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A quantitative study of morphological and histological changes in the skeleton of Salmo salar during its anadromous migration
The histological analysis of the vertebrae showed that bone compacity and number of trabeculae vary depending on their localization on the vertebral axis, which represents an important source of calcium and other elements during anadromous migration in Atlantic salmon. Expand
Comparative study of lower pharyngeal jaw structure in two phenotypes of Astatoreochromis alluaudi (teleostei: Cichlidae)
Examination of wild‐caught (snail‐eating) fish and specimens experimentally reared on soft food for differences in bone structure in their lower pharyngeal jaw reveals differing growth trajectories, indicating that porosity does not change on one growth trajectory or from one phenotype to another. Expand
Middle Maastrichtian vertebrates (fishes, amphibians, dinosaurs and other reptiles, mammals) from Pajcha Pata (Bolivia). Biostratigraphic, palaeoecologic and palaeobiogeographic implications
The Pajcha Pata fossil locality in south central Bolivia, in the upper part of the Lower Member of the El Molino Formation, is the first late Cretaceous fauna in South America which has yielded, inExpand
The Concept of Bone Tissue in Osteichthyes
Each of the bone and bone-derived tissues of the aforementioned continuum represents the outcome of developmental and functional constraints, which appear to be more diverse in Osteichthyes than in Tetrapoda. Expand
Demineralization of the vertebral skeleton in Atlantic salmon Salmo salar L. during spawning migration.
It is hypothesized that mineral decrease in vertebrae may be the result of a halastasic demineralization of the vertebral tissues. Expand
Diversification in Polypteriformes and Special Comparison With the Lepisosteiformes
The lepisosteiforms appear to show a rapid radiation of post-Palaeozoic clades immediately upon origination, while the polypteriforms represent a counter-example with their sudden diversification and their sudden acquisition of several ‘key innovations’. Expand
Phylogeny of the Amphiliidae (Teleostei : Siluriformes)
The Amphiliidae is not a monophyletic group and must now be restricted to the genera Amphilius and Paramphilius; the two subfamilies Amphiliinee and Doumeinae are separated by the sisorids Euchiloglanis and Glyptothorax; and no synapomorphies were found for the subfamily Amphiliinae. Expand
Reproductive biology of the conger eel from the south coast of Brittany, France and comparison with the Europe eel
The gonadosomatic indices of female conger eel Conger conger, aged between 2 and 11 years postmetamorphosis, ranged between 0.04 and 4.78 and were correlated with both age and body length, indicating that this species probably spawns in deeper oceanic waters. Expand
Osteoclasts in teleost fish: Light-and electron-microscopical observations
Electronmicroscopical observations reveal that teleost osteoclast show features similar to those of higher vertebrate osteoclasts, c.g., the presence of a ruffled border and the occurrence of numerous vacuoles, lysosomes and mitochondria. Expand