@article {668, title = {Length-weight relationships and condition factors of Mormyridae species in the Niger River: implications for conservation and management}, journal = {Limnology and Freshwater Biology }, volume = {2025}, year = {2025}, month = {Jan-01-2025}, pages = {215-221}, abstract = {

The length-weight relationship and condition factor of the ten most abundant Mormyridae species in the Niger River at Niamey were examined from August to November 2023. The species assessed were\ Mormyrus rume,\ Campylomormyrus tamandua,\ Pollimyrus isidori,\ Brienomyrus niger,\ Hyperopisus bebe, Mormyrus macrophthalmus,\ Mormyrops anguilloides,\ Brevimyrus niger,\ Mormyrops oudoti,\ Cyphomyrus Psittacus, and\ Marcusenius cyprinoides. Analysis of their length-weight relationships revealed \“b\” values ranging from 2.08 to 2.87, suggesting negative allometric growth across all species. Condition factor (k) values varied from 1.22 \± 0.31 for\ H. bebe\ to 10.48 \± 2.83 for\ M. cyprinoides, with no significant differences in average condition factors among the species. These findings highlight the potential vulnerability of Mormyridae species to environmental changes and anthropogenic pressures, emphasizing the need for targeted conservation measures. The results underscore the importance of sustainable fisheries management practices to preserve biodiversity and ensure the long-term productivity of the Niger River ecosystem. The observed negative allometric growth patterns indicate that environmental conditions may be suboptimal for these species, potentially due to factors such as habitat degradation, water quality issues, or overfishing. Addressing these challenges through habitat restoration and regulatory measures could enhance the resilience of fish populations and support sustainable fisheries.

}, keywords = {condition factor, length-weight analysis, Mormyridae, sustainable fisheries management, the Niger River}, issn = {2658-3518}, doi = {10.31951/2658-3518-2025-a-2-215}, url = {https://doi.org/10.31951/2658-3518-2025-a-2-215}, author = {Souley, S.M.N. and Harouna, M. and Ado, M.I. and Youssoufa, I.} } @article {620, title = {The Complete Genome Sequences of 38 Species of Elephantfishes (Mormyridae, Osteoglossiformes)}, year = {2022}, month = {Nov-21-2022}, abstract = {

We present the complete genome sequences of 38 species of elephantfishes from 20 genera. Illumina sequencing was performed on genetic material from single wild-caught individuals. The reads were assembled using a de novo method followed by a finishing step. The raw and assembled data is publicly available via Genbank.

}, issn = {2687-7945}, doi = {10.56179/001c.56077}, url = {http://dx.doi.org/10.56179/001c.56077}, author = {Rose Peterson and John P Sullivan and Stacy Pirro} } @article {538, title = {Anal-fin ray morphology indicates sexual maturity in Brevimyrus niger (Teleostei, Mormyridae)}, journal = {Journal of Fish Biology}, year = {2016}, month = {Jan-10-2016}, abstract = {

This osteological survey of 249 specimens of Brevimyrus niger ranging in size from 44 to 137\ mm standard length (LS) demonstrated that developmental changes in anal-fin morphology can serve as a predictor of sexual maturity in this species. Anal-fin ray bases begin to expand when fish reach c. 90\ mm LS at which size and above there were roughly equal numbers of individuals observed with expanded and unmodified anal-fin bases, reflecting a 1:1 sex ratio.

}, doi = {10.1111/jfb.13163}, url = {http://doi.wiley.com/10.1111/jfb.13163}, author = {Stell, S. K. and Moller, P.} } @article {450, title = {The air-breathing behaviour of Brevimyrus niger (Osteoglossomorpha, Mormyridae)}, journal = {Journal of Fish Biology}, volume = {71}, year = {2007}, month = {Jan-07-2007}, pages = {279 - 283}, abstract = {

Brevimyrus niger is reported to breathe atmospheric air, confirming previous documentation\ of air breathing in this species. Air is taken up by rising to the water surface and gulping, or permanently resting just below the surface, depending on the environmental conditions.

}, issn = {0022-1112}, doi = {10.1111/jfb.2007.71.issue-110.1111/j.1095-8649.2007.01473.x}, url = {http://www.blackwell-synergy.com/toc/jfb/71/1http://doi.wiley.com/10.1111/j.1095-8649.2007.01473.x}, author = {Moritz, T. and Linsenmair, K. E.} } @article {446, title = {Note sur la syst{\'e}matique des poissons Mormyriformes. Le probl{\`e}me des genres Gnathonemus Gill, Marcusenius Gill, Hippopotamyrus Pappenheim, Cyphomyrus Myers et les nouveaux genres Pollimyrus et Brienomyrus}, journal = {Revue de Zoologie et de Botanique Africaines}, volume = {84 (pts 1-2)}, year = {1971}, month = {09/1971}, pages = {99-110}, chapter = {99}, author = {Taverne, L.} } @article {510, title = {Contribution a l{\textquoteright}{\'e}tude de la faune ichthyologique du bassin du fleuve S{\'e}n{\'e}gal. III. Mormyridae}, journal = {Bulletin de l{\textquoteright}Institut Fran{\c c}ais d{\textquoteright}Afrique Noire}, volume = {35}, year = {1973}, pages = {665-704}, chapter = {665}, author = {Reizer, C. and Mattei, X. and Chevalier, J.L.} }