No divergent evolution, despite restricted connectivity, between Atlantic and Indian Ocean goby populations

Drost, Eduard; Golla, Tirupathi Rao; Heyden, Sophie von der; Teske, Peter R.

doi:10.1007/s12526-015-0389-6

Cited by 10 publications

(15 citation statements)

References 35 publications

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“…The fact that South Africa's coastal biogeography is mirrored by intraspecific spatial genetic structure suggests that species present in more than one province should comprise multiple evolutionary lineages that represent cryptic species [1]. The goby Psammogobius knysnaensis is one of a number of coastal southern African species that occur in multiple marine bioregions, but which displays no regional divergence on the basis of selectively neutral markers [24] of the type that are primarily used in phylogeographical research [19,20]. Here, we reject the previous finding of genetic homogeneity and show that this species is in fact represented by multiple regional groups delimited by temperature-defined bioregions.…”

Section: Discussionmentioning

confidence: 99%

“…For comparison, a corresponding MCC tree was created for previously published mtDNA COI data [24] using the same settings.…”

Section: (D) Functional Annotationmentioning

confidence: 99%

“…Some branches are nested within clades that mostly have location states from other regions, which may reflect migration between adja marine bioregions. For comparison, a maximum-c credibility tree reconstructed from mtDNA sequences [24] shows no clear regional structure ( 3b).…”

Section: Figurementioning

confidence: 99%

“…We tested this hypothesis by generating genome-wide data from one of these phylogenetically homogeneous species [24], the Knysna sandgoby, Psammogobius knysnaensis ( Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

“…This would present compelling evidence that in coastal regions that lack physical dispersal barriers, thermal selection plays a defining role in the early stages of parapatric ecological speciation. Psammogobius knysnaensis (the study species, marked with an asterisk) [24] and 2. Scutellastra longicosta [16].…”

Section: Introductionmentioning

confidence: 99%

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Thermal selection drives biodiversity origination across the Atlantic/Indian Ocean boundary

Teske

Sandoval‐Castillo

Golla

et al. 2018

Preprint

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Intraspecific genetic structure in widely distributed marine species often mirrors the boundaries between temperature-defined bioregions. This suggests that the same thermal gradients that maintain distinct species assemblages also drive the evolution of new biodiversity. Ecological speciation scenarios are often invoked to explain such patterns, but the fact that adaptation is usually only identified when phylogenetic splits are already evident makes it impossible to rule out the alternative scenario of allopatric speciation with subsequent adaptation. We integrated large-scale genomic and environmental datasets along one of the world's best defined marine thermal gradients (the South African coastline) to test the hypothesis that incipient speciation in the sea is due to divergence linked to the thermal environment. We identified temperature-associated gene regions in a coastal fish species that is spatially homogeneous throughout several temperature-defined biogeographical regions on the basis of selectively neutral markers. Based on these gene regions, the species is divided into geographically distinct regional populations. Importantly, the ranges of these populations are delimited by the same ecological boundaries that define distinct infraspecific genetic lineages in co-distributed marine the species, and biogeographical disjunctions in species assemblages. Our results indicate that ecologically-mediated selection represents an early stage of marine speciation in coastal regions that lack physical dispersal barriers.

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Section: Discussionmentioning

confidence: 99%

“…For comparison, a corresponding MCC tree was created for previously published mtDNA COI data [24] using the same settings.…”

Section: (D) Functional Annotationmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

“…We tested this hypothesis by generating genome-wide data from one of these phylogenetically homogeneous species [24], the Knysna sandgoby, Psammogobius knysnaensis ( Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermal selection drives biodiversity origination across the Atlantic/Indian Ocean boundary

Teske

Sandoval‐Castillo

Golla

et al. 2018

Preprint

Self Cite

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Genetic structure of intertidal shimofuri goby in the Zhejiang Coastal Sea, China: implications for management

Raphalo

Lü

et al. 2018

Mar Biodiv

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Genetic diversity of marbled goby populations in the Anatolian coasts of the north-eastern Mediterranean

Seyhan-Ozturk

Engin

2021

J. Mar. Biol. Ass.

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The demographic histories, genetic relationships and population structure of sedentary fish Pomatoschistus marmoratus (Risso, 1810), which was sampled from the north-eastern basin of the Mediterranean Sea (including the Turkish coasts of the Black Sea, Aegean Sea, Levantine Sea and Sea of Marmara), were investigated by mitochondrial cytochrome c oxidase subunit I (652 bp) and cytochrome b (526 bp) regions. It was found that the population groups had high haplotype diversity while the nucleotide diversity was quite low for both gene regions. Phylogeographic analyses of the haplotypes indicated that the Levantine population (LEV) were genetically different from other populations. Also, the gene flow between LEV and the other populations was very limited. The results of the analyses of neutrality and mismatch distributions that were applied to the population groups were evaluated as a whole. It was determined that the haplogroup that represents the Black Sea and Sea of Marmara populations (BLAMAR) was stable, but the Levantine population (LEV) was under the sudden demographic expansion model following the population bottleneck. The genetic variance indices indicated sudden demographic expansion following population contraction. This was supported by star-shaped haplotype networks. The reason for this limited gene flow and differentiation between the Levantine population (LEV) and the others was linked with wind-driven offshore transport of the larvae and surface currents in these sub-basins. The timing of the differentiation, demographic histories of populations associated with geological and palaeo-climatic events and current ecological conditions were discussed.

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No divergent evolution, despite restricted connectivity, between Atlantic and Indian Ocean goby populations

Cited by 10 publications

References 35 publications

Thermal selection drives biodiversity origination across the Atlantic/Indian Ocean boundary

Thermal selection drives biodiversity origination across the Atlantic/Indian Ocean boundary

Genetic structure of intertidal shimofuri goby in the Zhejiang Coastal Sea, China: implications for management

Genetic diversity of marbled goby populations in the Anatolian coasts of the north-eastern Mediterranean

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