Heavy metal contaminants in Malapterurus electricus (Gmeli, 1789), Tilapia zillii (Gervais, 1848) and water from Ikpoba Reservoir, Benin City, NIGERIA

Wangboje, O. M. and Ekundayo, O. T.

The study was carried out to evaluate the potential health risk associated with the consumption of fish and water from the Ikpoba Reservoir, with regard to heavy metal contamination. The concentrations of some heavy metals, Manganese (Mn),Zinc (Zn...

Bioaccumulation of heavy metals in earthworms collected from abattoir soilsin Abeokuta, south-western Nigeria

Owagboriaye, F. O., Dedeke, G. A., Ademolu, K. O. and Adebambo, O. A.

Activities in abattoirs and direct release of its waste into the environment are on the increase due to high protein demand in the country; and there is a need for proper assessment of abattoir soil for pollution. This study evaluated bioaccumulat...

Forest degradation and its impact on anuran diversity and abundance in Arun Owun, Sapele, Delta State, Nigeria

Onadeko, A. B.

The effects of vegetation degradation on the abundance and diversity of anuran species were investigated in Arun Owun, Delta State. Combinations of visual encounter survey (VES) and acoustic encounter survey (AES) were conducted to estimate the lo...

Pattern of parasitic infections in anurans from a mangrove community of the Niger Delta, Nigeria

Aisien, M. S. O., Uwagbae, M., Edo-Taiwo, O., Imasuen, A.A. and Ovwah, E.

Helminth parasites of anurans from Ijala Ikeren, a mangrove-contiguous community, in the Niger Delta of Nigeria were
investigated. A total of 76 anurans belonging to 4 families, 5 genera and 9 species were examined and they include

Perceived public health effects of occupational and residential exposure to electronic wastes in Lagos, Nigeria

Alabi, O. A. and Bakare, A. A.

High levels of environmental contamination can occur from e-waste processing, putting workers and residents in surrounding areas at risk as they are likely to be exposed to complex mixtures of unknown toxicity. This study was aimed at assessing th...

Insecticidal activities of three weed varieties against the Bamboo Powder Post Beetle Dinoderus minutus Fabricius (Coleoptera, Bostrichidae)

Popoola K. O. K, George-Onaho J. A, Alamu O. T. and Ayandokun A. E.

The insecticidal activities of crude ethanol extracts of leaves of three weed species, Siam weed, Chromolaena odorata Linn., Milk weed, Euphorbia heterophylla Linn. and Tree Marigold Tithonia diversifolia (Hemsl.) A, Gra...

Estimates of home range sizes of Arvicanthis niloticus Desmarest, 1822 (Muridae) in savannah fields near Kano, Nigeria

Rabiu S. and Rose R. K.

Determination of rodent home range (HR) is invaluable for characterizing population distribution and strategies for accessing food, mate and nest sites, as well as, dispersal into new fields. The present study, in savannah fallow fields near Kano...

Effects of artemether on parasite burden and liver pathology in mice infected with Ibadan isolate of Schistosoma mansoni

Adejoro F. T, Ilo E, Ohore O. G. and Odaibo A. B.

This study aimed at evaluating the pathological features associated with Schistosoma mansoni infection and assessment of the efficacy of artemether in the treatment of intestinal schistosomiasis in laboratory mice. Cercariae harvested fro...

Anopheles gambiae s.l. insecticide susceptibility status in Umudike, Ikwuano LGA, Abia State, Nigeria

Ekedo, C. M. and Ukpai, O. M.

This study was conducted in order to determine the insecticide susceptibility status of Anopheles gambiae in Umudike, Abia State, Nigeria. Larval and pupal stages of An. gambiae mosquitoes were collec...

Histological, microbiological, physicochemical and heavy metals evaluation of effluent from Kara Cow Market, Ogun State, Nigeria in guppy fish (Poecilia reticulata)

Sogbanmu, T. O., * Sosanwo, A. A. and Ugwumba, A. A. A.

