Morphophysiological patterns of life history strategy adoption in Dolly Varden Salvelinus malma in Kamchatka

Груздева, М. А.; Kusishchin, K. V.; Pavlov, E. D.; Bush, A. G.; Belova, N. V.; Polyakov, M. P.; Malyutina, A. M.; Pavlova, D. S.

doi:10.1134/s0032945217050083

Cited by 13 publications

(3 citation statements)

References 28 publications

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“…Growth comparisons between resident and anadromous Dolly Varden, indicates that juvenile growth did not differ between residents and early smolts. These are consistent with observations of Dolly Varden in Kamchatka (Gruzdeva et al 2017), female Dolly Varden from the western Canadian Arctic (Gallagher et al 2019), and findings in other salmonids by Morinville and Rasmussen (2003) and Theriault and Dodson (2003). However, compared to early smolts, residents from the Rat and Big Fish rivers had a trend towards increased size at age-1 to age-3 on the Rat River, and age-2 and age-3 on the Big Fish River.…”

Section: Discussionsupporting

confidence: 89%

“…The pattern of size differences between early and late smolting Dolly Varden observed in our study is consistent with Dolly Varden populations in Kamchatka (Gruzdeva et al 2017), and numerous studies on other salmonids such as Arctic char (Svenning et al 1992;Rikardsen and Elliott 2000), brook trout (Morinville and Rasmussen 2003;Theriault and Dodson 2003), brown trout (Jonsson 1985;Forseth et al 1999), and Atlantic salmon (Metcalfe et al 1988;Jonsson et al 1998). Anadromy is often considered a sizedependent tactic since a certain threshold size is needed for osmoregulation (Conte and Wagner 1965;McCormick and Saunders 1987).…”

Section: Discussionsupporting

confidence: 89%

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Freshwater early life growth influences partial migration in populations of Dolly Varden (Salvelinus malma malma)

et al. 2021

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Populations of northern Dolly Varden (Salvelinus malma malma) exhibit partial seaward migration, yet little is known about this phenomenon in Dolly Varden populations. Our study analyzed data from three different Dolly Varden populations in the western Canadian Arctic in order to determine if: (1) differences in size-at-first seaward migration exist between fish that migrate at early and late ages among populations inhabiting different river systems, and (2) annual growth influences anadromous or resident life history choice. Otolith strontium analysis and back-calculation were used to determine age- and size-at-first seaward migration, respectively. Differences in age- and size-at-first seaward migration were determined across river system and migration age. Back-calculated fish lengths were compared using a mixed effect model to determine how early growth influences migratory tactics (early or late aged smolt, or resident). Our results indicate that fish exhibiting faster early growth migrated in earlier years and at smaller sizes than slower growing fish, however size- and age-at first seaward migration varied by river system. Faster growing Dolly Varden tended to become either residents or early smolts, while slower growth was associated with smolting later in life. This is contrary to life history theory where the fastest growing fish in a population should mature as a resident. Our results indicate factors other than growth may be influencing life history ‘decisions’ in Dolly Varden. Future work on growth efficiencies and metabolic rates is needed to assess how they affect migratory behaviours.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 89%

Freshwater early life growth influences partial migration in populations of Dolly Varden (Salvelinus malma malma)

et al. 2021

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“…juveniles of different ages. The behavior of fish during spawning was studied by visual underwater observations and using a GoPro camera (GoPro, Inc, USA) (Kuzishchin et al, 2008;Gruzdeva et al, , 2017.…”

Section: Methodsmentioning

confidence: 99%

“Freshwater Components” in the Populations of Whitespotted Char Salvelinus leucomaenis (Salmonidae) in the North of the Species Range (Kamchatka)

et al. 2022

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The variety of types of life strategy and the structure of the populations of whitespotted char Salvelinus leucomaenis (Pallas, 1814) are considered at Kamchatka. At the north of the species range, the populations of whitespotted char are heterogeneous. The main role in reproduction belongs to anadromous whitespotted char, but there are also the groups in the populations that realize their life cycle exclusively in fresh waters. Dwarf males are common in the rivers of different types. In the geomorphologically complex river (Kol), there is also the river populations of rheodromous whitespotted char, represented by males and females. Favorite biotopes (blockages and creases of woody material on deep reaches, found only in foothill rivers) are key parameters predetermining the presence of a river population of rheodromous whitespotted char. At the north of the species range, the variety of individuals with different types of life strategy in whitespotted char is comparable to that observed in the southern parts, in particular, in the basin of the Sea of Japan, which is considered the zone of the ecological optimum of the species.

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An updated review of the post-glacial history, ecology, and diversity of Arctic char (Salvelinus alpinus) and Dolly Varden (S. malma)

Weinstein,

Gallagher,

Hale

et al. 2024

Environ Biol Fish

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Morphophysiological patterns of life history strategy adoption in Dolly Varden Salvelinus malma in Kamchatka

Cited by 13 publications

References 28 publications

Freshwater early life growth influences partial migration in populations of Dolly Varden (Salvelinus malma malma)

Freshwater early life growth influences partial migration in populations of Dolly Varden (Salvelinus malma malma)

“Freshwater Components” in the Populations of Whitespotted Char Salvelinus leucomaenis (Salmonidae) in the North of the Species Range (Kamchatka)

An updated review of the post-glacial history, ecology, and diversity of Arctic char (Salvelinus alpinus) and Dolly Varden (S. malma)

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