PROMOTING ACCESS TO AFRICAN RESEARCH

Nigerian Journal of Fisheries

The AJOL site is currently undergoing a major upgrade, and there will temporarily be some restrictions to the available functionality.
-- Users will not be able to register or log in during this period.
-- Full text (PDF) downloads of Open Access journal articles will be available as always.
-- Full text (PDF) downloads of subscription based journal articles will NOT be available
We apologise for any inconvenience caused. Please check back soon, as we will revert to usual policy as soon as possible.





DOWNLOAD FULL TEXT Open Access  DOWNLOAD FULL TEXT Subscription or Fee Access

Stock assessment and management implications of inland fishery in the floodplain of the Cross River, Nigeria

BO Offem, Y Akegbejo-Samsons, IT Omoniyi

Abstract


Fishery assessment was conducted monthly between January, 2004 and December, 2006 in 3 zones of inland wetlands of Cross River, Nigeria. Zone I was upper Cross River (savanna wetlands), Zone II: middle Cross River (savanna/forest wetlands) and Zone III was the lower Cross River (forest wetlands)]. Forty six fish species belonging to 28 genera and 16 families were observed. These included; Bagridae (25.7%), Cichlidae (16.9%), Clariidae (11.5%) Clupeidae (10.2%), Mochokidae (8.7%), Mormyridae (5.8%), Cyprinidae (2.9%), Osteoglossidae (2.8%), Protopteridae (2.6%), Denticeptidae (2.4%), Hepsetidae (2.4%), Distichodontidae (2.3%), Malapteruridae (2.2%), Polypteriidae (2.2%), Schilbeidae (2.0%) and Characidae (2.0%). 2768 artisanal fishermen consisting of 500 (Zone I), 887 (Zone II) and 1381 (Zone III) were enumerated. Four hundred and seventeen were found to be full-time fishermen, 893 part-time, 969 shoreline and 489 assistants. Common gears were hook and line constituting 30%, cast net (20.1%) bailing method (15%), gill nets (13.3%), seine net (11%) Traps (10.5%), lift net (6.7%) Dip nets (5%), poisoning (4.8%), cutlass (3.3%) and spear (1%). Four hundred and forty two operational boats were encountered. Significant differences were observed in the percentage of operational boats between the three zones (F = 5.67; P< 0.05) (Zone I: 19%, Zone II: 31% and Zone III: 50%) and the average catch per boat in the different zones (F = 7.84; P < 0.05) (Zone I: 31.9kg, Zone II: 64.8kg and Zone III: 106.3kg), with highest production occurring in Zone III and lowest in Zone I. Estimated catch per annum was 14,670MT. The study shows that there was no sustainable management practice in place. There were high incidences of bad fishing methods. Community based management system that establishes participatory involvement of fishermen in the conservation and rational exploitation of fisheries resources was therefore recommended.

Full Text:


No subscription journal articles available during site upgrade.



http://dx.doi.org/10.4314/njf.v5i2.46844
AJOL African Journals Online