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|a (JST)4064852
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|a DE-627
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|c DE-627
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|a eng
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|a Lundberg, John G.
|e verfasserin
|4 aut
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| 245 |
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|a A Review of Rhabdolichops (Gymnotiformes, Sternopygidae), a Genus of South American Freshwater Fishes, with Descriptions of Four New Species
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|c 1986
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
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|a Online-Ressource
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|a The sternopygid fish genus Rhabdolichops Eigenmann and Allen 1942 is reviewed. The homology of the unusual gill rakers of Rhabdolichops is discussed. Characters presented as evidence for the monophyly of the genus are: separate foramina in the prootic for two facial nerve rami, medial placement of the extrascapula bone, enlarged infraorbitals five and six, large terminal or nearly terminal mouth, modally two rib-like bones associated with anterior hemal spines, narrow postcleithral process, reduced scalation on back and sides, and distinctive gill raker structure. An analysis is presented of the phylogenetic relationships of Rhabdolichops to other confamilial genera, and for the interrelationships of its member species. Rhabdolichops, Distocyclus, and Eigenmannia form an unresolved monophyletic sister group to Archolaemus, and these four genera are the sister group to Sternopygus. Six species of Rhabdolichops are recognized, of which four are described as new: R. electrogrammus n. sp., R. zareti n. sp., R. eastwardi n. sp., R. stewarti n. sp., R. caviceps (Fernández-Yépez) 1968, and R. troscheli (Kaup) 1856. Guichthys Fernández-Yépez 1968 is treated as a synonym of Rhabdolichops. R. longicaudatus Eigenmann and Allen 1942 and Sternopygus axillaris Günther 1864 are recognized as junior synonyms of R. troscheli. A key to species is given. Rhabdolichops are most often found in flowing, deep channel riverine waters but occur also in lagoons near rivers. The genus is known only from the Orinoco and Amozon basins. Most species are zooplanktivorus; R. electrogrammus also includes insects in its diet. /// En este trabajo se presenta una revisión sistemática del género Rhabdolichops Eigenmann y Allen 1942 (Sternopygidae). Se discute también la anatomía comparada y la homología de las peculiares branquispinas del género. Se estudian varios caracteres que evidencian la monofilia del género: foramenes separados en el proótico para permitir el paso de las dos ramas del séptimo par de nervios cranianos (facial); posición medial del extrascapular; ensanchamiento de los huesos infraorbitarios quinto y sexto; boca grande, con una posición terminal o subterminal; asociación de dos huesos, con forma de costillas, con las espinas hemales anteriores en la mayoría de los ejemplares; proceso posterior del cleitro angosto; ausencia de escamas en la región dorsal y anterior del cuerpo; estructura distintiva de las branquispinas. Se analizan las relaciones filogenéticas de Rhabdolichops con otros géneros de la familia y entre las especies integrantes del mismo. Rhabdolichops, Distocyclus, y Eigenmannia forman un grupo "sister" monofilético (no resuelto aún) de Archolaemus, y estos cuatro géneros son el grupo "sister" de Sternopygus. Se reconocen seis especies de Rhabdolichops, de las cuales cuatro son nuevas para la ciencia: R. electrogrammus especie nueva, R. zareti especie nueva, R. eastwardi especie nueva, R. stewarti especie nueva, R. caviceps (Fernández Yépez) 1968, y R. troscheli (Kaup) 1856. Guichthys Fernández Yépez 1968, se considera como sinónimo de Rhabdolichops. R. longicaudatus Eigenmann y Allen 1942 y Sternopygus axillaris Günther 1870, se aceptan como sinónimos de R. troscheli.
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|a Copyright 1986 Academy of Natural Sciences of Philadelphia
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| 650 |
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4 |
|a Anatomy
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| 650 |
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4 |
|a Gill rakers
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| 650 |
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|a Gymnotiformes
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| 650 |
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4 |
|a Osteology
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| 650 |
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|a Phylogenetic relationships
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| 650 |
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|a Rhabdolichops
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| 650 |
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|a South America
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| 650 |
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|a Sternopygidae
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| 650 |
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|a Systematics
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| 650 |
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|a Biological sciences
|x Biology
|x Anatomy
|x Body tissues
|x Connective tissues
|x Bones
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| 650 |
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|a Applied sciences
|x Engineering
|x Transportation
|x Transportation engineering
|x Navigation
|x Navigational aids
|x Buoys
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| 650 |
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|a Biological sciences
|x Biology
|x Anatomy
|x Body tissues
|x Connective tissues
|x Bones
|x Spine
|x Vertebrae
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| 650 |
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|a Biological sciences
|x Biology
|x Anatomy
|x Body tissues
|x Connective tissues
|x Bones
|x Skull
|x Facial bones
|x Jaw
|x Maxilla
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Cytology
|x Cell biology
|x Cells
|x Animal cells
|x Chromatophores
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| 650 |
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4 |
|a Business
|x Industry
|x Industrial sectors
|x Manufacturing industries
|x Consumer goods industries
|x Clothing industry
|x Clothing
|x Clothing accessories
|x Jewelry
|x Pectorals
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Zoology
|x Animal anatomy
|x Animal morphology
|x Animal organs
|x Papillae
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Landforms
|x Fluvial landforms
|x Alluvial landforms
|x Alluvial plains
|x River deltas
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Zoology
|x Animals
|x Fish
|x Freshwater fishes
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Anatomy
|x Body regions
|x Head
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| 655 |
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4 |
|a research-article
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| 700 |
1 |
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|a Mago-Leccia, Francisco
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Proceedings of the Academy of Natural Sciences of Philadelphia
|d Academy of Natural Sciences of Philadelphia, 1841
|g 138(1986), 1, Seite 53-85
|w (DE-627)477991068
|w (DE-600)2174963-2
|x 19385293
|7 nnns
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| 773 |
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|g volume:138
|g year:1986
|g number:1
|g pages:53-85
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|u https://www.jstor.org/stable/4064852
|3 Volltext
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|d 138
|j 1986
|e 1
|h 53-85
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