Mitochondrial DNA fails to reveal genetic structure in sea-lampreys along European shores

Almada, Vítor Carvalho; Pereira, Ana; Robalo, Joana Isabel; Fonseca, João Paulo; Levy, André; Maia, Carla; Valente, Alexandre

doi:10.1016/j.ympev.2007.05.024

Cited by 37 publications

(54 citation statements)

References 16 publications

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“…This haplotype (PMVG8) was already found by Almada et al (2008). It was present in 213 individuals out of the 273 analysed in that study, and it was present in samples from the Rhine in Germany to the Guadiana in south Portugal.…”

Section: Resultssupporting

confidence: 55%

“…Total genomic DNA was extracted with a REDExtract-N-Amp kit (Sigma-Aldrich, http://www.sigma.com). PCR primers used were LampFor 5 0 -ACA CCC AGA AAC AGC AAC AAA-3 0 and LampRev 5 0 -GCT GGT TTA CAA GAC CAG TGC-3 0 (Almada et al 2008). PCR conditions followed Almada et al (2008).…”

Section: Methodsmentioning

confidence: 99%

“…PCR primers used were LampFor 5 0 -ACA CCC AGA AAC AGC AAC AAA-3 0 and LampRev 5 0 -GCT GGT TTA CAA GAC CAG TGC-3 0 (Almada et al 2008). PCR conditions followed Almada et al (2008). Sequencing reactions were performed in StabVida (Lisbon) on a 3700 ABI DNA sequencer (Applied Biosystems) using the Big Dye terminator DNA sequencing kit (http://www.stabvida.com).…”

Section: Methodsmentioning

confidence: 99%

“…Sequences were aligned with Clustal X (Thompson et al 1997) and were compared with all available sequences (Waldman et al 2006;Almada et al 2008). The mtDNA fragment used includes the region sequenced by Almada et al (2008) for the European sea lampreys and Waldman et al (2006) for the North American ones.…”

Section: Methodsmentioning

confidence: 99%

“…The mtDNA fragment used includes the region sequenced by Almada et al (2008) for the European sea lampreys and Waldman et al (2006) for the North American ones. Distances among haplotypes were computed using PAUP 4.0b10 (Swofford 2003).…”

Section: Methodsmentioning

confidence: 99%

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Icelandic lampreys (Petromyzon marinus): where do they come from?

et al. 2011

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Section: Resultssupporting

confidence: 55%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Icelandic lampreys (Petromyzon marinus): where do they come from?

et al. 2011

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Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning‐migration obstructions

Nunn

Taylor

Cowx

et al. 2017

Aquatic Conservation

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1. Recent advances in the understanding of lamprey migrations have led to concerns over the impacts of obstructions on the demography of many species. This study investigated sea lamprey (Petromyzon marinus) larvae (ammocoetes) in two adjacent but contrasting rivers, both designated Special Areas of Conservation under the EC Habitats Directive (92/43/EEC), one (the River Wye) with a small number of potential migration obstructions in its upper reaches and one (the River Usk) with obstacles along its course. The geographical distributions, densities and age structures of the ammocoete populations were examined in relation to the locations of potential obstructions to the spawning migrations of anadromous adults. 2. A minimum of three age classes was recorded as far as 200 km upstream of the mouth of the River Wye (93% of the length of the mainstem), demonstrating that adults regularly migrate to the upper reaches of the catchment (downstream of a natural waterfall). By contrast, sea lamprey ammocoetes appeared to be absent (in suitable habitat) from 20 km (17%) of the River Usk, and there was a reduction in density, prevalence and the number of age classes upstream of two putative spawning-migration obstructions.3. This study highlights some of the potential impacts of habitat fragmentation by obstructions on the spawning migrations of anadromous species, as inferred from ammocoete demography.When used in combination to compare contiguous reaches, ammocoete densities, prevalence and age structure may be a useful indicator of which structures are likely to be important migration obstructions, and where further studies or mitigation efforts should be focused. It is likely that passage past some obstructions is enhanced if high river levels occur during the spawning migration, but there is a need to facilitate passage during all conditions, to improve access to under-exploited spawning and nursery areas.

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Northern refugia and recent expansion in the North Sea: the case of the wrasse Symphodus melops (Linnaeus, 1758)

Robalo¹,

Castilho²,

Francisco³

et al. 2011

Ecology and Evolution

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Pleistocene climate changes have imposed extreme conditions to intertidal rocky marine communities, forcing many species to significant range shifts in their geographical distributions. Phylogeographic analyses based on both mitochondrial and nuclear genetic markers provide a useful approach to unravel phylogeographic patterns and processes of species after this time period, to gain general knowledge of how climatic changes affect shifts in species distributions. We analyzed these patterns on the corkwing wrasse (Symphodus melops, Labridae), a rocky shore species inhabiting North Sea waters and temperate northeastern Atlantic Ocean from Norway to Morocco including the Azores, using a fragment of the mitochondrial control region and the first intron of the nuclear S7 ribosomal protein gene. We found that S. melops shows a clear differentiation between the Atlantic and the Scandinavian populations and a sharp contrast in the genetic diversity, high in the south and low in the north. Within each of these main geographic areas there is little or no genetic differentiation. The species may have persisted throughout the last glacial maximum in the southern areas as paleotemperatures were not lower than they are today in North Scandinavia. The North Sea recolonization most likely took place during the current interglacial and is dominated by a haplotype absent from the south of the study area, but present in Plymouth and Belfast. The possibility of a glacial refugium in or near the English Channel is discussed.

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Mitochondrial DNA fails to reveal genetic structure in sea-lampreys along European shores

Cited by 37 publications

References 16 publications

Icelandic lampreys (Petromyzon marinus): where do they come from?

Icelandic lampreys (Petromyzon marinus): where do they come from?

Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning‐migration obstructions

Northern refugia and recent expansion in the North Sea: the case of the wrasse Symphodus melops (Linnaeus, 1758)

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