Advisory Committee held on the 16th June 1981, the review of the Regional Committee Structure and Membership, draft net licences on the River Derwent and Ellen and fishing licence duties for 1982. It also covers the restructuring of rod and line licences duties, the appointment of agencies for the sale of Fishing Licences, and a review of fishery byelaws. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Central Area Fisheries Advisory Committee 13th October, 1982

This is the report from the Central Area Fisheries Advisory Committee meeting, which was held on the 13th October, 1982. The report contains sections on Rod and Line Fishing Licences Format, Salmon and Freshwater Fisheries Act 1975 for River Lune, a proposed Pike Ranching Scheme on Esthwaite Water and Fisheries Activities. The section on fisheries activities is reported by the area fisheries officer and includes river conditions and fishing, migratory movement, hatcheries, (Middleton, Dalton in Furness, Langcliffe), stocking, poaching and management works. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

The first quarter survey of the aquatic system and fisheries of the upper Victoria Nile, 6th -13th April 2006

The purpose of this present study therefore is to provide and update the AES Nile Power EIA baseline information on the ecology of the river ecosystem prior to the construction of the dam. The study is intended to provide a basis for evaluating the impact of the project on the river environment, the biological resources associated with it and fisheries socia-economics and the vector/sanitation status. This report presents the findings of the first sampling regime which was conducted between the dates of 6th-13th April 2006 and compared with the AESNP Environmental Impact Assessment findings of the second quarter carried out during 5th-14th April 2000.