The melanocortin receptors (MCRs) and the MRAP accessory proteins belong to distinct gene families that are unique to the chordates. During the radiation of the chordates, the melancortin-2 receptor paralog (MC2R) and the MRAP1 paralog (melanocortin-2 ...
Robert M. Dores, Emilia Chapa
doaj +1 more source
Afferent connections of the valvula cerebelli in two teleosts, the common goldfish and the green sunfish [PDF]
The afferent connections of the valvula cerebelli were examined in one cypriniform teleost (Carassius auratus) and one perciform teleost (Lepomis cyanellus) with the use of horseradish peroxidase as a retrograde tracer.
Bell +43 more
core +1 more source
Basal jawed vertebrate phylogeny inferred from multiple nuclear DNA-coded genes
Background Phylogenetic analyses of jawed vertebrates based on mitochondrial sequences often result in confusing inferences which are obviously inconsistent with generally accepted trees.
Ishida Osamu +6 more
doaj +1 more source
Simultaneously operating threats cannot predict extinction risk
Species afflicted by multiple threats are thought to face greater extinction risk. However, it is not known whether multiple threats operate antagonistically, additively, or synergistically, or whether they vary across different taxonomic and spatial ...
Aaron C. Greenville +5 more
doaj +1 more source
Industrial application of fish cartilaginous tissues
Cartilage is primarily composed of proteoglycans and collagen. Bioactive compounds derived from animal cartilage, such as chondroitin sulfate and type II collagen, have multiple bioactivities and are incorporated in popular health products. The aging population and increases in degenerative and chronic diseases will stimulate the rapid growth of market
Li, Wen, Ura, Kazuhiro, Takagi, Yasuaki
openaire +4 more sources
Ontogeny of the osteocranium in the African catfish, Clarias gariepinus burchell (1822) (Siluriformes: Clariidae): Ossification sequence as a response to functional demands [PDF]
A
Adriaens, Dominique, Verraes, Walter
core +2 more sources
The self-organization of genomes [PDF]
Menzerath-Altmann law is a general law of human language stating, for instance, that the longer a word, the shorter its syllables. With the metaphor that genomes are words and chromosomes are syllables, we examine if genomes also obey the law.
Ferrer Cancho, Ramon +1 more
core +2 more sources
Background The cartilaginous fishes diverged from other jawed vertebrates ~ 450 million years ago (mya). Despite this key evolutionary position, the only high-quality cartilaginous fish genome available is for the elephant shark (Callorhinchus milii), a ...
Anthony K. Redmond +2 more
doaj +1 more source
Connections of the corpus cerebelli in the green sunfish and the common goldfish [PDF]
Examination of the connections of the corpus cerebelli in one perciform (Lepomis cyanellus) and one cypriniform teleost (Carassius auratus) reveal that ipsilateral afferent connections in both species arise from an anterior group of nuclei in the ...
Northcutt, R. Glenn, Wullimann, Mario F.
core +1 more source
Características histológicas del útero de Sympterygia acuta (Garman, 1877) y Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes; Rajidae) [PDF]
Los condrictios constituyen un clado sumamente conservado y vulnerable a la explotación, que ha cobrado una importancia creciente en los últimos años. Sin embargo, existe poca información sobre los aspectos morfológicos relacionados con la reproducción ...
Díaz Andrade, María Constanza +2 more
core +1 more source

