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Yuzhno-Sakhalinsk, Russia

Zolotukhin S.,center | Makeev S.,FGBU Sakhalinrybvod | Semenchenko A.,Russian Academy of Sciences
Archives of Polish Fisheries

Sakhalin taimen, Parahucho perryi (Brevoort), is considered one of the most ancient and largest salmonids in the world. Unlike Pacific salmon, Oncorhynchus tshawytscha (Walbaum), Sakhalin taimen do not migrate far out to sea. These fish adopt a K-selected life history strategy that is characterized by late age at maturity and iteroparity. This life history type makes them unusually vulnerable, especially in the face of unsustainable harvesting pressure. In Russia, the threats Sakhalin taimen face are anthropogenic, and stem largely from direct catches of fish and not the degradation of their habitats. The main reason is excessively high mortality caused either by commercial fishing (bycatch take and related fishing infrastructure, including nets and weirs) and recreational fishing. Trappers and fishermen usually do not release captured Sakhalin taimen. © Inland Fisheries Institute in Olsztyn, Poland. Source

Makeev S.S.,FGBU Sakhalinrybvod | Samarskiy V.G.,FGBU Sakhalinrybvod | Sukhonos P.S.,FGBU Sakhalinrybvod | Bobrov I.S.,FGBU Sakhalinrybvod | Proskuryakov K.A.,OOO Salmo
Archives of Polish Fisheries

This paper presents the history and the results of rearing Parahucho perryi (Brevoort) under commercial conditions at salmonid fish farms in the district of Sakhalin. Experimental work was conducted at five fish farms where fish originating from ten rivers were reared. The optimal temperature range during egg incubation and larval rearing was 8-10 C. Visible eye pigmentation was noted, on average, after 24 days of incubation, and the larvae hatched between days 34 and 54 of incubation. Egg fertilization rates were high at 89.2-98.2%. High losses during the egg incubation and larval hatching stages indicate that the methods applied must be optimized. © Inland Fisheries Institute in Olsztyn, Poland. Source

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