Publication Date:
2021-07-14
Description:
Design characteristics and mode of operation of purse seining off Orimedu fish Port was investigated between August 2007 and February 2008.Tha fish catch composition was also analysed. The purse seine net has the highest number of bundles. The mesh size ranges from 2.5 to 05.0cm.The purse seine net was highly selective fish target specific, catching mostly coastal pelagic fish species. Ten fish species belonging to 5 families were frequently encountered. Total weight of the fish landed was 444.50kg while the average weight of the catch landed per canoe was 30.53kg respectively. Ethmalosa fimbriata (Bonga fish) and Sardinella maderensis (flat sardines) dominated the catch with 2l1.00kg (45.40%) and 143.00(32.10%) by weight of the total catch. Chloroscombrus chrysurus (Atlantic bumper fish), Caranx hippo (Crevail jack), Sphyma couardi (hammer head shark) and Carcharhinus spp.(shark) contributed between 0.33-3.47% ofthe total fish landed by weight. Total length of the fish landed also indicated that the purse seine was highly selective and does not deplete the population of sub-adult's juvenile fish species. Salinity was found to be the most variable factor affecting abundance and subsequent catch of coastal pelagic fishes particularly Ethmalosa fimbriata during the dry season. This study revealed that over fishing of fish stocks may be avoided provided the same fishing pressure observed during this study period is maintained in terms of the number of fishing crafts, number of boat days or fishing and mesh-size of the purse seine fishing gear used.
Description:
Includes:- 4 tables.;7 refs.
Keywords:
Fisheries
;
Nigeria
;
Orimedu Fish Port
;
marine environment
;
Catch statistics
;
Check lists
;
Species diversity
;
Gear construction
;
Gear research
Repository Name:
AquaDocs
Type:
conference_item
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
125-129
