Respiratory characteristics of Hoplostenum littorale (Siluriformes, Callichthyidae)
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چکیده
منابع مشابه
Descriptive 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...
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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...
متن کاملCytogenetic analysis of five species of the subfamily Corydoradinae (Teleostei: Siluriformes: Callichthyidae)
In the present study, five callichthyid species belonging to the subfamily Corydoradinae were karyotyped: three species of Aspidoras and two of Corydoras. The three species of Aspidoras had the same diploid number, 2n = 46 chromosomes, similar karyotypic formulae, with most chromosomes metacentric or submetacentric, single interstitial Ag-NORs and C-band positive segments mainly found in the ce...
متن کاملAspidoras mephisto, new species: The first troglobitic Callichthyidae (Teleostei: Siluriformes) from South America
Aspidoras mephisto n. sp. is described from the Anésio-Russão cave system, upper Tocantins River basin, Goiás, Brazil. The species can be readily distinguished from its congeners by troglomorphic features and also by presenting the following combination of features: infraorbital 1 generally with well-developed ventral laminar; or moderately developed; poorly-developed serrations on posterior ma...
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ژورنال
عنوان ژورنال: Acta Amazonica
سال: 2001
ISSN: 0044-5967
DOI: 10.1590/1809-43922001312262