The Ogun River is a sink for untreated effluents discharged from the Kara Cow Market, Ogun State. In this study, microbiological, physicochemical and heavy metals evaluation were carried out on effluent from the market...

Low levels of heavy metals in shrimps (Decapoda:  Atyidae) from Omodo River in southern Nigeria

Dirisu, A. R. *

Shrimps remain an important source of proteins worldwide. The contamination of the environments with effluence such as from domestic, healthcare systems, industrial waste discharges and agricultural run-offs; are posin...

Histopathological alterations in gills, kidney and liver of Nile Tilapia (Oreochromis niloticus) fingerlings exposed to aqueous leaf extract of Desert Date (Balanites aegyptiaca)

Wakawa, A. I. and Audu, S. B.

One of the many biomarkers for determining the effects of pollutants on fish is changes in organ histopathology. Leaves of Balanites aegyptiaca have been reported to have phytochemicals with fish anaesthetic property. This study sought to...

Effects of collection zones and storage on hatchability and survival of feral helmeted guineafowl (Numida meleagris galleata pallas) eggs

Yusuf, A. A.,3 Jayeola, O. A.,1 Osunsina, I. O. O.,1 and Dedeke, G. A.

The desire to shore up the shortfall in protein supply, the increased awareness of the importance of cholesterol free
animal protein, like guineafowl, and the need to conserve their wild genes, have necessitated studies on improved

Heavy metals concentrations in water, sediment, water hyacinth (Eichhornia
crassipes) and Frillfin Goby (Bathygobius soporator, Cuvier and Valenciennes,
1837) from Ologe Lagoon, Southwest, Nigeria

Ndimele, P. E.* and Owodeinde, F. G.

The level of heavy metals in water, sediment, water hyacinth (Eichhornia crassipes) and frillfin goby (Bathygobius soporator) from Ologe Lagoon and its tributaries were monitored because of the importance of the water bodies to t...

Implications of ecological parameters on earthworm diversity and abundance
in southwestern Nigeria

Aladesida, A. A.* and Owa, S. O.

A survey on the diversity and abundance of earthworms in southwestern Nigeria was carried out. Earthworm and soil samples
were collected from thirty different locations within the sub-region. Earthworms were identified and soil samples were a...

Quality assessment of some commercially produced animal feeds and two native forages in southern Nigeria

Onyagbodor, O. P. * and Oyedeji, J. O.

Samples of broiler starter feed, grower mash, broiler finisher feed and layers mash were collected from three commercial feed manufacturers and were coded commercial feed A (CFA), commercial feed B (CFB) and commercial feed C (CFC). The proximate...

Fish types, breeding grounds and migratory routes in Akwa Ibom State, Nigeria

Okogwu, O. I*, Elebe, F. A. and Nwonumara, G. N.

Akwa Ibom State is one of the six maritime states in Nigeria and has a shoreline of approximately 129km. Three important rivers (Cross, Imo and Kwa Ibo) transiting through some Nigerian states, terminally pass through the state before discharging...

Assessment of the incidence of microplastics at Ndibe, Cross River, Nigeria

Nwonumara, G. N. *, Okoro, P. O. and Okogwu, O. I.

The menace of microplastics in the aquatic ecosystems is of increasing concern worldwide mainly due to their impact on the entire ecosystem and human health. In order to contribute to knowledge, the incidence of microplastics in water and fish sam...

Amphibian diversity in urban and peri-urban landscapes of Benin City, a
Southern Nigerian City in the rainforest biotope

Ijie, M. E. , Alari, E. O. , Ogoanah, S. O.* and Aisien, M. S. O.

Benin City, the capital of Edo State of Nigeria has undergone tremendous changes in recent times, especially with the aggressive rate of urbanisation in the last two decades. This has invariably resulted in habitat loss and fragmentation for the a...

Biological invasion: evidence from a tropical reservoir (Eleiyele, South West Nigeria)

Oluwale, F. V * and Ugwumba, A. A. A.

