@article {660, title = {Diet of some fish species of the family Mormyridae (Actinopterygii: Teleostei; Bonaparte, 1831) from the upper Sanaga River, Central Region of Cameroon}, journal = {Journal of Animal Diversity}, volume = {6}, year = {2024}, month = {31 March 2024}, pages = {51-62}, chapter = {51}, abstract = {

This study was carried out between October 2020 and October 2021 with the aim of determining sustainable management options and nutrition for the domestication of Mormyridae fish species living in the Sanaga River in central Cameroon. For this purpose, 451 specimens collected from local fishermen were identified and grouped into four genera and seven species, constituting 20.84\% Campylomormyrus phantasticus (Pellegrin), 5.32\% Hippopotamyrus castor (Pappenheim), 24.61\% Mormyrops anguilloides (Linnaeus), 18.63\% Mormyrops caballus (Pellegrin), 4.66\% Mormyrops zanclirostris (G\ünther, 1867), 15.52\% Mormyrus rume (Valenciennes), and 10.42\% Mormyrus tapirus (Pappenheim). Fish were measured, and parameters were obtained after dissection using intestinal morphometric characteristics and stomach content analysis methods. The emptiness coefficient varied from 0\% (Hippopotamyrus castor and Mormyrops zanclirostris) to 26.66\% (Mormyrus rume). The relative mass of the intestine was low in all studied species; the intestinal coefficient and the Zihler index of all these species are within the range of carnivorous species. Analysis of stomach contents revealed a broad food spectrum containing twelve categories of prey. Insects, macrophytes and larval insect shelters were the preferred foods of Mormyrops anguilloides, Mormyrops caballus and Mormyrops zanclirostris, while insect larvae and larval shelters were the preferred prey for other species. Site and season had little effect on the categories of prey consumed by these species.

}, keywords = {Biodiversity, Ebebda, feeding, Monatele, Mormyridae, stomach contents}, doi = {10.22034/JAD.2024.6.1.5}, url = {http://dx.doi.org/10.22034/JAD.2024.6.1.5}, author = {Akohogni, MAM and Medjo, KE and Zebaze, TB and Chiassa, NKA and Mepa, TCP and Tiogu{\'e}, TC and Fon, ED} } @article {644, title = {Trophic ecology of the African riverine elephant fishes (Mormyridae)}, volume = {14}, year = {2024}, month = {Aug-01-2024}, abstract = {

Multiple species of the elephant fishes (Mormyridae) commonly coexist in sympatry in most African tropical rivers and lakes. In this study, we investigated the trophic ecology and potential trophic niche partitioning of eleven mormyrid fish species from the Sanaga River system in Cameroon using the stable isotope composition of carbon and nitrogen in the muscle samples. Albeit most mormyrids mainly feed on invertebrates, we found differences in isotope ratios, and we report signs of the trophic niche partitioning among species. We further found significant differences in isotopic signatures within the Mormyrus genus, suggesting ecological niche diversification among three closely related species. We have also evaluated differences in the isotopic signals between seasons in four species, which could be possibly caused by species migration and/or anthropogenic agricultural activities. To evaluate body shape, we applied geometric morphometric analyses, and we show that most of the species are clearly morphologically separated. We focused on the mormyrid ecomorphology to identify a possible interaction between shape and ecology, and we found a relationship between the \δ13C (but not \δ15N) isotopic signal and morphology, suggesting their interplay during mormyrid evolution. Overall, we present robust evidence of the trophic niche partitioning within the mormyrid species community, and we integrate trophic ecology with morphometrics, shedding light on the enigmatic evolutionary history of these fascinating African fishes.

}, keywords = {mormyrids, stable isotopes, trophic ecology, trophic position, trophic resource portioning}, issn = {2045-7758, 2045-7758}, doi = {10.1002/ece3.70173}, url = {http://dx.doi.org/10.1002/ece3.70173}, author = {Sommer, Gina Maria and Njom, Samuel Didier and Indermaur, Adrian and Nyom, Arnold Roger Bitja and Jandov{\'a}, Kate{\v r}ina and Kukla, Jaroslav and Petrt{\'y}l, Miloslav and Hork{\'a}, Petra and Musilova, Zuzana} } @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 {10.3897/zookeys.1129.90287, title = {Mitogenome recovered from a 19th Century holotype by shotgun sequencing supplies a generic name for an orphaned clade of African weakly electric fishes (Osteoglossomorpha, Mormyridae)}, journal = {ZooKeys}, volume = {1129}, year = {2022}, pages = {163-196}, publisher = {Pensoft Publishers}, abstract = {

