IS Callichtys LINNÉ (OSTARIOPHISY, SILURIFORMES, CALLICHTHYIDAE) A MONOTYPIC GENUS?
نویسندگان
چکیده
منابع مشابه
Systematic revision of the formerly monotypic genus Tanganikallabes (Siluriformes: Clariidae)
The monotypic genus Tanganikallabes, endemic to Lake Tanganyika, is a poorly known member of the family Clariidae. Examination of 142 specimens housed in museum collections has revealed the presence of at least two additional species in this genus. Tanganikallabes alboperca sp. nov. is distinguished from all congeners by the length of its pelvic fins, the presence of a depigmented vertical bar ...
متن کاملDescriptive osteology of Corydoras aeneus (Siluriformes: Callichthyidae)
Both the cranial and postcranial osteology of Corydoras aeneus (Gill, 1858) is described based on the study of five adult specimens. The results were compared to the condition described for other loricarioid fishes. Most results corresponded with the expected pattern based on studies dealing with parts of the callichthyid osteology, although some differences were observed. One of these differen...
متن کاملIs Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus?
The combination of DNA barcodes and geometric morphometrics is useful to discriminate taxonomically controversial species, providing more precise estimates of biodiversity. Therefore, our goal was to assess the genetic and morphometric diversity in Nematocharax, a controversial monotypic and sexually dimorphic genus of Neotropical fish, based on sequencing of cytochrome c oxidase subunit I (COI...
متن کاملHistochemical differences along the intestine of Corydoras paleatus (Siluriformes: Callichthyidae).
The Neotropical catfish Corydoras paleatus is a facultative air-breather and the caudal half of the intestine is involved in gas exchange. In South America, air-breathing fishes are found in tropical or sub-tropical freshwaters where the probability of hypoxia is high. The aim of this study was to characterize by traditional histochemical and lectinhistochemical methods the pattern of carbohydr...
متن کاملMolecular phylogeny of the armored catfish family Callichthyidae (Ostariophysi, Siluriformes).
The family Callichthyidae comprises eight genera of fishes widely distributed across the Neotropical region. In the present study, sequences of the mitochondrial genes 12S rRNA, 16S rRNA, ND4, tRNAHis, and tRNASer were obtained from 28 callichthyid specimens. The sample included 12 species of Corydoras, three species of Aspidoras, two species of Brochis, Dianema, Lepthoplosternum, and Megalechi...
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ژورنال
عنوان ژورنال: Acta Amazonica
سال: 1993
ISSN: 0044-5967
DOI: 10.1590/1809-43921993233314