Migration of Sakhalin taimen (Parahucho perryi): evidence of freshwater resident life history types

Abstract

Sakhalin taimen (Parahucho perryi) range from the Russian Far East mainland along the Sea of Japan coast, and Sakhalin, Kuril, and Hokkaido Islands and are considered to primarily be an anadromous species. We used otolith strontium-tocalcium ratios (Sr/Ca) to determine the chronology of migration between freshwater and saltwater and identify migratory contingents of taimen collected from the Koppi River, Russia. In addition, we examined taimen from the Sarufutsu River, Japan and Tumnin River, Russia that were captured in marine waters. Transects of otolith Sr/Ca for the Sarufutsu River fish were consistent with patterns observed in anadromous salmonids. Two fish from the Tumnin River appeared to be recent migrants to saltwater and one fish was characterized by an otolith Sr/Ca transect consistent with marine migration. Using these transects as benchmarks, all Koppi River taimen were classified as freshwater residents. These findings suggest more work is needed to assess life history variability among locations and the role of freshwater productivity in controlling migratory behavior in taimen.

Eco-geographic units, population hierarchy, and a two-level conservation strategy with reference to a critically endangered salmonid, Sakhalin taimen Parahucho perryi

“…Honda et al 2012), and migratory reconstructions based on otolith microchemistry (e.g. Zimmerman et al 2012). This is the first study to describe patterns across a large portion of the species' range, providing a new perspective on how these fish adapt to their environment.…”

“…Sakhalin taimen exhibit a variety of migratory phenotypes, ranging from freshwater residency to anadromy (Zimmerman et al 2012), although Gritsenko (2002) has Martynenko (2007), the adjacent provinces are separated by dashed lines; an additional province is represented by a sample from Hokkaido. Other numbers stand for Sakhalin taimen populations: 1 Piltun Bay, 2 Val River, 3 Dagi River, 4 Tym River, 5 Nabil River, 6 Langeri River, 7 Poronay River and its tributaries (8 Onorka, 9 Brusnichnaya, 10 Elnaya), 11 Nevskoe Lake, 12 Tunaicha Lake, 13 Vavaiskoe Lake, 14 Urjum River, 15 Uljanovka River, 16 Moguchi River, 17 Lebedinoe Lake, 18 Kuibyshevka River, 19 Valentina Lake, 20 Sarafutsu River, 21 Tainoe Lake, 22 Ainskoe Lake, 23 Agnevo River, 24 Viakhtu River and Viakhtu Bay, 25 Tyk Bay, 26 Ulika River, 27 Tumnin River, 28 Koppi River, 29 Samarga River, 30 Kievka River characterized the species as semi-anadromous assuming that they do not migrate far from the natal river mouth.…”

“…Other numbers stand for Sakhalin taimen populations: 1 Piltun Bay, 2 Val River, 3 Dagi River, 4 Tym River, 5 Nabil River, 6 Langeri River, 7 Poronay River and its tributaries (8 Onorka, 9 Brusnichnaya, 10 Elnaya), 11 Nevskoe Lake, 12 Tunaicha Lake, 13 Vavaiskoe Lake, 14 Urjum River, 15 Uljanovka River, 16 Moguchi River, 17 Lebedinoe Lake, 18 Kuibyshevka River, 19 Valentina Lake, 20 Sarafutsu River, 21 Tainoe Lake, 22 Ainskoe Lake, 23 Agnevo River, 24 Viakhtu River and Viakhtu Bay, 25 Tyk Bay, 26 Ulika River, 27 Tumnin River, 28 Koppi River, 29 Samarga River, 30 Kievka River characterized the species as semi-anadromous assuming that they do not migrate far from the natal river mouth. The strontium-to-calcium ratio in their otoliths can help recognize anadromous versus non-anadromous behaviors (Edo et al 2005;Honda et al 2010;Zimmerman et al 2012), but this method requires sacrificing individual fish.…”

Habitats essentiels des larves et des juvéniles de la nouvelle population de bar rayé du Saint-Laurent /

“…Cependant, chez certaines populations, une fraction d'individus ne suit pas la tendance générale (Dingle 1996 (Kaitala et al 1993, Kerr et al 2009). Le phénomène est identifié chez un nombre croissance d'espèces (Chapman et al 2012 L'identification de la migration partielle chez des espèces de poissons exploitées (Tsukamoto et al 1998, Zimmerman et al 2012) démontre que notre vision du stock est erronée dans certains cas. C'est que le concept du stock au niveau des pêcheries est généralement très monolithique, reposant sur un seul trait de classification (entre autres génétique, moléculaire ou morphologique) et faisant la prémisse que les individus d'un stock se conforment à un mode de vie commun (Booke 1999).…”

“…Recent methodological advances and theoretical considerations have revealed that migration in fishes is a very complex trait , Arai et al 2004, Chapman et al 2012. There is increasing evidence of divergent life-history tactics in diverse animal populations , Morais et al 2011, Zimmerman et al 2012 that take on multiple forms, including partial migration. Partial migration can be defined as the presence of some resident (non-migratory) individuals within a migratory population (Chapman et al 201 lb).…”