Life history and migration of Sakhalin taimen, Hucho perryi, caught from Lake Akkeshi in eastern Hokkaido, Japan, as revealed by Sr:Ca ratios of otoliths

Honda, Kentaro; Arai, Takaomi; Takahashi, Nobuyuki; Miyashita, Kazushi

doi:10.1007/s10228-010-0174-2

Cited by 15 publications

(21 citation statements)

References 21 publications

(26 reference statements)

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“…In combination, otolith microchemistry has been used to describe migratory behavior in only a total of 31 Sakhalin taimen: 13 in this study, eight in Arai et al (2004), and ten in Honda et al (2010). These results suggest that there are existing gaps in our knowledge of taimen behavior and ecology.…”

Section: Discussionmentioning

confidence: 75%

“…These results suggest that there are existing gaps in our knowledge of taimen behavior and ecology. It is clear that diadromous migrations are conducted by Sakhalin taimen (Arai et al 2004;Honda et al 2010), but it is not clear whether these migrations are annual (as observed in amphidromous species such as Dolly Varden Salvelinus malma; Armstrong 1974), or if taimen overwinter in seawater. Further, it is not clear what proportion of Sakhalin taimen are diadromous and how that proportion is controlled by watershed and estuarine productivity.…”

Section: Discussionmentioning

confidence: 96%

“…Arai et al (2004) used otolith microchemistry to demonstrate that taimen collected from a stream on Sakhalin Island had repeatedly migrated to saltwater. Similarly, from Lake Akkeshi on Hokkaido, Japan, Honda et al (2010) used otolith microchemistry and determined that eight of ten taimen examined were anadromous, and the remaining two samples had migrated to brackish waters. Edo et al (2005) classified taimen captured near the mouth of the Sarufutsu River, on the island of Hokkaido, as anadromous based on capture in near-shore set-nets, stomach contents containing marine species, and silvery coloration.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2011

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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.

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Section: Discussionmentioning

confidence: 75%

Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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

et al. 2011

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“…However, information about the life history of anadromous Sakhalin taimen is still limited with only a few studies being done on ecological aspects of their freshwater phases [8][9][10][11], the morphology of anadromous Sakhalin taimen [12], or on the microchemistry of the otoliths and scales [13][14][15]. Fish otoliths are metabolically inert with the aragonite mineralogy remaining unaltered after deposition [16], so the elemental composition of the otolith reflects to some degree the environment of the water in which the fish lives [17].…”

Section: Introductionmentioning

confidence: 99%

Migration history of Sakhalin taimen Hucho perryi captured in the Sea of Okhotsk, northern Japan, using otolith Sr:Ca ratios

et al. 2011

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Sakhalin taimen Hucho perryi populations have decreased drastically to near extinction. It is urgent to establish an effective conservation strategy based on an understanding of the characteristics of migration and habitat use of this species. We examined the migration history of anadromous Sakhalin taimen captured off the Sarufutsu coast, northern Hokkaido, Japan, using otolith Sr:Ca ratios and also examined the relationship between their otolith Sr:Ca ratios during freshwater and seawater residence in a rearing experiment. Otolith Sr:Ca ratios of some fish from the Sarufutsu coast showed freshwater levels (0.5-4.0 9 10 -3 ) near the core, which thereafter increased to brackish water levels (4.0-6.0 9 10 -3 ), and then to seawater levels (6.0-10.0 9 10 -3 ) in the outermost regions. Those findings indicate that specimens from the Sarufutsu coast migrated to the brackish water region or the sea and spent most of their lives there. The anadromous migration pattern including the timing of downstream migration seems to be flexible among individuals in the species. They migrate between freshwater and seawater or brackish water several times during their lives, showing extensive habitat use. It is essential to secure the continuity among the freshwater, brackish water, and seawater areas for their effective conservation.

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“…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.…”

Section: Assignment Into Migratory Phenotypesmentioning

confidence: 99%

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

et al. 2014

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Hierarchical population structure can result from range-wide geographic subdivision under conditions of environmental heterogeneity and weak gene flow. While a lower level of structure can be formed by local populations within eco-geographic regions, an upper level can be characterized by variation between populations from different regions, and thus, be represented by evolutionarily significant units (ESUs) defined by environmental, ecological and genetic variation. Selection of ESUs may depend on the sequence of using these three sources of variation. We propose to determine ESUs by first using non-genetic, ecological and geographical gradients for defining preliminary population groups (eco-geographic units, EGUs) and then testing whether the boundaries of these units are genetically coherent and thus represent ESUs or warrant their further modification. We evaluate this approach using Sakhalin taimen, an East Asian endangered endemic fish. Forty-one samples (473 fish) were drawn from thirty populations across the species range and genotyped at microsatellite DNA markers. We assign the populations into ESUs based on geographic and life history criteria and subsequent application of genetic diversity analyses. The ESUs appeared to be greatly diverged genetically. Within ESUs, local populations are genetically differentiated, have low effective sizes, show signatures of demographic decline and extremely restricted gene flow. Conservation plans aimed to restore or maintain a specific threatened population should take into account such hierarchical structure, and in particular be based on the genetic resources drawn from each population or using ecologically and genetically similar populations from the same ESU as donors for restoration of the population.

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Life history and migration of Sakhalin taimen, Hucho perryi, caught from Lake Akkeshi in eastern Hokkaido, Japan, as revealed by Sr:Ca ratios of otoliths

Cited by 15 publications

References 21 publications

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

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

Migration history of Sakhalin taimen Hucho perryi captured in the Sea of Okhotsk, northern Japan, using otolith Sr:Ca ratios

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

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