Academic literature on the topic 'Mormyrinae'

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Journal articles on the topic "Mormyrinae"

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Sullivan, J. P., S. Lavoue, and C. D. Hopkins. "Molecular systematics of the african electric fishes (Mormyroidea: teleostei) and a model for the evolution of their electric organs." Journal of Experimental Biology 203, no. 4 (2000): 665–83. http://dx.doi.org/10.1242/jeb.203.4.665.

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We present a new molecular phylogeny for 41 species of African mormyroid electric fishes derived from the 12S, 16S and cytochrome b genes and the nuclear RAG2 gene. From this, we reconstruct the evolution of the complex electric organs of these fishes. Phylogenetic results are generally concordant with earlier preliminary molecular studies of a smaller group of species and with the osteology-based classification of Taverne, which divides the group into the Gymnarchidae and the Mormyridae, with the latter including the subfamilies Petrocephalinae (Petrocephalus) and Mormyrinae (all remaining ta
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Sullivan, John, Sebastien Lavoue, and Carl D. Hopkins. "Cryptomyrus: a new genus of Mormyridae (Teleostei, Osteoglossomorpha) with two new species from Gabon, West-Central Africa." ZooKeys 561 (February 8, 2016): 117–50. https://doi.org/10.3897/zookeys.561.7137.

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We use mitochondrial and nuclear sequence data to show that three weakly electric mormyrid fish specimens collected at three widely separated localities in Gabon, Africa over a 13-year period represent an unrecognized lineage within the subfamily Mormyrinae and determine its phylogenetic position with respect to other taxa. We describe these three specimens as a new genus containing two new species. Cryptomyrus, new genus, is readily distinguished from all other mormyrid genera by a combination of features of squamation, morphometrics, and dental attributes. Cryptomyrus ogoouensis, new species
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LAVOUÉ, SÉBASTIEN, JOHN P. SULLIVAN, and MATTHEW E. ARNEGARD. "African weakly electric fishes of the genus Petrocephalus (Osteoglossomorpha: Mormyridae) of Odzala National Park, Republic of the Congo (Lékoli River, Congo River basin) with description of five new species." Zootaxa 2600, no. 1 (2010): 1. http://dx.doi.org/10.11646/zootaxa.2600.1.1.

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Here we examine new collections of Petrocephalus species (Osteoglossomorpha: Mormyridae: Petrocephalinae) made within Odzala National Park in the Republic of the Congo (Lékoli River drainage, northwestern Congo River basin). We compare these collections to type material of all nominal Petrocephalus species described from the Congo basin and the adjacent Lower Guinea ichthyofaunal province. Based on morphology and electric signal characteristics we recognize eleven distinct species of Petrocephalus in these collections, including five new species described herein: Petrocephalus binotatus, Petro
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Animem, W. T., P.A Annune, and P. M. Akombo. "Determination of Physical and Nutritional Losses Caused By Pests on Selected Smoked Fish Families in Benue State, Nigeria." International Journal of Research and Review 7, no. 6 (2020): 185–91. https://doi.org/10.5281/zenodo.3952274.

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The study determined the physical and nutritional losses caused by pests on selected smoked fish families in 3 agricultural zones of Benue state. The selected fish families were Clariidae, Protopteridae, Characidae and Mormyridae and were weighed before and after 3 months storage at the end of each quarter of the year for 2 years and were subjected to proximate analysis. In zone A, Claridae, Protopteridae, Characidae and mormyridae had weight loss of 39.00%, 32.00%, 22.00% and 15.00% respectively. In zone B Clariidae, Protopteridae, Characidae and mormyridae had 43.00, 35.50, 23.50 and 18.00%
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Lavoué, Sébastien. "A new species of Petrocephalus Marcusen 1854 (Osteoglossomorpha: Mormyridae) from the Sanaga River basin, Cameroon." Zootaxa 2934 (December 31, 2011): 20–28. https://doi.org/10.5281/zenodo.204668.

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Sullivan, John P., and Carl D. Hopkins. "A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa." Zootaxa 847 (December 31, 2004): 1–23. https://doi.org/10.5281/zenodo.157189.

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Lavoué, Sébastien. "Petrocephalus leo, a new species of African electric fish (Osteoglossomorpha: Mormyridae) from the Oubangui River basin (Congo basin)." Zootaxa 4121, no. 3 (2016): 319–30. https://doi.org/10.11646/zootaxa.4121.3.6.

