Postglacial expansion of the Arctic keystone copepod Calanus glacialis

Weydmann, Agata; Przyłucka, Aleksandra; Lubośny, Marek; Walczyńska, Katarzyna S.; Serrão, Ester Á.; Pearson, Gareth A.; Burzyński, Artur

doi:10.1007/s12526-017-0774-4

Cited by 14 publications

(12 citation statements)

References 55 publications

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“…The reason for this pattern could be the rapid expansion of this species after the last glacial maximum. Similar dispersal was observed for other Arctic species that have survived in the refugia, then quickly spread to their current habitats after the deglaciation ( Hewitt, 2000 ; Weydmann et al, 2017 ).…”

Section: Discussionsupporting

confidence: 75%

Genetic population structure of the pelagic mollusk Limacina helicina in the Kara Sea

Abyzova

Никитин

Popova

et al. 2018

PeerJ

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BackgroundPelagic pteropods Limacina helicina are widespread and can play an important role in the food webs and in biosedimentation in Arctic and Subarctic ecosystems. Previous publications have shown differences in the genetic structure of populations of L. helicina from populations found in the Pacific Ocean and Svalbard area. Currently, there are no data on the genetic structure of L. helicina populations in the seas of the Siberian Arctic. We assessed the genetic structure of L. helicina from the Kara Sea populations and compared them with samples from around Svalbard and the North Pacific.MethodsWe examined genetic differences in L. helicina from three different locations in the Kara Sea via analysis of a fragment of the mitochondrial gene COI. We also compared a subset of samples with L. helicina from previous studies to find connections between populations from the Atlantic and Pacific Oceans.Results65 individual L. helinica from the Kara Sea were sequenced to produce 19 different haplotypes. This is comparable with numbers of haplotypes found in Svalbard and Pacific samples (24 and 25, respectively). Haplotypes from different locations sampled around the Arctic and Subarctic were combined into two different groups: H1 and H2. The H2 includes sequences from the Kara Sea and Svalbard, was present only in the Atlantic sector of the Arctic. The other genetic group, H1, is widespread and found throughout all L. helicina populations. ϕ ST analyses also indicated significant genetic difference between the Atlantic and Pacific regions, but no differences between Svalbard and the Kara Sea.DiscussionThe obtained results support our hypothesis about genetic similarity of L. helicina populations from the Kara Sea and Svalbard: the majority of haplotypes belongs to the haplotype group H2, with the H1 group representing a minority of the haplotypes present. In contrast, in the Canadian Arctic and the Pacific Ocean only haplogroup H1 is found. The negative values of Fu’s Fs indicate directed selection or expansion of the population. The reason for this pattern could be an isolation of the Limacina helicina population during the Pleistocene glaciation and a subsequent rapid expansion of this species after the last glacial maximum.

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Section: Discussionsupporting

confidence: 75%

Genetic population structure of the pelagic mollusk Limacina helicina in the Kara Sea

Abyzova

Никитин

Popova

et al. 2018

PeerJ

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“…Although we lack a reliable method of calibrating the molecular clock for Daphnia curvirostris , we note that the genetic divergences and star-like patterns for ND2 (subclade A) are very close to those found for the multiple proposed postglacial expansions in Daphnia galeata , Daphnia dentifera , and Bosmina longispina using the same gene 24,25,49 . Because the distribution is in a region that was profoundly affected (or covered) by glaciation during the LGM, and normally only the most recent glacial expansions can be detected with contemporary data, the data are consistent with an expansion time that is post-LGM 50,51 .…”

Section: Discussionsupporting

confidence: 55%

“…Subclade J ( Daphnia sp. nov.) was undetected in other water bodies of Japan (or any other region), although about 100 lakes and ponds were sampled and populations of different species of Daphnia were found in many water bodies of Japan 24,25,42,51 . So, this subclade (and likely a new biological species, see the HSP90 tree) may be present in very few water bodies on the planet.…”

