Rapid Evolution in the Nebria Gregaria Group (Coleoptera: Carabidae) and the Paleogeography of the Queen Charlotte Islands

Clarke, Tom; Levin, D. B.; Kavanaugh, David H.; Reimchen, T. E.

doi:10.1554/0014-3820(2001)055[1408:reitng]2.0.co;2

Cited by 12 publications

(17 citation statements)

References 47 publications

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“…Small refugial populations commonly show morphological differentiation due to random drift or directional selection while in isolation (e.g. Clarke et al. , 2001; Fedorov & Stenseth, 2001,2002).…”

Section: Discussionmentioning

confidence: 99%

Evidence for cryptic glacial refugia from North American mountain sheep mitochondrial DNA

Loehr

Worley

Grapputo

et al. 2006

Journal of Evolutionary Biology

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The separation of populations by ice sheets into large refugia can account for much of the genetic diversity found in present day populations. The evolutionary implications of small glacial refugia have not been as thoroughly explored. To examine refugial origins of North American mountain sheep Ovis spp., we analyzed a 604 bp portion of the mitochondrial DNA (mtDNA) control region from 223 O. dalli and O. canadensis. Major refugia were identified in eastern Beringia and southern North America, and we found evidence for two smaller refugia situated between the Laurentide and Cordilleran glaciers. Our results are the first to demonstrate support for survival of any organism in the latter two refugia. These refugia also appear to have conserved a genetic signal that confirms past hybridization of O. dalli and O. canadensis

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Section: Discussionmentioning

confidence: 99%

Evidence for cryptic glacial refugia from North American mountain sheep mitochondrial DNA

Loehr

Worley

Grapputo

et al. 2006

Journal of Evolutionary Biology

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“…The standard 2% is often considered a conservative estimate (see Arbogast & Slowinski 1998 and references therein), and published estimates for beetles range from ≈ 5–6% divergence per Myr for recent species (Juan et al . 1996; Clarke et al . 2001), through those around the standard 2% (Caccone & Sbordoni 2001; Farrell 2001; Barraclough & Vogler 2002), to about one‐third of this value (Gómez‐Zurita et al .…”

Section: Discussionmentioning

confidence: 99%

Speciation of Iberian diving beetles in Pleistocene refugia (Coleoptera, Dytiscidae)

2003

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The Mediterranean basin is an area of high diversity and endemicity, but the age and origin of its fauna are still largely unknown. Here we use species-level phylogenies based on approximately 1300 base pairs of the genes 16S rRNA and cytochrome oxidase I to establish the relationships of 27 of the 34 endemic Iberian species of diving beetles in the family Dytiscidae, and to investigate their level of divergence. Using a molecular clock approach, 18-19 of these species were estimated to be of Pleistocene origin, with four to six of them from the Late Pleistocene ( approximately 100 000 years). A second, lower speciation frequency peak was assigned to Late Miocene or Early Pliocene. Analysis of the distributional ranges showed that endemic species placed in the tip nodes of the trees are significantly more likely to be allopatric with their sisters than endemic species at lower node levels. Allopatric sister species are also significantly younger than sympatric clades, in agreement with an allopatric mode of speciation and limited subsequent range movement. These results strongly suggest that for some taxa Iberian populations were isolated during the Pleistocene long enough to speciate, and apparently did not expand their ranges to recolonize areas north of the Pyrenees. This is in contradiction to observations from fossil beetles in areas further north, which document large range movements associated with the Pleistocene glacial cycles hypothesized to suppress population isolation and allopatric speciation.

