Extremely Low Mitochondrial DNA Control-Region Sequence Variation in the Otter Lutra Lutra Population of Denmark

Mucci, Nadia; Pertoldi, Cino; Madsen, Aksel Bo; Loeschcke, Volker; Randi, Ettore

doi:10.1111/j.1601-5223.1999.00331.x

Cited by 35 publications

(49 citation statements)

References 11 publications

(14 reference statements)

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“…In contrast to the low nucleotide diversity, the haplotype diversity found in the Neotropical otter is much higher than levels observed for other otter species, such as Enhydra lutris (h = 0.412; Larson et al, 2002) and Lutra lutra (h = 0.16 ± 0.06; Ferrando et al, 2004). In contrast to L. longicaudis, large-scale studies on European populations of Lutra lutra based on 300 bp of the 5' end mtDNA control region have so far described only six haplotypes, all of which differing from each other by a single nucleotide, demonstrating very low levels of genetic variability for that species (Effenberger and Suchentrunk, 1999;Mucci et al, 1999;Cassens et al, 2000;Pérez-Haro et al, 2005). Future assessments using standardized DNA segments and analytical methods should allow more detailed comparisons of the genetic diversity and underline the demographic history of the world's otter species.…”

Section: Discussionmentioning

confidence: 99%

“…Due to the high polymorphism on its 5' end in vertebrates (Avise, 1994;Taberlet, 1996), this segment has been widely used in populational studies of mustelids such as Gulo gulo (Wilson et al, 2000;Chappell et al, 2004), Mustela putorius (Davison et al, 2000), Martes foina (Davison et al, 2001), Enhydra lutris (Larson et al, 2002), and Lutra lutra (Mucci et al, 1999;Cassens et al, 2000;Pérez-Haro et al, 2005).…”

Section: Methodsmentioning

confidence: 99%

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Genetic diversity of the Neotropical otter (Lontra longicaudis Olfers, 1818) in Southern and Southeastern Brazil

Eizirik

2007

Braz. J. Biol.

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The Neotropical otter is one of the least known otter species, and it is considered to be threatened to various degrees throughout its geographic range. Little information exists on the ecological characteristics of this species, and no genetic study has been published about it until now, hampering the design of adequate conservation strategies for its populations. To contribute with genetic information to comprehensive conservation efforts on behalf of L. longicaudis, we characterized the molecular diversity of the 5' portion of the mtDNA control region in samples from this species collected in Southern and Southeastern Brazil. The sequence analysis revealed a high level of haplotype diversity (h = 0.819; SE = 0.0052) and nucleotide variability ranging from 0.0039 to 0.0067. One of the sampled haplotypes was the most common in both regions and, from this sequence, several other (locally occurring) haplotypes could be derived by single point mutations. No significant genetic differentiation was observed between the Southern and Southeastern regions.Keywords: Lontra longicaudis, mitochondrial DNA, control region, genetic diversity. Diversidade genética da lontra Neotropical (Lontra longicaudis Olfers, 1818) no Sul e Sudeste do Brasil ResumoA lontra Neotropical é uma das espécies de lontras menos conhecidas e apresenta diferentes graus de ameaça ao longo de sua distribuição geográfica. Pouca informação existe a respeito de aspectos ecológicos desta espécie e nenhum estudo genético foi publicado até o momento, dificultando a delimitação de estratégias adequadas de conservação para suas populações. Para contribuir com informação genética aos esforços de conservação de L. longicaudis, a diversidade molecular da porção 5' da região controladora do DNA mitocondrial foi caracterizada em amostras desta espécie coletadas nas regiões Sul e Sudeste do Brasil. A análise das seqüências revelou um alto nível de diversidade haplotípica (h = 0,819; SE = 0,0052) e variabilidade nucleotídica entre 0,0039 a 0,0067. Um dos haplótipos encontrados foi o mais comum em ambas as regiões e, desta seqüência, diversos outros haplótipos (de ocorrência restrita) podem ter se derivado através de mutações pontuais. Nenhuma diferenciação genética significante foi observada entre as regiões Sul e Sudeste.Palavras-chave: Lontra longicaudis, DNA mitocondrial, região controladora, diversidade genética.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Genetic diversity of the Neotropical otter (Lontra longicaudis Olfers, 1818) in Southern and Southeastern Brazil

Eizirik

2007

Braz. J. Biol.

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“…Two hundred and ninety-nine base pairs of sequence from the 5 0 end of the mtDNA CR from the 58 samples in this study was aligned with equivalent European otter sequences derived by Mucci et al (1999), Cassens et al (2000), Ferrando et al (2004) and Perez-Haro et al (2005) using DAMBE v4.2.13 (Xia and Xie 2001). All samples (n = 357) were then analyzed to give a description of the distributions of known European otter CR haplotypes across Europe.…”

Section: Methodsmentioning

confidence: 99%

“…We combined sequences from the UK identified in this study with sequences already obtained from the rest of Europe (Mucci et al 1999;Cassens et al 2000;Ferrando et al 2004;Perez-Haro et al 2005) and describe the implications of these results for the future conservation of this species.…”

Section: Introductionmentioning

confidence: 95%

“…Within Europe, Mucci et al (1999) identified two haplotypes, Perez-Haro et al (2005) identified three and Cassens et al (2000) and Ferrando et al (2004) identified five each. Haplotypes in these studies are often the same and the haplotype variously designated DK/Lut1/H1 has repeatedly been found to be the most common, although a second-UK/Lut3/H4 was identified as the most common in East Germany (Cassens et al 2000).…”

Section: Introductionmentioning

confidence: 98%

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Mitochondrial genetic diversity and structure of the European otter (Lutra lutra) in Britain

et al. 2008

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The European otter (Lutra lutra) is a focus for conservation efforts throughout Europe due to a population decline in recent decades and because of its importance as a biological indicator of the health of rivers and waterways. The aim of this study was to aid the conservation of this species by adding genetic information from samples originating in the United Kingdom (UK), to help build up a picture of the phylogeographic structure of the European otter throughout Europe. This was done by a comparison of 299 base pairs of the mitochondrial DNA control region. Four haplotypes were identified in the UK, one of which has not been found outside the west of the UK in the wild, and one of which was unique. Populations in the UK, and in particular the west were shown to have a higher haplotype diversity than previously found for the European otter in Europe (h = 0.7338 for the 58 UK otters sampled in this study) and an overall nucleotide diversity of p = 0.003. The western UK population was shown to have a high level of genetic distinctiveness. We discuss possible contributory population processes, the importance of the western UK population for the future conservation of the species and comment on future conservation strategies.

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Eurasian Otter Lutra lutra (Linnaeus, 1758)

Loy,

Chanin,

Kranz

et al. 2024

Handbook of the Mammals of Europe

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Extremely Low Mitochondrial DNA Control-Region Sequence Variation in the Otter Lutra Lutra Population of Denmark

Cited by 35 publications

References 11 publications

Genetic diversity of the Neotropical otter (Lontra longicaudis Olfers, 1818) in Southern and Southeastern Brazil

Genetic diversity of the Neotropical otter (Lontra longicaudis Olfers, 1818) in Southern and Southeastern Brazil

Mitochondrial genetic diversity and structure of the European otter (Lutra lutra) in Britain

Eurasian Otter Lutra lutra (Linnaeus, 1758)

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