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Diversity and Abundance of Benthic Macro Invertebrate at Middle Reaches of Orashi River, Niger Delta Ngodigha, Sabina Alatari; Hanson, Uyi; Suanu, Deekae, Nanee
International Journal of Global Sustainable Research Vol. 2 No. 8 (2024): August 2024
Publisher : MultiTech Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59890/ijgsr.v2i8.2870

Abstract

Benthic macro-invertebrates are important in any aquatic ecosystem as they serve as bio-indicator of pollution and provide nutrient through their activities.  The study was conducted for a period of 12 months from October 2018 to September 2019 along the middle reaches of the Orashi River to investigate the diversity and abundance of Benthic Macroinvertebrate. Samples were collected from each of the sampling stations using Ekman grab. A total of 40,826 benthic macro invertebrates were recorded of three taxa and fourteen species. Highest total number of individuals of 10,644 was in December while the lowest was in September. Species diversity estimated was higher in July and at station 2
Effects of Eichhornia Crassipes Infested Pond on Growth of Clarias Gariepinus (Burchell 1822) in Concrete Ponds Ngodigha, Sabina Alatari
International Journal of Contemporary Sciences (IJCS) Vol. 1 No. 10 (2024): August 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijcs.v1i10.11592

Abstract

Concrete tanks measuring 3.0 m x 2.0 m x 1.2 m were stocked with African catfish and infested with water hyacinth at 0%, 10%, 20%, and 30% plant cover to evaluate the effect of water hyacinth on fish growth. The stocking density was 5 fish/m², with an average weight of 10.3 g and an average total length of 10.4 cm. The study lasted 60 days, during which the fish were fed twice daily for six days a week. Weekly, random samples were taken from each tank to measure body weight and length, and water quality parameters were also analyzed. The results indicated that all water quality parameters remained within acceptable limits. However, the final average weight of fish was lower in the control and at 30% plant cover. The study concludes that African catfish grow better in ponds moderately infested with water hyacinth.