Results 181 to 190 of about 8,491 (227)

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, Zhong-Duo Wang, Jiahao Luo   +2 more
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
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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
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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.
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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
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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
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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
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Ray-finned fishes (Actinopterygii)

2009
Abstract Actinopterygii, or ray-Anned Ashes, are one of the two major lineages of osteichthyan vertebrates, the other being Sarcopterygii (1). 7ere are more than 26,890 species of actinopterygian Ashes and the group has diversiAed into a wide range of marine and freshwater habitats (2).
Thomas J Neara, Masaki Miyab
openaire   +1 more source

Osteichthyes: Immune Systems of Teleosts (Actinopterygii)

2018
Teleosts and elasmobranchs are the lowest vertebrates that possess adaptive immunity akin to mammalian ones. However, the fish immune system is different from that of mammals, that is, a lack of bone marrow, lymph nodes and germinal center. Their immune system is also characterized by the fact that their surface is covered by live cells with mucus in ...
Teruyuki Nakanishi, Jun-ichi Hikima, Takashi Yada   +2 more
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?????????????????? ???????? (Teleostei, Actinopterygii) ???????????????? ?????????????? ?? ???????????????? ???? ?????????????????????????????? ?????????????? ?????????????? (??????????????)

2019
???? ???????? ?????????????????????????????? ?????????????????????? ???????????????????????? ???????? ???????????????????? ?????????????? ???????????????????????????? 20 ??????????, ?????????????????????? ?? 14 ??????????, 4 ???????????????????? 4 ?????????????? (Cypriniformes, Siluriformes, Esociformes, Perciformes). ???? ?????????????????? ???????????
openaire   +1 more source