Triploidy does not decrease contents of eicosapentaenoic and docosahexaenoic acids in filets of pink salmon Oncorhynchus gorbuscha.
Triploid fish has become an important item of commercial aquaculture, but data on its fatty acid (FA) composition are still controversial, especially regarding essential polyunsaturated fatty acids, eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA). We studied FA composition and content of diploid and triploid pink salmon Oncorhynchus gorbuscha, reared in aquaculture in a bay of the White Sea (Russia). FA composition, measured as percentages of total FA of triploids and immature diploid females significantly differed from that of mature diploid fish. Specifically, mature diploids had higher percentage of EPA and DHA in their muscle tissue (filets) compared to that of triploids and immature diploid females. Nevertheless, the contents of EPA and DHA per mass of the filets in diploid and triploid specimens were similar. Thus, no special efforts are needed to improve EPA and DHA contents in filets of triploids.
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russia; Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russia. Electronic address: glad@ibp.ru.
Michail I
MI
Gladyshev
A. N. Severtsov Institute of Ecology and Evolution of Russian Academy of Sciences, Leninsky Prospect, 33, Moscow 119071, Russia.
Valentina S
VS
Artamonova
A. N. Severtsov Institute of Ecology and Evolution of Russian Academy of Sciences, Leninsky Prospect, 33, Moscow 119071, Russia.
Alexander A
AA
Makhrov
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russia; Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russia.
Nadezhda N
NN
Sushchik
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russia.
Galina S
GS
Kalachova
A. N. Severtsov Institute of Ecology and Evolution of Russian Academy of Sciences, Leninsky Prospect, 33, Moscow 119071, Russia.
Yury Y
YY
Dgebuadze
D000818:Animals; D017756:Aquaculture; D004171:Diploidy; D004281:Docosahexaenoic Acids / Q000032:analysis*; D015118:Eicosapentaenoic Acid / Q000032:analysis*; D005260:Female; D008297:Male; D018482:Muscle, Skeletal / Q000737:chemistry; D012426:Russia; D012474:Salmon / Q000235:genetics* / Q000378:metabolism*; D017747:Seafood / Q000032:analysis*; D057885:Triploidy
D004281:Docosahexaenoic Acids; D015118:Eicosapentaenoic Acid
Essential fatty acids; Filets; Triploid fish