Biological resources in the Sea of Okhotsk Large Marine Ecosystem: Their status and commercial use

Шунтов, В. П.; Иванов, О. А.; Dulepova, E. P.

doi:10.1016/j.dsr2.2019.01.006

Cited by 12 publications

(6 citation statements)

References 13 publications

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“…Declines in the growth of all salmon species across most of their range are the most commonly observed effect of density dependence, including hatchery production (Bigler et al, 1996;Oke et al, 2020). Though not included in our analyses because it did not explicitly evaluate hatchery fish and in contrast to most results, Shuntov et al (2019Shuntov et al ( , 2020 argued that competition for prey at sea is minimal because prey biomass is exceptional and because salmon consume a small fraction of the available prey.…”

Section: Hatchery Effects In Oceanmentioning

confidence: 99%

A global synthesis of peer‐reviewed research on the effects of hatchery salmonids on wild salmonids

McMillan

Morrison²,

Chambers

et al. 2023

Fisheries Management Eco

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Hatcheries have long produced salmonids for fisheries and mitigation, though their widespread use is increasingly controversial because of potential impacts to wild salmonids. We conducted a global literature search of peer‐reviewed publications (1970–2021) evaluating how hatchery salmonids affected wild salmonids, developed a publicly available database, and synthesized results. Two hundred six publications met our search criteria, with 83% reporting adverse/minimally adverse effects on wild salmonids. Adverse genetic effects on diversity were most common, followed by effects on productivity and abundance via ecological and genetic processes. Few publications (3%) reported beneficial hatchery effects on wild salmonids, nearly all from intensive recovery programs used to bolster highly depleted wild populations. Our review suggests hatcheries commonly have adverse impacts on wild salmonids in freshwater and marine environments. Future research on less studied effects—such as epigenetics—could improve knowledge and management of the full extent of hatchery impacts.

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Section: Hatchery Effects In Oceanmentioning

confidence: 99%

A global synthesis of peer‐reviewed research on the effects of hatchery salmonids on wild salmonids

McMillan

Morrison²,

Chambers

et al. 2023

Fisheries Management Eco

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“…There is a possibility that the decline in production is also related to their residency in the Sea of Okhotsk after they leave the coast of Japan. A paper by Shuntov et al (2018) summarized the biological information collected from numerous scientific surveys starting in the 1980s by the Russian scientists from TINRO in Vladivostok. Using extensive nekton data and over 300,000 stomach analyses, they concluded that competition for food is not the most important factor limiting the abundance of juvenile Pacific salmon in the Sea of Okhotsk because there is no evidence of acute food shortages.…”

Section: Example Of Hatchery Production In Japanmentioning

confidence: 99%

“…Of relevance to an explanation for the declining trend of Japanese production is the knowledge that the juvenile chum salmon from Japan and Russia rear in the Sea of Okhotsk before migrating into the open North Pacific . In a recent paper by Shuntov et al (2018), the authors estimate that prey for juvenile Pacific salmon in the Sea of Okhotsk is not limiting the production of Pacific salmon, suggesting that the factors responsible for the declining trend of Japanese chum salmon are initiated before they enter the Sea of Okhotsk.…”

Section: Introductionmentioning

confidence: 99%

Technical Report 11

2018

Technical Report

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“…Waters around the Kuril Islands, with their significant depth differences, are one of the world’s most productive marine ecosystem ( Shuntov, Ivanov & Dulepova, 2019 ). Nudibranchs are a common animal group of this area and, therefore, play an important role on trophic dynamics in the ecosystem studied.…”

Section: Introductionmentioning

confidence: 99%

A comparison of food sources of nudibranch mollusks at different depths off the Kuril Islands using fatty acid trophic markers

Komisarenko

Mordukhovich

Ekimova

et al. 2021

PeerJ

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Gastropod molluscs such as nudibranchs are important members of deep-sea benthic ecosystems. However, data on the trophic ecology and feeding specialization of these animals are limited to date. The method of fatty acid trophic markers (FATM) was applied to determine the dietary preferences of nudibranchs off the Kuril Islands. Fatty acid (FA) compositions of Dendronotus sp., Tritonia tetraquetra, and Colga pacifica collected from deep waters were analyzed and compared with those of Aeolidia papillosa and Coryphella verrucosa from the offshore zone. The high level of FATM such as 22:5n-6 and C20 monounsaturated FAs indicated that Dendronotus sp. preys on sea anemones and/or anthoathecates hydroids similarly to that of shallow-water species A. papillosa and C. verrucosa. The high percentage of tetracosapolyenoic acids and the ratio 24:6n-3/24:5n-6 indicated that T. tetraquetra preys on soft corals such as Gersemia and/or Acanella at a depth of 250 m, but soft corals of the family Primnoidae may be the main item in the diet of T. tetraquetra at a depth of 500 m. The high content of Δ 7,13-22:2 and 22:6n-3 shows that C. pacifica can feed on bryozoans. In C. pacifica, 22:5n-6 may be synthesized intrinsically by the mollusks, whereas odd-chain and branched saturated FAs originate from associated bacteria.

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Biological resources in the Sea of Okhotsk Large Marine Ecosystem: Their status and commercial use

Cited by 12 publications

References 13 publications

A global synthesis of peer‐reviewed research on the effects of hatchery salmonids on wild salmonids

A global synthesis of peer‐reviewed research on the effects of hatchery salmonids on wild salmonids

Technical Report 11

A comparison of food sources of nudibranch mollusks at different depths off the Kuril Islands using fatty acid trophic markers

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