Miebaka Moslen

Rivers State University of Science and Technology | RSUST · Department of Applied And Environmental Biology

The constant increase in human populations and its associated activities has become a stress factor for ecological communities of the aquatic ecosystem/environment. The aquatic environment/ecosystem particularly, the intertidal zones, mangrove forests and wetland ecosystems serve as a refuge for a diversity of organisms including fiddler crabs (Uca...

Seafood and other environmental matrices are major entry route of harmful pollutants into humans due to constant contamination of the aquatic environment hence requires monitoring. This study scientifically explored the hypothesis that benthic gastropods bioaccumulate harmful pollutants that pose health risk to consumers of the sea food. Fifty samp...

The study assessed human health risk and accumulation of heavy metals (Cd, Cu, Pb, Ni, Cr and Zn) in periwinkles (Tympanotonus fuscatus) obtained from the Niger Delta region of Nigeria. Samples were collected for six months on a monthly basis. The samples were digested according to the method described by Association of official analytical chemists...

Catfish are important fishery resources in the Niger Delta therefore they require studies on its growth patterns and morphometrics. This study examined the relationship between the length and width of catfish otoliths and their fish length. Catfish samples were harvested from New Calabar and Ase Rivers, Niger Delta, Nigeria, by fishers using cast n...

The Okpoka river and the Amadi creek are tributaries of the upper bonny estuary. The study is aimed at identifying the intertidal polychaete species and their abundance in these areas, and using them as indicators of pollution. Three stations were sampled for 6 months on a monthly basis at Marine Base, Abuloma and Kalio-Ama. Results gotten from Wat...

Aliphatic Petroleum hydrocarbons is classed as one of the priority risk substances either singly or in mixture. This study examined their accumulation in edible bivalves (Anadara Senilia senilis) and associated health risk due to consumption in the southern region of Nigeria. Bivalve samples were analyzed using gas chromatography with mean concentr...

ABSTRACT: Zooplankton are diverse group of organisms with little or no swimming ability. They are the animal component of plankton, have short life cycle and quickly respond to changes in their environment; hence, their abundance and community structure serve as an essential tool in providing information on the water quality of a given aquatic envi...

Concentration of PAH in bivalves (Arca senilis) and human health risks due to consumption was examined in samples collected from southern Nigeria and analysed using gas chromatography. Mean PAH concentration (ngkg-1) ranged from 12.0 ± 5.0-5500.0 ± 1000 with a significant difference (p < 0.001) while total PAH ranged from 3000.0-16,000.0. Concentra...

Aim: The present study aims to determine the condition factor incomplete of Tilapia guineensis and Sarotherodon melanotheron in Sombreiro River across Buguma, Abonnema and Degema communities in Rivers State. Study Design: This study employs fieldwork, laboratory experimental design, statistical analysis and interpretation of data. Place and Duratio...

The objective of this study was to determine the impact of bridge construction on abundance and composition of phytoplankton and epipelic algae with respect to bridge construction on a section (ATC Okrika Axis) of Okpoka River, upper Bonny estuary in Nigeria. Phytoplankton and epipelic algae were collected in five replicates from six stations (UA-u...

Bioaccumulation of heavy metals in shrimps (Penaeus sp) and associated health risk via consumption was assessed as aim of this study. Total of 120 shrimp samples were collected from an estuarine creek monthly (January-December 2015) and analyzed using Atomic Absorption Spectrophotometery. Estimated daily intake (EDI), Target hazard quotient (THQ),...

Keywords:Abundance, Diversity, Plankton, Ekerekana and Okochiri creeks Introduction The Ekerekana and Okochiri creeks in the upper Bonny Estuary, Rivers State, Nigeria is prone to effluent discharge from industries located in the area. The plankton of the creeks and the adjoining river were assessed for diversity and abundance. Twenty three station...

The Azuabie creek receives both industrial and domestic waste input in the Trans-Amadi area of Port Harcourt, Nigeria. This study aims to assess the level of some heavy metals (Cr, Ni, Cu, Pb, Ag and Cd) in the tissue of mudskipper fish over time and compare with regulatory limits. Mudskipper (Periophthalmus sp) samples obtained from the creek were...

The characteristics of the sediment of Kolo Creek at Okarki in Rivers State, Nigeria were determined. Six sampling stations were studied; Five (Stn1 to Stn 5) within the creek in areas with considerable operation of illegal bunkering of petroleum products, while Stn 6was a Control. The concentrations of total petroleum hydrocarbons (TPH) ranged fro...

Estuarine ecosystem is unique; it sustains and provides essential ecological services for mankind. Species distribution, abundance and diversity of benthos and their relationships to environmental conditions are very essential to understand the functioning and structure of an estuarine ecosystem. The benthic macrofauna and physico-chemical paramete...

