Invasion of vendace Coregonus albula in a subarctic watercourse

Amundsen, Per‐Arne; Staldvik, Frode J.; Reshetnikov, Yu. S.; Kashulin, N. A.; Лукин, А. А.; Bøhn, Thomas; Sandlund, Odd Terje; Попова, О А

doi:10.1016/s0006-3207(98)00110-4

Cited by 57 publications

(114 citation statements)

References 35 publications

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“…Both Lake Inari and Lake Vaggatem are affected by the water regulations, but the regulation amplitude of both reservoirs are usually less than 1.5 m. In both lakes the ice-free season normally lasts from May-June to October-November and they have similar water chemistry ( Table 1). The lakes also have similar fish communities with European whitefish Coregonus lavaretus (L.) as the dominant native species in both systems (see Mutenia andSalonen 1992 andAmundsen et al 1999 for details).…”

Section: Study Areamentioning

confidence: 88%

“…The invasion of vendace from Lake Inari to the downstream Pasvik watercourse occurred in the late 1980s (Amundsen et al 1999). At this time period, the source population in Lake Inari was at a peak abundance (Salonen 1998(Salonen , 2004Salonen et al 2007), suggesting that a high number of individuals may have emigrated from the lake and downstream into the Pasvik watercourse.…”

Section: Study Areamentioning

confidence: 99%

“…At this time period, the source population in Lake Inari was at a peak abundance (Salonen 1998(Salonen , 2004Salonen et al 2007), suggesting that a high number of individuals may have emigrated from the lake and downstream into the Pasvik watercourse. The invasion proceeded rapidly down the watercourse, apparently facilitated by a concurrent overflow of the dam constructions (Amundsen et al 1999). Vendace was observed in Lake Vaggatem for the first time in 1991 and had by 1995 established populations along the whole Pasvik system (Amundsen et al 1999).…”

Section: Study Areamentioning

confidence: 99%

“…Vendace was introduced in Lake Inari, Finland, around 1960 (Mutenia and Salonen 1992), established a dense population and colonised downstream lakes in the Pasvik watercourse, Norway and Russia, where the species was observed for the first time in 1989 (Amundsen et al 1999). In Lake Vaggatem, Norway, in the upstream part of the Pasvik watercourse, the invader rapidly became the dominant pelagic fish species (Bøhn et al 2004(Bøhn et al , 2008.…”

Section: Introductionmentioning

confidence: 99%

“…In Lake Vaggatem, Norway, in the upstream part of the Pasvik watercourse, the invader rapidly became the dominant pelagic fish species (Bøhn et al 2004(Bøhn et al , 2008. Long-term investigations with annual sampling of vendace have been carried out in Lake Inari since 1985 (Salonen 1998(Salonen , 2004 and in Lake Vaggatem since 1991 (Amundsen et al 1999;Bøhn et al 2008). Here we perform a combined analysis of these time-series in order to compare the population biology and life-history strategies of the source (Lake Inari) and colonist (Lake Vaggatem) populations of the invader species prior to and following the downstream invasion and establishment.…”

Section: Introductionmentioning

confidence: 99%

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Invader population speeds up life history during colonization

Amundsen

Salonen²,

Niva³

et al. 2012

Biol Invasions

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We explore the long-term developments in population biology and life history during the invasion and establishment of the fish species vendace Coregonus albula in a subarctic watercourse by comparing life-history traits and molecular genetic estimates between the source and the colonist population. The two populations exhibited highly contrasting lifehistory strategies. Relative to the source population, the colonist population was characterized by slower somatic growth rates, earlier sexual maturation at smaller individual size, higher mortality rates and a shorter life span. The two populations could also be significantly discriminated by the genetic markers.Limited founder effects were detected from heterozygote deficit and reduced allelic richness in the colonist population, but both populations were associated with relatively high genetic diversity. The study reveals that the invasion into a new environment induced large changes in life-history strategy, with typical r-selected traits being more prominent in the colonist than in the source population. We discuss the mechanisms that may explain the observed life-history differences between the source and the colonist population, and argue that the accelerated life history of the colonist population represents an adaptive pioneer strategy aimed at fast population increase during colonization and establishment.

