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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Natural and anthropogenic factors influencing abundance of the benthic macrofauna along the shelf and slope of the Gulf of Guinea, a large marine ecosystem off West Africa

100%
Pabis K., Sobczyk R., Sicinski J., Ensrud T., Serigstadt B.
Oceanologia
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2020
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tom 62
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nr 1
2

Helminth parasites [Cestoidea, Nematoda, Pentastomida] of selected herpetofauna from Cameroon, West Africa

84%
McAllister C. T., Bursey C. R., Freed P. S.
Acta Parasitologica
|
2010
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tom 55
|
nr 1
90-93
Twenty-nine individual amphibians (2 families, 3 species) and 12 individual reptiles (2 families, 2 species) from Douala, Cameroon (West Africa) were examined for helminths. Seventeen (59%) of the amphibians and 11 (92%) of the reptiles were found to harbor at least 1 species of helminth; 10 (34%) of the amphibians and 4 (33%) of the infected reptiles harbored multiple infections. A cestode, 6 species of nematodes, and a pentastomid were found in the herpetofauna surveyed. Nine new host and six new geographic distribution records are reported.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Bioaccumulation of total hydrocarbon and heavy metals in body parts of the West African red mangrove crab (Goniopsis pelii) in the Niger Delta, Nigeria

84%
Numbere A. O.
International Letters of Natural Sciences
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2019
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tom 75
This study is based on bioaccumulation of total hydrocarbon (THC) and heavy metals in body parts of the West African red mangrove crab (G. pelii), which inhabit polluted mangrove forests. Thirty crabs were captured in October, 2018 and sorted into male and female. Their lengths and widths were measured, and body parts dismembered and oven-dried at 70 ͦC for 48 hours. Physicochemical analysis for Cadmium (Cd), Zinc (Zn), Lead (Pb) and THC was measured by spectrophotometric method using HACH DR 890 colorimeter (wavelength 420 nm) and microwave accelerated reaction system (MARS Xpress, North Carolina) respectively. There was no significant difference (P > 0.05) in THC and heavy metals in the body parts of crabs. However, Zinc was highest in claw (993.4±91.3 mg/l) and body tissues (32.5±1.9 mg/l), Pb was highest in carapace (34.6± 2.8 mg/l) and gill (151.9±21.6 mg/l) while THC was highest in intestine (39.5±2.9 mg/l) and gut (52.4±13.4 mg/l). The order of concentration is Zn>Pb>THC>Cd. Male crabs had slightly higher THC and heavy metal concentration than female crabs probably because of their large size. There is negative correlation between carapace area and THC concentration (R = -0.246), meaning THC decreases with increasing carapace size. Internal parts of crab had higher THC and heavy metal concentration than external parts. These results show that there is high bioaccumulation of THC and heavy metals in crab, which is above WHO/FAO standard. This implies that the crabs are unfit for human consumption. The smaller the crab the better it is for consumption in terms of bioaccumulation of pollutants.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Lengthz-weight relationship and condition factor of Coelotilapia joka (Thys van den Audenaerde, 1969) in the Rokel/Seli River, West Africa

84%
Konoyima K. J., Mansaray A., Ndomahina E. T., Amara E. B.
International Letters of Natural Sciences
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2020
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tom 77
This study was conducted in the lower, middle and upper reaches of the Rokel/Seli River, Northern Sierra Leone. There is a research gap on the growth or wellbeing of tilapia fish species in Sierra Leone. The objective of this study is to determine the length-weight relationship and condition factor of Coelotilapia joka from the main river channel. This research could contribute to promoting an agenda for fish culture practices for the fish. A total of 228 specimens of Coelotilapia joka were collected using gill nets. Fish length and weight measurements were done using fish measuring board and digital weighing balance respectively. Measurement for water quality was made using the Jemway multi-parameter water quality measuring device (Model: J970, Barloworld Scientific, United Kingdom). The values for regression coefficient “b” gave 2.5437, 2.1841 and 2.4585 for males, females and combined sex respectively, implying a negative allometric growth in the fish at (b<3.0). Similarly, a strong positive linear correlation “r” exists for male (0.947) and female (0.827) species of C. joka. Mean condition coefficient (K) was 2.113 ± 0.309 for males and 1.969± 0.359 for females. The lowest condition factor for male,1.995 and female,1.743 were recorded in March and April respectively, and the highest, 2.552 and 2.067 recorded in August. These values, however, suggest that the fish was in good condition (K>1). The difference in ‘K” for both sex is significant (p<0.05). A study for a period of one year could, however, provide a complete analysis of seasonal variations in growth and condition of the fish.
5

O muzyce popularnej Afryki Zachodniej: rozmowy i obserwacje

84%
Glogowski M.
Afryka, Azja, Ameryka Łacińska
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2001
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tom 78
101-111
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Phytochemistry, nutritional composition, and pharmacological activities of Thaumatococcus daniellii (Benth): a review

67%
Fadahunsi O., Adegbola P. I., Olorunnisola S. O., Akinloye O. A.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
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2021
|
tom 102
|
nr 1
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