Results 181 to 190 of about 1,152 (209)

Olfactory organ of acipenseriformes and comparison with other actinopterygians: Patterns of diversity

Journal of Morphology, 1994
AbstractThe position and structure of the olfactory organ and its openings vary among actinopterygians. The anterior nasal opening is a simple perforation in the skin in many extant actinopterygians (e.g., acipenseriforms, lepisosteids, and primitive Recent teleosts) and represents the primitive condition.
Xin-Yu, Chen, Gloria, Arratia
openaire   +2 more sources

Complete mitochondrial genome ofAcipenser schrenckii(Acipenseriformes, Acipenseridae)

Mitochondrial DNA, 2013
Abstract The complete nucleotide sequence of Acipenser schrenckii mtDNA is 16,592 bp long (Accession No. KC820796). The total mitochondrial genome is consisted of 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes and 1 control region. The gene organization and arrangement is identical to typical vertebrates.
Xiao-Li, Dong, Jing, Yu, Ying, Zhang, Da-Jiang, Sun   +3 more
openaire   +2 more sources

The aquaculture of acipenseriformes. Part 5. Dunabe Basin and Middle East

, 2020
The history and contemporary state of global aquaculture of sturgeons and paddlefish are reviewed. 5th part is devoted to sturgeon breeding in the basin of Black sea (without countries of former USSR reviewed earlier) аnd in the Middle East.
I. V. Trenkler
semanticscholar   +1 more source

Nematocysts of Polypodium hydriforme, a cnidarian parasite of acipenseriform fishes

Hydrobiologia, 2004
Structure of nematocysts from Polypodium hydriforme was studied by scanning and transmission electron microscopy. Two nematocyst types were observed: holotrichous isorhizas with minute spines, and true atrichous isorhizas. Among holotrichous isorhizas four morphological categories were distinguished based on differences in morphology of their ...
Alexey Ibragimov, Ekaterina Raikova
openaire   +1 more source

A Rare, Articulated Sturgeon (Chondrostei: Acipenseriformes) from the Upper Cretaceous of Dinosaur Provincial Park, Alberta, Canada

Journal of Vertebrate Paleontology, 2018
Although fragmentary remains of sturgeon, such as scutes and pectoral spines, are relatively common in fossil deposits, articulated fossilized skeletons are rare in Upper Cretaceous sediments of North America.
Hiroki Sato, A. Murray, O. Vernygora, P. Currie   +3 more
semanticscholar   +1 more source

Origin and Diversification of Acipenseriforms

Journal of Ichthyology, 2022
openaire   +1 more source

Development of Single Nucleotide Polymorphism Markers for the Autotetraploid Scaphirhynchus Sturgeons (Acipenseriformes)

Journal of Ichthyology : A Translation of Voprosy Ikhtiologii, 2022
T. Zhou, J. Huang, C. B. Dillman, Y. He, C. Li   +4 more
semanticscholar   +1 more source

Polyploidization by reticular speciation in Acipenseriform evolution: a working hypothesis

Journal of Applied Ichthyology, 1999
Summary A working hypothesis to explain the polyploid evolution of Acipenserids as a result of reticular speciation is presented. It is assumed that the process of polyploidization is a result of multiple origin of poly-chromosomal sturgeon species and different DNA content despite similar karyotypes and low rate of mtDNA evolution.
openaire   +1 more source

Современные сведения по биологии сахалинского осетра Acipenser mikadoi (Acipenseridae, Acipenseriformes) (Обзор)

Биология внутренних вод, 2022
Е. В. Микодина, Г. И. Рубан   +1 more
semanticscholar   +1 more source

?????????????????? ?????????????????????? ?????????? ?? ???????????????????? ?????????????????? ?????????????????? ??????????????, Acipenser stellatus (Acipenseriformes, Acipenseridae), ?????????????? ????????

2009
Age and growth rate of Black Sea starry sturgeon (Acipenser stellatus, Pallas 1771) were studied based on analysis of pectoral fin spine sections internal structure. Time of annual growth marks formation was determined. Parameters of von Bertalanffy growth equation were estimated.
openaire   +1 more source