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Lavoué, Sébastien (2016): Petrocephalus leo, a new species of African electric fish (Osteoglossomorpha: Mormyridae) from the Oubangui River basin (Congo basin). Zootaxa 4121 (3): 319-330, DOI: 10.11646/zootaxa.4121.3.6
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Maake, Pholoshi A., Ofer Gon, and Ernst R. Swartz. "Descriptions of three new species of Marcusenius Gill, 1862 (Teleostei: Mormyridae) from South Africa and Mozambique." Zootaxa 3780, no. 3 (2014): 455–80. https://doi.org/10.11646/zootaxa.3780.3.2.

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Maake, Pholoshi A., Gon, Ofer, Swartz, Ernst R. (2014): Descriptions of three new species of Marcusenius Gill, 1862 (Teleostei: Mormyridae) from South Africa and Mozambique. Zootaxa 3780 (3): 455-480, DOI: 10.11646/zootaxa.3780.3.2
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Lavoué, Sébastien, Carl D. Hopkins, and André Kamdem Toham. "The Petrocephalus (Pisces, Osteoglossomorpha, Mormyridae) of Gabon, Central Africa, with the description of a new species." Zoosystema 26, no. 3 (2004): 511–35. https://doi.org/10.5281/zenodo.4525990.

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Lavoué, Sébastien, Hopkins, Carl D., Toham, André Kamdem (2004): The Petrocephalus (Pisces, Osteoglossomorpha, Mormyridae) of Gabon, Central Africa, with the description of a new species. Zoosystema 26 (3): 511-535, DOI: 10.5281/zenodo.4525990
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Kramer, L. Bernd, Pholoshi A. Maake, and Ofer Gon. "Electric organ discharges of South African Marcusenius species (Teleostei: Mormyridae) and their effectiveness as indicators of local species diversity." Zootaxa 4200, no. 3 (2016): 367–80. https://doi.org/10.11646/zootaxa.4200.3.2.

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Kramer, L. Bernd, Maake, Pholoshi A., Gon, Ofer (2016): Electric organ discharges of South African Marcusenius species (Teleostei: Mormyridae) and their effectiveness as indicators of local species diversity. Zootaxa 4200 (3): 367-380, DOI: 10.11646/zootaxa.4200.3.2
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Dissertations / Theses on the topic "Mormyrinae"

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LITEL, CATHERINE. "Rythmes de decharge de poissons electriques (mormyridae) : aspects structuraux et fonctionnels." Tours, 1997. http://www.theses.fr/1997TOUR4020.

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Les mormyres, poissons des eaux douces africaines, emettent en permanence des impulsions de quelques volts ayant un role d'electrolocalisation et d'electrocommunication. Ces impulsions, de forme et d'intensite constantes pour un individu donne, sont emises a des intervalles de temps (intervalles inter-impulsions) tres variables. Deux parametres ont ete utilises pour caracteriser ces rythmes de decharge : le nombre d'impulsions par seconde (cadence de decharge) et leur organisation temporelle. La nature, les causes, et les fonctions de la variabilite de ces rythmes font l'objet de notre etude.
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Graff, Christian. "Signaux électriques et comportement social du poisson à faibles décharges, Marcusenius macrolepidotus (mormyridae, teleostei)." Paris 11, 1986. http://www.theses.fr/1986PA112054.

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Cette thèse concerne Marcusenius macrolepidotus (mormyridae, teleostei), poisson émetteur de faibles impulsions électriques. Elle décrit son comportement social locomoteur et électrique. Les organes émetteurs et récepteurs d'électricité sont révélés histologiquement. Les mouvements de groupes sont observés en milieux variés puis quantifiés en conditions expérimentales permettant simultanément l'enregistrement de l'activité électrique du groupe et celle d'un individu dans le groupe. Les activités électriques sont analysées à l'ordinateur. L'activité électrique présente des stéréotypies propres
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Graff, Christian. "Signaux électriques et comportement social du poisson à faibles décharges, Marcusenius macrolepidotus, Mormyridae, teleostei." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37598011n.

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Feulner, Philine. "Adaptive radiation, speciation, and reproductive isolation in African weakly electric fish : (Genus Campylomormyrus, Mormyridae, Teleostei)." Phd thesis, [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=981698271.

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Al-Azemi, B. M. "Ultrastructural and morphometric studies on the gills of the freshwater fish Gnathonemus Petersii (family : Mormyridae) exposed to selected pollutants." Thesis, Royal Holloway, University of London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525080.

