Water Quality and Catch Per Unit Effort (CPUE) of Fish Species in Zobe Reservoir, Dutsin-Ma, Nigeria

Abstract

A twelve month study was carried out between March 2020 and February 2021, to assess water quality parameters and fishermen catch per unit effort of Zobe reservoir in Katsina State, Nigeria with the aim of understanding the contamination position of water body and fishing effort. Five chosen sampling stations are; Raddawa, Tabobi, Gada, Garhi, and Makera. Selected physicochemical parameters such as temperature, pH, NH3, turbidity, alkalinity, BOD and alkalinity were assessed using standard methods. However, they were within all the recommended level for optimum performance of tropical fish species. Individual fishermen catch was used throughout the study period, where each of the five (5) Landing sites was visited twice monthly for catch assessment survey. Fish samples were randomly collected from 5 canoes/fishermen per sampling unit and catches were observed and recorded. There was high catch in the month of July and August (wet season) for all the species in Zobe reservoir. In contrary, there was strong negative correlation between temperature and DO; pH and DO; turbidity and DO; DO and BOD; DO and alkalinity. Makera had higher catches than any of the other stations with more than 700 bi-weekly catch representations between the months of July and August, 2020. Dry season CPUE was up to 22% for wet season and 9.80% for Clarias gariepinus in Garhi fishing station which recorded the highest, whilst for Clarias anguilaris CPUE recorded absolute zeros for all the stations and for both seasons except for Makera in wet season with 0.08% CPUE. Physicochemical parameters of Zobe reservoir showed that the water quality of Zobe reservoir changes with season, however, the parameters were within an acceptable range for fish growth and dependency of fish catch and water quality was observed.

Water Quality, Zooplankton Community and their Interaction in FUDMA Earthen Production Fish Pond

“…The observed outcome in the current study may be explained by the dilution effect influenced by the physical characteristics of the study area. This phenomenon is particularly associated with areas exhibiting increased photosynthetic activities and reduced turbidity, resulting in elevated oxygen levels within the artificial lake, as discussed by Nababa et al 2 .…”

“…A satisfactory aquatic situation is amongst the needs for the sustained survival then growth of fish in addition to other water animals from the period the entire lifespan process of the fishes is completely dependent on the fineness of aquatic in addition to it is environs. The physicochemical water quality parameters (physical, chemical and biological parameters) of the aquatic environment must be satisfactory for fish healthiness in addition to continuing existence 2 . Physicochemical factors are physical, chemical and biological features of the water body, regularly in admiration to it is suitability for a designated use 2 .…”

“…The physicochemical water quality parameters (physical, chemical and biological parameters) of the aquatic environment must be satisfactory for fish healthiness in addition to continuing existence 2 . Physicochemical factors are physical, chemical and biological features of the water body, regularly in admiration to it is suitability for a designated use 2 . Aquatic water bodies have remained over the years used up for game, home water sources, angling events, dry season farming or commerce.…”

“…These designated uses have dissimilar welldefined biological, chemical and physical morals required for their repairs. Subsequently, aquatic water excellence is essential to the fitness and safety of whichever environment, which is governing of the biological, chemical and physical qualities of the aquatic water body 2 . Aquatic water body establishes a portion of the dynamic water life expectancy supportive system in which inorganic and organic elements are liquefied or suspended then in which a widespread diversity of animals lives in addition to relate with each other 3 .…”

Physicochemical Parameters and Fish Catches of Zobe Reservoir in Katsina State, Nigeria

“…The southern part of the reservoir is bounded by many villages that include; Marke, Makera, and Tsakko, by the south-east, are Tuga, and Kuka-Damisa, whilst by the north are Garfi, Badole, Daguda, Katsalle, and Tabobi remotes. The reservoir covers 4500 hectares of land and during the rainy season stores 177 million cubic meters of water which is released downstream for irrigation and town water supplies (Nababa et al, 2019& SRBDA, 1981. The reservoir was created for local irrigation of 8,000 hectares, power generation, and water supply.…”