Heteromormyrus Steindachner, 1866, a genus of Mormyridae (Teleostei: Osteoglossomorpha), has been monotypic since the description of Heteromormyrus pauciradiatus (Steindacher, 1866) from a single specimen. No type locality other than \“Angola\” was given and almost no specimens have been subsequently identified to this species. In order to investigate the relationship of this taxon to fresh specimens collected in Angola and elsewhere, whole genome paired-end sequencing of DNA extracted from the holotype specimen of Heteromormyrus pauciradiatus was performed and a nearly complete mitogenome assembled from the sequences obtained. Comparison of cytochrome oxidase I and cytochrome b sequences from this mitogenome to sequences from recently collected material reveal that Heteromormyrus pauciradiatus is closely related to specimens identified as Hippopotamyrus ansorgii (Boulenger, 1905), Hippopotamyrus szaboi Kramer, van der Bank \& Wink, 2004, Hippopotamyrus longilateralis Kramer \& Swartz, 2010, as well as to several undescribed forms from subequatorial Africa collectively referred to in the literature as the \“Hippopotamyrus ansorgii species complex\” and colloquially known as \“slender stonebashers.\” Previous molecular phylogenetic work has shown that these species are not close relatives of Hippopotamyrus castor Pappenheim, 1906, the type species of genus Hippopotamyrus Pappenheim, 1906 from Cameroon, and are thus misclassified. Hippopotamyrus ansorgii species complex taxa and another species shown to have been misclassified, Paramormyrops tavernei (Poll, 1972), are placed in genus Heteromormyrus and one genetic lineage from the Kwanza and Lucala rivers of Angola are identified as conspecific Heteromormyrus pauciradiatus. Three additional new combinations and a synonymy in Mormyridae are introduced. The morphological characteristics and geographical distribution of the genus Heteromormyrus are reviewed. The electric organ discharges (EODs) of Heteromormyrus species are to be treated in a separate study.

}, keywords = {Angolan freshwater fishes, Heteromormyrus, Hippopotamyrus, historical DNA, mitogenomics, mormyrid, museomics, slender stonebasher}, issn = {1313-2989}, doi = {10.3897/zookeys.1129.90287}, url = {https://doi.org/10.3897/zookeys.1129.90287}, author = {John P Sullivan and Carl D Hopkins and Stacy Pirro and Rose Peterson and Albert Chakona and Tadiwa I. Mutizwa and Christian Mukweze Mulelenu and Fahad H. Alqahtani and Emmanuel Vreven and Casey B. Dillman} } @article {610, title = {Ost{\'e}ologie des Genres Marcusenius Gill, Hippopotamyrus Pappenheim, Cyphomyrus Myers, Pollimyrus Taverne et Brienomyrus Taverne (Pisces Mormyriformes)}, journal = {Annales du Mus{\'e}e royal de l{\textquoteright}Afrique centrale, Sciences Zoologiques}, volume = {188}, year = {1971}, pages = {144}, url = {https://www.nhbs.com/osteologie-des-genres-marcusenius-gill-hippopotamyrus-pappenheim-cyphomyrus-myers-pollimyrus-taverne-et-brienomyrus-taverne-pisces-mormyriformes-book}, author = {Taverne, L.} } @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 {cite-key, title = {Die Familie der Mormyren. Eine anatomisch-zoologische Abhandlung.}, journal = {M{\'e}moires de l{\textquoteright}Acad{\'e}mie Imp{\'e}riale des Sciences de St. P{\'e}tersbourg (7i{\`e}me S{\'e}rie)}, volume = {7}, number = {4}, year = {1864}, pages = {p.153}, keywords = {Petrocephalus pictus}, url = {https://www.biodiversitylibrary.org/page/13677285}, author = {Marcusen, J.} } @article {291, title = {Neue und ungen{\"u}gend bekannte elektrische Fische (Fam. Mormyridae) aus den deutsch-afrikanischen Schutzgebieten}, journal = {Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin}, volume = {1906}, number = {10}, year = {1906}, month = {12/1906}, pages = {260{\textendash}264}, url = {http://biodiversitylibrary.org/page/8893086}, author = {Pappenheim, P.} } @article {400, title = {Description of a new mormyrid fish from the White Nile}, journal = {Annals and Magazine of Natural History (Series 7)}, volume = {15}, number = {89}, year = {1905}, month = {05/1905}, pages = {457}, author = {George A. Boulenger} } @inbook {121, title = {Catalogue of the Fresh-Water Fishes of Africa in the British Museum (Natural History)}, booktitle = {Catalogue of the Fresh-Water Fishes of Africa in the British Museum (Natural History)}, volume = {I}, year = {1909}, pages = {29-145}, publisher = {British Museum (Natural History)}, organization = {British Museum (Natural History)}, address = {London}, url = {https://biodiversitylibrary.org/page/37889609}, author = {George A. Boulenger} } @book {902, title = {The fishes of the Nile}, series = {Zoology of Egypt}, year = {1907}, publisher = {Pub. for the Egyptian government by H. Rees, ltd.}, organization = {Pub. for the Egyptian government by H. Rees, ltd.}, address = {London}, doi = {10.5962/bhl.title.51710}, url = {http://www.biodiversitylibrary.org/item/110263$\#$page/1/mode/1up}, author = {George A. Boulenger} } @article {269, title = {Mormyrid{\'e}s du Cameroun recueillis par M. Th. Monod. Description d{\textquoteright}un genre, de quatre esp{\`e}ces et d{\textquoteright}une vari{\'e}t{\'e}}, journal = {Bulletin de la Soci{\'e}t{\'e} Zoologique de France}, volume = {52}, year = {1927}, month = {09/1927}, pages = {294{\textendash}300}, url = {http://gallica.bnf.fr/ark:/12148/bpt6k5442540x/f337.image.langEN}, author = {Pellegrin, J.} } @article {832, title = {Les poissons du bassin du Tchad et du bassin adjacent du Mayo Kebbi {\'e}tude syst{\'e}matique et biologique}, year = {1964}, pages = {1{\textendash}483}, publisher = {ORSTOM}, address = {Paris}, url = {http://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_2/memoires/19994.pdf}, author = {Blache, J.} } @article {181, title = {Le genre Hippopotamyrus (Pisces, Mormyridae) en Afrique de l{\textquoteright}Ouest, avec la description d{\textquoteright}Hippopotamyrus paugyi n. sp.}, journal = {Cybium}, volume = {9}, number = {2}, year = {1985}, pages = {175-192}, author = {L{\'e}v{\^e}que, C. and Bigorne, R.} } @article {831, title = {Aspects of the reproductive biology of Hippopotamyrus pictus from Lake Kainji, with notes on four other mormyrid species}, journal = {Journal of Fish Biology}, volume = {11}, number = {5}, year = {1977}, pages = {437{\textendash}445}, abstract = {