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Section: Study Areamentioning

confidence: 88%

Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Invader population speeds up life history during colonization

Amundsen

Salonen²,

Niva³

et al. 2012

Biol Invasions

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Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system

Klütsch

Maduna

Polikarpova

et al. 2019

Ecology and Evolution

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Habitat discontinuity, anthropogenic disturbance, and overharvesting have led to population fragmentation and decline worldwide. Preservation of remaining natural genetic diversity is crucial to avoid continued genetic erosion. Brown trout (Salmo trutta L.) is an ideal model species for studying anthropogenic influences on genetic integrity, as it has experienced significant genetic alterations throughout its natural distribution range due to habitat fragmentation, overexploitation, translocations, and stocking. The Pasvik River is a subarctic riverine system shared between Norway, Russia, and Finland, subdivided by seven hydroelectric power dams that destroyed about 70% of natural spawning and nursing areas. Stocking is applied in certain river parts to support the natural brown trout population. Adjacent river segments with different management strategies (stocked vs. not stocked) facilitated the simultaneous assessment of genetic impacts of dams and stocking based on analyses of 16 short tandem repeat loci. Dams were expected to increase genetic differentiation between and reduce genetic diversity within river sections. Contrastingly, stocking was predicted to promote genetic homogenization and diversity, but also potentially lead to loss of private alleles and to genetic erosion. Our results showed comparatively low heterozygosity and clear genetic differentiation between adjacent sections in nonstocked river parts, indicating that dams prevent migration and contribute to genetic isolation and loss of genetic diversity. Furthermore, genetic differentiation was low and heterozygosity relatively high across stocked sections. However, in stocked river sections, we found signatures of recent bottlenecks and reductions in private alleles, indicating that only a subset of individuals contributes to reproduction, potentially leading to divergence away from the natural genetic state. Taken together, these results indicate that stocking counteracts the negative fragmentation effects of dams, but also that stocking practices should be planned carefully in order to ensure long‐term preservation of natural genetic diversity and integrity in brown trout and other species in regulated river systems.

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Invasion genetics of vendace (Coregonus albula (L.)) in the Inari‐Pasvik watercourse: revealing the origin and expansion pattern of a rapid colonization event

Præbel

Gjelland

Salonen³

et al. 2013

Ecology and Evolution

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Species invasions can have wide-ranging biological and socio-economic effects and are generally unwanted by legislation. Identification of the source population as well as the ecology and genetics of both the invader population and the receiving community is of crucial importance. The rapid invasion of a small coregonid fish vendace (Coregonus albula) in a major northern European subarctic watercourse has resulted in a labile ecological situation in the receiving community. The ecological impact of the invasion has been thoroughly documented, but the genetics of the invasion remains to be explored. We analyzed the genetic diversity and divergence patterns among the two possible source populations from southern Finnish Lapland and three colonists populations within the Inari-Pasvik watercourse using ten microsatellite loci in order to (i) identify the most likely source of the invasion, (ii) reveal the dispersal pattern and genetic structure of the secondary expansion, and (iii) to investigate whether the initial introduction and the secondary expansion were associated with founder effects. We revealed that repeated translocation of vendace from Lake Sinettäjärvi into a tributary lake of L. Inari in 1964–1966 is the most plausible source for the invasion. Both the initial introduction and the secondary expansion were found not to be associated with significant founder effects. The secondary expansion followed a stepping stone pattern and the source and colonist populations of this expansion have undergone rapid genetic divergence within a period of 15–35 years (ca. 8–17 generations). The rapid divergence may be contributed to lack of gene flow among the source and colonist populations due to the extensive hydroelectric damming in the watercourse. Multiple introductions and substantial genetic variation in combination with the boom-and-bust population development of the species thus likely counteracted the founder effects as well as fueled the rapid establishment and expansion of this species within the Inari-Pasvik watercourse.

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Invasion of vendace Coregonus albula in a subarctic watercourse

Cited by 57 publications

References 35 publications

Invader population speeds up life history during colonization

Invader population speeds up life history during colonization

Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system

Invasion genetics of vendace (Coregonus albula (L.)) in the Inari‐Pasvik watercourse: revealing the origin and expansion pattern of a rapid colonization event

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