Discordance between nuclear and mitochondrial DNA analyses of population structure in closely related triplefin fishes (Forsterygion lapillum and F. capito, F. Tripterygiidae) supports speciation with gene flow

Rabone, Muriel; Lavery, Shane; Little, A.‐M.; Clements, Kendall D.

doi:10.1007/s00227-015-2697-6

Cited by 8 publications

(4 citation statements)

References 74 publications

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“…Our case-study in the Common triplefin shows that these adaptive mutations are maintained within the whole population at a local scale. Evidence of population structuring at regional scales has been found for Common triplefins (Rabone et al, 2015), and the degree of maintenance of adaptive mutations to ocean acidification at this scale deserves further studies in this species. However, the model presented here is applicable to all fish species with pelagic larvae and genetic flow among different environments.…”

Section: Discussionmentioning

confidence: 85%

Natural CO₂ seeps reveal adaptive potential to ocean acidification in fish

Petit-Marty

Nagelkerken

Connell

et al. 2021

Evolutionary Applications

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Human-driven global change is challenging the scientific community to understand how marine species might adapt to predicted environmental conditions in the near future (e.g., hypoxia, ocean warming, and ocean acidification). The effects of the uptake of anthropogenic atmospheric CO 2 by oceans propagate across the biological hierarchy, from changes in the building blocks of life at nanoscales (Leung et al., 2020) to organismal physiology and behavior (Strader et al., 2020) through to ecosystem processes and their properties

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Section: Discussionmentioning

confidence: 85%

Natural CO₂ seeps reveal adaptive potential to ocean acidification in fish

Petit-Marty

Nagelkerken

Connell

et al. 2021

Evolutionary Applications

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“…Many studies have used highly polymorphic microsatellite DNA markers to identify both individuals and populations [ 19 , 20 , 22 ]. Microsatellites are generally more variable than mtDNA and allozymes, therefore more useful for population genetic studies that include fingerprinting and genetic mapping [ 20 , 23 , 24 ]. In marine organisms, they can be used to analyze genetic diversity between wild and farmed organisms, verify parentage, and quantify population genetic variation in related and hybrid species [ 20 , 25 – 27 ].…”

Section: Introductionmentioning

confidence: 99%

New insight into hybridization and unidirectional introgression between Ammodytes japonicus and Ammodytes heian (Trachiniformes, Ammodytidae)

et al. 2017

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Based on northern (NOL) and southern (SOL) mitochondrial lineages, recently, it proposed the new species Ammodytes heian and revived the species name Ammodytes japonicus to describe sand lances from the northwestern Pacific Ocean. This study used molecular methods to investigate genetic relationships between the two sand lance species in Korea and Japan. In total, 154 specimens were collected from four locations in Korea (Baengnyeongdo in the Yellow Sea, Tongyeong in the Korean Strait, and Jumunjin and Gijang in the East Sea), and 50 specimens were collected from a single location in Japan (Wakkanai in the Okhotsk Sea). Mitochondrial DNA analysis demonstrated that the individuals from Baengnyeongdo and Tongyeong all belonged to the SOL, whereas those from Gijang, Jumunjin, and Wakkanai included individuals from both the NOL and SOL (over 75% NOL). Population structure analyses were performed on the same individuals using seven microsatellite DNA markers. The population structure analysis based on 201 specimens identified two clusters (named as northern group and southern group), with the admixture proportion (q) of < 0.1 for the northern group in the Backyeongdo and Tongyeong sand lances and < 0.1 for the southern group in the Wakkanai sand lances. The high heterogeneity indicated that the former was probably A. japonicus and the latter probably A. heian. However, the admixture proportion in the Jumunjin and Gijang sand lances was 0.71–0.75 for the southern group, indicating that hybridization and unidirectional introgression from SOL to NOL occurs in southwestern margin of the East Sea. Our findings illustrate the speciation process based on different patterns of gene flow between Korean and Japanese sand lance, which is strongly influenced by both the paleo-climatic change and the contemporary local oceanic current pattern.

