@article {gallant2011signal, title = {Signal variation and its morphological correlates in Paramormyrops kingsleyae provide insight into the evolution of electrogenic signal diversity in mormyrid electric fish}, journal = {Journal of Comparative Physiology A}, volume = {197}, year = {2011}, pages = {799{\textendash}817}, publisher = {Springer-Verlag}, abstract = {

We describe patterns of geographic variation in electric signal waveforms among populations of the mormyrid electric fish species Paramormyrops kingsleyae. This analysis includes study of electric organs and electric organ discharge (EOD) signals from 553 specimens collected from 12 localities in Gabon, West-Central Africa from 1998 to 2009. We measured time, slope, and voltage values from nine defined EOD \“landmarks\” and determined peak spectral frequencies from each waveform; these data were subjected to principal components analysis. The majority of variation in EODs is explained by two factors: the first related to EOD duration, the second related to the magnitude of the weak head-negative pre-potential, P0. Both factors varied clinally across Gabon. EODs are shorter in eastern Gabon and longer in western Gabon. Peak P0 is slightly larger in northern Gabon and smaller in southern Gabon. P0 in the EOD is due to the presence of penetrating-stalked (Pa) electrocytes in the electric organ while absence is due to the presence of non-penetrating stalked electrocytes (NPp). Across Gabon, the majority of P. kingsleyae populations surveyed have only individuals with P0-present EODs and Pa electrocytes. We discovered two geographically distinct populations, isolated from others by barriers to migration, where all individuals have P0-absent EODs with NPp electrocytes. At two sites along a boundary between P0-absent and P0-present populations, P0-absent and P0-present individuals were found in sympatry; specimens collected there had electric organs of intermediate morphology. This pattern of geographic variation in EODs is considered in the context of current phylogenetic work. Multiple independent paedomorphic losses of penetrating stalked electrocytes have occurred within five Paramormyrops species and seven genera of mormyrids. We suggest that this key anatomical feature in EOD signal evolution may be under a simple mechanism of genetic control, and may be easily influenced by selection or drift throughout the evolutionary history of mormyrids.

}, doi = {10.1007/s00359-011-0643-8}, url = {https://doi.org/10.1007/s00359-011-0643-8}, author = {Jason R. Gallant and Matthew E Arnegard and John P Sullivan and Bruce A Carlson and Carl D Hopkins} } @article {646, title = {Sur quelques poissons du Sud de la C{\^o}te d{\textquoteright}Ivoire}, journal = {Revue Suisse de Zoologie}, volume = {77}, year = {1970}, pages = {801-806}, chapter = {801}, abstract = {

La faune des poissons d\’eau douce de C\ôte d\’Ivoire est loin d\‘\être parfaitement connue puisque la pr\ésente collection permet d\’ajouter cinq esp\èces \à la liste de celles d\éj\à signal\ées de ce pays. Ces esp\èces sont: Marcusenius kingsleyae, Lapidarchus adonis, Notoglaizidium walkeri, Mjrophis plumbeus et Poropanchax nianni. Du bassin de l\&$\#$39;Agn\ébi sont signal\ées pour la premi\ère fois : Marcusenius kingsleyae, Notoglanidiuin walkeri, Afronandus sheljiukhoi et Pelmatochromis ansorgii. Le nombre des esp\èces continentales actuellement connues de ce bassin passe donc de 29 \à 33. Du Banco est signal\é pour la premi\ère fois Marcusenius kingsleyae; le nombre des esp\èces de ce cours d\‘eau passe donc de 11 \à 12.

}, url = {https://www.documentation.ird.fr/hor/fdi:04701}, author = {Daget, J. and de Rham, P.} } @article {588, title = {Genetic drift does not sufficiently explain patterns of electric signal variation among populations of the mormyrid electric fish Paramormyrops kingsleyae}, journal = {Evolution}, year = {2020}, month = {Jan-04-2021}, abstract = {

Communication signals serve crucial survival and reproductive functions. In Gabon, the widely distributed mormyrid fish Paramormyrops kingsleyae emits an electric organ discharge (EOD) signal with a dual role in communication and electrolocation that exhibits remarkable variation: populations of P. kingsleyae have either biphasic or triphasic EODs, a feature that characterizes interspecific signal diversity among the Paramormyrops genus. We quantified variation in EODs of 327 P. kingsleyae from nine populations and compared it to genetic variation estimated from microsatellite loci. We found no correlation between electric signal and genetic distances, suggesting that EOD divergence cannot be explained by drift alone. An alternative hypothesis is that EOD differences are used for mate discrimination, which would require P. kingsleyae be capable of differentiating between divergent EOD waveforms. Using a habituation-dishabituation assay, we found that P. kingsleyae can discriminate between biphasic and triphasic EOD types. Nonetheless, patterns of genetic and electric organ morphology divergence provide evidence for hybridization between these signal types. Although reproductive isolation with respect to signal type is incomplete, our results suggest that EOD variation in P. kingsleyae could be a cue for assortative mating.

