Artisanal fisheries characteristics of the fresh water reaches of lower Nun River, Niger Delta, Nigeria.

Abstract

ABSTRACT:A frame survey of fishing communities was carried out, employing the complete census technique, to assess the artisanal fisheries characteristics of the fresh water reaches of lower nun river for a period of two year, Eleven Community lie along the stretch of the study area. The total number of 4718 fishers with 1645 canoe units employing various fishing gear resulted to a fishers density of 3 fishers per canoe unit. A total of 29 fin fish families were recorded. Seasonally occurring fresh water crustacean. Attaya gaboneensis and palacemon paucidens were present. Etheria elliptica, an oyster was also present. A specie of fresh water clam, Galacea Paradoxa from the family Donacidae was present. Trichechus senegelensis (Manattee) was occasionally captured by local hunter during the flood period. Hippopotamus amphibious (Hippopotamus) was reported from isolated places but they were rare. A specie of Otta, Lutra macullicolis was present. Three species of crocodiles, Crococdylus niloticus Crocodylus cataphractus (Alligator) and Osteolaemus tetraspsis were also present. The Nile monitor, Veramus niloticus and the aquatic snake, Anoscopus sp. And three species of water turtle, Kimxy erosa, Pelumedusa sp and Peliosus sp were also present. The commonest fishing method employed was local fishponds (50.8%) and the least was gill nets (1.6%). Drift net caught the highest fish (8.01kg) per gear, while local fishponds was the least 0.25 kg. The annual catch per canoe was recorded for local fishponds (167. 84kg), while the lowest was assorted traps (14.7kg). Drift not recorded the highest annual for local fishponds. The mean biomass of 25.04 of fish catch of 20.2kg per fisher and the lowest value (4.53kg) was recorded per boat, total catch of 37903. 6kg, annual producing estimate of 434.81 tonnes, standing struck of 2.27 km -2 and of twenty two million, seven hundred and forty two thousand one hundred and sixty naira (N22742160) was estimated. The reduced annual income per fisher in the study was four thousand, eight hundred and twenty naira, thirty kobo. There is therefore the, urgent need for effective management of the Nun river fisheries, to improve on the living standard of the people. @JASEM

Impact of Dredging on the Sediment Quality of Igbedi Creek, Upper Nun River in Central Niger Delta, Nigeria

“…1 and 6 0 17 1 E. The stretch of the river is a long and wide meander whose outer concave bank is relatively shallow with sandy point bars (Abowei, 2000). The depth and width of the river vary slightly at different points (Sikoki et.…”

“…Both communities are located along the Nun River and are both predominantly fishing communities. For the purpose of this study, the selected dredged and non-dredged sites were divided into stations: Ogobiri -OGO 1 …”

Population dynamics of freshwater oysterEtheria elliptica(Bivalvia: Etheriidae) in the Pendjari River (Benin-Western Africa)

“…The bivalve is of great economic importance for the local people and has been exploited in many artisanal fisheries across Africa for food and income over the years (Ampofo-yeboah et al, 2009;Van Damme, 2011;Ikpi and Offem, 2012). In West Africa, oyster exploitation was reported in many fisheries in Nigeria (Abowei and Hart, 2008;Ikpi and Offem, 2012), in the Volta River in Ghana (Ampofo-yeboah et al, 2009) and in the Pendjari River in Benin (Kiansi, 2011). Surprisingly, no data were reported on the population dynamics of the species probably facing heavy exploitation owing to steadily increasing fishing pressure (Heck et al, 2007).…”

Factors that Influence Attitude of Artisanal Fishers towards Conservation Measures in Ekperiama (Ekperikiri), Niger Delta

“…Apart from being cheap source of highly nutritive protein, it also contains other essential nutrients required by the body. The fisheries sub-sector is also a high foreign exchange earner generating about 20 million dollars annually through the export of shrimps alone and providing direct and secondary employment to more than one million Nigerians (Abowei and Hart, 2008).…”

“…This clearly indicates that the demand for fish exceeds supply. Fisheries in most coastal and estuarine ecosystem are either fully exploited (Abowei and Hart, 2008) or over exploited (Ajana,2003;Waribugo, 2005) due to development of more fishing gear ( Waribugo,2005;Ngodigha, et. al.,2011Ngodigha, et.…”