Les dents des sous-familles Hypostominae et Ancistrinae (Pisces, Siluriformes, Loricariidae) et leur valeur taxonomique

Müller, Sandra Mara Torres; Weber, Claude

doi:10.5962/bhl.part.79851

Cited by 34 publications

(43 citation statements)

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“…Eigenmann (1922) described Cheiridodus and separated the genus from Cochliodon based on the presence of a small medial tooth cusp (vs. medial cusp absent). Most loricariids have bicuspid teeth (Muller & Weber 1992), and the presence of a mesial cusp represents a plesiomorphic characteristic within the Loricariidae. Cochliodon do actually have a small mesial cusp, but this cusp is occasionally fused into the lateral cusp and visible as a darker, thicker ridge on the tooth (pers.…”

Section: Introductionmentioning

confidence: 99%

The species of the Hypostomus cochliodon group (Siluriformes: Loricariidae)

Armbruster

2003

Zootaxa

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The Hypostomus cochliodon group consists of eight species that were formerly recognized as Cochliodon Kner: H. cochliodon Kner, H. hondae (Regan), H. levis (Pearson), H. oculeus (Fowler), H. plecostomoides (Eigenmann), H. pospisili (Schultz; a synonym of H. hondae), H. pyrineusi (Miranda-Ribeiro), and H. taphorni (Lilyestrom) and four additional species described herein: H. ericius, H. hemicochliodon, H. pagei, and H. sculpodon. The species occur in four phenetic groups: the intermediate group of H. hemicochliodon and H. sculpodon that appear to be transitional species between other Hypostomus and the H. cochliodon group in terms of diet and tooth shape, a monotypic group containing H. cochliodon, a group characterized by an odontodeless opercle that contains H. ericius, H. levis, H. oculeus, H. pyrineusi, and H. taphorni, and an undifferentiated northern group that contains H. hondae, H. pagei, and H. plecostomoides.

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Section: Introductionmentioning

confidence: 99%

The species of the Hypostomus cochliodon group (Siluriformes: Loricariidae)

Armbruster

2003

Zootaxa

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“…The tooth number in the mandibular ramus is highly variable among Hypostomus (Muller & Weber, 1992). In the upper rio Paraná basin, Hypostomus ternetzi (n=20, dentary: 40-126 teeth, mean 83.7; premaxilla: 39-127 teeth, mean 79.0) show a high number of teeth per mandibular ramus.…”

Section: Discussionmentioning

confidence: 99%

“…Tooth shape is also variable among hypostomines, and some extreme forms characterize taxa (Muller & Weber, 1992). The presence of teeth with two symmetrical cusps in Hypostomus multidens is a feature absent in all known species of Hypostomus, whose teeth have two asymmetrical cusps.…”

Section: Discussionmentioning

confidence: 99%

A new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the upper rio Paraná basin, Southern Brazil

2007

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A new species of Hypostomus with large and spaced light roundish spots is described from the upper rio Paraná basin. Hypostomus multidens new species is distinguished from all remaining congeners with light spots on a darker background by two independent characters: the presence of teeth with two symmetrical cusps, and a high tooth number in each dentary (122-267, mean 196.8) and premaxilla (115-260, mean 190.8).Uma nova espécie de Hypostomus com pintas claras grandes e espaçadas é descrita para a bacia do alto rio Paraná. Hypostomus multidens nova espécie distingue-se de todas as outras congêneres com pintas claras em um fundo escuro por duas características independentes: a presença de dentes com cúspides simétricas, e um elevado número de dentes em cada dentário (122-267, média 196.8) e pré-maxilar (115-260, média 190.8).

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“…The more expanded lip of E. pantherinus and the presence of accessory unicuspid teeth internally to the main series in the premaxillary and dentary (REIS & SCHAEFER, 1992) make this species apt to explore benthonic resources, differently of the sympatric species P. hystrix, which feed predominantly on detritus possibly because of the lack of accessory teeth and the less expanded shape of the lip (PEREIRA & REIS, 2002). Several studies describe the diversity in number and size of teeth in Loricariidae (MULLER & WEBER, 1992;DELARIVA & AGOSTINHO, 2001;GEERINCKX et al, 2007), showing clearly the possibility of these species to explore different food resources because of their morphological attributes related to feeding behavior.…”

Section: Resultsmentioning

confidence: 99%

Comparative dietary analysis of Eurycheilichthys pantherinus and Pareiorhaphis hystrix: two Loricariidae species (Ostariophysi, Siluriformes) from Campos Sulinos biome, southern Brazil

Dias

Fialho

2011

Iheringia, Sér. Zool.

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ABSTRACT. This work was carried out in Marco river, São José dos Ausentes municipality, state of Rio Grande do Sul, southern Brazil. This region is located within the Campos Sulinos biome, an area of great biological importance due to its high diversity and endemism of fish. The feeding habits and food overlap between Eurycheilichthys pantherinus (Reis & Schaefer, 1992) (n=108) and Pareiorhaphis hystrix Pereira & Reis, 2002 (n=60) are described. Monthly samples were obtained between September 2000 and July 2001 with dipnets using the kick sampling technique. Stomach contents were analyzed based on frequency of occurrence, volumetric frequency and index of alimentary importance. The level of dietary specialization and food overlap were determined by the Levins measure and the Morisita index, respectively. Eurycheilichthys pantherinus fed mainly on immature aquatic insects, such as Dipterans and Ephemeropterans, and was classified as insectivore. Pareiorhaphis hystrix fed mainly on detritus associated with small amounts of aquatic insects, and was classified as detritivore. Species are clearly segregated by the use of food resources in Marco River. Their diets did not overlap and the differences observed in their feeding habits probably contribute for their coexistence.

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Les dents des sous-familles Hypostominae et Ancistrinae (Pisces, Siluriformes, Loricariidae) et leur valeur taxonomique

Cited by 34 publications

References 0 publications

The species of the Hypostomus cochliodon group (Siluriformes: Loricariidae)

The species of the Hypostomus cochliodon group (Siluriformes: Loricariidae)

A new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the upper rio Paraná basin, Southern Brazil

Comparative dietary analysis of Eurycheilichthys pantherinus and Pareiorhaphis hystrix: two Loricariidae species (Ostariophysi, Siluriformes) from Campos Sulinos biome, southern Brazil

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