@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 = {Peterson, Rose and Sullivan, John and Pirro, Stacy} } @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 {537, title = {Behavioral and Single-Neuron Sensitivity to Millisecond Variations in Temporally Patterned Communication Signals}, journal = {Journal of Neuroscience}, volume = {36}, year = {2016}, month = {Feb-16-20162220}, pages = {8985 - 9000}, abstract = {

In many sensory pathways, central neurons serve as temporal filters for timing patterns in communication signals. However, how a population of neurons with diverse temporal filtering properties codes for natural variation in communication signals is unknown. Here we addressed this question in the weakly electric fish Brienomyrus brachyistius, which varies the time intervals between successive electric organ discharges to communicate. These fish produce an individually stereotyped signal called a scallop, which consists of a distinctive temporal pattern of \∼8\–12 electric pulses. We manipulated the temporal structure of natural scallops during behavioral playback and in vivo electrophysiology experiments to probe the temporal sensitivity of scallop encoding and recognition. We found that presenting time-reversed, randomized, or jittered scallops increased behavioral response thresholds, demonstrating that fish\&$\#$39;s electric signaling behavior was sensitive to the precise temporal structure of scallops. Next, using in vivo intracellular recordings and discriminant function analysis, we found that the responses of interval-selective midbrain neurons were also sensitive to the precise temporal structure of scallops. Subthreshold changes in membrane potential recorded from single neurons discriminated natural scallops from time-reversed, randomized, and jittered sequences. Pooling the responses of multiple neurons improved the discriminability of natural sequences from temporally manipulated sequences. Finally, we found that single-neuron responses were sensitive to interindividual variation in scallop sequences, raising the question of whether fish may analyze scallop structure to gain information about the sender. Collectively, these results demonstrate that a population of interval-selective neurons can encode behaviorally relevant temporal patterns with millisecond precision.

SIGNIFICANCE STATEMENT The timing patterns of action potentials, or spikes, play important roles in representing information in the nervous system. However, how these temporal patterns are recognized by downstream neurons is not well understood. Here we use the electrosensory system of mormyrid weakly electric fish to investigate how a population of neurons with diverse temporal filtering properties encodes behaviorally relevant input timing patterns, and how this relates to behavioral sensitivity. We show that fish are behaviorally sensitive to millisecond variations in natural, temporally patterned communication signals, and that the responses of individual midbrain neurons are also sensitive to variation in these patterns. In fact, the output of single neurons contains enough information to discriminate stereotyped communication signals produced by different individuals.

}, issn = {0270-6474}, doi = {10.1523/JNEUROSCI.0648-16.2016}, url = {http://www.jneurosci.org/cgi/doi/10.1523/JNEUROSCI.0648-16.2016}, author = {Baker, C. A. and Ma, L. and Casareale, C. R. and Bruce A. Carlson} } @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 {688, title = {On the West African Genus Hemichromis and Descriptions of New Species in the Museums of the Academy and Smithsonian Institution}, journal = {Proceedings of the Academy of Natural Sciences of Philadelphia}, volume = {14}, year = {1862}, pages = {134{\textendash}139}, url = {http://www.jstor.org/stable/4059440}, author = {Gill, T.N.} } @article {225, title = {New fishes from the Gaboon and Gold Coast}, journal = {Annals and Magazine of Natural History (Series 3)}, volume = {20}, number = {116}, year = {1867}, month = {08/1867}, pages = {110{\textendash}117; Pls 2, 3.}, author = {G{\"u}nther, Albert C. L. G.} } @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 {239, title = {On the fishes collected by Dr. W. J. Ansorge in the Niger Delta}, journal = {Proceedings of the General Meetings for Scientific Business of the Zoological Society of London 1901}, volume = {1}, year = {1901}, month = {06/1901}, pages = {4{\textendash}10, Pls. 2{\textendash}4}, author = {George A. Boulenger} } @article {446, title = {Sur une seconde collection de poissons recueillis par M. E. Haug {\`a} Ngomo}, journal = {Bulletin de la Soci{\'e}t{\'e} Philomatique de Paris}, volume = {11}, year = {1908}, pages = {184-190}, author = {Pellegrin, J.} } @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} } @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 {262, title = {Zoological results of the George Vanderbilt African Expedition of 1934. Part III,{\textendash}The fresh water fishes}, journal = {Proceedings of the Academy of Natural Sciences of Philadelphia}, volume = {88}, year = {1936}, month = {07/1936}, pages = {243{\textendash}335}, abstract = {

