Results 131 to 140 of about 6,577 (179)

Immunoglobulin T genes in Actinopterygii

Fish & Shellfish Immunology, 2021
In teleost fishes, there are three immunoglobulin isotypes named immunoglobulin M (IgM), D (IgD), and T (IgT). IgT was the last to be described in teleost fishes, and it is specific to them. From recent fish genomes, we identified and studied the immunoglobulin heavy chain genes in Actinopterygii.
Serafin, Mirete-Bachiller, David N, Olivieri, Francisco, Gambón-Deza   +2 more
openaire   +2 more sources

A Bioinformatics Analysis of the CatSper Channel in the Class Actinopterygii

Comparative Biochemistry and Physiology Part A, Molecular & Integrative Physiology, 2022
The regulation of sperm motility is controlled by several variables, including mainly ion concentrations. In fish, Ca2+ concentrations play an important role in the regulation of sperm motility, and several reports highlight the importance of certain Ca2+ channels in the regulation of this cell function. CatSper is a calcium channel scarcely studied in
Jorge G Farías, Jennie Risopatron, Elias Figueroa Villalobos   +2 more
exaly   +3 more sources

A Golgi study of the hypothalamus of Actinopterygii

Cell and Tissue Research, 1978
The posterior hypothalami of the polypteriform, Calamoichthys, and of the teleost, Anguilla, were studied by means of the Golgi technique. In Calamoichthys, the lateral lobes are not developed and the median lobe is simple. In Anguilla, the median (tuberal) lobe shows lophodendritic, CSF-contacting cells and horizontal cells in the periventricular grey
FASOLO, Aldo, V. MAZZI, FRANZONI, Maria Fosca   +2 more
  +8 more sources

Evolutionary Analysis of Ghrelin in Actinopterygii

Comparative Biochemistry and Physiology Part D: Genomics and Proteomics
Ghrelin functions to stimulate appetite, promote the release of growth hormone, and regulate energy balance. Currently, research on the ghrelin is primarily focused on a single species, and there have been no systematic studies on the evolution of the ghrelin in fish.
Yusong Guo, Zhongduo Wang, Jiahao Luo
exaly   +3 more sources

Interrelationships of Gasterosteiformes (Actinopterygii, Percomorpha)

Journal of Ichthyology, 2006
Phylogenetic relationships of Gasterosteiformes were studied using osteological examination of representatives of 11 families of gasterosteiform fishes, as ingroups, and 5 families of other smegmamorph fishes (Atheriniformes, Elassomatiformes, and Synbranchiformes), as outgroups. Based on phylogenetic analysis of 110 informative osteological characters,
Y. Keivany, J. S. Nelson
openaire   +1 more source

Sperm maturation in sturgeon (Actinopterygii, Acipenseriformes): A review

Theriogenology, 2017
The morphology of the reproductive system of acipenseriform fishes is quite different from that of teleostean species, but an associated unique physiological difference in male sturgeons was not discovered until recently; sperm of sturgeons passes through the kidneys then via Wolffian ducts into the environment rather that emptying directly through ...
Borys, Dzyuba, Jacky, Cosson, Viktoriya, Dzyuba, Pavlo, Fedorov, Olga, Bondarenko, Marek, Rodina, Otomar, Linhart, William L, Shelton, Sergii, Boryshpolets   +8 more
openaire   +2 more sources

Denticles in fossil Actinopterygii.

Journal of Cell Science, 1942
ABSTRACT It has long been known that true denticles, as opposed to mere ridges, tubercles, or spines of the outer ganoine layer may occur on the exposed surface of the scales and dermal bones of living Actinopterygii such as Poly pt er us orLepidosteus.
openaire   +1 more source

Primary structure of stanniocalcin in two basal Actinopterygii

General and Comparative Endocrinology, 2004
The primary structure of stanniocalcin (STC), the principal product of the corpuscles of Stannius (CS) in ray-finned fishes, was deduced from STC cDNA clones for two species of holostean, the gar, Lepisosteus osseus and the bowfin, Amia calva. Overlapping partial cDNA clones were amplified by polymerase chain reaction (PCR) from single-strand cDNA of ...
Yutaka, Amemiya, John H, Youson
openaire   +2 more sources

Retroposons of salmonoid fishes (Actinopterygii: Salmonoidei) and their evolution

Gene, 2009
Short and long retroposons, or non-LTR retrotransposons (SINEs and LINEs, respectively) are two groups of interspersed repetitive elements amplifying in the genome via RNA and cDNA-mediated reverse transcription. In this process, SINEs entirely depend on the enzymatic machinery of autonomous LINEs.
Vitaliy, Matveev, Norihiro, Okada
openaire   +2 more sources

Polypteridae (Actinopterygii: Cladistia) and DANA-SINEs insertions

Marine Genomics, 2010
SINE sequences are interspersed throughout virtually all eukaryotic genomes and greatly outnumber the other repetitive elements. These sequences are of increasing interest for phylogenetic studies because of their diagnostic power for establishing common ancestry among taxa, once properly characterized. We identified and characterized a peculiar family
MORESCALCHI M. A, BARUCCA M, STINGO, Vincenzo, CAPRIGLIONE T.   +3 more
openaire   +4 more sources