Winter mortality of young‐of‐the‐year pikeperch (<i>Stizostedion lucioperca</i>)

Kirjasniemi, Merja; Valtonen, Tapani

doi:10.1111/j.1600-0633.1997.tb00158.x

Cited by 28 publications

(15 citation statements)

References 8 publications

(9 reference statements)

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“…Piscivory by 0+ pikeperch and their consequently larger size probably has a positive effect on their survival (Buijse & Houthuijzen 1992). In a laboratory trial made by Kirjasniemi & Valtonen (1997), the overwinter survival of 0+ pikeperch was positively correlated with length. Size‐dependent overwinter survival of 0+ pikeperch has also been detected by comparing length frequency distributions of fish in autumn and the following spring in the Baltic Sea (Lappalainen, Erm, Kjellman & Lehtonen 2000).…”

Section: Discussionmentioning

confidence: 95%

Diet and growth of stocked and wild 0+ pikeperch, Stizostedion lucioperca (L.)

Sutela¹,

Hyvärinen²

2002

Fisheries Management Eco

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Wild and stocked 0+ pikeperch, Stizostedion lucioperca (L.), were sampled with a purse seine from Lake Oulujärvi, situated at the northern edge of the distribution range of the species. The stocked fry started immediate feeding on 0+ smelt, Osmerus eperlanus (L.) after their introduction into the lake in early August at about 50 mm length, whereas the smaller wild pikeperch fry continued to feed on zooplankton. Individual wet weight of the stocked pikeperch was about six‐fold compared with the wild pikeperch throughout August. The length of the ingested smelt was as on average 50%, and maximum 66%, of the pikeperch length. Wild 0+ pikeperch were too small to forage on 0+ smelt. Predation by older conspecifics on 0+ pikeperch was observed.

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Section: Discussionmentioning

confidence: 95%

Diet and growth of stocked and wild 0+ pikeperch, Stizostedion lucioperca (L.)

Sutela¹,

Hyvärinen²

2002

Fisheries Management Eco

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“…However, winter mortality may still be present in species that are able to feed under winter conditions if winter resource levels are low, but could be either negatively‐, positively‐ or non‐ size‐dependent based on the complex interactions between foraging rate, metabolism and stored energy reserves. Correspondingly, fish such as walleye ( Sander vitreus ) and pike perch ( Sander lucioperca ), which have been shown to be able to feed during winter, also show large variation between systems in size‐dependent winter mortality (Toneys and Coble 1979, Madenjian et al 1996, Kirjasniemi and Valtonen 1997a, Copeland and Carline 1998, Pratt and Fox 2002). Nevertheless, strong evidence for negative size‐dependent winter mortality has been found in lake living rainbow trout ( Oncorhynchus mykiss ), which have experimentally been shown to have the capacity to feed during winter (Connolly and Petersen 2003, Biro et al 2004).…”

Section: Discussionmentioning

confidence: 99%

Size and temperature dependent foraging capacities and metabolism: consequences for winter starvation mortality in fish

Byström

Andersson²,

Kiessling³

et al. 2006

Oikos

117

110

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The foraging related capacities, energy requirements and the ability of individuals to withstand starvation are strongly dependent on body size and temperature. In this study, we estimated size‐dependent foraging rates and critical resource density (CRD) in small Arctic char (Salvelinus alpinus) under winter conditions and compared these with previous observations under summer conditions. We investigated if starvation mortality is size‐dependent in the laboratory, and we assessed the potential for winter growth and the occurrence and size dependency of winter mortality both in a large scale pond experiment and in natural lakes. The efficiency of foraging on macroinvertebrates increased with size but was lower at 4 than 12°C, still CRD was lower at 4 than 12°C as metabolic rates decreased faster than foraging efficiency with temperature. When starved, small char died before large and at rates which suggest that YOY char need to feed during winter to avoid starvation. Results from both our pond experiment and field study indicate that survival of YOY char over winter is high, despite severe winter conditions, because YOY char are able to feed and grow during winter. In seasonal environments with declining resources, the size scaling and temperature dependency of foraging and metabolic demands may provide conditions which can favour either small or large individuals. This size advantage dichotomy relates to that larger individual's by having a higher CRD are more likely to start starving, but once resource levels are below CRD for all size classes, small individuals starve to death at a higher rate. Negative size‐dependent winter mortality from starvation is suggested to be more pronounced in species that are not adapted to feed at low temperatures and in species feeding on zooplankton, since zooplankton abundance, in contrast to macroinvertebrate abundance, is generally low during winter.

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“…The reason for this is probably the prolonged growth season for YOY pike-perch, allowing them to begin feeding on fish (46), and thus to grow rapidly and store fat before winter. Also as a larger predator they are able to find more food during winter which increases the chances of survival (15,47,48). Furthermore, their close relative, perch, shows strong year-classes after warm summers when the YOY has grown well (49,50).…”

Section: Recruitment and Summer Temperaturementioning

confidence: 97%

Recruitment of Pelagic Fish in an Unstable Climate: Studies in Sweden's Four Largest Lakes

Nyberg¹,

Bergstrand²,

Degerman³

et al. 2001

AMBIO: A Journal of the Human Environment

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Pelagic fish population biology was studied in the large Swedish lakes Vänern, Vättern, Mälaren and Hjälmaren. It is crucial for fish fry in temperate regions to hatch early in the growth season to survive, and achieve large size before winter, and it is suggested that the key factors are to match the spring development of phyto- and zooplankton, but to avoid predation. This is more easily accomplished by the studied spring spawners smelt (Osmerus eperlanus) and pike-perch (Stizostedion lucioperca) than autumn spawners, such as vendace (Coregonus albula). It is shown that hatching of vendace fry shortly after ice-break-up is beneficial for year-class strength. In oligotrophic large lakes with few predatory species a rapid increase in water temperature after ice-break is also promoting recruitment, whereas this is not the case in eutrophic lakes where predation pressure from other species may become too high. The results indicate that autumn spawners will have difficulties in adapting to global warming and it is also suggested that the life history can explain the large variations observed in year-class strength between years.

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Winter mortality of young‐of‐the‐year pikeperch (Stizostedion lucioperca)

Cited by 28 publications

References 8 publications

Diet and growth of stocked and wild 0+ pikeperch, Stizostedion lucioperca (L.)

Diet and growth of stocked and wild 0+ pikeperch, Stizostedion lucioperca (L.)

Size and temperature dependent foraging capacities and metabolism: consequences for winter starvation mortality in fish

Recruitment of Pelagic Fish in an Unstable Climate: Studies in Sweden's Four Largest Lakes

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