The Academy is fortunate in securing the very interesting collection obtained by this expedition. Considering the wide range of localities or stations across transcontinental Africa, of which 39 are listed in part 1 of the present series of papers,\’ only 7 yielded fishes. These are: (13) Athi River Crossing, (17) Kitala, (23) Saidi\’s Village, (24) Vube, (26) Eki- bondo\’s Village, (27) Fort Sibut and (33) Nola. Other smaller lots of materials were later received from 30 kilometers east of Kribi, Cameroons, and Batangafo, Chad Basin. The specimens number nearly 3000, representing 115 species, of which 10 are described as new genera or subgenera and 36 as new species or sub- species. This is surely a remarkable showing, especially in view of the comparatively short amount of time available and the mobility of the expedition. To Mr. George Vanderbilt is due special acknowledgment for his per- sonal interest in the collecting of the specimens, and amassing comprehen- sive series for the museum of the Academy.

}, author = {Fowler, H.W.} } @article {913, title = {The Fresh-water Fishes of Liberia}, journal = {Proceedings of the United States National Museum}, volume = {92}, number = {3152}, year = {1942}, pages = {301{\textendash}348. Pls. 35-36}, chapter = {301}, url = {http://biodiversitylibrary.org/page/15767025}, author = {Leonard P Schultz} } @article {157, title = {Les genres Brienomyrus et Isichthys (Pisces, Mormyridae) en Afrique de l{\textquoteright}Ouest}, journal = {Revue d{\textquoteright}Hydrobiologie Tropicale}, volume = {22}, number = {4}, year = {1989}, pages = {317-338}, chapter = {317}, author = {Bigorne, R.} } @article {128, title = {Phylogenetic utility of the first two introns of the S7 ribosomal protein gene in African electric fishes (Mormyroidea: Teleostei) and congruence with other molecular markers}, journal = {Biological Journal of the Linnean Society}, volume = {78}, year = {2003}, pages = {273-292}, keywords = {Mormyridae}, doi = {http://www.blackwell-synergy.com/doi/abs/10.1046/j.1095-8312.2003.00170.x}, url = {http://www.blackwell-synergy.com/doi/abs/10.1046/j.1095-8312.2003.00170.x}, author = {S{\'e}bastien Lavou{\'e} and John P. Sullivan and Carl D. Hopkins} } @article {127, title = {Molecular systematics of the African electric fishes (Mormyroidea: Teleostei) and a model for the evolution of their electric organs.}, journal = {Journal of Experimental Biology}, volume = {203}, number = {4}, year = {2000}, pages = {665-683}, keywords = {Mormyridae}, author = {John P. Sullivan and S{\'e}bastien Lavou{\'e} and Carl D. Hopkins} } @article {154, title = {Molecular insights into the phylogeny of mormyriform fishes and the evolution of their electric organs}, journal = {Brain Behavior and Evolution}, volume = {49}, year = {1997}, pages = {324-351}, chapter = {324}, author = {Alves-Gomes, J. and Carl D. Hopkins} } @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 {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.} } @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 {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} } @article {836, title = {Differential expression of genes and proteins between electric organ and skeletal muscle in the mormyrid electric fish Brienomyrus brachyistius}, journal = {Journal of Experimental Biology}, volume = {215}, year = {2012}, month = {07/2012}, pages = {2479 - 2494}, abstract = {