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“…(in prep) used ɸ ST values for the measure of differentiation and natural log kilometres for the measure of distance. This method does appear in the literature (Pálsson et al 2014), but it appears to be less common than using ɸ ST and untransformed kilometre distances (Marko 2004, Buchanan and Zuccarello 2012, Keeney et al2013, Crandall et al 2014, Rabone et al 2015. To complicate parameter selection, many studies compare Slatkin's linearized genetic differentiation [ф ST / (1-ф ST )] with both transformed kilometres (Reisser et al 2014, Hernández et al 2015 and untransformed kilometres (Waters et al 2005, Keeney et al 2009.…”

Section: Statistical Analysesmentioning

confidence: 99%

“…However, variable sampling scales and locations make accurate detection of the boundary difficult. The Cook Strait divide may be an artefact from sampling an IBD pattern at a large spatial scale (Rabone et al 2015), it may reflect the historic presence of a land bridge between the two islands during the last glacial maximum (LGM) (Trewick and Bland 2012), or it may be the effect of upwelling processes acting on planktonically dispersing species (Ayers and Waters 2005).…”

Section: Introductionmentioning

confidence: 99%

Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa)

Dohner¹

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<p>The exchange of individuals between populations influences demographic connectivity on the ecological scale and genetic connectivity on the evolutionary scale. In some circumstances there are similarities between demographic and genetic connectivity, but in others there are differences. Whenever genetic differentiation is found between populations demographic uncoupling can also be inferred, but when gene flow is found there is uncertainty about whether populations are demographically connected or not. Marine invertebrates typically have large population sizes and many opportunities for dispersal. However, species that have limited planktonic dispersal power are often characterized by genetically and demographically discrete populations that exhibit an isolation-by-distance (IBD) pattern of gene distribution. Alternative methods of dispersal, such as rafting or drifting, produce departures from this expected pattern for species lacking planktonic larvae. Examining genetic patterns at fine geographic scales can identify key dispersal barriers and may give clues to alternative dispersal methods influencing large scale processes. The endemic, direct-developing spotted whelk, Cominella maculosa, is found in the intertidal rocky shores throughout most of New Zealand. This distribution makes it ideal for studying a species expected to exhibit low realized dispersal by crawling and is unlikely to experience dispersal by rafting. The first aim of this study was to investigate genetic patterns between two genetically distinct populations along the Wairarapa Coast of the North Island to determine if a barrier to dispersal was present or if the expected IBD pattern was observed. The second aim was to determine the likelihood of individual hatchlings undertaking long distance dispersal by drifting in the water column. The mitochondrial DNA COI gene was sequenced using 324 whelk samples collected at seven sites along 125 km of Wairarapa shoreline. No significant level of genetic isolation-by-distance or discontinuity in haplotype distribution was observed. Instead, two sites in the middle of the region form a contact area where the dominant northern and southern haplotypes coexist. To investigate dispersal by drifting in the water, three experimental trials were conducted with hatchlings obtained from field-collected egg capsules. When subjected to wave forces, or deposited directly in flow, hatchlings remained suspended and were carried a short distance. However, hatchlings circulated in currents and left for a longer period (12 hours) were rarely found drifting after this period. These trials indicate that wave dislodgement and local flow regime may result in small-scale displacement of hatchlings, but long-distance dispersal by drift is unlikely. Plankton sampling was also conducted at two sites with four nearshore traps. The rare capture of a related Cominella virgata hatchling supports the finding that hatchlings can be dislodged, but prolonged drift cannot be inferred. The findings from this study support the assumption that crawling is the dominant dispersal mechanism for C. maculosa. Crawling between sites best explains the blending of haplotypes in the middle of the Wairarapa and the genetic differentiation between populations. Crawling-mediated connectivity is unlikely to occur at the ecological scale; therefore populations are expected to be demographically isolated. The results of this research support the general findings in the literature that populations of direct developing species are often demographically isolated and have low levels of genetic connectivity.</p>

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Discordance between nuclear and mitochondrial DNA analyses of population structure in closely related triplefin fishes (Forsterygion lapillum and F. capito, F. Tripterygiidae) supports speciation with gene flow

Cited by 8 publications

References 74 publications

Natural CO₂ seeps reveal adaptive potential to ocean acidification in fish

Natural CO₂ seeps reveal adaptive potential to ocean acidification in fish

New insight into hybridization and unidirectional introgression between Ammodytes japonicus and Ammodytes heian (Trachiniformes, Ammodytidae)

Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa)

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Discordance between nuclear and mitochondrial DNA analyses of population structure in closely related triplefin fishes (Forsterygion lapillum and F. capito, F. Tripterygiidae) supports speciation with gene flow

Cited by 8 publications

References 74 publications

Natural CO2 seeps reveal adaptive potential to ocean acidification in fish

Natural CO2 seeps reveal adaptive potential to ocean acidification in fish

New insight into hybridization and unidirectional introgression between Ammodytes japonicus and Ammodytes heian (Trachiniformes, Ammodytidae)

Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa)

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Natural CO₂ seeps reveal adaptive potential to ocean acidification in fish

Natural CO₂ seeps reveal adaptive potential to ocean acidification in fish