Marine Invasion Genomics: Revealing Ecological and Evolutionary Consequences of Biological Invasions

Bourne, Steve; Hudson, Jamie; Holman, Luke E.; Rius, Marc

doi:10.1007/13836_2018_21

Cited by 20 publications

(23 citation statements)

References 291 publications

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“…Despite a great deal of recent research on invasion genetics Bourne, Hudson, Holman, & Rius, 2018;Rius et al, 2015), there remains a dearth of studies investigating how genetic patterns in the native range influence the introduced range.…”

Section: Introductionmentioning

confidence: 99%

Secondary contacts and genetic admixture shape colonization by an amphiatlantic epibenthic invertebrate

Hudson

Johannesson

McQuaid

et al. 2019

Evolutionary Applications

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Research on the genetics of invasive species often focuses on patterns of genetic diversity and population structure within the introduced range. However, a growing body of literature is demonstrating the need to study how native genotypes affect both ecological and evolutionary mechanisms within the introduced range. Here, we used genotyping‐by‐sequencing to study both native and introduced ranges of the amphiatlantic marine invertebrate Ciona intestinalis. A previous study using microsatellites analysed samples collected along the Swedish west coast and showed the presence of genetically distinct lineages in deep and shallow waters. Using 1,653 single nucleotide polymorphisms (SNPs) from newly collected samples (285 individuals), we first confirmed the presence of this depth‐defined genomic divergence along the Swedish coast. We then used approximate Bayesian computation to infer the historical relationship among sites from the North Sea, the English Channel and the northwest Atlantic and found evidence of ancestral divergence between individuals from deep waters off Sweden and individuals from the English Channel. This divergence was followed by a secondary contact that led to a genetic admixture between the ancestral populations (i.e., deep Sweden and English Channel), which originated the genotypes found in shallow Sweden. We then revealed that the colonization of C. intestinalis in the northwest Atlantic was as a result of an admixture between shallow Sweden and the English Channel genotypes across the introduced range. Our results showed the presence of both past and recent genetic admixture events that together may have promoted the successful colonizations of C. intestinalis. Our study suggests that secondary contacts potentially reshape the evolutionary trajectories of invasive species through the promotion of intraspecific hybridization and by altering both colonization patterns and their ecological effects in the introduced range.

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Section: Introductionmentioning

confidence: 99%

Secondary contacts and genetic admixture shape colonization by an amphiatlantic epibenthic invertebrate

Hudson

Johannesson

McQuaid

et al. 2019

Evolutionary Applications

Self Cite

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“…In some cases, hybridization may be favoured when rapid genetic introgression facilitates novel evolutionary pathways [75,76]. As Lamichhaney and colleagues have recently observed, a hybrid pairing can be the starting point for a new species in situ [77,78].…”

Section: Discussionmentioning

confidence: 99%

Introduced parasite changes host phenotype, mating signal and hybridization risk: Philornis downsi effects on Darwin's finch song

et al. 2019

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Introduced parasites that alter their host's mating signal can change the evolutionary trajectory of a species through sexual selection. Darwin's Camarhynchus finches are threatened by the introduced fly Philornis downsi that is thought to have accidentally arrived on the Galapagos Islands during the 1960s. The P. downsi larvae feed on the blood and tissue of developing finches, causing on average approximately 55% in-nest mortality and enlarged naris size in survivors. Here we test if enlarged naris size is associated with song characteristics and vocal deviation in the small tree finch ( Camarhynchus parvulus ), the critically endangered medium tree finch ( C. pauper ) and the recently observed hybrid tree finch group ( Camarhynchus hybrids). Male C. parvulus and C. pauper with enlarged naris size produced song with lower maximum frequency and greater vocal deviation, but there was no significant association in hybrids. Less vocal deviation predicted faster pairing success in both parental species. Finally, C. pauper males with normal naris size produced species-specific song, but male C. pauper with enlarged naris size had song that was indistinguishable from other tree finches. When parasites disrupt host mating signal, they may also facilitate hybridization. Here we show how parasite-induced naris enlargement affects vocal quality, resulting in blurred species mating signals.

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“…In addition, studies of genomics patterns of biological invasions increasingly report hybridization between previously isolated genotypes due to human activities (Chunco, 2014;Viard et al, 2020). Although the recent mixing of divergent genotypes may help non-indigenous species cope better with or adapt to novel conditions found in the introduced range (Bourne et al, 2018;Blakeslee et al, 2020), it considerably obscures the interpretation of phylogeographic results.…”

Section: Invasion Science and Phylogeographymentioning

confidence: 99%

Phylogeography and the Description of Geographic Patterns in Invasion Genomics

Rius

Turon

2020

Front. Ecol. Evol.

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Marine Invasion Genomics: Revealing Ecological and Evolutionary Consequences of Biological Invasions

Cited by 20 publications

References 291 publications

Secondary contacts and genetic admixture shape colonization by an amphiatlantic epibenthic invertebrate

Secondary contacts and genetic admixture shape colonization by an amphiatlantic epibenthic invertebrate

Introduced parasite changes host phenotype, mating signal and hybridization risk: Philornis downsi effects on Darwin's finch song

Phylogeography and the Description of Geographic Patterns in Invasion Genomics

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