Electric organs (EOs) have evolved independently in vertebrates six times from skeletal muscle (SM). The transcriptional changes accompanying this developmental transformation are not presently well understood. Mormyrids and gymnotiforms are two highly convergent groups of weakly electric fish that have independently evolved EOs: while much is known about development and gene expression in gymnotiforms, very little is known about development and gene expression in mormyrids. This lack of data limits prospects for comparative work. We report here on the characterization of 28 differentially expressed genes between SM and EO tissues in the mormyrid Brienomyrus brachyistius, which were identified using suppressive subtractive hybridization (SSH). Forward and reverse SSH was performed on tissue samples of EO and SM resulting in one cDNA library enriched with mRNAs expressed in EO, and a second library representing mRNAs unique to SM. Nineteen expressed sequence tags (ESTs) were identified in EO and nine were identified in SM using BLAST searching of Danio rerio sequences available in NCBI databases. We confirmed differential expression of all 28 ESTs using RT-PCR. In EO, these ESTs represent four classes of proteins: (1) ion pumps, including the - and -subunits of Na+/K+-ATPase, and a plasma membrane Ca2+-ATPase; (2) Ca2+-binding protein S100, several parvalbumin paralogs, calcyclin-binding protein and neurogranin; (3) sarcomeric proteins troponin I, myosin heavy chain and actin-related protein complex subunit 3 (Arcp3); and (4) the transcription factors enhancer of rudimentary homolog (ERH) and myocyte enhancer factor 2A (MEF2A). Immunohistochemistry and western blotting were used to demonstrate the translation of seven proteins (myosin heavy chain, Na+/K+-ATPase, plasma membrane Ca2+-ATPase, MEF2, troponin and parvalbumin) and their cellular localization in EO and SM. Our findings suggest that mormyrids express several paralogs of muscle-specific genes and the proteins they encode in EOs, unlike gymnotiforms, which may post-transcriptionally repress several sarcomeric proteins. In spite of the similarity in the physiology and function of EOs in mormyrids and gymnotiforms, this study indicates that the mechanisms of development in the two groups may be considerably different.

}, issn = {1477-9145}, doi = {10.1242/jeb.063222}, author = {Jason R. Gallant and Carl D. Hopkins and Deitcher, D. L.} } @article {853, title = {Differential expression of genes and proteins between electric organ and skeletal muscle in the mormyrid electric fish Brienomyrus brachyistius}, journal = {Journal of Experimental Biology}, volume = {215}, year = {2012}, month = {07/2012}, pages = {2479 - 2494}, abstract = {

Electric organs (EOs) have evolved independently in vertebrates six times from skeletal muscle (SM). The transcriptional changes accompanying this developmental transformation are not presently well understood. Mormyrids and gymnotiforms are two highly convergent groups of weakly electric fish that have independently evolved EOs: while much is known about development and gene expression in gymnotiforms, very little is known about development and gene expression in mormyrids. This lack of data limits prospects for comparative work. We report here on the characterization of 28 differentially expressed genes between SM and EO tissues in the mormyrid Brienomyrus brachyistius, which were identified using suppressive subtractive hybridization (SSH). Forward and reverse SSH was performed on tissue samples of EO and SM resulting in one cDNA library enriched with mRNAs expressed in EO, and a second library representing mRNAs unique to SM. Nineteen expressed sequence tags (ESTs) were identified in EO and nine were identified in SM using BLAST searching of Danio rerio sequences available in NCBI databases. We confirmed differential expression of all 28 ESTs using RT-PCR. In EO, these ESTs represent four classes of proteins: (1) ion pumps, including the \α- and \β-subunits of Na(+)/K(+)-ATPase, and a plasma membrane Ca(2+)-ATPase; (2) Ca(2+)-binding protein S100, several parvalbumin paralogs, calcyclin-binding protein and neurogranin; (3) sarcomeric proteins troponin I, myosin heavy chain and actin-related protein complex subunit 3 (Arcp3); and (4) the transcription factors enhancer of rudimentary homolog (ERH) and myocyte enhancer factor 2A (MEF2A). Immunohistochemistry and western blotting were used to demonstrate the translation of seven proteins (myosin heavy chain, Na(+)/K(+)-ATPase, plasma membrane Ca(2+)-ATPase, MEF2, troponin and parvalbumin) and their cellular localization in EO and SM. Our findings suggest that mormyrids express several paralogs of muscle-specific genes and the proteins they encode in EOs, unlike gymnotiforms, which may post-transcriptionally repress several sarcomeric proteins. In spite of the similarity in the physiology and function of EOs in mormyrids and gymnotiforms, this study indicates that the mechanisms of development in the two groups may be considerably different.

}, issn = {1477-9145}, doi = {10.1242/jeb.063222}, author = {Jason R. Gallant and Carl D. Hopkins and Deitcher, D. L.} }