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  • 1
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    Influence of number of valves on catch composition of a fishing pot trap (Lege) in River Rima, north western Nigeria (2021)
    In:  http://aquaticcommons.org/id/eprint/4117 | 424 | 2011-09-29 16:33:01 | 4117 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-29
    Description: Three types of prototype (Lege) traps with different numbers of entrance valves were evaluated in River Rima, north western Nigeria. The traps contained 4,6 and 8 valves, tagged 4-V, 6-V and 8-V respectively. The experiment was carried out in a randomized complete block design with one factor each replicated three times. Data collected on fish diversity, number, biomass and sizes were subjected to descriptive statistics and analysis of variance. The results of the catch composition showed close diversity index of 0.86 for 6-V, 0.80 for 8-V and 0.60 for 4-V Lege traps. However, the number (41%) and biomass (48%) of fish caught in the 6-V Lege trap were significantly (P〈0.05) higher than those caught in the other traps. There was no definite trend in the sizes (length and girth) of fish caught in the traps. On the basis of species diversity, and the number and biomass of fish caught, the 6-V Lege showed preference for adoption than the other two traps. However, further studies are recommended on the appropriate mesh size net for the trap in line with the provisions of fisheries edicts
    Keywords: Fisheries ; Biology ; Nigeria ; River Rima ; catch composition ; fishing gear ; gear construction
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 802-808
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  • 2
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    Relationship between the rainfall, water levels, flooding and fish supply from Asa Dam (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23247 | 19325 | 2018-03-25 12:49:34 | 23247 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Studies on the relationship between the rainfall, water levels and floods in Asa Dam Ilorin, Kwara State Nigeria was carried out for twelve months to determine the impact of these parameters on the supply of fish species from this dam to Ilorin and environ. Maximum rainfall (26.14 cm) was in September. The range values of rainfall recorded during this research was zero (November / February) to 26.14 cm (September). Water levels were lowest in April (11.40 m) and highest in September (12.80 cm). Increased water levels commenced from May (11.90 m) to October (12.60 m). The flooding of the dam began as from August when the dam spillway began to overflow. Assessment of fish catch from six fishermen around the lake showed significant increase in the fish supply at the dry season when water levels were low than the wet season (P 〈 0.05). Rainfall and water levels were negatively correlated.
    Description: Includes:- 1 table.;1 fig.;14 refs.
    Keywords: Environment ; Fisheries ; Nigeria ; Asa L. ; freshwater environment ; Rainfall ; Water levels ; Flooding ; Fish catch statistics
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 236 - 239
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  • 3
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    Harnessing the fishery potential of man-made lakes for the partial commercialisation of Niger River Basin Development Authority, Minna, Nigeria (2021)
    In:  http://aquaticcommons.org/id/eprint/3516 | 424 | 2011-09-29 17:16:39 | 3516 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-27
    Description: Niger River Basin Development Authority Minna (NRBDA) is one of the eleven river basins in Nigeria now undergoing transition towards partial commercialisation. In the light of this the need to be self-sustaining through exploration and exploitation of every possible areas along their operation to yield revenue cannot be over-emphasized. Therefore it is most pertinent to consider fisheries activities along their water bodies as one of the major sources of revenue by organising the local fishermen operating along the water into cooperative bodies and made to pay for fishing rights. Strategies to accomplish this objective is highlighted. The need to embark on aquaculture projects by construction of fish ponds at suitable sites along the reservoirs and developing the recreational potentials of their water bodies as sources of revenue is also stressed
    Keywords: Fisheries ; Aquaculture ; Nigeria ; aquaculture development ; fish culture ; fishery development ; inland fisheries
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 202-206
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  • 4
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    The head-body weight and head-body length relationship of Synodontis schall (Bloch and Schneider 1801) in Asa Lake, Ilorin, Nigeria (2021)
    In:  http://aquaticcommons.org/id/eprint/4040 | 424 | 2011-09-29 16:27:12 | 4040 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-28
    Description: A total of 710 specimens of Synodontis schall were analyzed for the head body weight and head body length relationship. The head constituted 40% of the total body weight and 30% of the total body length. The mean head weight for male and female computed was 23.90g and 29.13g respectively. Head weight in both male and female was significantly different (P〈0.01) while the head length for the combined sexes showed no significant difference (P〉0.05). Fat accumulation in the body tissue was prominent in the females than males usually before the breeding season. The significance of the cephalo-nuchal shield in the bony head of Synodontis species compared with some other catfishes in the lake was also discussed
    Keywords: Fisheries ; Biology ; Nigeria ; Lake Asa ; body regions ; body weight ; head ; length-weight relationships ; Synodontis schall
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 288-292
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