}, doi = {10.1111/evo.13953}, url = {http://doi.wiley.com/10.1111/evo.13953https://onlinelibrary.wiley.com/doi/am-pdf/10.1111\%2Fevo.13953}, author = {Picq, Sophie and Sperling, Joshua and Catherine J. Cheng and Bruce A Carlson and Jason R. Gallant} } @article {554, title = {The genome and adult somatic transcriptome of the mormyrid electric fish Paramormyrops kingsleyae}, journal = {Genome Biology and Evolution}, year = {2017}, month = {Dec-12-2017}, abstract = {

Several studies have begun to elucidate the genetic and developmental processes underlying major vertebrate traits. Few of these traits have evolved repeatedly in vertebrates, preventing the analysis of molecular mechanisms underlying these traits comparatively. Electric organs have evolved multiple times among vertebrates, presenting a unique opportunity to understand the degree of constraint and repeatability of the evolutionary processes underlying novel vertebrate traits. As there is now a completed genome sequence representing south american electric eels, we were motivated to obtain genomic sequence from a linage that independently evolved electric organs to facilitate future comparative analyses of the evolution and development of electric organs. We report here the sequencing and de-novo assembly of the genome of the mormyrid Paramormyrops kingsleyae using short-read sequencing. In addition, we have completed a somatic transcriptome from 11 tissues to construct a gene expression atlas of predicted genes from this assembly, enabling us to identify candidate housekeeping genes as well as genes differentially expressed in the major somatic tissues of the mormyrid electric fish. We anticipate that this resource will greatly facilitate comparative studies on the evolution and development of electric organs and electroreceptors.

}, doi = {10.1093/gbe/evx265}, url = {http://academic.oup.com/gbe/advance-article/doi/10.1093/gbe/evx265/4731783}, author = {Jason R. Gallant and Losilla, Mauricio and Tomlinson, Chad and Warren, Wesley C} } @article {236, title = {Report on a collection of reptiles and fishes made by Miss. M. H. Kingsley during her travels on the Ogowe River and in Old Calabar}, journal = {Annals and Magazine of Natural History (Series 6)}, volume = {17}, number = {100}, year = {1896}, month = {03/1896}, pages = {261{\textendash}285, Pls. 13{\textendash}15}, author = {G{\"u}nther, Albert C. L. G.} } @article {133, title = {Mat{\'e}riaux pour la faune du Congo. Poissons nouveaux du Congo. Sixi{\`e}me Partie. Mormyres, Characins, Cyprins, Silures, Acanthopt{\'e}rygiens, Dipneustes}, journal = {Annales du Musee du Congo (Ser. Zoology)}, volume = {1}, number = {fasc. 5}, year = {1900}, month = {12/1900}, pages = {129-164, Pls. 48-56}, 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} } @article {608, title = {A revision of the genera and species of fishes of the family Mormyridae}, journal = {Proceedings of the General Meetings for Scientific Business of the Zoological Society of London}, volume = {1898}, number = {Part 4}, year = {1899}, pages = {775-821}, url = {http://www.biodiversitylibrary.org/item/97095$\#$page/919/mode/1up}, author = {George A. Boulenger} } @article {cite-key, title = {Fresh-water fishes of the Congo basin obtained by the American Museum Congo expedition, 1909-1915}, journal = {Bulletin of the American Museum of Natural History}, volume = {37}, number = {25}, year = {1917}, month = {Nov}, pages = {653-756, Pls. 64-83}, keywords = {Microstomatichthyoboras bashforddeani}, url = {http://digitallibrary.amnh.org/dspace/handle/2246/1069}, author = {Nichols, J.T. and Griscom, L.} } @article {134, title = {Electric signal variation among seven blunt-snouted Brienomyrus species (Teleostei: Mormyridae) from a riverine species flock in Gabon, Central Africa}, journal = {Environmental Biology of Fishes}, volume = {67}, year = {2003}, pages = {321-339}, author = {Matthew E Arnegard and Carl D Hopkins} } @article {132, title = {Morphological and osteological evidence for the generic position of Mormyrus kingsleyae in the genus Brienomyrus (Teleostei: Mormyridae)}, journal = {Copeia}, volume = {1998}, number = {1}, year = {1998}, pages = {199-204}, author = {Teugels, G.G. and Carl D Hopkins} } @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.} } @article {156, title = {R{\'e}vision syst{\'e}matique du genre Pollimyrus (Teleostei, Mormyridae) en Afrique de l{\textquoteright}Ouest}, journal = {Revue d{\textquoteright}Hydrobiologie Tropicale}, volume = {23}, number = {4}, year = {1990}, pages = {313-327}, chapter = {313}, author = {Bigorne, R.} } @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} }