The encroachment of freshwater territories by invasive species is a global issue with its associated co-existence, displacement and facilitation of native species. The blackchin tilapia, Sarotherodon melanotheron is one of the most succes...

Assessment of benthic macroinvertebrate fauna as bio-indicator and physicochemical characteristics in the Gulf of Guinea off western Nigerian shore

Bassey, B. O*., Olapoju, O. A.*, Yakub, A. S., Igbo, J. K., Bello, B. O., Abiodun, O. A., Nosazeogie, E. O., Izge, M. A. and Haruna, A. F.

Benthic macroinvertebrates are helpful bio-indicators providing better understanding of modified and perturbed aquatic ecosystems. This study seeks to determine the ecological status and diversity of the macroinvertebrate community in relation to...

Observations on the feeding activities of the West African Manatee, Trichechus senegalensis Link, 1795 in a semi-wild environment

Egwali, E. C.,* Akpan, A. U., Esenowo, I. K., Nelson, A. U., Chukwu, M. N. and Adeyemi-Ale, O. A.

The presence of the West African manatee, Trichechus senegalensis in a semi-wild holding facility in Little Stream Farm, Ibesikpo Asutan Local Government Area, presented an opportunity to study directly, aspects of their biology, which hi...

Bird feathers as a non-invasive method for ecotoxicological monitoring; a rapid review

Adeogun, A. O.*, Chukwuka A. V. , Fadahunsi, A. A., Okali, K. D., Oluwakotanmi, P. G., Ibor, O. R., Emasoga, P. and Egware, T. U.

The decline in animal population with resulting risk of eventual disruption of ecosystem functioning has necessitated moves towards non-invasive sampling methods for ecotoxicological studies. These efforts have focused on developing sampling metho...

Impact of environmental degradation on biodiversity conservation in Nigeria

Mafiana, C. F.*, Jayeola, O. A. and Iduseri, E. O.

Biodiversity is critical for sustainability but it is being increasingly threatened by anthropogenic activities, such as habitats’ degradation through deforestation, unsustainable shifting cultivation and draining of wetlands; as well as ind...

Acute and sub-lethal toxicity in African mud catfish (Clarias gariepinus, Burchell, 1822) exposed to some pesticides

Akeredolu, O. E.*, Ekele, S. A., Olaleru, F. and Egonmwan, R. I.

Pesticides from agricultural run-off pose a severe threat to non-target organisms, such as fishes. This study was carried out to evaluate acute toxicity and histological and genotoxic effects (erythrocytic nuclear abnormalities) of lethal and subl...

Environmental variables and benthic macroinvertebrates of Temidire Stream associated with an oil depot, Ibadan, southwest Nigeria

Ayoade, A. A. * and Adoh, D. S.

Streams are often recipients of pollution from agricultural, domestic and industrial sources though they are important sources of water supply and habitats of several aquatic species. Regular monitoring is required to protect this fragile but impo...

Anthropogenic impact on environmental variables and macroinvertebrates community of River Eme, South -East, Nigeria

Anyanwu, E. D.*, Etusim, P. E. and Umeham, S. N.

Macroinvertebrates are good bioindicators of water quality and ecosystem health and are often used to study anthropogenic effect on aquatic ecosystems. Consequently, some environmental variables and macroinvertebrates of Eme river were studied to...

Hazardous effects of plastic wastes on land biodiversity: A review

Anunobi, T. J.*

Plastic pollution is ubiquitous throughout the world’s ecosystem. Increase in the world’s plastic production and use, inefficient recycling, indiscriminate disposal, synthetic nature and non- biodegradability of plastics have made it a...

Temporal changes in limno-morphometric characteristics in a floodplain lake within Cross River ecosystem during low water period

Nwonumara, G. N.* and Okogwu, O. I.

Iyieke Lake is one of the floodplain lakes within the middle reaches of the Cross River, it is a major foraging and breeding site of several fish species. It is not directly connected to any river, so the water level depends on seasonal inundation...

