Fungal Diversity In Water And Mangrove Oyster (Crassostrea Gasar ), Woji/Trans-Amadi Creek, Port Harcourt, Nigeria
- April 17, 2021
- Posted by: RSIS
- Categories: Botany and Microbiology, IJRIAS
International Journal of Research and Innovation in Applied Science (IJRIAS) | Volume VI, Issue II February 2021|ISSN 2454-6194
Otene, B.B., Ejiko, E.O And Deekae, S.N.
River State University, Nigeria
Abstract: The fungal diversity in water and mangrove oyster (Crassostrea gasar ),Woji/Trans-Amadi Creek, Port Harcourt, Nigeria was studied for six months between January and June,2017 covering both dry and wet seasons. Water and mangrove oysters (Crassostrea gasar) samples were collected from three stations and analyzed for bacteria using standard method. The data obtained were subjected to SPSS software version 20 for descriptive and inferential statistics using one-way analysis of variance and Duncan multiple range test. It was observed that a total of the 8 species of fungi, Aspergillus niger, Aspergillus fumigatus, Penicillium species, Fusarium sp, Physanium cinerium, Candida sp, Aspergillus vasicular, and Pennisetum cemenberti with different frequencies were isolated from the isolates. The diversity indices ( Margalef, Menhinick, Shannon diversity, Shannon Wiener, Eveness/ Equitability and Simpson dominance) were identified/calculated. The values of Margalef, Menhinick and Shannon diversity indices were consistently higher in station 1 than the other stations in the order Station 1> Station 2> Station 3. Shannon Wiener values showed that the water and oyster tissues are heavily polluted. It was therefore recommended that anthropogenic activities going on in the area should be regulated.
Key words: Fungal diversity, Mangrove oyster, Woji/Trans-Amadi Creek, Port Harcourt
I. INTRODUCTION
Due to increased anthropogenic activities resulting from urbanization in the past decade there has been increased introduction of organic and inorganic wastes into the aquatic environments (Otene and Alfred-Ockiya, 2019). This therefore, caused increased loads and diversity of species of microbial organisms especially fungi in the aquatic environment and biota. It has been observed that the diversity of fungi and other microbes found in water are also associated with the biota therein.
Nontokozo et.al (2017) opined that there is a global growing interest in the occurrence and diversity of fungi and their secondary metabolites in the aquatic ecosystems especially with respect to their roles in water quality and human health. The safety of seafood consumption by humans among other things depends largely on the diversity and loads of fungi and other microbes present in the food.