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“…Indeed, analysis of fossil pollen data suggest that plant communities dramatically changed north of Vancouver Island at the LGM (Heusser 2000). Likewise, molecular phylogeographic studies of several northeastern Pacific terrestrial and anadromous taxa have shown both contrasting evidence of northern refugia (Byun et al 1997;Soltis et al 1997;Conroy and Cook 2000;Clarke et al 2001;Cook et al 2001;Ritland et al 2001;Smith et al 2001) and southward range contraction/expansion (Lance and Cook 1998;Stone et al 2002). While range shifts and extinction are likely related to abiotic factors (Jansson 2003), it is most plausible that the interplay between ecological, demographic, and abiotic factors plays a deterministic role in northern range limits.…”

Section: Paleo-sea Surface Temperatures and Coastal Glaciationsmentioning

confidence: 99%

Contrasting Quaternary Histories in an Ecologically Divergent Sister Pair of Low-Dispersing Intertidal Fish (Xiphister) Revealed by Multilocus Dna Analysis

Hickerson

Cunningham

2005

Evolution

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Abstract. Recurrent glacial advances have shaped community histories across the planet. While biogeographic responses to glaciations likely varied with latitude, the consequences for temperate marine communities histories are less clear. By coalescent analyses of multiloci DNA sequence data (mitochondrial DNA control region, ␣-enolase intron, and ␣-tropomyosin intron) collected from a low-dispersing sister pair of rocky intertidal fishes commonly found from southeastern Alaska to California (Xiphister atropurpureus and X. mucosus), we uncover two very different responses to historical glaciations. A variety of methods that include a simulation analysis, coestimates of migration and divergence times, and estimates of minimum ages of populations sampled up and down the North American Pacific coast all strongly revealed a history of range persistence in X. atropurpureus and extreme range contraction and expansion from a southern refugium in X. mucosus. Furthermore, these conclusions are not sensitive to the independent estimates of the DNA substitution rates we obtain. While gene flow and dispersal are low in both species, the widely different histories are rather likely to have arisen from ecological differences such as diet breadth, generation time, and habitat specificity. The periodic glacial epochs of the Quaternary were prolonged and occupied nearly 80% of the last 2 million years (Lambeck et al. 2002). The composition of Northern Hemisphere temperate communities during warmer interglacial periods such as the current Holocene era is widely thought to be the result of range expansion and colonization from southern glacial refugia, leading to directional selection favoring generalists with higher dispersal ability and lower overall taxonomic diversity than tropical regions (Valentine and Jablonski 1993; Hewitt 1999;Dynesius and Jansson 2000). While these glaciations have often resulted in genetic signatures of low population divergence and gradients in genetic diversity in temperate North American and European taxa (Avise 2000; Hewitt 2000;Lessa et al. 2003), some genetic studies are increasingly suggesting that many temperate communities consist of taxa that retained the geographical extent of their ranges in cryptic multiple refugia (Stewart and Lister 2001;Jacobs et al. 2004).The community composition of temperate intertidal areas such as the northeastern Pacific is likely to be the result of both historical processes such as these cyclical glaciations as well as contemporary oceanographic processes and changes (Horn and Allen 1978;Roy et al. 1995;Lindberg and Lipps 1996; Roy et al. 2001;Hohenlohe 2004). The craggy and complex coastline of the northeastern Pacific intertidal contains a highly diversified biota, yet it has experienced coastal sea ice, lower sea surface temperatures (SST), shifts in major current patterns (Sabin and Pisias 1996;Lyle et al. 2000;Herbert et al. 2001;Pisias et al. 2001), and sea levels falling as much as 150 m (Pielou 1991;Williams et al. 1998;Rahmstorf 2002 this community during...

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Rapid Evolution in the Nebria Gregaria Group (Coleoptera: Carabidae) and the Paleogeography of the Queen Charlotte Islands

Cited by 12 publications

References 47 publications

Evidence for cryptic glacial refugia from North American mountain sheep mitochondrial DNA

Evidence for cryptic glacial refugia from North American mountain sheep mitochondrial DNA

Speciation of Iberian diving beetles in Pleistocene refugia (Coleoptera, Dytiscidae)

Contrasting Quaternary Histories in an Ecologically Divergent Sister Pair of Low-Dispersing Intertidal Fish (Xiphister) Revealed by Multilocus Dna Analysis

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