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The histopathological effects of three heavy metals, cyanide and atrazine on the gill tissues of the mormyrid fish, Gnathonemus petersii, were determined primarily by electron microscopy. Replicate samples of fish were exposed for 6 hours to acute and subacute concentrations of each toxicant in a continuous flow system comprising aerated, dechlorinated and heated water. Specific alterations to gill ultrastructure were found to be associated with each toxicant. Cadmium damage at 1.0 mg 1.1 was associated with the formation of large subepithelial spaces within the secondary lamellae and at 10.0
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Agmon, Eran. "A Computational Model of Adaptive Sensory Processing in the Electroreception of Mormyrid Electric Fish." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/291.

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Electroreception is a sensory modality found in some fish, which enables them to sense the environment through the detection of electric fields. Biological experimentation on this ability has built an intricate framework that has identified many of the components involved in electroreception's production, but lack the framework for bringing the details back together into a system-level model of how they operate together. This thesis builds and tests a computational model of the Electrosensory Lateral Line Lobe (ELL) in mormyrid electric fish in an attempt to bring some of electroreception's st
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Kaifosh, Patrick William John. "The neural circuit basis of learning." Thesis, 2016. https://doi.org/10.7916/D8416WXR.

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The astounding capacity for learning ranks among the nervous system’s most impressive features. This thesis comprises studies employing varied approaches to improve understanding, at the level of neural circuits, of the brain’s capacity for learning. The first part of the thesis contains investigations of hippocampal circuitry – both theoretical work and experimental work in the mouse Mus musculus – as a model system for declarative memory. To begin, Chapter 2 presents a theory of hippocampal memory storage and retrieval that reflects nonlinear dendritic processing within hippocampal pyr
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Muller, Salomon. "Learning in Multi-Layer Networks of the Brain." Thesis, 2021. https://doi.org/10.7916/d8-wh1n-c795.

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Simple circuits perform simple tasks. Complex circuits can perform more complicated tasks. This is true for artificial circuits and for brain circuits. As is known from artificial networks, a complexity that makes circuits substantially more powerful is distributing learning across multiple layers. In fact, most brain circuits in vertebrate systems are multi-layer circuits (but for few that perform simple reflexes) in which learning is distributed across layers. Despite the crucial contribution of learning in middle layer neurons to the output of the circuits they are embedded in, there is lit
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Feulner, Philine [Verfasser]. "Adaptive radiation, speciation, and reproductive isolation in African weakly electric fish: (Genus Campylomormyrus, Mormyridae, Teleostei) / von Philine Feulner." 2006. http://d-nb.info/981698271/34.

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Machnik, Peter [Verfasser]. "Allopatrische Differenzierung der Elektrokommunikation der Bulldog-Fische des südlichen Afrika (Marcusenius-macrolepidotus-Komplex, Mormyridae, Teleostei) / vorgelegt von Peter Machnik." 2009. http://d-nb.info/1005058830/34.

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Books on the topic "Mormyrinae"

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Litalema, Faustin Lokinda. L'Écologie et l'agrosociologie des Mormyridae de la biosphère de Yangambi au confluent Lomami - fleuve Congo, RDC. Éditions Blessing, 2021.

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Harder, W. Mormyridae and other Osteoglossomorpha. Springer, 2000.

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Graff, Christian. Signaux electriques et comportement social du poisson à faibles décharges, Marcusenius macrolepidotus (mormyridae, teleostei). 1986.

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Boyer, Frédéric, and Vincent Lebastard. Electric sensing for underwater navigation. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199674923.003.0019.

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Underwater navigation in turbid water for exploration in catastrophic conditions or navigation in confined unstructured environments is still a challenge for robotics. In these conditions, neither vision nor sonar can be used. Pursuing a bio-inspired approach in robotics, one can seek solutions in nature to solve this difficult problem. Several hundred fish species in families Gymnotidae and Mormyridae have developed an original sense well adapted to this situation: the electric sense. Gnathonemus petersii first polarizes its body with respect to an electric organ discharge located at the base
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Book chapters on the topic "Mormyrinae"

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Rooney, D. J., and T. Szabo. "Secondary Olfactory Projections in Gnathonemus petersii(Mormyridae): A Comparative Perspective." In The Forebrain in Nonmammals. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75367-1_1.

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