Genetic analysis of the species of<i>sigara</i>s. str. (Heteroptera, Corixidae) in the Italian Peninsula

Giovanni, Maria Vittoria Di; Vlach, Massimo Rizzotti; Giangiuliani, Giuliana; Goretti, Enzo; Torricelli, Renzo

doi:10.1080/11250009809386780

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…Lineage C extends narrowly to the south at both the eastern and western sides of this mountain area, and at least on the eastern side, it establishes a secondary contact zone with lineage S, as revealed by the co-occurrence of haplotypes from both lineages in our single sample 24. Clusters of species' range edges, phylogeographic breaks, and contact zones along the northern Apennines have similarly been found in several temperate species, including amphibians [87] – [90] .…”

Section: Discussionmentioning

confidence: 81%

One Species, Three Pleistocene Evolutionary Histories: Phylogeography of the Italian Crested Newt, Triturus carnifex

Canestrelli

Salvi²,

Maura

et al. 2012

PLoS ONE

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Phylogeographic patterns of temperate species from the Mediterranean peninsulas have been investigated intensively. Nevertheless, as more phylogeographies become available, either unique patterns or new lines of concordance continue to emerge, providing new insights on the evolution of regional biotas. Here, we investigated the phylogeography and evolutionary history of the Italian crested newt, Triturus carnifex, through phylogenetic, molecular dating and population structure analyses of two mitochondrial gene fragments (ND2 and ND4; overall 1273 bp). We found three main mtDNA lineages having parapatric distribution and estimated divergence times between Late Pliocene and Early Pleistocene. One lineage (S) was widespread south of the northern Apennine chain and was further geographically structured into five sublineages, likely of Middle Pleistocene origin. The second lineage (C) was widespread throughout the Padano–Venetian plain and did not show a clear phylogeographic structure. The third lineage (N) was observed in only two populations located on western Croatia/Slovenia. Results of analysis of molecular variance suggested that partitioning populations according to the geographic distribution of these lineages and sublineages explains 76% of the observed genetic variation. The phylogeographic structure observed within T. carnifex and divergence time estimates among its lineages, suggest that responses to Pleistocene environmental changes in this single species have been as diverse as those found previously among several codistributed temperate species combined. Consistent with the landscape heterogeneity, physiographic features, and palaeogeographical evolution of its distribution range, these responses encompass multiple refugia along the Apennine chain, lowland refugia in large peri-coastal plains, and a ‘cryptic’ northern refugium.

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Section: Discussionmentioning

confidence: 81%

One Species, Three Pleistocene Evolutionary Histories: Phylogeography of the Italian Crested Newt, Triturus carnifex

Canestrelli

Salvi²,

Maura

et al. 2012

PLoS ONE

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“…Although not unusual, it may be difficult to reconcile the discordance between nuclear and mitochondrial data to infer the history of populations, given the diversity of microevolutionary processes that are potentially involved36. However, while the northern Apennine is a well known suture zone between both intra- and interspecific lineages2737383940, a contact zone in the area close to our sites 17–19 would not have any analogues in the phylogeographic literature of co-distributed temperate species. In addition, no environmental features (present or past) were present that could explain the observed pattern.…”

Section: Discussionmentioning

confidence: 91%

What triggers the rising of an intraspecific biodiversity hotspot? Hints from the agile frog

Canestrelli

Bisconti

Sacco

et al. 2014

Sci Rep

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Hotspots of genetic diversity are regions of utmost importance for species survival and conservation, and their intimate link with the geographic location of glacial refugia has been well established. Nonetheless, the microevolutionary processes underlying the generation of hotspots in such regions have only recently become a fervent field of research. We investigated the phylogeographic and population genetic structure of the agile frog, Rana dalmatina, within its putative refugium in peninsular Italy. We found this region to harbour far more diversity, phylogeographic structure, and lineages of ancient origin than that by the rest of the species' range in Europe. This pattern appeared to be well explained by climate-driven microevolutionary processes that occurred during both glacial and interglacial epochs. Therefore, the inferred evolutionary history of R. dalmatina in Italy supports a view of glacial refugia as ‘factories' rather than as repositories of genetic diversity, with significant implications for conservation strategies for hotspots.

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“…Di Giovanni et al 1998;Stefani et al 2004 and references therein). Since the Italian treefrog is a relatively thermophylic species, with more than 90% of its populations located under 500 m a.s.l.…”

Section: Discussionmentioning

confidence: 98%

Genetic differentiation and history of populations of the Italian treefrog Hyla intermedia: lack of concordance between mitochondrial and nuclear markers

2006

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The genetic differentiation among 33 populations of the Italian treefrog, Hyla intermedia (Anura: Hylidae), was investigated using both biparentally (23 allozyme loci) and maternally (partial mitochondrial cytochrome b gene) inherited markers. Two main population groups were evidenced by both markers, located north and south of the northern Apennines. However, the pattern of differentiation between these two groups was much less pronounced at allozymes than at mtDNA, leading to gene flow estimates that were 25 times lower at mitochondrial than at nuclear level. Also, the mtDNA divergence between the two groups was particularly marked for two cospecific lineages of anuran amphibians (the P-distance being on average 9.04%), while their average genetic distance at allozymes was comparatively low (D (NEI) = 0.07). This contrasting pattern of nuclear versus mitochondrial genetic variation is discussed in the context of: (1) marker specific selection, (2) secondary contact and sex-biased gene flow and (3) ancestral polymorphism and colonization from north to south. Finally we emphasize how, for population genetic studies, the use of multiple markers having distinct evolutionary properties can help unravel the existence of more complex evolutionary histories.

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Genetic analysis of the species ofsigaras. str. (Heteroptera, Corixidae) in the Italian Peninsula

Cited by 6 publications

References 10 publications

One Species, Three Pleistocene Evolutionary Histories: Phylogeography of the Italian Crested Newt, Triturus carnifex

One Species, Three Pleistocene Evolutionary Histories: Phylogeography of the Italian Crested Newt, Triturus carnifex

What triggers the rising of an intraspecific biodiversity hotspot? Hints from the agile frog

Genetic differentiation and history of populations of the Italian treefrog Hyla intermedia: lack of concordance between mitochondrial and nuclear markers

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