On the structure and development of the parasphenoid and the ventral rostral bones in Acipenser baerii and Polyodon spathula (Actinopterygii, Acipenseriformes)

2021 ◽  
Author(s):  
Alexey A. Tsessarsky

2019 ◽  
Vol 55 (3) ◽  
pp. 14-19 ◽  
Author(s):  
Kh. M. Kurta ◽  
O. O. Malysheva ◽  
M. Yu. Yevtushenko ◽  
V. G. Spyrydonov


2010 ◽  
Vol 36 (6) ◽  
pp. 1113-1121
Author(s):  
Ying HUANG ◽  
Xiao-Ming ZHU ◽  
Shou-Qi XIE ◽  
Wu LEI ◽  
Yun-Xia YANG ◽  
...  


2009 ◽  
Vol 33 (2) ◽  
pp. 316-323 ◽  
Author(s):  
Feng-Qi ZHAO ◽  
Jin-Ling CAO ◽  
Qing LIU
Keyword(s):  


2017 ◽  
Vol 68 (5) ◽  
pp. 1063-1069
Author(s):  
Cristina Simeanu ◽  
Daniel Simeanu ◽  
Anca Popa ◽  
Alexandru Usturoi ◽  
Dan Bodescu ◽  
...  

Polyodon spathula sturgeon breed is successfully reared in Romania in many fishery farms for meat production and it is capitalized on domestic market as consumption fish. In the current paper were studied a number of 1400 sturgeons from Polyodon spathula breed (1200 individuals of one summer - P.s.0+ and 200 individuals of fourth summers - P.s.3+). From this flock were weighted around 10%, for each age group, and for laboratory determinations were chosen 10 fishes for each age with the corporal mass close to the group mean. After analysing the fillets gathered from the studied fishes for establishing the chemical characteristics, nutritive and biological values of proteins were drawn some interesting conclusions. So, regarding chemical composition we notice that in the meat of analysed fishes water is in a rate of 75.41% at P.s.3+ and 78.37% for P.s.0+; proteins - between 18.08% for P.s.0+ and 19.89% for P.s.3+, values which place those fishes in the group of protein fishes; lipids - between 2.45% and 3.45%, values which situated those sturgeons in category of fishes with a low content in lipids; collagen � 3.83% at P.s.0+ and 4.14% at P.s.3+ which indicate low values for proteins of weak quality in the meat of those sturgeons. Study of nutritive value for the analysed fishes indicate the fact that fishes P.s.0+ have a mediocre nutritive value, having the ratio w/p of 4.33 while sturgeons P.s.3+ were placed in the 2nd category � fishes with a good nutritive value (rate w/p = 3.79). Energetic value of the studied fillets was 97.39 kcal/100 g for P.s.0+ and 114.31 kcal/100 g for P.s.3+, which enlightened an increase of nutritive value with aging, fact especially due to accumulation of adipose tissue. Study of proteins quality, through the presence of those 8 essential amino-acids in the meat of analysed fishes, show the fact that at sturgeons P.s.0+ proportion of essential amino-acids was 20.88% from total amino-acids, while at sturgeons P.s.3+ was 26.23%, fact which enlightened an increasing of proteins� biological value with fish aging. This fact was also shown by calculation of proteins� biological value through chemical methods (EAA index); calculated value for sturgeons P.s.0+ was a little bit lower (118.73) than the one calculated for sturgeons P.s.3+ (118.79).



2018 ◽  
Vol 58 (4) ◽  
pp. 471-476
Author(s):  
С. В. Лукиянов ◽  
В. А. Кузнецов ◽  
Е. А. Лобачёв
Keyword(s):  


2020 ◽  
Vol 51 (4) ◽  
pp. 1689-1699
Author(s):  
Sedigheh Babaei ◽  
Abdolmohammad Abedian-Kenari ◽  
Mahmood Naseri ◽  
Mohammad Ali Yazdani-Sadati ◽  
Isidoro Metón




Genes ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1375
Author(s):  
Larisa S. Biltueva ◽  
Dmitry Yu. Prokopov ◽  
Svetlana A. Romanenko ◽  
Elena A. Interesova ◽  
Manfred Schartl ◽  
...  

Polyploid genomes present a challenge for cytogenetic and genomic studies, due to the high number of similar size chromosomes and the simultaneous presence of hardly distinguishable paralogous elements. The karyotype of the Siberian sturgeon (Acipenser baerii) contains around 250 chromosomes and is remarkable for the presence of paralogs from two rounds of whole-genome duplications (WGD). In this study, we applied the sterlet-derived acipenserid satDNA-based whole chromosome-specific probes to analyze the Siberian sturgeon karyotype. We demonstrate that the last genome duplication event in the Siberian sturgeon was accompanied by the simultaneous expansion of several repetitive DNA families. Some of the repetitive probes serve as good cytogenetic markers distinguishing paralogous chromosomes and detecting ancestral syntenic regions, which underwent fusions and fissions. The tendency of minisatellite specificity for chromosome size groups previously observed in the sterlet genome is also visible in the Siberian sturgeon. We provide an initial physical chromosome map of the Siberian sturgeon genome supported by molecular markers. The application of these data will facilitate genomic studies in other recent polyploid sturgeon species.



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