Assessment of some physical, chemical and biological parameters of Lake
Dangana, Niger State, Nigeria

Adamu, K. M. , Mohammed, Y. M. *, Ibrahim, U. F. , Abdullahi, I. L. and Jimoh, Y. O.

Ecological systems change over time due to anthropogenic and natural activities, regular monitoring is therefore necessary for identifying malignant changes and conservation of biodiversity. This study was undertaken to ascertain the health and bi...

The use of myths and taboos in wildlife conservation: The case of Bayelsa-East Senatorial District of Nigeria

Ihinmikaiye, S. O. *, Ochekwu, E. B.  and Ojo, V. I.

The use of myths and taboos in species conservation represent a sustainable in situ means to wildlife protection. This study examined the role of taboos (traditional laws) in wildlife conservation within Bayelsa-East Senatorial District....

The zooplankton and environmental characteristics of Yardantsi Reservoir,
Gusau, Nigeria

Jabbi, A. M. * and Isah, B.

Zooplankton play an important role in the faunal biodiversity of aquatic ecosystems as they assist in transferring algal energy to higher trophic levels through grazing and also eliminate harmful algae from water. The zooplankton and environmental...

Bacterial assessment of smoke-dried fishes sold at three landing market sites
in Anambra State, Nigeria

Edeh, I. C.*, Nsofor, C. I., Ikechukwu, C. C., Olisa, C. S., Afoemezie, P. I. and ChidubemNwachinemere, N. O.

The study focused on the bacteriological profile of four different smoke-dried fishes Clarias gariepinus (CG),Oreochromis niloticus (ON), Malapterurus electricus (ME), and Citharinus citharus (CC) sold at three...

Ethnobotanical study of plants used for treating intestinal worms in Ibadan,

Afolayan, F. I. D. * and Sowemimo, R.

Poverty and poor sanitation in sub-Saharan Africa are the main reasons for parasitic infection prevalence. Medicinal herbs have been sources of natural and cheaper remedies for the treatment of many parasitic infections, including intestinal paras...

The physico-chemical variables and phytoplankton of Ufiobodo and Ebonyi
Reservoirs, Ebonyi State, Nigeria

Nwonumara, G. N.* Elebe, F. A. and Nwibo, O. D.

The water quality and phytoplankton of Ufiobodo and Ebonyi River reservoirs were studied for nine months from March to November, 2019 to evaluate the suitability of the reservoirs for domestic water supply and habitat for aquatic organisms. Temper...

Diversity, distribution and abundance of fish species in Lake Asejire, Oyo
State, Nigeria

Ipinmoroti, M. O.* and Iyiola, A. O.

Aquatic systems in Nigeria have suffered stress induced by human activities which alter the natural composition of the water resources. This study investigated the diversity, distribution and abundance of fish species in Lake Asejire. The lake was...

Nutritional and socio-economic analyses of processed catfish (Clarias gariepinus) using three kilns in Lagos State, Nigeria

Ogunbambo, M.M.*, Akapo K.M. and Chetuya O.G.

Smoke-drying is a major way of processing catfish and this prompted the study of nutritional and socio-economic assessment of smoke-dried catfish in Makoko fish market in Lagos State, Nigeria. Standard methods were utilised for the analyses of pro...

Quality assessment of smoke-dried Clarias gariepinus and Chrysichthys
nigrodigitatus stored in two storage facilities

Osibona, A. O.* and Amaechi, C.

The quality of smoke-dried fish can be enhanced by storing the products in good storage facilities. This research was carried out to determine the proximate composition, microbiological quality and sensory properties of smoke-dried Clarias gar...

Aspects of the growth and reproductive characteristics of Labeo coubie
(Ruppell 1832) in Upper Benue River, Nigeria

Ajijola, K. O. *, Ugwumba, A.A.A. and Sogbesan, O. A.

Labio coubie is an ecologically and economically important fish of River Benue, thus the length-weight relationship, condition factor and fecundity of the fish were investigated in order to provide information essential for its sustainabl...