ABSTRACT: The aim of this study was to assess some heavy metals (Cr, Ni, Cd, Pb, Zn and Cu) and hydrocarbon concentrations of Azuabie creek using the Okujagu creek as a control location. Seventy two samples were collected from four stations (AZ1, AZ2, AZ3 and OK) in six months (July – December 2016). Samples were analyzed using AAS and GC spectroph...

The prevalence of eggs of helminth parasites was evaluated in faecal samples of 60 goats and 70 cattles slaughtered at the Trans-Amadi slaughterhouse, Port Harcourt, Nigeria. Floatation and direct microscopy techniques were employed in examining the samples. Two parasite species were recovered from the samples: Dicrocelium dendriticum (a trematode)...

The prevalence of eggs of helminth parasites was evaluated in faecal samples of 60 goats and 70 cattles slaughtered at the Trans-Amadi slaughterhouse, Port Harcourt, Nigeria. Floatation and direct microscopy techniques were employed in examining the samples. Two parasite species were recovered from the samples: Dicrocelium dendriticum (a trematode)...

Sediments from an estuarine creek were assessed in order to ascertain heavy metal contamination and ecological risk status. Seventy-two samples were collected in triplicate per site (July-December 2016), put in labeled polythene bags and preserved in ice chests before laboratory analysis. Air dried samples were digested with Equia-Regia (mixture of...

The aim of this study was to assess the impact of human activities on the benthic macro-invertebrates assemblage of the Isiokpo stream in the Niger Delta, Nigeria. Samples were collected in duplicates from three different sites along the stream (upstream, midstream and downstream). Sample collection was done on a monthly basis for six months (Decem...

Study aim was to assess length-weight relationship-LWR and condition factor of crabs (Callinectes sp) and shrimps (Penaeus sp) from upper the bonny estuary. Seven samples of each specimen were collected monthly between January-December 2015 making total of 168 samples. Samples were immediately moved in coolers to the laboratory for length-weight me...

The mangrove around Okrika including the area bordering the Okpoka Creek a tributary of the Bonny Estuary has been reclaimed while the opposite area remains vegetated. We present here the impact of the reclamation and bridge construction on the macroinvetebrate communities of the Okpoka Creek. Three sample sites were located on either side of the O...

Heavy metal bioconcentration in crabs from an estuarine creek in the Niger Delta was examined using atomic absorption spectrophotometry. Health risk via human exposure to metal toxicity was evaluated. Mean metal levels (µg/g) were Cr 2.32 ± 0.71, Ni 2.76 ± 0.48, Cu 12.94 ± 3.53, Pb 5.67 ± 1.03, Ag 1.83 ± 0.71 and Cd 0.73 ± 0.14 with significant dif...

Fish samples (Mugil cephalus) were collected from Azuabie creek for heavy metal and health risk analysis. Samples were collected monthly (January to December 2015) and examined for heavy metals using Atomic Absorption Spectrophotometery. Temporal variations of heavy metal concentration was significant with mean metal concentrations as Cr 1.96 ± 0.8...

Azuabie creek receives domestic, municipal and industrial wastes due to human activities from settlements, commerce and industries within its vicinity. The aim of this study was to assess the surface water quality of the creek using the adjacent Okujagu creek as a control location. This was done via evaluation of the physicochemical characteristics...

Solid waste is the most visible environmental challenge in many urban areas and the generation of such wastes is on the increase. This is a result of increase in population, urbanization, industrialization and change in consumption pattern. The ultimate endfor most ofthese wastes is the creeks and Rivers around the metropolis. A survey ofsome creek...

The objective of the study was to describe the abundance, distribution and diversity of macro benthic assemblages in Azuabie creek, upper Bonny estuary of the Niger Delta, Nigeria. Benthic samples were collected from ten sampling stations, seven (St. 1, 2, 6, 7, 8, 9 and 10, respectively) along the main creek and three (St. 3, 4 and 5, respectively...

The impacts of human and industrial activities on the physico-chemical quality of sediment of Azuabie Creek in the upper Bonny Estuary of the Niger Delta, Nigeria were studied. Major waste inputs into the creek include run-off from surrounding lands, animal wastes from a major abattoir, human/domestic waste from a high density settlements along the...

The concentrations of cadmium and lead were determined in seven fish species from the Azuabie creek in the upper Bonny estuary of the Niger Delta, which is associated with industrial and abattoir discharges. Cadmium concentrations ranged from 0.01 to 0.06 mg/kg and show no significant difference between species. The concentrations of lead (ranging...

Two creeks (Azuabie and Obufe) in the upper Bonny Estuary, Nigeria were studied to determine how industrial and other anthropogenic activities have influenced their relative sediment qualities. Total organic carbon, total hydrocarbons, zinc, lead, cadmium and iron were significantly higher in the Azuabie creek, while phosphate, nitrate, copper and...