A method is descrihed for the assessment of fecundity in in mormyrrd fish. In all species examined a tri-modal egg size distribution was found in the mature pre-spawning ovary. These modes represented one oocyte and two ova components. The significance of the presence of two sizes of ovum is discussed in relation to breeding periodicity in Hippopotamyrus pictus. Size and age at first maturity are estimated for this species. The probable effects of the formation of the lake on the breeding behaviour of mormyrids is discussed.

}, url = {http://onlinelibrary.wiley.com/store/10.1111/j.1095-8649.1977.tb04138.x/asset/j.1095-8649.1977.tb04138.x.pdf?v=1\&t=hqzjgrlk\&s=80a89cbded91f381ca05b0ee20d62e74d4487e99}, author = {Blake, B.F.} } @book {159, title = {The Mormyridae and other Osteoglossomorpha (CD-ROM)}, series = {World Biodiversity Database, CD-ROM Series}, volume = {2000}, year = {2000}, publisher = {Springer Verlag, ETI-UNESCO}, organization = {Springer Verlag, ETI-UNESCO}, address = {New York}, issn = {Hyb: 3-540-14811-6}, url = {https://www.amazon.com/Mormyridae-Osteoglossomorpha-Biodiversity-Database-CD-ROM/dp/3540148116}, author = {Harder, W.} } @inbook {158, title = {Mormyridae}, booktitle = {Faune des poissons d{\textquoteright}eaux douces et saum{\^a}tres de l{\textquoteright}Afrique de l{\textquoteright}Ouest}, volume = {1}, year = {2003}, pages = {154-222}, publisher = {IRD/MNHN/MRAC}, organization = {IRD/MNHN/MRAC}, url = {http://www.ird.fr/editions/catalogue/ouvrage.php?livre=409}, author = {Bigorne, R.} } @inbook {179, title = {Mormyridae}, booktitle = {Faune des poissons d{\textquoteright}eaux douces et saum{\^a}tres de l{\textquoteright}Afrique de l{\textquoteright}Ouest = The fresh and brackish water fishes of West Africa}, series = {Faune tropicale 28}, year = {1990}, pages = {122-184}, publisher = {ORSTOM, MRAC}, organization = {ORSTOM, MRAC}, address = {Paris, Tervuren (Belgium)}, url = {http://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/Fau_trop/34060.pdf}, author = {Bigorne, R.}, editor = {L{\'e}v{\^e}que, C. and Paugy, D. and Teugels, G.G.} } @inbook {152, title = {12. Mormyridae}, booktitle = {The Fresh and Brackish Water Fishes of Lower Guinea, West-Central Africa}, series = {Collection Faune et Flore Tropicales 42}, volume = {1}, year = {2007}, pages = {220{\textendash}334}, publisher = {IRD}, organization = {IRD}, chapter = {12}, isbn = {978-2-7099-1621-9}, author = {Carl D Hopkins and S{\'e}bastien Lavou{\'e} and John P Sullivan}, editor = {Melanie L.J. Stiassny and Teugels, G.G. and Carl D Hopkins} }