Section: Discussionmentioning

confidence: 99%

Contrasting endemism in pond-dwelling cyclic parthenogens: the Daphnia curvirostris species group (Crustacea: Cladocera)

Kotov

Taylor

2019

Sci Rep

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Pond-dwelling cyclic parthenogens are often proposed to be highly vagile. However, the Holarctic biogeography of parthenogens has been hampered by very limited sampling in the eastern Palearctic. Here we examine the geographic boundaries, diversity, and connectivity across the Palearctic for the Daphnia curvirostris complex (Cladocera: Daphniidae). Nuclear (HSP90) and mitochondrial (ND2) sequence data supported the existence of five main clades (most of which corresponded to presumptive species) with one eastern Palearctic clade being novel to this study (the average mitochondrial genetic divergence from known species was 19.2%). D . curvirostris s.s. was geographically widespread in the Palearctic, with a population genetic signature consistent with postglacial expansion. The Eastern Palearctic had local nine endemic species and/or subclades (other Holarctic regions lacked more than one endemic subclade). Even though several endemic species appeared to have survived Pleistocene glaciation in the eastern Palearctic, much of the Palearctic has been recolonized by D . curvirostris s.str. from a Western Palearctic refugium. A disjunct population in Mexico also shared its haplotypes with D . curvirostris s.str., consistent with a recent introduction. The only apparently endemic North American lineage was detected in a thermally disturbed pond system in northwestern Alaska. Our results for pond-dwelling cyclic parthenogens further support the hypothesis that the Eastern Palearctic is a diversity hotspot for freshwater invertebrates.

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“…Today's Artic marine biodiversity is highly impacted by newly formed current systems that bring warmer waters and their boreal inhabitants from the Atlantic and Pacific Oceans through the Fram and Bering Straits, respectively (Piepenburg et al 2011). In the past, the resident diversity was primarily shaped by recurrent invasions, habitat fragmentation, and processes associated with glacial and interglacial periods, like bathymetric changes (e.g., Hewitt 2000Hewitt , 2004Ronowicz et al 2015;Weydmann et al 2017).…”

Section: Biodiversity Of the Arctic Oceanmentioning

confidence: 99%

Arctic Ocean Biodiversity and DNA Barcoding – A Climate Change Perspective

Walczyńska

Mańko

Weydmann

2018

YOUMARES 8 – Oceans Across Boundaries: Learning From Each Other

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Global changes are initiating a cascade of complex processes, which result, among other things, in global climate warming. Effects of global climate change are most pronounced in the Arctic, where the associate processes are progressing at a more rapid pace than in the rest of the world. Intensified transport of warmer water masses into the Arctic is causing shifts in species distributions and efforts to understand and track these change are currently intensified. However, Arctic marine fauna is the result of different recurring colonization events by Atlantic and Pacific Ocean populations, producing a very confounding evolutionary signal and making species identification by traditional morphological taxonomic analysis extremely challenging. In addition, many marine species are too small or too similar to identify reliably, even with profound taxonomic expertise. Nevertheless, the majority of current research focusing on artic marine communities still relies on the analysis of samples with traditional taxonomic methods, which tends to lack the necessary taxonomic, spatial and temporal resolution needed to understand the drastic ecosystem shifts underway. However, molecular methods are providing new opportunities to the field and their continuous development can accelerate and facilitate ecological research in the Arctic. Here, we discuss molecular methods currently available to study marine Arctic biodiversity, encouraging the DNA barcoding for improved descriptions, inventory and providing examples of DNA barcoding utilization in Arctic diversity research and investigations into ecosystem drivers.

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Postglacial expansion of the Arctic keystone copepod Calanus glacialis

Cited by 14 publications

References 55 publications

Genetic population structure of the pelagic mollusk Limacina helicina in the Kara Sea

Genetic population structure of the pelagic mollusk Limacina helicina in the Kara Sea

Contrasting endemism in pond-dwelling cyclic parthenogens: the Daphnia curvirostris species group (Crustacea: Cladocera)

Arctic Ocean Biodiversity and DNA Barcoding – A Climate Change Perspective

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